Journal
FRONTIERS IN ENERGY RESEARCH
Volume 10, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fenrg.2022.867783
Keywords
conductivity; solid oxide cell; transference number; ionic; electronic; electrode; electrolyte; interconnect
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This paper proposes test protocols for characterizing the fundamental electrical properties of solid oxide cell (SOC) materials, including conductivity measurements and determination of transference numbers.
To standardize materials and component characterization for next generation hydrogen production and energy generation solid oxide cell (SOC) technologies, test protocols are being established to facilitate comparison across the numerous laboratories and research institutions where SOC development for application in solid oxide fuel cells (SOFCs) and solid oxide electrolyzes cells (SOEC) is conducted. This paper proposes guiding protocols for fundamental electrical properties characterization of SOC materials, including temperature- and oxygen partial pressure (pO(2))-dependent conductivity measurements, and use of the electromotive force for determining the transference numbers, or contributions of each charge carrier (i.e., ions and electrons), to the total conductivity. The protocol for Archimedes density measurements is also provided as an integral technique to both of these methods.
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