Minimized corrosion fuel cell device and a method of making the

Details Minimized corrosion fuel cell device and a method of making the Minimized corrosion fuel cell device and a method of making the

1991-12-26

1993-12-14

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 40, 427115, H01M 496

Patent

active

052701328

ABSTRACT:
A carbon-based material substrate of a cathode electrode of an acid electrolyte fuel cell is made corrosion resistant by depositing a material that is nonwettable by the electrolyte on that major surface of the substrate which carries a catalyst layer all over except for its edge regions to cover such major surface at least at one of those of its edge regions which are exposed to an oxidizing gas during the operation of the fuel cell, but advantageously also at an additional one of its edge regions that is remote from the one edge region but is also exposed to an oxidizing gas during the operation of the fuel cell. The corrosion resistance can be further improved by extending the catalyst layer of the anode electrode on all sides beyond the cathode catalyst layer.

REFERENCES:
patent: 4756980 (1988-07-01), Niksa et al.
patent: 4781727 (1988-11-01), Mitsuda et al.
patent: 4786568 (1988-11-01), Elmore et al.
patent: 4978591 (1990-12-01), Wright
patent: 4985316 (1991-01-01), Bose et al.

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