Solid oxide electrolyte fuel cell having dimpled surfaces of a p

Details Solid oxide electrolyte fuel cell having dimpled surfaces of a p Solid oxide electrolyte fuel cell having dimpled surfaces of a p

1995-02-17

1996-05-21

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 32, 429 33, H01M 810, H01M 812

Patent

active

055188290

ABSTRACT:
The invention relates to a solid oxide electrolyte fuel cell (SOFC) which can be used as a cell for water electrolysis, CO.sub.2 electrolysis and other electrolyses, as well as for power generation. In a SOFC in which both surfaces of a power generation film comprising three layers of a fuel electrode, a solid electrolyte, and an oxygen electrode are formed with a number of dimples, the thickness of a yttria-stabilized zirconia film that constitutes the solid electrolyte is 5 to 100 .mu.m, and the thickness of an oxygen electrode material that constitutes the oxygen electrode which is provided on one side of the yttria-stabilized zirconia film is 200 to 2,000 .mu.m. As a result, the power generation performance can be greatly improved and a sufficiently strong oxygen electrode material prevents a thin yttria-stabilized zirconia film from being damaged in manual operations.

REFERENCES:
patent: 5169731 (1992-12-01), Yoshimura et al.
patent: 5213910 (1993-05-01), Yamada
Japanese Laid-Open Utility Model Application No. 4-8259 Jan. 24, 1992.
Patent Abstracts of Japan, vol. 15, No. 40 (E-102), 30 Jan. 1991; JPA02276166; 13 Nov. 1990; abstract.
Patent Abstracts of Japan, vol. 016, No. 255 (E-1214), 10 Jun. 1992; JPA04056075; 24 Feb. 1992; abstract.

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