Monolithic fuel cell having a multilayer interconnect

Details Monolithic fuel cell having a multilayer interconnect Monolithic fuel cell having a multilayer interconnect

1993-06-04

1994-08-30

Maples, John S.

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 30, 429158, 429160, H01M 810

Patent

active

053427050

ABSTRACT:
A fuel cell comprises an anode, a cathode, a solid electrolyte disposed between the anode and the cathode, and interconnect means for providing an electrical connection located adjacent to either the cathode or the anode but not adjacent to the solid electrolyte. The interconnect means includes an interconnect layer having a composition of a mixture of an electrical conductor and a ceramic matrix material that is sinterable in an oxidizing atmosphere at a temperature of less than about 1500.degree. C. The interconnect means includes, a first buffer layer having a region with a composition that is intermediate between that of the anode and that of the interconnect layer, a second buffer layer having a region with a composition that is intermediate between that of the cathode and that of the interconnect layer, and the interconnect layer disposed between the first buffer layer and the second buffer layer.

REFERENCES:
patent: 4490444 (1984-12-01), Isenberg
patent: 4631238 (1986-12-01), Ruka
patent: 4816036 (1989-03-01), Kotchick
patent: 4913982 (1990-04-01), Kotchick et al.
patent: 5063122 (1991-11-01), Rohr
patent: 5143801 (1992-09-01), Bates

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