A Finite Length Cylinder Model for Mixed Oxide-Ion and Electron Conducting Cathodes Suited for Intermediate-Temperature Solid Oxide Fuel Cells
- Univ. of South Carolina, Columbia, SC (United States)
- Univ. of South Carolina, Columbia, SC (United States); Yangtze Univ., Jingzhou, Hubei (China). Applied Physics and Information Technology Research Center
- Univ. of South Carolina, Columbia, SC (United States). Dept. of Chemical Engineering
A physics-based model is presented to simulate the electrochemical behavior of mixed ion and electron conducting (MIEC) cathodes for intermediate-temperature solid oxide fuel cells. Analytic solutions for both transient and impedance models based on a finite length cylinder are derived. These solutions are compared to their infinite length counterparts. The impedance solution is also compared to experimental electrochemical impedance spectroscopy data obtained from both a traditional well-established La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) cathode and a new SrCo0.9Nb0.1O3-δ (SCN) porous cathode. Lastly, the impedance simulations agree well with the experimental values, demonstrating that the new models can be used to extract electro-kinetic parameters of MIEC SOFC cathodes.
- Research Organization:
- Univ. of South Carolina, Columbia, SC (United States)
- Sponsoring Organization:
- USDOE Advanced Research Projects Agency - Energy (ARPA-E)
- Grant/Contract Number:
- AR0000492
- OSTI ID:
- 1437586
- Journal Information:
- Journal of the Electrochemical Society, Vol. 163, Issue 6; ISSN 0013-4651
- Publisher:
- The Electrochemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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