Solid oxide fuel electrodes and process for producing the same

Details Solid oxide fuel electrodes and process for producing the same Solid oxide fuel electrodes and process for producing the same

1992-03-26

1993-12-14

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 38, 427115, H01M 812

Patent

active

052701298

ABSTRACT:
A solid oxide fuel cell comprising a separator plate made of a material having stability against oxidation and reduction and electronic conductivity, an air electrode spacer made of a material having oxidation resistance and electronic conductivity, a flat plate-shaped solid oxide fuel cell element, a fuel electrode spacer, and another separator plate made of a material having oxidation resistance, reduction resistance and electronic conductivity, and another separator plate. The separator plate, the air electrode spacer, the solid oxide fuel cell element, the fuel electrode spacer and another separator plate are successively laminated in this order. The solid oxide fuel cell element including an ion-conductive ceramic plate, and an air electrode and a fuel electrode formed on opposite surfaces of said ceramic plate, respectively. An oxidizing gas chamber is defined by the separator plate, the air electrode spacer and the element, and a fuel gas chamber is defined by the element, the fuel electrode spacer, and another separator plate. A process for producing such a solid oxide fuel cell comprises the steps of forming the ion-conductive ceramic plate by sintering, forming the air electrode and a fuel electrode on opposite surfaces of the ceramic plate, respectively, and successively laminating the separator plate, the air electrode spacer, the solid oxide fuel cell element, the fuel electrode spacer and another separator plate in this order.

REFERENCES:
patent: 4476197 (1984-10-01), Herceg
patent: 4816036 (1989-03-01), Kotchik
patent: 4883497 (1989-11-01), Claar et al.
patent: 4988582 (1991-01-01), Dyer

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