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Power Generation Properties of a Micro Tubular SOFC Bundle Under Pressurized Conditions

[+] Author Affiliations
S. Hashimoto, Y. Liu, K. Asano, M. Mori

Central Research Institute of Electric Power Industry, Kanagawa, Japan

Y. Funahashi

Fine Ceramics Research Association, Nagoya, Japan

Y. Fujishiro

Advanced Industrial Science and Technology, Japan

Paper No. FuelCell2008-65125, pp. 211-214; 4 pages
doi:10.1115/FuelCell2008-65125
From:
  • ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology
  • ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology
  • Denver, Colorado, USA, June 16–18, 2008
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4318-1 | eISBN: 0-7918-3822-6
  • Copyright © 2008 by ASME

abstract

A micro tubular solid oxide fuel cell (SOFC) bundle was developed based on new concept. The anode-supported micro tubular SOFCs with the cell configuration, La0.6 Sr0.4 Co0.2 Fe0.8 O3−δ (LSCF) – Ce0.9 Gd0.1 O2−δ (CGO) cathode / CGO electrolyte / Ni – CGO anode were fabricated and were bundled by a porous LSCF current collecting cube 1 cm on a side. The power generation test of the fabricated SOFC bundle was carried out under pressurized conditions. Using wet 30%H2 / N2 mixture gas and air, the cubic power density of the bundle at 500°C was 0.47 Wcm−3 at 0.4Acm−2 , atmospheric pressure (0.1MPa). With increasing operating pressure, the performance has been improved, and the cubic power density finally reached to 0.66 Wcm−3 at 0.6MPa. Pressurization effect for the power improvement was brought about by the open circuit voltage enhancement and reduction of the polarization resistance.

Copyright © 2008 by ASME

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