CICECO » Jorge Ribeiro Frade

Short cv

SHORT BIBLIOGRAPHY - Jorge Frade is Full Professor of Materials Science & Engineering, since 1996. He is currently member of the Scientific Council of the University of Aveiro. - He was educated as a chemical engineer (Coimbra University,1978), obtained his PhD in glass technology (Sheffield University,1983), and “agregação”/DSc in Materials Science & Engineering (Aveiro University, 1995). - He received the prize for Scientific Excellence from the Portuguese Science Foundation (2005) - He has published more than 300 SCI papers with close to 7000 citations (h-index 45), coordinated 20 funded projects, including 9 european, and supervised 20 post-docs and 15 PhDs. - He has been a member of assessment committees of research projects, grants (posdoc & PhD), assessment panels of PhD programs (A3Es), and many examinations of PhD thesis, in Portugal and also abroad. - He has been a regular referee for a variety of journals in materials science, chemistry and related areas.

- SCIENTIFIC INTERESTS His initial research interests (early 80s) were mainly focused on glass refining, solid state reactions and crystallisation, including modelling. His interests were then changed to take a major emphasis on materials for energy conversions or storage. Still, his research activities were re-focused every decade since, to integrate a blending of different technologies in energy and environment, as summarized below:

- Materials for solid oxide fuel cells and related processes, starting in the early 90s (present project HEALING and previous STRD/429/CTM/92, NANOCERIA/POCTI/CTM/39381/2001, ECOFUELS/CONC-REEQ/710/2001,ORIEL-PTDC/CTM-CER/118933/2010, FMRX-CT97-0130, MatSILC/STREP03341, OSSEP-ESF, EULANEST/066-SOCs) ;

- Electrochemical sensors, 1990-2000 (projects STRD/429/CTM/92, PMCT/C/PMF/119/90);

- Membranes for oxygen separation, seeking oxyfuel technologies or partial oxidation of methane to syngas, starting by 2000 (projects PRAXIS/P/CTM/14170/1998, INTAS #00276; NATO SfP978002) ;

- Alternative CO2-lean technologies such as Fe-electrolysis, from 2004 (european projects ULCOS, IERO and SIDERWIN); - Heat storage, starting by 2010 (projects THERMICS and UFA+EE);

- Thermoelectric materials for heat conversion, starting by 2015;

- Processing of cellular materials for catalysis and energy, from 2013;

- Catalytic conversion of fuels, including catalytic combustion to suppress pollutants in flue gases such as NOx, CO, VOCs,…, (projects LEANCOMB)

- catalytic oxygasification of biomass, from 2016 (projects NOTARGAS and SGH/Bosch);

- Materials for integration of different renewable or waste energy sources (solar, biomass, heat) and corresponding processes (photovoltaics, electrolysis, fuel cells), started from 2017 (project SusPhotoSolutions);

- Electrowining of metals from industrial residues, from 2017, (european project SIDERWIN)

TEAM:

Aleksey Lisenkov (posdoc/project SIDERWIN);

Isabel Antunes (Researcher, project NOTARGAS)

Blanca Serrano (posdoc/project CICECO),

Sergii Sergienko (posdoc/project SUSPHOTOSOLUTIONS);

Alejandro Natoli (PhD student/FCT grant);

Luís Ruivo (PhD student/FCT grant);

Hortência Martinez Oliveira (junior research fellow/project NOTARGAS);

Daniela Lopes (PhD student/project SIDERWIN);

Eduardo Durana (junior researcher/project SIDERWIN);

Rui Pinto (junior research fellow/project HEALING);

Carlos Almeida (junior research fellow/project UFA+EE)

Selected publications

Materials for SOFC & related technologies

D. Pérez-Coll, P. Núñez, J.R. Frade, Effect Of Samarium-Content On Onset Of Minor P-Type Conductivity In Ceria-Based Electrolytes, J. Power Sources, 227 (2013) 145-152

D.Perez-Coll, A.Aguadero, P.Nunez, J.R.Frade, “Mixed transport properties of Ce1-xSmxO2-x/2 in fuel cell operating conditions, Int. J. Hydrogen Energy, 35 (2010 11448-11455

T.Carvalho, E.Antunes, J.Calado, F.M.Figueiredo, J.R. Frade, “Lanthanum oxide as a scavenging agent for zirconia electrolytes”, Solid State Ionics, 225 (2012) 484-7

Coll DP, Nunez P, Ruiz-Morales JC, Martinez JP, Frade JR, Re-examination of bulk and grain boundary conductivities of Ce_1-xGd_xO_2-d ceramics, Electrochimica Acta, 52 (2007) 2001-8

Tsipis EV, Kharton VV, Frade JR, Electrochemical behavior of mixed-conducting oxide cathodes in contact with apatite-type La10Si5AlO26.5 electrolyte, Electrochimica Acta 52 (13): 4428-4435 MAR 20 2007

D.P.Coll, D.M.Lopez, P.Nunez, S.Piñol, J.R.Frade, Grain boundary conductivity of Ce_0.8Ln_0.2O_2-d ceramics (Ln=Y,La,Gd,Sm) with and without Co-doping, Electrochimica Acta, 51 (2006) 6463-9

D.P.Coll, P.Nuñez, J.C.C.Abrantes, D.P.Fagg, V.V.Kharton, J.R.Frade, Effects of firing conditions and addition of Co on bulk and grain boundary properties of CGO, Solid State Ionics, 176 (2005) 2799-2805

Kharton VV, Tsipis EV, Yaremchenko AA, Frade JR, “Surface-limited oxygen transport and electrode properties of La2Ni0.8Cu0.2O4+delta”, Solid State Ionics, 166 (2004) 327-37.

G.C.Mather, F.M.Figueiredo, J.R.Jurado, J.R.Frade, “Synthesis and characterisation of cermet anodes for SOFCs with a proton-conducting ceramic phase”, Solid State Ionics, 162 (2003) 115-120

D.Perez-Coll, P.Nuñez, J.R.Frade, J.C.C.Abrantes, “Conductivity of CGO and CSO ceramics obtained from freeze dried precursors”, Electrochimica Acta, 48 (2003) 1551-7

D.P. Fagg, J.C.C. Abrantes, D. Perez-Coll, P. Nunez, V.V. Kharton and J.R. Frade, The effect of cobalt oxide sintering aid on electronic transport in Ce_0.80Gd_0.20O_2-_d electrolyte, Electrochimica Acta, 48 (2003) 1023-9

A.Ringuedé, D.Bronine, J.R.Frade, “Assessment of Ni/YSZ anodes prepared by combustion synthesis”, Solid State Ionics, 146 (2002) 219-24

A.Ringuedé, D.Bronine, J.R.Frade, “Alternative Ni_1-xCo_x/YSZ anodes for solid oxide fuel cells”, Electrochimica Acta, 48 (2002) 437-42

V.V.Kharton, F.M.Figueiredo, L.Navarro, E.N.Naumovich, A.V.Kovalevsky, A.A.Yarenchenko, A.P.Viskup, A.Carneiro, F.M.B.Marques, J.R.Frade, “Ceria based materials for solid oxide fuel cells”, J. Mat. Sci., 36 (2001) 1105-17

A.Ringuedé, J.A.Labrincha, J.R.Frade, “A combustion synthesis method to obtain alternative cermet materials for SOFC anodes”, Solid State Ionics, 141/2 (2001) 549-57

D.P.Fagg, V.V.Kharton, A.V.Kovslevsky, A.P.Viskup, E.N.Naumovich, J.R.Frade, “The stability and mixed conductivity in La and Fe doped SrTiO₃ in the search for potential SOFC anode materials”, J. Eur. Ceram. Soc., 21 (2001) 1831-5

F.M.Figueiredo, J.R.Frade, F.M.B.Marques, “Performance of composite LaCoO₃+La₂(Zr,Y)₂O₇ cathodes” , Solid State Ionics., 135 (2000) 463-7

J.A.Labrincha, F.M.B.Marques, J.R.Frade, "La₂Zr₂O₇ Formed at Ceramic Electrode/YSZ Contacts", J. Mat. Sci. 28 (1993) 3809

Membranes for oxygen separation & syngas

A.A.Yaremchenko, C.Buysse, V.Middelkoop, F.Snijkers, A.Buekenhoudt, J.R.Frade, A.V.Kovalevsky. Impact of sulphur contamination on the oxygen transport mechanism through Ba0.5Sr0.5Co0.8Fe0.2O_3-_d: relevant issues in the development of capillary and hollow fibre membrane geometry. J. Membrane. Sci., 428 (2013) 123

A.Kovalevsky, A.Yaremchenko, V.Kolotygin, A.Shaula, V.Kharton, F.Snijkers, A.Buekenhoudt J.R.Frade, E.Naumovich, Processing and oxygen permeation studies of asymmetric multilayer Ba0.5Sr0.5Co0.8Fe0.2O3-d membranes, J Membrane. Sci., 380 (2011) 68

D.P.Fagg, S.Garcia-Martin, V.V.Kharton, J.R.Frade Transport properties of fluorite-type Ce0.8Pr0.2O2-d: Optimization via the use of cobalt oxide sintering aid", Chem. Mater, 21 (2009) 381

Fagg DP, Shaula AL, Kharton VV, Frade JR, High oxygen permeability in fluorite-type Ce_0.8Pr_0.2O_2-d via the use of sintering aids, J Membrane Sci, 299 (2007) 1

Kharton VV, Kovalevsky AV, Avdeev M, Tsipis EV, Patrakeev MV, Yaremchenko AA, Naumovich EN, Frade JR, Chemically induced expansion of La2NiO_4+d-based materials, Chem. Mat. 19 (2007) 2027

A.V.Kovalevsky, V.V.Kharton, F.Maxim, A.L.Shaula and J.R.Frade, Processing and characterization of La_0.5Sr_0.5FeO₃-supported Sr_1-xFe(Al)O₃-SrAl₂O₄ composite membranes, J.Membrane Sci., 278(2006)162

V.V. Kharton, A.L. Shaula_, F.M.M. Snijkers, J.F.C. Cooymans, J.J. Luyten, A.A. Yaremchenko, A.A. Valente, E.V. Tsipis, J.R. Frade, F.M.B. Marques and J. Rocha, Processing, stability and oxygen permeability of Sr(Fe,Al)O₃-based ceramic membranes, J. Membrane Sci., 252 (2005) 215

V.V. Kharton, A.A. Yaremchenko, A.A. Valente, V.A. Sobyanin, V.D. Belyaev, G.L. Semin, S.A. Veniaminov, E.V. Tsipis, A.L. Shaula, J.R. Frade and J. Rocha, Methane oxidation over Fe-, Co-, Ni- and V-containing mixed conductors, Solid State Ionics, 2005, vol. 176, pp. 781

Kharton VV, Yaremchenko AA, Tsipis EV, Valente AA, Patrakeev MV, Shaula AL, Frade JR, Rocha, “Characterization of mixed-conducting La2Ni0.9Co0.1O4+delta membranes for dry methane oxidation”, Applied Catalysis A- General, 261 (2004), 25

F.M.Figueiredo, V.V.Kharton, A.P.Viskup, J.R.Frade, “Surface enhanced oxygen permeation in CaTi1-xFexO3-d ceramic membranes”, J. Membrane Sci., 236 (2004) 73

V.V.Kharton, A.A.Yaremchenko, A.L. Shaula, M.V.Patrakeev, E.N.Naumovich, D.I.Loginovich, J.R.Frade, F.M.B.Marques, “Transport properties and stability of Ni-containing mixed conductors with perovskite- and K2NiF4-type structure”, J. Solid State Chem., 177 (2004) 26

A.A. Yaremchenko, V.V. Kharton, M.V. Patrakeev and J.R. Frade, p-type electronic conductivity, oxygen permeability and stability of La₂Ni_0.9Co_0.1O₄₊_d, J. Mat. Chem., 13 (2003) 1136.

V.V.Kharton, A.V.Kovalevsky, E.V.Tsipis, A.P.Viskup, E.N.Naumovich, J.R.Jurado and J.R.Frade, Mixed conductivity and stability of A-site-deficient Sr(Fe,Ti)O_3-_d perovskites, Journal of Solid State Electrochemistry, 2002, vol.7, pp.30.

V.V.Kharton, A.P.Viskup, A.V.Kovalevsky, F.M.Figueiredo, J.R.Jurado, A.A.Yaremchenko, E.N.Naumovich, J.R.Frade, “Surface limited ionic transport in perovskites Sr_0.97(Ti,Fe,Mg)O_3-_d”, J. Mat. Chem., 10 (2000) 1161

J.R.Jurado, F.M.Figueiredo, B.Gharbage, J.R.Frade, Electrochemical permeability of Sr_0.97(Ti,Fe)_3-_d materials", Solid State Ionics, 118 (1999) 89

Solid state electrochemical methods

S.I.R.Costa, M.Li, J.R.Frade, D.C.Sinclair, Modulus spectroscopy of CaCu3Ti4O12 ceramics: clues to the internal barrier layer capacitance mechanism, RSC Advances, 3 (2013) 7030

A.L. Ferreira, A.L. Horovistiz, J.C.C. Abrantes, D. Pérez-Coll, P. Núñez, J.R. Frade, De-convolution of bulk and interfacial contributions based on impedance spectroscopy with external load resistance”, Mat. Res. Bull., 44 (2009) 884

J.R.Frade, V.V.Kharton, A.A. Yaremchenko, E.V.Tsipis, Applicability of emf measurements under external load resistance conditions for ion transport number determination, J. Sol. State Electrochem., 10 (2006) 96

V.V.Kharton, A.V.Kovalevsky, A.V.Viskup, F.M.Figueiredo, J.R.Frade, A.A.Yaremchenko, E.N.Naumovich, “Faradaic efficiency and oxygen permeability of Sr_0.97Ti_1-x Fe_xO_3-_d perovskite”, Solid State Ionics, 128 (2000) 117

B.Gharbage, F.M.B.Marques, J.R.Frade, "Electrolyte changes by point contact electrodes on Sr(Zr,Dy)O_3-_d“, Solid State Ionics, 136/7 (2000) 933

J.R.Jurado, M.T.Colomer, J.R.Frade, “Caracterization of Sr_0.97Ti_1-x Fe_xO_3-_d by impedance spectroscopy. Part I: Materiais with low Fe contents”, J. Amer. Ceram. Soc., 83 (2000) 2715

J.C.C.Abrantes, J.A.Labrincha, J.R.Frade, “Applicability of the brick layer model to describe the grain boundary properties of strontium titanate ceramics”, J. Eur. Ceram. Soc., 20 (2000) 1603

J.C.C.Abrantes, J.A.Labrincha, J.R.Frade, “Representations of impedance spectra of ceramics: Part I. Simulated study cases”, Mat. Res. Bull., 35 (2000) 965

J.C.C.Abrantes, J.A.Labrincha, J.R.Frade, “Representations of impedance spectra of ceramics: Part II. Spectra of polycrystalline SrTiO₃”, Mat. Res. Bull., 35 (2000) 977

J.C.C.Abrantes, J.A.Labrincha, J.R.Frade, “An alternative representation of impedance spectra of ceramics”, Mat. Res. Bull, 35 (2000) 741

J.R.Frade, "Theoretical behaviour of concentration cells based on ABO₃ perovskite materials with protonic and oxygen ion conduction", Solid State Ionics, 78 (1995) 87

R.M.C.Marques, F.M.B.Marques, J.R.Frade, "Characterization of mixed conductors by dc techniques. Part I: Theoretical solutions", Solid State Ionics, 73 (1994) 15

Solid state kinetics, thermodynamics & synthesis

J.F.Monteiro, A.A.L.Ferreira, I.Antunes, D.P.Fagg, J.R.Frade,“Thermodynamic restrictions on mechanosynthesis of strontium titanate, J. Sol. State Chem. 185 (2012) 143

Antunes I, Brandao A, Figueiredo FM, Frade JR, Gracio J, Fagg DP. Mechanosynthesis of nanopowders of the proton-conducting electrolyte material Ba(Zr, Y)O_3-d, J Solid State Chem. 182 (2009) 2149

A.Brandão, J.F.Monteiro, A.V. Kovalevsky, D.P. Fagg, V.V.Kharton, J.R.Frade, “Guidelines for improving resistance to CO2 of materials for solid state electrochemical systems”, Solid State Ionics, 192 (2011) 16

J.R.Frade, V.V.Kharton, A.Yaremchenko, E.Naumovich, “Methane to syngas conversion: Part I: Equilibrium conditions and stability requirements of membrane materials”, J. Power Sources, 130 (2004) 77

J.R.Frade, V.V.Kharton, D.Marrero Lopez, P.Nunez, J.C.C.Abrantes, “Kinetics of phase transformation for constant heating rate occurring close to the thermodynamic transition”, Thermochimica Acta, 435 (2005) 84

E.V.Tsipis, V.V.Kharton, I.A.Bashmakov, E.N.Naumovich, J.R.Frade, “Cellulose precursor synthesis of nanocrystalline Ce_0.8Gd_0.2O_2-_d for SOFC anodes”, J. Solid State Electrochem., 8 (2004) 674

A.Ringuedé, J.R.Frade, J.A.Labrincha, “Combustion synthesis of zirconia-based cermet powders”, Ionics, 6 (2000) 273

A.L.Oliveira, M.Oliveira, R.N.Correia, M.H.F.V.Fernandes, J.R.Frade, "Crystallization of whitlockite from a glass in the system CaO.P₂O₅.SiO₂.MgO, J. Amer. Ceram. Soc., 81 (1998) 3270

J.R.Frade, "Crystallization with variable temperature: Corrections for the activation energy", J. Amer. Ceram. Soc., 81 (1998) 2654

D.A.Fumo, J.R.Jurado, A.M.Segadães, J.R.Frade, "Combustion synthesis of iron substituted strontium titanate perovskites", Mat. Res. Bull., 32 (1997) 1459

J.R.Frade, M.Cable, "Numerical solutions for mixed control of powder reactions for spherical, cylindrical, or planar particles", J.Amer.Ceram. Soc., 78 (1995) 90.

J.R.Frade, M.Cable, "Reexamination of the basic theoretical Model for the Kinetics of solid state reactions", J. Amer. Ceram. Soc., 75 (1992) 1949

Materials for waste heat conversion & storage (thermoelectrics, PCM,…)

N.Vitorino, J.C.C.Abrantes, J.R.Frade, Gelled Graphite/Gelatin Composites For Latent Heat Cold Storage, Applied Energy, 104 (2013) 890

N.Vitorino, J.C.C.Abrantes, J.R.Frade, PCM/graphite composites with improved thermal and electrical response, Mat.Lett., 92 (2013) 100

N.Vitorino, J.C.C.Abrantes, J.R.Frade, Cellular ceramics processed by paraffin emulsified suspensions with collagen consolidation, Mat. Lett. 98 (2013) 120

N.Vitorino, J.C.C.Abrantes, J.R.Frade, “Numerical solutions for mixed controlled solidification of phase change materials” Int. J. Heat Mass Trans., 53 (2010) 5335

A.V. Kovalevsky, A.A. Yaremchenko, S. Populoh, A. Weidenkaff, J.R. Frade, Enhancement of thermoelectric performance in strontium titanate by praseodymium additions, J. Appl. Phys. 113 (2013) 053704.

Materials & catalysts for carbon lean technologies

J.F. Monteiro, J.Waerenborgh, A.Kovalevsky, A.Yaremchenko, J.R.Frade, Synthesis of Sr0.9K0.1FeO3d electrocatalysts by mechanical activation, J. Solid State Chem., 198 (2013) 169

N.M. Ferreira, A. Kovalsky, M.A. Valente, M.F. Costa, J. Frade, Magnetite/Hematite core/shell fibres grown by laser floating zone method, Appl. Surf. Sci., 278 (2013) 203

AV Kovalevsky, EN Naumovich, AA Yaremchenko, JR Frade, High-temperature conductivity, stability and redox properties of Fe_3-xAl_xO₄ spinel-type materials, J. Eur. Ceram. Soc., 32 (2012) 3255

A.Yaremchenko, A.Kovalevsky, E.Naumovich, V.Kharton, J.Frade, High temperature electrical properties of magnesiowustite Mg_1-xFe_xO and spinels Fe_3-x-yMg_xCr_yO₄ ceramics, Solid State Ionics, 192 (2011) 252

Poznyak SK, Kharton VV, Frade JR, Yaremchenko AA, Tsipis, EV, Yakovlev SO, Marozau IP, “Behaviour of (La,Sr)CoO₃ and La₂NiO₄-based ceramic anodes in alkaline media: Compositional and microstructural factors” J. Sol. State Electrochem., 12 (2008) 15

Main scientific interests

Research Interests

1) High temperature electrochemical applications

Envisaged applications are solid oxide fuel cells, mixed conducting membranes for oxygen separation or partial oxidation of hydrocarbons, gas sensors, materials for high temperature electrolysis, oxygen pumping, etc. This involves research on electrolytes, electrodes, electrocatalysts and interconnectors, their properties and performance, including transport properties, electrocatalytic activity, thermal and chemical compatibility between different cell materials.

1.1 Solid state electrochemical systems (SOFC, etc.l: materials and concepts

A wide variety of materials has been studied during the last decades, including zirconias, cerias, perovskytes (e.g. LaGaO₃), rare-earth pyrochlores (e.g. Ln₂Ti₂O₇), silicates (La_10-x(Si,Al)₆O_26+d,…), LaMOX, etc. The main emphasis has been on materials with enhanced properties for operation at lower temperatures, alternative less expensive materials or materials, and materials with enhanced durability and tolerant to contamination or harsher conditions.

Novel anodes materials are studied for intermediate-temperature electrochemical systems (IT SOFCs) and as alternative anodes for direct conversion of hydrocarbons without previous reforming. One attempts to develop anodes with enhanced electrocatalytic activity, microstructural stability, redox stability and sulphur tolerance. Actual anodes concepts include alternative cermets, and redox tolerant ceramic conductors such as (Sr,Ln)TiO₃ or (Sr,La)VO₃.

Work on cathode materials is focused on their transport and electrocatalytic properties for operation at lower temperatures, and their thermochemical compatibility with other SOFC components. Relevant materials include perovskytes such as Sr(Co,Fe)O3 and (Ba,Sr)(Co,Fe)O₃, layered materials such as La₂Ni_0.8Cu_0.2O_4+d and other RP phases. Suitable methods are being used to obtain nanocrystalline powders of these cathode materials.

New guidelines for work in the near future also include interconnecting materials, with emphasis on spinels for redox protection of metallic substrates and to act as barriers for Cr interdiffusion

1.2 Mixed conducting materials for oxygen separation or partial oxidation of hydrocarbons

Dense ceramic membranes with mixed oxygen-ionic and electronic conductivity has been studied for application in oxygen separation or conversion of hydrocarbons to syngas. Though activities in the recent past included studies of a very wide variety of materials with different structe types, this is now mainly directed to overcoming some of the stricter limitations for successful application such as the complex thermochemical expansion of most of these materials and long term degradation of mixed conductivity or surface exchange.

2 Solid state kinetics, thermodynamics and synthesis

The main interests correspond to a variety of powder preparation methods such as mechanochemical synthesis, combustion synthesis, freeze drying, cellulose precursor replication, …).

Ceramic processing is being studied as a guideline for microstructural and structural design, for their impact on properties. This includes sintering under unusual conditions (reducing atmospheres, hot-pressing,…) and less common firing schedules (e.g. 2-step sintering). Processing of highly porous cellular ceramics is developed for porous components of energy conversion systems (electrodes or electrocatalysts) and for their potential to extent research activities to a variety of other technologies.

Thermodynamic analysis is used to study interactions in multicomponents systems (e.g. SOFC), to assess redox stability or reactivity with gases, and thermodynamic restrictions on solid state reactions.

Other research activities include mathematical modelling of phase transformations and reactions in the solid state, for non-isothermal conditions or on combining steps of isothermal conditions and variable temperature. These models are used to extract kinetic information from thermal analyses (DTA, TGA, DSC, dilatometry) and transient response obtained by other methods (e.g. electrical conductivity, electrochemical titration).

3 Materials for heat conversion and storage (PCM, thermoelectrics,…)

Ongoing interests are related to other technologies for renwable energies, with emphasis on conversion or storage of natural heat sources (e.g. solar) or waste heat, by thermoelectric applications and phase change materials for heat or cold storage. Work on oxide thermoelectrics seeks conversion of heat sources combining higher temperatures and other harsher conditions (e.g. reducing). Research on heat or cold storage is mainly directed to enhance the thermal response for fast charge and/or discharge; this is mostly based on designed organization of highly conducting inclusions.

4 Materials & catalysts for carbon lean technologies

Other research projects are related to the development of alternative technologies to replace CO₂-intensive high temperature industrial processes, with emphasis on less common technologies of direct electrochemical reduction of metal oxides and pyroelectrolysis. The group is extending the activities to electrochemical processing as alternative route for metallic alloys, cermets or composites.

present projects

Ongoing Reseach Contracts

SIDERWIN /H2020 European project DLV-768788/ Development of new methodologies for industrial CO2-free steel production by electrowinning (leader at UA)

LEANCOMB /POCI-01-0145-FEDER016769/ Cellular oxide catalysts for emission lean combustion in porous media (leader)

NOTARGAS /POCI-01-0145-FEDER030661/ Novel catalyst concepts for oxi-steam fasification of biomass (leader)

HEALING /POCI-01-0145-FEDER032036/ Healing of solid oxide fuel cell materials (leader at UA)

UFA+EE /POCI-01-0247-FEDER-033755/ Unidade de frio autónomo e eficiente energeticamente (participant)

SUSPHOTOSOLUTIONS /Centro 01-0145-FEDER-000005 / Sustainable photovoltaic solutions (Participant)

SGH /POCI-01-0247-FEDER-007678/ Smart Green Homes (participant)

Publications

Redox-Promoted Tailoring of the High-Temperature Electrical Performance in Ca3Co4O9 Thermoelectric Materials by Metallic Cobalt Addition

Constantinescu, G; Sarabando, AR; Rasekh, S; Lopes, D; Sergiienko, S; Amirkhizi, P; Frade, JR; Kovalevsky, AV
2020, MATERIALS, 13, 5.
ISBN: 1996-1944

Ilmenite as low-cost catalyst for producer gas quality improvement from a biomass pilot-scale gasifier

Pio, DT; Gomes, HGMF; Tarelho, LAC; Ruivo, LCM; Matos, MAA; Pinto, RG; Frade, JR; Lemos, FMS
2020, ENERGY REPORTS, 6, 325-330.

Redox engineering of strontium titanate-based thermoelectrics

Kovalevsky, AV; Zakharchuk, KV; Aguirre, MH; Xie, W; Patricio, SG; Ferreira, NM; Lopes, D; Sergiienko, SA; Constantinescu, G; Mikhalev, SM; Weidenkaff, A; Frade, JR
2020, JOURNAL OF MATERIALS CHEMISTRY A, 8, 15, 7317-7330.
ISBN: 2050-7496

Cellular zirconia ceramics processed by direct emulsification

Ivanova, YA; Freitas, C; Lopes, DV; Kovalevsky, AV; Frade, JR
2020, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 40, 54, 2056-2062.
ISBN: 1873-619X

Design of Multifunctional Titania-Based Photocatalysts by Controlled Redox Reactions

Lopes, D; Daniel-da-Silva, AL; Sarabando, AR; Arias-Serrano, BI; Rodriguez-Aguado, E; Rodriguez-Castellon, E; Trindade, T; Frade, JR; Kovalevsky, AV
2020, MATERIALS, 13, 3.
ISBN: 1996-1944

Guidelines to adjust particle size distributions by wet comminution of a bioactive glass determined by Taguchi and multivariate analysis

Ben-Arfa, BAE; Salvado, IMM; Frade, JR; Pullar, RC
2019, CERAMICS INTERNATIONAL, 45, 3, 3857-3863.
ISBN: 1873-3956

Design guidelines for titania-silica-alumina ceramics with tuned anatase to rutile transformation

Feltrin, J; De Noni, A; Hotza, D; Frade, JR
2019, CERAMICS INTERNATIONAL, 45, 5, 5179-5188.
ISBN: 1873-3956

Synergistic effects of zirconium- and aluminum co-doping on the thermoelectric performance of zinc oxide

Zakharchuk, KV; Tobaldi, DM; Xiao, XX; Xie, WJ; Mikhalev, SM; Martins, JF; Frade, JR; Weidenkaff, A; Kovalevsky, AV
2019, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 39, 4, 1222-1229.
ISBN: 1873-619X

Highly-porous mayenite-based ceramics by combined suspension emulsification and reactive sintering

Baptista, M; Kovalevsky, AV; Sarabando, AR; Ferro, MC; Capela, I; Frade, JR
2019, MATERIALS LETTERS, 237, 41-44.
ISBN: 1873-4979

Compromising Between Phase Stability and Electrical Performance: SrVO3-SrTiO3 Solid Solutions as Solid Oxide Fuel Cell Anode Components

Macias, J; Yaremchenko, AA; Rodriguez-Castellon, E; Starykevich, M; Frade, JR
2019, CHEMSUSCHEM, 12, 1, 240-251.
ISBN: 1864-564X

Electrochemical reduction of hematite-based ceramics in alkaline medium: Challenges in electrode design

Lopes, DV; Ivanova, YA; Kovalevsky, AV; Sarabando, AR; Frade, JR; Quina, MJ
2019, ELECTROCHIMICA ACTA, 327.
ISBN: 1873-3859

Synthetic fayalite Fe2SiO4 by kinetically controlled reaction between hematite and silicon carbide

Pinto, RG; Yaremchenko, AA; Baptista, MF; Tarelho, LAC; Frade, JR
2019, JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 102, 9, 5090-5102.
ISBN: 1551-2916

Exploring Tantalum as a Potential Dopant to Promote the Thermoelectric Performance of Zinc Oxide

Arias-Serrano, BI; Xie, WJ; Aguirre, MH; Tobaldi, DM; Sarabando, AR; Rasekh, S; Mikhalev, SM; Frade, JR; Weidenkaff, A; Kovalevsky, AV
2019, MATERIALS, 12, 13.
ISBN: 1996-1944

Catalytic Efficiency of Red Mud for the Degradation of Olive Mill Wastewater through Heterogeneous Fenton's Process

Domingues, E; Assuncao, N; Gomes, J; Lopes, DV; Frade, JR; Quina, MJ; Quinta-Ferreira, RM; Martins, RC
2019, WATER, 11, 6.

Unusual redox behaviour of the magnetite/hematite core-shell structures processed by the laser floating zone method

Ferreira, NM; Ferro, MC; Valente, MA; Frade, JR; Costa, FM; Kovalevsky, AV
2018, DALTON TRANSACTIONS, 47, 16, 5646-5651.

Design of aluminamonoliths by emulsion-gel casting: Understanding the monolith structure from a rheological approach

Nayak, N; Vitorino, N; Frade, JR; Kovalevsky, AV; Alves, VD; Crespo, JG; Portugal, CAM
2018, MATERIALS & DESIGN, 157, 119-129.

Processing of highly-porous cellular iron oxide-based ceramics by emulsification of ceramic suspensions

Lopes, DV; Kovalevsky, AV; Quina, MJ; Frade, JR
2018, CERAMICS INTERNATIONAL, 44, 16, 20354-20360.

A self-forming nanocomposite concept for ZnO-based thermoelectrics

Zakharchuk, KV; Widenmeyer, M; Alikin, DO; Xie, WJ; Populoh, S; Mikhalev, SM; Tselev, A; Frade, JR; Weidenkaff, A; Kovalevsky, AV
2018, JOURNAL OF MATERIALS CHEMISTRY A, 6, 27, 13386-13396.

Catalyzed Microwave-Assisted Preparation of Carbon Quantum Dots from Lignocellulosic Residues

Rodriguez-Padron, D; Algarra, M; Tarelho, LAC; Frade, J; Franco, A; de Miguel, G; Jimenez, J; Rodriguez-Castellon, E; Luque, R
2018, ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 6, 6, 7200-7205.

Low-cost catalysts for in-situ improvement of producer gas quality during direct gasification of biomass

Pio, DT; Tarelho, LAC; Pinto, RG; Matos, MAA; Frade, JR; Yaremchenko, A; Mishra, GS; Pinto, PCR
2018, ENERGY, 165, 442-454.

Structural and redox effects in iron-doped magnesium aluminosilicates

Ferreira, NM; Kovalevsky, AV; Valente, MA; Waerenborgh, JC; Frade, JR; Costa, FM
2017, JOURNAL OF CRYSTAL GROWTH, 457, 19-23.

Designing strontium titanate-based thermoelectrics: insight into defect chemistry mechanisms

Kovalevsky, AV; Aguirre, MH; Populoh, S; Patricio, SG; Ferreira, NM; Mikhalev, SM; Fagg, DP; Weidenkaff, A; Frade, JR
2017, JOURNAL OF MATERIALS CHEMISTRY A, 5, 8, 3909-3922.

Structure and Electrical -Transport Relations in Ba(Zr,Pr)O3-delta Perovskites

Antunes, I; Amador, U; Alves, A; Correia, MR; Ritter, C; Frade, JR; Perez-Coll, D; Mather, GC; Fagg, DP
2017, INORGANIC CHEMISTRY, 56, 15, 9120-9131.
ISBN: 1520-510X

Exploring the effects of silica and zirconia additives on electrical and redox properties of ferrospinels

Ferreira, NM; Ferro, MC; Fagg, DP; Costa, FM; Frade, JR; Kovalevsky, AV
2017, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 37, 7, 2621-2628.
ISBN: 1873-619X

Design of NiAl2O4 cellular monoliths for catalytic applications

Vitorino, NMD; Kovalevsky, AV; Ferro, MC; Abrantes, JCC; Frade, JR
2017, MATERIALS & DESIGN, 117, 332-337.
ISBN: 1873-4197

Flexible design of cellular Al2TiO5 and Al2TiO5-Al2O3 composite monoliths by reactive firing

Lalli, E; Vitorino, NMD; Portugal, CAM; Crespo, JG; Boi, C; Frade, JR; Kovalevsky, AV
2017, MATERIALS & DESIGN, 131, 92-101.
ISBN: 1873-4197

Designed porous microstructures for electrochemical reduction of bulk hematite ceramics

Ivanova, YA; Monteiro, JF; Teixeira, LB; Vitorino, N; Kovalevsky, AV; Frade, JR
2017, MATERIALS & DESIGN, 122, 307-314.
ISBN: 1873-4197

Thermal properties of compacted pharmaceutical excipients

Krok, A; Vitorino, N; Zhang, JY; Frade, JR; Wu, CY
2017, INTERNATIONAL JOURNAL OF PHARMACEUTICS, 534, 1-2, 119-127.

Fast route for synthesis of stoichiometric hydroxyapatite by employing the Taguchi method

Ben-Arfa, BAE; Salvado, IMM; Frade, JR; Pullar, RC
2016, MATERIALS & DESIGN, 109, 547-555.

A new concept of ceramic consumable anode for iron pyroelectrolysis in magnesium aluminosilicate melts

Ferreira, NM; Kovalevsky, AV; Ferro, MC; Costa, FM; Frade, JR
2016, CERAMICS INTERNATIONAL, 42, 9, 11070-11076.

Cellular MgAl2O4 spinels prepared by reactive sintering of emulsified suspensions

Vitorino, N; Freitas, C; Kovalevsky, AV; Abrantes, JCC; Frade, JR
2016, MATERIALS LETTERS, 164, 190-193.

Enhanced stability of perovskite-like SrVO3-based anode materials by donor-type substitutions

Macias, J; Yaremchenko, AA; Frade, JR
2016, JOURNAL OF MATERIALS CHEMISTRY A, 4, 26, 10186-10194.

Guidelines to design multicomponent ferrospinels for high-temperature applications

Ferreira, NM; Ferro, MC; Mikhalev, SM; Costa, FM; Frade, JR; Kovalevsky, AV
2016, RSC ADVANCES, 6, 39, 32540-32548.

Iron incorporation into magnesium aluminosilicate glass network under fast laser floating zone processing

Ferreira, NM; Kovalevsky, AV; Valente, MA; Sobolev, NA; Waerenborgh, JC; Costa, FM; Frade, JR
2016, CERAMICS INTERNATIONAL, 42, 2, 2693-2698.

Mixed ionic-electronic conductivity and thermochemical expansion of Ca and Mo co-substituted pyrochlore-type Gd2Ti2O7

Zakharchuk, K; Kravchenko, E; Fagg, DP; Frade, JR; Yaremchenko, AA
2016, RSC ADVANCES, 6, 74, 70186-70196.

Processing Effects on Properties of (Fe,Mg,Al)(3)O-4 Spinels as Potential Consumable Anodes for Pyroelectrolysis

Ferreira, NM; Kovalevsky, AV; Costa, FM; Frade, JR
2016, JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 99, 6, 1889-1893.

Quality criteria for phase change materials selection

Vitorino, N; Abrantes, JCC; Frade, JR
2016, ENERGY CONVERSION AND MANAGEMENT, 124, 598-606.

Rare-Earth-Substituted Strontium Titanate: Insight into Local Oxygen-Rich Structures and Redox Kinetics

Yaremchenko, AA; Naumovich, EN; Patricio, SG; Merkulov, OV; Patrakeev, MV; Frade, JR
2016, INORGANIC CHEMISTRY, 55, 10, 4836-4849.

Reduction of magnetite to metallic iron in strong alkaline medium

Monteiro, JF; Ivanova, YA; Kovalevsky, AV; Ivanou, DK; Frade, JR
2016, ELECTROCHIMICA ACTA, 193, 284-292.

Self-functionalization of cellular alumina monoliths in hydrothermal conditions

Vitorino, NMD; Kovalevsky, AV; Azevedo, MCC; Abrantes, JCC; Frade, JR
2016, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 36, 4, 1053-1058.

Site Redistribution, Partial Frozen-in Defect Chemistry, and Electrical Properties of Ba1-x(Zr,Pr)O3-delta

Antunes, I; Milchalev, S; Mather, GC; Kharton, VV; Figueiras, FG; Alves, A; Rodrigues, J; Correia, MR; Frade, JR; Fagg, DP
2016, INORGANIC CHEMISTRY, 55, 17, 8552-8563.

Boosting Thermoelectric Performance by Controlled Defect Chemistry Engineering in Ta-Substituted Strontium Titanate

Yaremchenko, AA; Populoh, S; Patricio, SG; Macias, J; Thiel, P; Fagg, DP; Weidenkaff, A; Frade, JR; Kovalevsky, AV
2015, CHEMISTRY OF MATERIALS, 27, 14, 4995-5006.

Structural and defect chemistry guidelines for Sr(V,Nb)O-3-based SOFC anode materials

Macias, J; Yaremchenko, AA; Fagg, DP; Frade, JR
2015, PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 17, 16, 10749-10758.

Hydrothermal synthesis of boehmite in cellular alumina monoliths for catalytic and separation applications

Vitorino, NMD; Kovalevsky, AV; Abrantes, JCC; Frade, JR
2015, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 35, 11, 3119-3125.

Cellular ceramics by gelatin gelcasting of emulsified suspensions with sunflower oil

Sanches, MF; Vitorino, N; Freitas, C; Abrantes, JCC; Frade, JR; Neto, JBR; Hotza, D
2015, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 35, 9, 2577-2585.

Extrusion of ceramic emulsions: Preparation and characterization of cellular ceramics

Freitas, C; Vitorino, N; Ribeiro, MJ; Abrantes, JCC; Frade, JR
2015, APPLIED CLAY SCIENCE, 109, 15-21.

Porous hollow tubes processed by extrusion of ceramic emulsions

Vitorino, N; Freitas, C; Ribeiro, MJ; Abrantes, JCC; Frade, JR
2015, APPLIED CLAY SCIENCE, 105, 60-65.

Burnout effects on cellular ceramics obtained from gelatine gelcasted emulsified suspensions

Freitas, C; Vitorino, N; Abrantes, JCC; Frade, JR
2015, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 35, 3, 971-979.

Electrochemical deposition of Fe and Fe/CNTs composites from strongly alkaline hematite suspensions

Ivanova, YA; Monteiro, JF; Horovistiz, AL; Ivanou, DK; Mata, D; Silva, RF; Frade, JR
2015, JOURNAL OF APPLIED ELECTROCHEMISTRY, 45, 5, 515-522.

Design of SrTiO3-Based Thermoelectrics by Tungsten Substitution

Kovalevsky, AV; Populoh, S; Patricio, SG; Thiel, P; Ferro, MC; Fagg, DP; Frade, JR; Weidenkaff, A
2015, JOURNAL OF PHYSICAL CHEMISTRY C, 119, 9, 4466-4478.

Prospects and challenges of iron pyroelectrolysis in magnesium aluminosilicate melts near minimum liquidus temperature

Ferreira, NM; Kovalevsky, AV; Mikhalev, SM; Costa, FM; Frade, JR
2015, PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 17, 14, 9313-9325.

Redox transitions in strontium vanadates: Electrical conductivity and dimensional changes

Macias, J; Yaremchenko, AA; Frade, JR
2014, JOURNAL OF ALLOYS AND COMPOUNDS, 601, 186-194.

Ni-YSZ cermets for solid oxide fuel cell anodes via two-step firing

Davarpanah, A; Yaremchenko, AA; Fagg, DP; Frade, JR
2014, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 39, 27, 15046-15056.

Effects of transition metal additives on redox stability and high-temperature electrical conductivity of (Fe,Mg)(3)O-4 spinels

Ferreira, NM; Kovalevsky, AV; Naumovich, EN; Yaremchenko, AA; Zakharchuk, KV; Costa, FM; Frade, JR
2014, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 34, 10, 2339-2350.

Crystallization of iron-containing Si-Al-Mg-O glasses under laser floating zone conditions

Ferreira, NM; Kovalevsky, AV; Waerenborgh, JC; Quevedo-Reyes, M; Timopheev, AA; Costa, FM; Frade, JR
2014, JOURNAL OF ALLOYS AND COMPOUNDS, 611, 57-64.

Towards a high thermoelectric performance in rare-earth substituted SrTiO3: effects provided by strongly-reducing sintering conditions

Kovalevsky, AV; Yaremchenko, AA; Populoh, S; Thiel, P; Fagg, DP; Weidenkaff, A; Frade, JR
2014, PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 16, 48, 26946-26954.

Effect of A-Site Cation Deficiency on the Thermoelectric Performance of Donor-Substituted Strontium Titanate

Kovalevsky, AV; Yaremchenko, AA; Populoh, S; Weidenkaff, A; Frade, JR
2014, JOURNAL OF PHYSICAL CHEMISTRY C, 118, 9, 4596-4606.

Re-examination of effects of alumina on bulk and grain boundary conductivities of CGO solid electrolytes

Marrero-Jerez, J; Nunez, P; Frade, JR
2014, SOLID STATE IONICS, 256, 11-18.

Effects of processing parameters on cellular ceramics obtained by paraffin emulsified suspensions

Sanches, MF; Vitorino, N; Abrantes, JCC; Frade, JR; Neto, JBR; Hotza, D
2014, CERAMICS INTERNATIONAL, 40, 7, 9045-9053.

Enhanced BaZrO3 mechanosynthesis by the use of metastable ZrO2 precursors

Sherafat, Z; Antunes, I; Almeida, C; Frade, JR; Paydar, MH; Mather, GC; Fagg, DP
2014, DALTON TRANSACTIONS, 43, 24, 9324-9333.

Highly conducting core-shell phase change materials for thermal regulation

Vitorino, N; Abrantes, JCC; Frade, JR
2014, APPLIED THERMAL ENGINEERING, 66, 01-Feb, 131-139.

Extrusion of ceramic emulsions: Plastic behavior

Vitorino, N; Freitas, C; Ribeiro, MJ; Abrantes, JCC; Frade, JR
2014, APPLIED CLAY SCIENCE, 101, 315-319.

Extrusion of ceramic pastes: An alternative approach to obtain the Benbow's model parameters

Vitorino, N; Ribeiro, MJ; Abrantes, JCC; Labrincha, JA; Frade, JR
2014, CERAMICS INTERNATIONAL, 40, 9, 14543-14547.

Thermochemical expansion of mixed-conducting (Ba,Sr)Co0.8Fe0.2O3-delta ceramics

Yaremchenko, AA; Mikhalev, SM; Kravchenko, ES; Frade, JR
2014, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 34, 3, 703-715.

Thermochemical behavior and transport properties of Pr-substituted SrTiO3 as potential solid oxide fuel cell anode

Yaremchenko, AA; Patricio, SG; Frade, JR
2014, JOURNAL OF POWER SOURCES, 245, 557-569.

Impact of sulphur contamination on the oxygen transport mechanism through Ba0.5Sr0.5Co0.8Fe0.2O3-delta: Relevant issues in the development of capillary and hollow fibre membrane geometry.

Yaremchenko, AA; Buysse, C; Middelkoop, V; Snijkers, F; Buekenhoudt, A; Frade, JR; Kovalevsky, AV
2013, JOURNAL OF MEMBRANE SCIENCE, 428, 123-130.

Redox stability and electrical conductivity of Fe2.3Mg0.7O4 +/-delta spinel prepared by mechanochemical activation

Domingues, EM; Tsipis, EV; Yaremchenko, AA; Figueiredo, FM; Waerenborgh, JC; Kovalevsky, AV; Frade, JR
2013, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 33, 7, 1307-1315.

Enhancement of thermoelectric performance in strontium titanate by praseodymium substitution

Kovalevsky, AV; Yaremchenko, AA; Populoh, S; Weidenkaff, A; Frade, JR
2013, JOURNAL OF APPLIED PHYSICS, 113, 5.

Synthesis of Sr0.9K0.1FeO3-delta electrocatalysts by mechanical activation

Monteiro, JF; Waerenborgh, JC; Kovalevsky, AV; Yaremchenko, AA; Frade, JR
2013, JOURNAL OF SOLID STATE CHEMISTRY, 198, 169-175.

Redox stability and high-temperature electrical conductivity of magnesium-and aluminium-substituted magnetite

Kovalevsky, AV; Yaremchenko, AA; Naumovich, EN; Ferreira, NM; Mikhalev, SM; Costa, FM; Frade, JR
2013, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 33, 13-14, 2751-2760.

Magnetite/hematite core/shell fibres grown by laser floating zone method

Ferreira, NM; Kovalevsky, A; Valente, MA; Costa, FM; Frade, J
2013, APPLIED SURFACE SCIENCE, 278, 203-206.

Cellular ceramics processed by paraffin emulsified suspensions with collagen consolidation

Vitorino, N; Abrantes, JCC; Frade, JR
2013, MATERIALS LETTERS, 98, 120-123.

Gelled graphite/gelatin composites for latent heat cold storage

Vitorino, N; Abrantes, JCC; Frade, JR
2013, APPLIED ENERGY, 104, 890-897.

Effect of samarium content on onset of minor p-type conductivity in ceria-based electrolytes

Perez-Coll, D; Nunez, P; Frade, JR
2013, JOURNAL OF POWER SOURCES, 227, 145-152.

Cellular PCM/graphite composites with improved thermal and electrical response

Vitorino, N; Abrantes, JCC; Frade, JR
2013, MATERIALS LETTERS, 92, 100-103.

Modulus spectroscopy of CaCu3Ti4O12 ceramics: clues to the internal barrier layer capacitance mechanism

Costa, SIR; Li, M; Frade, JR; Sinclair, DC
2013, RSC ADVANCES, 3, 19, 7030-7036.

Aqueous tape casting of micro and nano YSZ for SOFC electrolytes

Baquero, T; Escobar, J; Frade, J; Hotza, D
2013, CERAMICS INTERNATIONAL, 39, 7, 8279-8285.

Electrical conductivity, thermal expansion and stability of Y- and Al-substituted SrVO3 as prospective SOFC anode material

Yaremchenko, AA; Brinkmann, B; Janssen, R; Frade, JR
2013, SOLID STATE IONICS, 247, 86-93.

SOLUTIONS FOR HEAT OR COLD DISCHARGE FROM ENCAPSULATED PHASE-CHANGE MATERIALS

Vitorino, N; Abrantes, JCC; Frade, JR
2013, NUMERICAL HEAT TRANSFER PART B-FUNDAMENTALS, 64, 6, 421-435.

Mechanochemical preparation, sintering aids and hybrid microwave sintering in the proton conductor Sr0.02La0.98Nb1-xVxO4-delta, x=0, 0.15

Brandao, AD; Antunes, I; Frade, JR; Torre, J; Mikhalev, SM; Fagg, DP
2012, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 37, 8, 7252-7261.

High-temperature conductivity, stability and redox properties of Fe3-xAlxO4 spinel-type materials

Kovalevsky, AV; Naumovich, EN; Yaremchenko, AA; Frade, JR
2012, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 32, 12, 3255-3263.

Thermodynamic restrictions on mechanosynthesis of strontium titanate

Monteiro, JF; Ferreira, AAL; Antunes, I; Fagg, DP; Frade, JR
2012, JOURNAL OF SOLID STATE CHEMISTRY, 185, 143-149.

Effect of phosphorus additions on the sintering and transport properties of proton conducting BaZr(0.85)Y(0.15)O3-delta

Soares, HS; Zhang, X; Antunes, I; Frade, JR; Mather, GC; Fagg, DP
2012, JOURNAL OF SOLID STATE CHEMISTRY, 191, 27-32.

Lanthanum oxide as a scavenging agent for zirconia electrolytes

Carvalho, T; Antunes, E; Calado, J; Figueiredo, FM; Frade, JR
2012, SOLID STATE IONICS, 225, 484-487.

Grain boundary conductivity of heterogeneous ceria gadolinia

Tanaka, R; Oliveira, WS; Brandao, A; Abrantes, JCC; Frade, JR
2012, ELECTROCHIMICA ACTA, 85, 116-121.

Transport, thermomechanical, and electrode properties of perovskite-type (La0.75-xSr0.25+x)(0.95)Mn0.5Cr0.5-xTixO3-delta(x=0-0.5)

Kolotygin, VA; Tsipis, EV; Shaula, AL; Naumovich, EN; Frade, JR; Bredikhin, SI; Kharton, VV
2011, JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 15, 2, 313-327.

The role of SiO2 and sintering temperature on the grain boundary properties of Ce0.8Sm0.2O2-delta

Perez-Coll, D; Nunez, P; Frade, JR
2011, JOURNAL OF POWER SOURCES, 196, 20, 8383-8390.

Model of two-step sintering conditions for yttria-substituted zirconia powders

Lourenco, MA; Cunto, GG; Figueiredo, FM; Frade, JR
2011, MATERIALS CHEMISTRY AND PHYSICS, 126, 1-2, 262-271.

Model of two-step sintering conditions for yttria-substituted zirconia powders (vol 126, pg 262, 2011)

Lourenco, MA; Cunto, GG; Figueiredo, FM; Frade, JR
2011, MATERIALS CHEMISTRY AND PHYSICS, 127, 1-2, 413-413.

Processing and oxygen permeation studies of asymmetric multilayer Ba0.5Sr0.5Co0.8Fe0.2O3-delta membranes

Kovalevsky, AV; Yaremchenko, AA; Kolotygin, VA; Shaula, AL; Kharton, VV; Snijkers, FMM; Buekenhoudt, A; Frade, JR; Naumovich, EN
2011, JOURNAL OF MEMBRANE SCIENCE, 380, 1-2, 68-80.

Guidelines for improving resistance to CO2 of materials for solid state electrochemical systems

Brandao, A; Monteiro, JF; Kovalevsky, AV; Fagg, DP; Kharton, VV; Frade, JR
2011, SOLID STATE IONICS, 192, 1, 16-20.

High-temperature electrical properties of magnesiowustite Mg1-xFexO and spinel Fe3-x-yMgxCryO4 ceramics

Yaremchenko, AA; Kovalevsky, AV; Naumovich, EN; Kharton, VV; Frade, JR
2011, SOLID STATE IONICS, 192, 1, 252-258.

Microstructure-property relations in composite yttria-substituted zirconia solid electrolytes

Fernandes, CM; Castela, A; Figueiredo, FM; Frade, JR
2011, SOLID STATE IONICS, 193, 1, 52-59.

Numerical solutions for mixed controlled solidification of phase change materials

Vitorino, N; Abrantes, JCC; Frade, JR
2010, INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 53, 23-24, 5335-5342.

Mixed transport properties of Ce1-xSmxO2-x/2 system under fuel cell operating conditions

Perez-Coll, D; Aguadero, A; Nunez, P; Frade, JR
2010, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 35, 20, 11448-11455.

Correlation between impedance spectra of bulk ceramics and films with in-plane configuration

Ferreira, AAL; Abrantes, JCC; Frade, JR
2010, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 30, 2, 221-225.

Stability of Ba(Zr,Pr,Y)O3-delta materials for potential application in electrochemical devices

Antunes, I; Mather, GC; Frade, JR; Gracio, J; Fagg, DP
2010, JOURNAL OF SOLID STATE CHEMISTRY, 183, 12, 2826-2834.

Enhanced Low-Temperature Proton Conduction in Sr0.02La0.98NbO4-delta by Scheelite Phase Retention

Brandao, AD; Antunes, I; Frade, JR; Torre, J; Kharton, VV; Fagg, DP
2010, CHEMISTRY OF MATERIALS, 22, 24, 6673-6683.

Effect of sintering additive and low temperature on the electrode polarization of CGO

Perez-Coll, D; Ruiz-Morales, JC; Marrero-Lopez, D; Nunez, P; Frade, JR
2009, JOURNAL OF ALLOYS AND COMPOUNDS, 467, 1-2, 533-538.

Mechanosynthesis of nanopowders of the proton-conducting electrolyte material Ba(Zr, Y)O3-delta

Antunes, I; Brandao, A; Figueiredo, FM; Frade, JR; Gracio, J; Fagg, DP
2009, JOURNAL OF SOLID STATE CHEMISTRY, 182, 8, 2149-2156.

De-convolution of bulk and interfacial contributions based on impedance spectroscopy with external load resistance

Ferreira, AAL; Horovistiz, AL; Abrantes, JCC; Perez-Coll, D; Nunez, P; Frade, JR
2009, MATERIALS RESEARCH BULLETIN, 44, 4, 884-888.

Effects of composition and frozen-in conditions on bulk and grain boundary conductivities of Yb2Ti2O7-based materials

Horovistiz, AL; Boguslavskii, MV; Abrantes, JCC; Shlyakhtina, AV; Fagg, DP; Shcherbakova, LG; Frade, JR
2009, SOLID STATE IONICS, 180, 11-13, 774-777.

Performance of perovskite-related oxide cathodes in contact with lanthanum silicate electrolyte

Yaremchenko, AA; Kharton, VV; Bannikov, DO; Znosak, DV; Frade, JR; Cherepanov, VA
2009, SOLID STATE IONICS, 180, 11-13, 878-885.

Ceria based mixed conductors with adjusted electronic conductivity in the bulk and/or along grain boundaries

Fagg, DP; Perez-Coll, D; Nunez, P; Frade, JR; Shaula, AL; Yaremchenko, AA; Kharton, VV
2009, SOLID STATE IONICS, 180, 11-13, 896-899.

Transport Properties of Fluorite-Type Ce0.8Pr0.2O2-delta: Optimization via the Use of Cobalt Oxide Sintering Aid

Fagg, DP; Garcia-Martin, S; Kharton, VV; Frade, JR
2009, CHEMISTRY OF MATERIALS, 21, 2, 381-391.

Sintering and Oxygen Transport in Ce0.8Pr0.2O2-delta: A Comparative Study of Mn and Co Oxide Additives

Fagg, DP; Garcia-Martin, S; Pascual, MJ; Kharton, VV; Frade, JR
2009, JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 156, 3, F47-F53.

Behavior of (La,Sr)CoO3- and La2NiO4-based ceramic anodes in alkaline media: Compositional and microstructural factors

Poznyak, SK; Kharton, VV; Frade, JR; Yaremchenko, AA; Tsipis, EV; Yakovlev, SO; Marozau, IP
2008, JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 12, 1, 15-30.

Interpretation of impedance spectra based on local minima of imaginary Z vs frequency

Abrantes, JCC; Ferreira, AAL; Horovistiz, AL; Frade, JR
2008, ELECTROCHIMICA ACTA, 53, 28, 8222-8227.

Processing and oxygen permeability of asymmetric ferrite-based ceramic membranes

Kovalevsky, AV; Kharton, VV; Snijkers, FMM; Cooymans, JFC; Luyten, JJ; Frade, JR
2008, SOLID STATE IONICS, 179, 1-6, 61-65.

Effects of Yb : Ti ratio on transport properties of Yb2 +/- xTi2 +/- xO7 +/-delta

Horovistiz, AL; Abrantes, JCC; Fagg, DP; Frade, JR
2008, SOLID STATE IONICS, 179, 21-26, 1046-1049.

Mixed conductivity and stability of CaFe2O4-delta

Kharton, VV; Tsipis, EV; Kolotygin, VA; Avdeev, M; Viskup, AP; Waerenborgh, JC; Frade, JR
2008, JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 155, 3, P13-P20.

Interfacial effects in potentiometric oxygen sensors: The role of transport properties and thickness of solid electrolyte ceramics

Frade, JR; Kharton, VV; Shaula, AL; Marques, FMB
2008, SENSOR LETTERS, 6, 3, 370-380.

Low-temperature synthesis and characterization of apatite-type lanthanum silicates

Kharlamova, T; Pavlova, S; Sadykov, V; Lapina, O; Khabibulin, D; Krieger, T; Zaikovskii, V; Ishchenko, A; Salanov, A; Muzykantov, V; Mezentseva, N; Chaikina, M; Uvarov, N; Frade, J; Argirusis, C
2008, SOLID STATE IONICS, 179, 21-26, 1018-1023.

Al-doped apatite-type nanocrystalline lanthanum silicates prepared by mechanochemical synthesis: Phase, structural and microstructural study

Kharlamova, T; Pavlova, S; Sadykov, V; Chaikina, M; Krieger, T; Lapina, O; Khabibulin, D; Ishchenko, A; Zaikovskii, V; Argirusis, C; Frade, J
2008, EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, 6, 939-947.

Oxygen permeability, stability and electrochemical behavior of Pr2NiO4+delta-based materials

Kovalevsky, AV; Kharton, VV; Yaremchenko, AA; Pivak, YV; Tsipis, EV; Yakovlev, SO; Markov, AA; Naumovich, EN; Frade, JR
2007, JOURNAL OF ELECTROCERAMICS, 18, 3-4, 205-218.

Re-examination of bulk and grain boundary conductivities of Ce(1-x)Gd(x)O(2-delta) ceramics

Perez-Coll, D; Nunez, P; Ruiz-Morales, JC; Pena-Martinez, J; Frade, JR
2007, ELECTROCHIMICA ACTA, 52, 5, 2001-2008.

Electrochemical behavior of mixed-conducting oxide cathodes in contact with apatite-type La(10)Si(5)AlO(26.5) electrolyte

Tsipis, EV; Kharton, VV; Frade, JR
2007, ELECTROCHIMICA ACTA, 52, 13, 4428-4435.

Phase relationships and transport in Ti-, Ce- and Zr-substituted lanthanum silicate systems

Pivak, YV; Kharton, VV; Yaremchenko, AA; Yakovlev, SO; Kovalevsky, AV; Frade, JR; Marques, FMB
2007, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 27, 6, 2445-2454.

Combustion synthesis and characterisation of Ni-MO-YSZ (M = Mg, Ca, Al-2/3) cermet anodes for SOFCs

Chinarro, E; Figueiredo, FM; Mather, GC; Jurado, JR; Frade, JR
2007, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 27, 13-15, 4233-4236.

Stability and oxygen transport properties of Pr2NiO4+delta ceramics

Kovalevsky, AV; Kharton, VV; Yaremchenko, AA; Pivak, YV; Naumovich, EN; Frade, JR
2007, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 27, 13-15, 4269-4272.

Reducibility of Ce1-xGdxO2-delta in prospective working conditions

Perez-Coll, D; Marrero-Lopez, D; Ruiz-Morales, JC; Nunez, P; Abrantes, JCC; Frade, JR
2007, JOURNAL OF POWER SOURCES, 173, 1, 291-297.

Ionic and electronic transport in La(2)Ti(2)SiO(9)-based materials

Pivak, YV; Kharton, VV; Naumovich, EN; Frade, JR; Marques, FMB
2007, JOURNAL OF SOLID STATE CHEMISTRY, 180, 4, 1259-1271.

High oxygen permeability in fluorite-type Ce0.8Pr0.2O2-delta via the use of sintering aids

Fagg, DP; Shaula, AL; Kharton, VV; Frade, JR
2007, JOURNAL OF MEMBRANE SCIENCE, 299, 1-2, 1-7.

Mixed conductivity and electrochemical behavior of (La0.75Sr0.25)(0.95)Cr0.5Mn0.5O3-delta

Kharton, VV; Tsipis, EV; Marozau, IP; Viskup, AP; Frade, JR; Irvine, JTS
2007, SOLID STATE IONICS, 178, 1-2, 101-113.

Chemically induced expansion of La(2)NiO(4+delta)-based materials

Kharton, VV; Kovalevsky, AV; Avdeev, M; Tsipis, EV; Patrakeev, MV; Yaremchenko, AA; Naumovich, EN; Frade, JR
2007, CHEMISTRY OF MATERIALS, 19, 8, 2027-2033.

Effects of firing schedule on solubility limits and transport properties of ZrO2-TiO2-Y2O3 fluorites

Fagg, DP; Frade, JR; Mogensen, M; Irvine, JTS
2007, JOURNAL OF SOLID STATE CHEMISTRY, 180, 8, 2371-2376.

Effects of Fe-additions on sintering and transport properties of Yb2Ti2-yFeyO7-delta

Horovistiz, AL; Fagg, DP; Abrantes, JCC; Frade, JR
2007, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 27, 13-15, 4283-4286.

Mixed conductivity, thermal expansion and defect chemistry of A-site deficient LaNi(0.5)Ji(0.5)O(3-delta)

Yakovlev, S; Kharton, V; Yaremchenko, A; Kovalevsky, A; Naumovich, E; Frade, J
2007, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 27, 13-15, 4279-4282.

Applicability of emf measurements under external load resistance conditions for ion transport number determination

Frade, J; Kharton, VV; Yaremchenko, AA; Tsipis, EV
2006, JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 10, 2, 96-103.

Oxygen transport and thermomechanical properties of SrFe(Al)O3-delta-SrAl2O4 composites: microstructural effects

Kharton, VV; Kovalevsky, AV; Yaremchenko, AA; Snijkers, FMM; Cooymans, JFC; Luyten, JJ; Markov, AA; Frade, JR; Marques, FMB
2006, JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 10, 8, 663-673.

Processing of submicrometric CaTi0.8Fe0.2O3-delta ceramics by mechanical activation

Fuentes, RO; Chinarro, E; Figueiredo, FM; Soares, R; Marques, FMB; Frade, JR
2006, JOURNAL OF MATERIALS SCIENCE, 41, 22, 7393-7400.

Silica-scavenging effect in zirconia electrolytes: assessment of lanthanum silicate formation

Kovalevsky, AV; Marques, FMB; Kharton, VV; Maxim, F; Frade, JR
2006, IONICS, 12, 3, 179-184.

Transport numbers and oxygen permeability of SrCe(Y)O-3-based ceramics under oxidising conditions

Kharton, VV; Marozau, IP; Mather, GC; Naumovich, EN; Frade, JR
2006, ELECTROCHIMICA ACTA, 51, 28, 6389-6399.

Grain boundary conductivity of Ce(0.8)Ln(0.2)O(2-delta) ceramics (Ln = Y, La, Gd, Sm) with and without Co-doping

Perez-Coll, D; Marrero-Lopez, D; Nunez, P; Pinol, S; Frade, JR
2006, ELECTROCHIMICA ACTA, 51, 28, 6463-6469.

Redox behavior of acceptor-doped La(Al,Fe)O3-delta

Tsipis, EV; Kharton, VV; Waerenborgh, JC; Rojas, DP; Naumovich, EN; Frade, JR
2006, JOURNAL OF ALLOYS AND COMPOUNDS, 413, 1-2, 244-250.

Electronic conductivity, oxygen permeability and thermal expansion of Sr0.7Ce0.3Mn1-xAlxO3-delta

Marozau, IP; Kharton, VV; Viskup, AP; Frade, JR; Samakhval, VV
2006, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 26, 8, 1371-1378.

Oxygen transport in ferrite-based ceramic membranes: Effects of alumina sintering aid

Kharton, VV; Shaula, AL; Snijkers, FMM; Cooymans, JFC; Luyten, JJ; Marozau, IP; Viskup, AP; Marques, FMB; Frade, JR
2006, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 26, 16, 3695-3704.

Transport properties of sealants for high-temperature electrochemical applications: RO-BaO-SiO(2) (R = Mg, Zn) glass-ceramics

Pascual, MJ; Kharton, VV; Tsipis, E; Yaremchenko, AA; Lara, C; Duran, A; Frade, JR
2006, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 26, 15, 3315-3324.

Defect formation and transport in mixed-conducting La0.90Sr0.10Al0.85-xFexMg0.15O3-delta

Tsipis, EV; Waerenborgh, JC; Kharton, VV; Naumovich, EN; Frade, JR
2006, JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 67, 8, 1882-1887.

The defect chemistry of Ce(Pr, Zr)O2-delta

Fagg, DP; Frade, JR; Kharton, VV; Marozau, IP
2006, JOURNAL OF SOLID STATE CHEMISTRY, 179, 5, 1469-1477.

Oxygen permeability, thermal expansion and mixed conductivity of GdxCe0.8-xPr0.2O2-delta, x=0, 0.15, 0.2

Fagg, DP; Marozau, IP; Shaula, AL; Kharton, VV; Frade, JR
2006, JOURNAL OF SOLID STATE CHEMISTRY, 179, 11, 3347-3356.

Processing and characterization of La0.5Sr0.5FeO3-supported Sr1-xFe(Al)O-3-SrAl2O4 composite membranes

Kovalevskya, AV; Kharton, VV; Maxim, F; Shaula, AL; Frade, JR
2006, JOURNAL OF MEMBRANE SCIENCE, 278, 1-2, 162-172.

Oxygen permeability, electronic conductivity and stability of La0.3Sr0.7CoO3-based perovskites

Kharton, VV; Tsipis, EV; Yaremchenko, AA; Marozau, IP; Viskup, AP; Frade, JR; Naumovich, EN
2006, MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 134, 1, 80-88.

Defect formation and transport in La0.95Ni0.5Ti0.5O3-delta

Yakovlev, SO; Kharton, VV; Naumovich, EN; Zekonyte, J; Zaporojtchenko, V; Kovalevsky, AV; Yaremchenko, AA; Frade, JR
2006, SOLID STATE SCIENCES, 8, 11, 1302-1311.

Defect interactions in La0.3Sr0.7Fe(M ')O3-delta (M ' = Al, Ga) perovskites: Atomistic simulations and analysis of p(O-2)-T-delta diagrams

Naumovich, EN; Patrakeev, MV; Kharton, V; Islam, MS; Yaremchenko, AA; Frade, JR; Marques, FMB
2006, SOLID STATE IONICS, 177, 5-6, 457-470.

Mixed conductivity, stability and thermomechanical properties of Ni-doped La(Ga,Mg)O3-delta

Yaremchenko, AA; Kharton, VV; Naumovich, EN; Shestakov, DI; Chukharev, VF; Kovalevsky, AV; Shaula, AL; Patrakeev, MV; Frade, JR; Marques, FMB
2006, SOLID STATE IONICS, 177, 5-6, 549-558.

Transport properties and structural stability of tetragonal CeNbO(4+delta)

Tsipis, EV; Munnings, CN; Kharton, VV; Skinner, SJ; Frade, JR
2006, SOLID STATE IONICS, 177, 11-12, 1015-1020.

Ionic and electronic conductivity of Yb2+xTi2-xO7-x/2 materials

Abrantes, JCC; Levchenko, A; Shlyakhtina, AV; Shcherbakova, LG; Horovistiz, AL; Fagg, DP; Frade, JR
2006, SOLID STATE IONICS, 177, 19-25, 1785-1788.

Transport properties and electrochemical activity of YBa(Co,Fe)(4)O-7 cathodes

Tsipis, EV; Kharton, VV; Frade, JR
2006, SOLID STATE IONICS, 177, 19-25, 1823-1826.

Diffusion and conductivity properties of cerium niobate

Packer, RJ; Tsipis, EV; Munnings, CN; Kharton, VV; Skinner, SJ; Frade, JR
2006, SOLID STATE IONICS, 177, 19-25, 2059-2064.

Methane oxidation over SOFC anodes with nanocrystalline ceria-based phases

Kharton, VV; Yaremchenko, AA; Valente, AA; Frolova, EV; Ivanovskaya, MI; Frade, JR; Marques, FMB; Rocha, J
2006, SOLID STATE IONICS, 177, 19-25, 2179-2183.

Electroplating of iron films: Microstructural effects of alkaline baths

Poznyak, SK; Kharton, VV; Frade, JR; Ferreira, MGS
2006, ADVANCED MATERIALS FORUM III, PTS 1 AND 2, 514-516, 88-92.

Oxygen evolution on perovskite-type cobaltite anodes: an assessment of materials science-related aspects

Kovalevsky, AV; Sviridov, DV; Kharton, VV; Naumovich, EN; Frade, JR
2006, ADVANCED MATERIALS FORUM III, PTS 1 AND 2, 514-516, 377-381.

Transport properties and thermal expansion of SrCe(Y)O3-delta ceramics

Marozau, IP; Kharton, VV; Frade, JR; Marques, FMB
2006, ADVANCED MATERIALS FORUM III, PTS 1 AND 2, 514-516, 387-391.

Defect formation in La2Ni(M)O-4+delta (M=Co, Cu): Modelling and coulometric titration study

Naumovich, EN; Patrakeev, MV; Kharton, VV; Yaremchenko, AA; Tsipis, EV; Logvinovich, DI; Frade, JR; Marques, FMB
2006, ADVANCED MATERIALS FORUM III, PTS 1 AND 2, 514-516, 397-401.

Mixed conductivity of Ce- and Nb-substituted (La,Sr)FeO3-delta

Kharton, VV; Viskup, AP; Kovalevsky, AV; Shaula, AL; Frade, JR; Marques, FMB
2006, ADVANCED MATERIALS FORUM III, PTS 1 AND 2, 514-516, 402-406.

Isothermal crystallisation of a glass from the 3CaO.P2O5-SiO2-MgO-K2O system studied by impedance spectroscopy

Queiroz, CM; Fernandes, MHV; Frade, JR
2006, ADVANCED MATERIALS FORUM III, PTS 1 AND 2, 514-516, 1073-1077.

Non-isothermal crystallisation of SiO2-MgO-K2O-3CaO center dot P2O5 glass studies by impedance spectroscopy

Queiroz, CM; Fernandes, MHV; Frade, JR
2006, ADVANCED MATERIALS FORUM III, PTS 1 AND 2, 514-516, 1078-1082.

Electrocatalytic behavior of perovskite-related cobaltites and nickelates in alkaline MediA

Poznyak, SK; Kharton, VV; Frade, JR; Yaremchenko, AA; Tsipis, EV; Marozau, IP; Ferreira, MGS
2006, ADVANCED MATERIALS FORUM III, PTS 1 AND 2, 514-516, 1391-1395.

Cellulose-precursor synthesis of electrocatalytically active components of SOFCs and mixed-conducting membrane reactors

Tsipis, E; Bashmakov, IA; Kharton, VV; Naumovich, EN; Frade, JR
2005, Fuel Cell Technologies: State and Perspectives, 202, 223-229.
ISBN: 1-4020-3496-2

Glass-ceramic sealants for SOFC-based systems

Kharton, VV; Tsipis, EV; Carvalho, AP; Kovalevsky, AV; Naumovich, EN; Marques, FMB; Frade, JR; Shaula, AL
2005, Fuel Cell Technologies: State and Perspectives, 202, 231-238.
ISBN: 1-4020-3496-2

Transport and electrocatalytic properties of La0.3Sr0.7Co0.8Ga0.2O3-delta membranes

Kharton, VV; Tsipis, EV; Marozau, IP; Yaremchenko, AA; Valente, AA; Viskup, AP; Frade, JR; Naumovich, EN; Rocha, J
2005, JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 9, 1, 10-20.

High-temperature transport and electrochemical properties of YBaCo4O7+delta

Tsipis, EV; Kharton, VV; Frade, JR; Nunez, P
2005, JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 9, 8, 547-557.

Oxygen ionic transport in SrFe1-yAlyO3-delta and Sr1-xCaxFe0.5Al0.5O3-delta ceramics

Shaula, AL; Kharton, VV; Vyshatko, NP; Tsipis, EV; Patrakeev, MV; Marques, FMB; Frade, JR
2005, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 25, 4, 489-499.

Grain size effects on oxygen permeation in submicrometric CaTi0.8Fe0.2O3-delta ceramics obtained by mechanical activation

Shaula, AL; Fuentes, RO; Figueiredo, FM; Kharton, VV; Marques, FMB; Frade, JR
2005, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 25, 12, 2613-2616.

Mixed conducting components of solid oxide fuel cell anodes

Tsipis, EV; Kharton, VV; Frade, JR
2005, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 25, 12, 2623-2626.

Transport properties and thermal expansion of La2Mo2O9-based solid electrolytes

Marozau, IP; Shaula, AL; Kharton, VV; Vyshatko, NP; Viskup, AP; Frade, JR; Marques, FMB
2005, MATERIALS RESEARCH BULLETIN, 40, 2, 361-371.

Phase formation and iron oxidation states in SrFe(Al)O3-delta perovskites

Waerenborgh, JC; Rojas, DP; Shaula, AL; Mather, GC; Patrakeev, MV; Kharton, VV; Frade, JR
2005, MATERIALS LETTERS, 59, 13, 1644-1648.

Processing, stability and oxygen permeability of Sr(Fe, Al)O-3-based ceramic membranes

Kharton, VV; Shaula, AL; Snijkers, FMM; Cooymans, JFC; Luyten, JJ; Yaremchenko, AA; Valente, AA; Tsipis, EV; Frade, JR; Marques, FMB; Rocha, J
2005, JOURNAL OF MEMBRANE SCIENCE, 252, 1-2, 215-225.

Ion transport properties and Seebeck coefficient of Fe-doped La(Sr)Al(Mg)O(3-delta)

Tsipis, EV; Kharton, V; Vyshatko, N; Frade, JR; Marques, FMB
2005, SOLID STATE SCIENCES, 7, 3, 257-267.

Transport properties and thermal expansion of Ti-substituted La1-xSrxFeO3-delta (x=0.5-0.7)

Tsipis, EV; Patrakeev, MV; Kharton, V; Yaremchenko, AA; Mather, GC; Shaula, AL; Leonidov, IA; Kozhevnikov, VL; Frade, JR
2005, SOLID STATE SCIENCES, 7, 4, 355-365.

Methane oxidation over perovskite-related ferrites: Effects of oxygen nonstoichiometry

Kharton, VV; Patrakeev, MV; Waerenborgh, JC; Sobyanin, VA; Veniaminov, SA; Yaremchenko, AA; Gaczynski, P; Belyaev, VD; Semin, GL; Frade, JR
2005, SOLID STATE SCIENCES, 7, 11, 1344-1352.

Oxygen nonstoichiometry and electron-hole transport in La2Ni0.9Co0.1O4+delta

Patrakeev, MV; Naumovich, EN; Kharton, VV; Yaremchenko, AA; Tsipis, EV; Nunez, P; Frade, JR
2005, SOLID STATE IONICS, 176, 1-2, 179-188.

Methane oxidation over Fe-, Co-, Ni- and V-containing mixed conductors

Kharton, VV; Yaremchenko, AA; Valente, AA; Sobyanin, VA; Belyaev, VD; Semin, GL; Veniaminov, SA; Tsipis, EV; Shaula, AL; Frade, JR; Rocha, J
2005, SOLID STATE IONICS, 176, 7-8, 781-791.

Mixed conductivity, thermal expansion, and oxygen permeability of Ce(PrZr)O-2-(delta)

Fagg, DP; Kharton, VV; Shaula, A; Marozau, IP; Frade, JR
2005, SOLID STATE IONICS, 176, 19-22, 1723-1730.

Kinetics of phase transformations for constant heating rate occurring close to the thermodynamic transition

Frade, JR; Kharton, VV; Marrero-Lopez, D; Nunez, P; Abrantes, JCC
2005, THERMOCHIMICA ACTA, 435, 1, 85-91.

Oxygen permeability of transition metal-containing La(Sr,Pr)Ga(Mg)O3-delta ceramic membranes

Yaremchenko, AA; Shaula, AL; Kharton, VV; Kovalevsky, AV; Naumovich, EN; Frade, JR; Marques, FBM
2004, BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO, 43, 4, 769-774.

Restrictions to obtain NASICON by a ceramic route

Fuentes, RO; Lamas, DG; Fernandez De Rapp, ME; Figueredo, FM; Frade, JR; Marques, FMB; Franco, JI
2004, BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO, 43, 4, 775-779.

Mixed conducting materials for partial oxidation of hydrocarbons

Frade, JR; Kharton, VV; Yaremchenko, AA; Tsipis, EV; Shaula, AL; Naumovich, EN; Kovalevsky, AV; Marques, FMB
2004, BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO, 43, 3, 640-643.

Crystallisation of bulk silicate-phosphate glass samples studied by impedance spectroscopy

Queiroz, CM; Figueiredo, FM; Fernandes, MH; Frade, JR
2004, PHYSICS AND CHEMISTRY OF GLASSES, 45, 2, 71-74.

Oxygen permeability and thermal expansion of ferrite-based mixed conducting ceramics

Kharton, VV; Yaremchenko, AA; Shaula, AL; Viskup, AP; Marques, FMB; Frade, JR; Naumovich, EN; Casanova, JR; Marozau, IP
2004, DEFECTS AND DIFFUSION IN CERAMICS - AN ANNUAL RETROSPECTIVE VI, 226-228, 141-159.

Stability and transport properties of La2Mo2O9

Marrero-Lopez, D; Ruiz-Morales, JC; Perez-Coll, D; Nunez, P; Abrantes, JCC; Frade, JR
2004, JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 8, 9, 638-643.

Effects of sintering additives on the mixed transport properties of ceria-based materials under reducing conditions

Perez-Coll, D; Nunez, P; Marrero-Lopez, D; Abrantes, JCC; Frade, JR
2004, JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 8, 9, 644-649.

Cellulose-precursor synthesis of nanocrystalline Ce0.8Gd0.2O2-delta for SOFC anodes

Tsipis, EV; Kharton, VV; Bashmakov, IA; Naumovich, EN; Frade, JR
2004, JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 8, 9, 674-680.

Transport in ceria electrolytes modified with sintering aids: effects on oxygen reduction kinetics

Fagg, DP; Kharton, VV; Frade, JR
2004, JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 8, 9, 618-625.

Properties of CaTi1-xFexO3-delta ceramic membranes

Figueiredo, FM; Soares, MR; Kharton, VV; Naumovich, EN; Waerenborgh, JC; Frade, JR
2004, JOURNAL OF ELECTROCERAMICS, 13, 1-3, 627-636.

Characterization of mixed-conducting La2Ni0.9Co0.1O4+delta membranes for dry methane oxidation

Kharton, VV; Yaremchenko, AA; Tsipis, EV; Valente, AA; Patrakeev, MV; Shaula, AL; Frade, JR; Rocha, J
2004, APPLIED CATALYSIS A-GENERAL, 261, 1, 25-35.

Electrochemical behaviour of Ni-cermet anodes containing a proton-conducting ceramic phase on YSZ substrate

Mather, GC; Figueiredo, FM; Jurado, JR; Frade, JR
2004, ELECTROCHIMICA ACTA, 49, 16, 2601-2612.

Ionic and electronic transport in stabilized beta-La2MO2O9 electrolytes

Marozau, IP; Marrero-Lopez, D; Shaula, AL; Kharton, VV; Tsipis, EV; Nunez, P; Frade, JR
2004, ELECTROCHIMICA ACTA, 49, 21, 3517-3524.

Simulated effects of transient nucleation on the crystallization of glass samples

Frade, JR; Queiroz, CM; Fernandes, MH
2004, JOURNAL OF NON-CRYSTALLINE SOLIDS, 333, 3, 263-270.

Methane to syngas conversion - Part I. Equilibrium conditions and stability requirements of membrane materials

Frade, JR; Kharton, VV; Yaremchenko, A; Naumovich, E
2004, JOURNAL OF POWER SOURCES, 130, 1-2, 77-84.

Synthesis and characterization of La2MO2O9 obtained from freeze-dried precursors

Marrero-Lopez, D; Ruiz-Morales, JC; Nunez, P; Abrantes, JCC; Frade, JR
2004, JOURNAL OF SOLID STATE CHEMISTRY, 177, 7, 2378-2386.

Microdomain texture and microstructures of Fe4+-containing CaTi0.4Fe0.6O3-delta

Canales-Vazquez, J; Figueiredo, FM; Waerenborgh, JC; Zhou, WZ; Frade, JR; Irvine, JTS
2004, JOURNAL OF SOLID STATE CHEMISTRY, 177, 9, 3105-3113.

Surface enhanced oxygen permeation in CaTi1-xFexO3-delta ceramic membranes

Figueiredo, FM; Kharton, VV; Viskup, AP; Frade, JR
2004, JOURNAL OF MEMBRANE SCIENCE, 236, 1, 73-80.

Surface-limited oxygen transport and electrode properties of La(2)Ni(0.8)Cu(0.2)O(4+delta)

Kharton, VV; Tsipis, EV; Yaremchenko, AA; Frade, JR
2004, SOLID STATE IONICS, 166, 3-4, 327-337.

Interfacial effects in electrochemical cells for oxygen ionic conduction measurements - III. Transference numbers vs. grain-boundary resistivity

Kharton, VV; Marques, FMB; Tsipis, EV; Viskup, AP; Vyshatko, NP; Patrakeev, MV; Naumovich, EN; Frade, JR
2004, SOLID STATE IONICS, 168, 1-2, 137-151.

Transport properties and stability of Ni-containing mixed conductors with perovskite- and K2NiF4-type structure

Kharton, VV; Yaremchenko, AA; Shaula, AL; Patrakeev, MV; Naumovich, EN; Loginovich, DI; Frade, JR; Marques, FMB
2004, JOURNAL OF SOLID STATE CHEMISTRY, 177, 1, 26-37.

Influence of microstructure on the electrical properties of iron-substituted calcium titanate ceramics

Figueiredo, FM; Kharton, VV; Waerenborgh, JC; Viskup, AP; Naumovich, EN; Frade, JR
2004, JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 87, 12, 2252-2261.

Network connectivity and bio-mineralizaiton of 0.45SiO(2)-(0.45-x)MgO-xK(2)O-0.1(3CAO center dot P2O5) glasses

Queiroz, CM; Agathopoulos, S; Frade, JR; Fernandes, MHV
2004, ADVANCED MATERIALS FORUM II, 455-456, 383-387.
ISBN: 0-87849-941-5

SiO2-MgO-3CaO center dot P2O5-K2O glasses and glass-ceramics: Effect of crystallisation on the adhesion of SBF apatite layers

Queiroz, CM; Frade, JR; Fernandes, MHV
2004, BIOCERAMICS, VOL 16, 254-2, 155-158.
ISBN: 0-87849-932-6

Oxygen transport and electrochemical activity of La2NiO4-based cathode materials

Kharton, VV; Yaremchenko, AA; Tsipis, EV; Frade, JR
2003, SOLID OXIDE FUEL CELLS VIII (SOFC VIII), 2003, 7, 561-570.
ISBN: 1-56677-377-6

Cu-Ce0.8Gd0.2O2-delta materials as SOFC electrolyte and anode

Fagg, DP; Mather, GC; Frade, JR
2003, IONICS, 9, 3-4, 214-219.

Mixed conductivity of zircon-type Ce(1-x)A(x)VO(4 +/-delta) (A = Ca, Sr)

Tsipis, EV; Kharton, VV; Vyshatko, NP; Shaula, AL; Patrakeev, MV; Frade, JR
2003, IONICS, 9, 3-4, 231-237.

Mixed conductivity of gadolinium titanate-based pyrochlore ceramics: The grain boundary effects

Kharton, VV; Marques, FMB; Tsipis, EV; Viskup, AP; Patrakeev, MV; Harkavy, AV; Samigullina, R; Frade, JR
2003, IONICS, 9, 1-2, 122-126.

On the use of multichannel data acquisition of impedance spectra

Abrantes, JCC; Perez-Coll, D; Nunez, P; Frade, JR
2003, IONICS, 9, 5-6, 370-374.

Oxygen ionic and electronic transport in Gd2-xCaxTi2O7-delta pyrochlores

Kharton, VV; Tsipis, EV; Yaremchenko, AA; Vyshatko, NP; Shaula, AL; Naumovich, EN; Frade, JR
2003, JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 7, 8, 468-476.

The effect of cobalt oxide sintering aid on electronic transport in Ce0.80Gd0.20O2-delta electrolyte

Fagg, DP; Abrantes, JCC; Perez-Coll, D; Nunez, P; Kharton, VV; Frade, JR
2003, ELECTROCHIMICA ACTA, 48, 8, 1023-1029.

Electronic transport in Ce0.8Sm0.2O1.9-delta ceramics under reducing conditions

Abrantes, JCC; Perez-Coll, D; Nunez, P; Frade, JR
2003, ELECTROCHIMICA ACTA, 48, 19, 2761-2766.

Stability and oxygen ionic conductivity of zircon-type Ce(1-x)A(x)VO(4+delta) (A = Ca, Sr)

Tsipis, EV; Kharton, VV; Vyshatko, NP; Shaula, AL; Frade, JR
2003, JOURNAL OF SOLID STATE CHEMISTRY, 176, 1, 47-56.

Oxygen permeability of LaGa0.65Ni0.20Mg0.15O3-delta ceramics: effect of synthesis method

Shaula, AL; Viskup, AP; Kharton, VV; Logvinovich, DI; Naumovich, EN; Frade, JR; Marques, FMB
2003, MATERIALS RESEARCH BULLETIN, 38, 2, 353-362.

Synthesis and characterisation of Ni-SrCe0.9Yb0.1O3-delta cermet anodes for protonic ceramic fuel cells

Mather, GC; Figueiredo, FM; Fagg, DP; Norby, T; Jurado, JR; Frade, JR
2003, SOLID STATE IONICS, 158, 3-4, 333-342.

Bulk and grain boundary conductivity of Ca0.97Ti1-xFexO3-delta materials

Chinarro, E; Jurado, JR; Figueiredo, FM; Frade, JR
2003, SOLID STATE IONICS, 160, 1-2, 161-168.

Synthesis and characterisation of cermet anodes for SOFCs with a proton-conducting ceramic phase

Mather, GC; Figueiredo, FM; Jurado, JR; Frade, JR
2003, SOLID STATE IONICS, 162, 115-120.

Redox behaviour of Sr4Fe6O13 +/-delta by Mossbauer spectroscopy and neutron diffraction

Waerenborgh, JC; Avdeev, M; Patrakeev, MV; Kharton, VV; Frade, JR
2003, MATERIALS LETTERS, 57, 21, 3245-3250.

Oxygen-ionic conductivity of perovskite-type La1-xSrxGa1-yMgyM0.20O3-delta (M = Fe, Co, Ni)

Yaremchenko, AA; Shaula, AL; Logvinovich, DI; Kharton, VV; Kovalevsky, A; Naumovich, EN; Frade, JR; Marques, FMB
2003, MATERIALS CHEMISTRY AND PHYSICS, 82, 3, 684-690.

Oxygen permeability of LaGaO3-based ceramic membranes

Shaula, AL; Yaremchenko, AA; Kharton, VV; Logvinovich, DI; Naumovich, EN; Kovalevsky, AV; Frade, JR; Marques, FMB
2003, JOURNAL OF MEMBRANE SCIENCE, 221, 1-2, 69-77.

Oxidation of dry methane on the surface of oxygen ion-conducting membranes

Yaremchenko, AA; Valente, AA; Kharton, VV; Tsipis, EV; Frade, JR; Naumovich, EN; Rocha, J; Marques, FMB
2003, CATALYSIS LETTERS, 91, 3-4, 169-174.

Mechanically-activated synthesis and mixed conductivity of TbMO4-delta (M = Zr, Hf) ceramics

Tsipis, EV; Shlyakhtina, AV; Shcherbakova, LG; Kolbanev, IV; Kharton, VV; Vyshatko, NP; Frade, JR
2003, JOURNAL OF ELECTROCERAMICS, 10, 3, 153-164.

p-type electronic conductivity, oxygen permeability and stability of La2Ni0.9Co0.1O4+delta

Yaremchenko, AA; Kharton, VV; Patrakeev, MV; Frade, JR
2003, JOURNAL OF MATERIALS CHEMISTRY, 13, 5, 1136-1144.

Mixed conductivity and stability of A-site-deficient Sr(Fe,Ti)O3-delta perovskites

Kharton, VV; Kovalevsky, AV; Tsipis, EV; Viskup, AP; Naumovich, EN; Jurado, JR; Frade, JR
2002, JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 7, 1, 30-36.

Ni1-xCox/YSZ cermet anodes for solid oxide fuel cells

Ringuede, A; Bronine, D; Frade, JR
2002, ELECTROCHIMICA ACTA, 48, 4, 437-442.

P-type electronic transport in Ce0.8Gd0.2O2-delta: The effect of transition metal oxide sintering aids

Fagg, DP; Kharton, VV; Frade, JR
2002, JOURNAL OF ELECTROCERAMICS, 9, 3, 199-207.

Ionic and p-type electronic transport in zircon-type Ce(1-x)A(x)VO(4 +/-delta) (A = Ca, Sr)

Tsipis, EV; Patrakeev, MV; Kharton, VV; Vyshatko, NP; Frade, JR
2002, JOURNAL OF MATERIALS CHEMISTRY, 12, 12, 3738-3745.

Reducibility of ceria-based materials exposed to fuels and under fuel/air gradients

Advances in Ceramics - Synthesis and Characterization, Processing and Specific Applications
Pérez-Coll D, Nuñez P, Frade JR
2011, Rijeka, InTech.

Condutores Iónicos

In Fortes MA, Ferreira PJ (Eds.), Materiais Dois Mil
Figueiredo FM, Marques FMB, Frade JR
2003, 353-361, Ist Press.

Sensores de Oxigénio

In Fortes A, Ferreira P (Eds.), Materiais Dois Mil
Marques FMB, Frade JR, Labrincha JA
2003, Lisbon, Ist Press.
ISBN: 9789728469238

Sensores Químicos

In Fortes MA, Ferreira PJ (Eds.), Materiais Dois Mil
Marques FMB, Labrincha JA, Frade JR
2003, 491-498, Ist Press.
ISBN: 9789728469238

Jorge Ribeiro Frade

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