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Quantitative Evaluation of Transport Properties of SOFC Porous Anode and Their Effect on the Power Generation Performance

[+] Author Affiliations
Masashi Kishimoto, Hiroshi Iwai, Motohiro Saito, Hideo Yoshida

Kyoto University, Kyoto, Japan

Paper No. IHTC14-22495, pp. 37-46; 10 pages
doi:10.1115/IHTC14-22495
From:
  • 2010 14th International Heat Transfer Conference
  • 2010 14th International Heat Transfer Conference, Volume 5
  • Washington, DC, USA, August 8–13, 2010
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-4940-8 | eISBN: 978-0-7918-3879-2
  • Copyright © 2010 by ASME

abstract

The three-dimensional microstructure of a solid oxide fuel cell (SOFC) anode is directly observed using a focused ion beam and scanning electron microscope (FIB-SEM) technique. Microstructural parameters, which are closely related to transport phenomena in porous materials, are quantitatively evaluated by a random-walk-based diffusion simulation. Numerical simulation of the SOFC anode with the obtained microstructural parameters is also performed, and the result is in good agreement with the experimental counterparts. Combined with a sensitivity analysis for the SOFC performance, the relationships between the microstructural parameters and the power generation performance are discussed and guidelines for optimizing the anode microstructure are proposed.

Copyright © 2010 by ASME

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