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A Modular Approach to Fuel Cell Modeling: Analysis of a SOFC Cathode

[+] Author Affiliations
Ismail B. Celik, Suryanarayana R. Pakalapati

West Virginia University, Morgantown, WV

Randall S. Gemmen

U.S. Department of Energy National Energy Technology Laboratory (NETL), Morgantown, WV

Paper No. IMECE2002-33181, pp. 155-163; 9 pages
doi:10.1115/IMECE2002-33181
From:
  • ASME 2002 International Mechanical Engineering Congress and Exposition
  • Advanced Energy Systems
  • New Orleans, Louisiana, USA, November 17–22, 2002
  • Conference Sponsors: Advanced Energy Systems Division
  • ISBN: 0-7918-3626-6 | eISBN: 0-7918-1691-5, 0-7918-1692-3, 0-7918-1693-1
  • Copyright © 2002 by ASME

abstract

A modular modeling strategy is outlined for fuel cells. As a stepping stone towards this modeling paradigm, the cathode-oxidizer assembly of a typical solid oxide fuel cell (SOFC) has been modeled. Various cases were simulated, and the spatial distributions of electric-potential, current, temperature and oxygen concentration have been calculated. An assessment of the results showed some surprising consequences. Detailed resolution of the current density distribution within the cathode has revealed highly non-uniform electrical field thin cathodes. This may have significant consequences concerning distribution of thermal stresses and structural integrity of the fuel cell.

Copyright © 2002 by ASME

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