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Optimization of Gas Delivery and Current Collecting System in Fuel Cells

[+] Author Affiliations
S. P. Chen, P. W. Li, M. K. Chyu

University of Pittsburgh, Pittsburgh, PA

Paper No. FUELCELL2006-97063, pp. 127-132; 6 pages
doi:10.1115/FUELCELL2006-97063
From:
  • ASME 2006 4th International Conference on Fuel Cell Science, Engineering and Technology
  • ASME 2006 Fourth International Conference on Fuel Cell Science, Engineering and Technology, Parts A and B
  • Irvine, California, USA, June 19–21, 2006
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4247-9 | eISBN: 0-7918-3780-7
  • Copyright © 2006 by ASME

abstract

The over-potentials in a fuel cell due to ohmic losses and concentration polarization can be reduced if the gas delivery field and the current collection system are well designed. To obtain such a substantial understanding for designing the gas delivery and current collection system, this study proposed a model to theoretically analyze the current collection process, and finally a method and tool of optimization for scales of gas channels and current collection ribs is presented. The analysis found that small current collectors and collection area is advantageous for getting high power density in both PEMFCs and SOFCs.

Copyright © 2006 by ASME

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