Chapter 40. Modeling of Heat/Mass Transport and Electrochemistry of a Solid Oxide Fuel Cell

  1. Narottam P. Bansal,
  2. Andrew Wereszczak and
  3. Edgar Lara-Curzio
  1. Yan Ji,
  2. J. N. Chung and
  3. Kun Yuan

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291337.ch40

Advances in Solid Oxide Fuel Cells II: Ceramic Engineering and Science Proceedings, Volume 27, Issue 4

Advances in Solid Oxide Fuel Cells II: Ceramic Engineering and Science Proceedings, Volume 27, Issue 4

How to Cite

Ji, Y., Chung, J. N. and Yuan, K. (2006) Modeling of Heat/Mass Transport and Electrochemistry of a Solid Oxide Fuel Cell, in Advances in Solid Oxide Fuel Cells II: Ceramic Engineering and Science Proceedings, Volume 27, Issue 4 (eds N. P. Bansal, A. Wereszczak and E. Lara-Curzio), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291337.ch40

Author Information

  1. Department of Mechanical and Aerospace Engineering. University of Florida, FL 32611-6300, USA, Tel.: 352-3929607

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2006

ISBN Information

Print ISBN: 9780470080542

Online ISBN: 9780470291337

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Keywords:

  • electrolyte;
  • microstructure;
  • parameters;
  • geometry;
  • cathode

Summary

A three-dimensional thermo-fluid-electrochemical model is developed to simulate the heat/mass transport process in a solid oxide fuel cell. A network circuit is applied to simulate the electrical potential, ohmic losses and activation polarization. Governing equations of mass, momentum and energy conservation are simultaneously solved. A parametric study examines the effects of channel dimensions, rib width and electrolyte thickness on the temperature, species concentration, local current density and power density. Results demonstrate that decreasing the height of flow channels can lower the average solid temperature and improve cell efficiency. However, this improvement is limited for the smallest channel. The cell with a thicker rib width and a thinner electrolyte layer has higher efficiency and lower average temperature. Numerical simulation will be expected to help optimize the design of a solid oxide fuel cell.