Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Patent
1987-03-19
1988-08-02
Hearn, Brian E.
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
429 30, 429 32, 429 38, H01M 810, H01M 214
Patent
active
047613491
ABSTRACT:
A solid oxide fuel cell in which fuel and oxidant gases undergo an electrochemical reaction to produce an electrical output includes a monolithic core comprised of a corrugated conductive sheet disposed between upper and lower generally flat sheets. The corrugated sheet includes a plurality of spaced, parallel, elongated slots which form a series of closed, linear, first upper and second lower gas flow channels with the upper and lower sheets within which a fuel gas and an oxidant gas respectively flow. Facing ends of the fuel cell are generally V-shaped and provide for fuel and oxidant gas inlet and outlet flow, respectively, and include inlet and outlet gas flow channels which are continuous with the aforementioned upper fuel gas and lower oxidant gas flow channels. The upper and lower flat sheets and the intermediate corrugated sheet are preferably comprised of ceramic materials and are securely coupled together such as by assembly in the green state and sintering together during firing at high temperatures. A potential difference across the fuel cell, or across a stacked array of similar fuel cells, is generated when an oxidant gas such as air and a fuel such as hydrogen gas is directed through the fuel cell at high temperatures, e.g., between 700.degree. C. and 1100.degree. C.
REFERENCES:
patent: 4276355 (1981-06-01), Kothmann et al.
patent: 4476196 (1984-10-01), Poeppel et al.
patent: 4476197 (1984-10-01), Herceg
patent: 4476198 (1984-10-01), Ackerman et al.
patent: 4510212 (1985-04-01), Fraioli
McPheeters Charles C.
Mrazek Franklin C.
Hearn Brian E.
Kalafut Stephen J.
University of Chicago
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