Characterization of fuel cell electrode processes by AC impedance
β Scribed by C. Y. Yuh; J. R. Selman
- Publisher
- American Institute of Chemical Engineers
- Year
- 1988
- Tongue
- English
- Weight
- 839 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0001-1541
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π SIMILAR VOLUMES
Ahatract-To optimize the performance of porous cathodes on Molten-Carbonate Fuel Cells it is important to know the relative contributions of all polarization processes. In this paper the technique of ac Impedance is applied to study the phenomena of the cathodes which are made of NiO or LiCoO,. Both
In applying ac impedance to fuel cells and their porous (gas diffusion) electrodes the emphasis lies on different fuel cell components, and their properties, according to the fuel cell type . The focus has been directed at the electrode/electrolyte interface in MCFC and PAFC, whereas in SOFC and PEM
impedance frequency (Hz) Warburg coefficient at equilibrium open circuit voltage (Q S-O.') Warburg coefficient with superimposed DC polarization (C4 s-'.~) Warburg coefficient of Nernst impedance 0 (Rs-0.5