Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Patent
1997-01-10
1999-08-03
Kalafut, Stephen
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
429 45, H01M 486
Patent
active
059323680
ABSTRACT:
The high temperature fuel cell with a thin film electrolyte has an electrochemically active element which is executed as a planar multi-layer structure. At least the electrolyte and cathode layers are deposited on a porous, gas-permeable carrier structure, by means of a thin film technique. The carrier structure is a sintered body of metal ceramic material which comprises a highly porous base layer as well as a fine pored cover layer of anode material placed on the base layer. The pores of the base layer are open with respect to one another and have an average diameter of the order of magnitude of at least about 300 .mu.m. The pores of the cover layer have diameters which are not substantially greater than 1 to 3 .mu.m. The coefficient of thermal expansion of the carrier structure is substantially the same as that of the solid electrolyte.
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Patent Abstracts of Japan, vol. 017, No. 375 (E-1397), Jul. 14, 1993 & JP-A-05 062691 (Murata Mfg. Co. Ltd.), Mar. 12, 1993, Abstract.
Patent Abstracts of Japan, vol. 013, No. 099 (E-724), Mar. 8, 1989 & JP-A-63 274062 (Fujkura Ltd.), Nov. 11, 1988, Abstract.
Dokiya, M., et al. "Fabrication of a Planar Solid Oxide Fuel Cell", Proceedings of the Intersociety Energy Conversion Engineering Conference (IECEC);, Washington, Aug. 6, 1989, vol. 3, pp. 1547-1551.
Kawada, Tatsuya, et al., "Fabrication of a Planar Solid Fuel Cell by Tape-Casting and Co-Firing Method", Journal of the Ceramic Society of Japan, International Ed., vol. 100, No. 6, Jun. 1, 1992, pp. 838-841.
Batawi Emad
Honegger Kaspar
Kalafut Stephen
Sulzer Innotec AG
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