Edge seals for molten carbonate fuel cell stacks

Details Edge seals for molten carbonate fuel cell stacks Edge seals for molten carbonate fuel cell stacks

1994-03-22

1995-12-26

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

427115, 501127, H01M 802

Patent

active

054786630

ABSTRACT:
The reactant manifolds and corners of a molten carbonate fuel cell stack are sealed with particulate lithium aluminate members which are sufficiently porous so as to resist significant electrolyte migration therethrough. The seal members which are disposed in vertical planes of the stack are preferentially formed from lithium aluminate grains which are bonded together by a silica-free glass binder. The seal members which are disposed in horizontal planes in the stack are preferably formed from lithium aluminate grains which are bonded together by surface hydrolysis. Alumina-clad stainless steel labyrinth seal members are associated with each of the horizontal seal members to inhibit electrolyte migration from the cell electrolyte matrices to the vertical seal members.

REFERENCES:
patent: 4049872 (1977-09-01), Hang
patent: 4514475 (1985-04-01), Mientek
patent: 4548874 (1985-10-01), Katz et al.
patent: 4659635 (1987-04-01), Reiser et al.
patent: 4761348 (1988-08-01), Kunz et al.
patent: 4794055 (1988-12-01), Matsumura et al.

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