Corrosion resistant fuel cell substrates

Details Corrosion resistant fuel cell substrates Corrosion resistant fuel cell substrates

1989-11-03

1991-01-15

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Having earth feature

429115, 429227, 428408, 264 291, H01M 496

Patent

active

049853163

ABSTRACT:
A porous substrate of a fuel cell electrode assembly is formed by producing a fibrous carbon precursor web by means of a conventional wet paper-making process. The precursor web is then dried and saturated with a wet resinous binder which will carbonize when heated. Substantially the entirety of all of the carbon fibers in the web are thus coated with the binder, and substantially all of the inter-fiber junctures in the web will also be coated with the binder. The saturated web is then dried, and heat treated to convert the binder to a glassy carbon which exhibits superior resistance to corrosion.

REFERENCES:
patent: 3912538 (1975-10-01), Dews et al.
patent: 4360417 (1982-11-01), Reger et al.
patent: 4435252 (1984-03-01), Kadija
patent: 4472460 (1984-09-01), Kampe et al.
patent: 4759989 (1988-04-01), Abe et al.

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