Measurement of oxygen ionic transport in mixed conductors - Oxygen permeability, faradaic efficiency, and e.m.f methods

abstract

The electrochemical techniques for determination of oxygen ionic transport parameters, including the measurements of oxygen permeability, e.m.f. and faradaic efficiency, are briefly reviewed. The interfacial effects, such as electrode polarization, may lead to underestimating of the oxygen ion transference numbers or partial ionic conductivity. Possible modifications of the measurement methods, aimed to exclude influence of interfacial processes, are discussed.

keywords

OXIDE FUEL-CELLS; ELECTRICAL-CONDUCTIVITY; CERAMIC MEMBRANES; SURFACE EXCHANGE; SEPARATION; ELECTROLYTES; COEFFICIENTS; PEROVSKITES; PROSPECTS; CR

subject category

Energy & Fuels

authors

Naumovich, E; Kharton, V; Marques, FMB

our authors

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