Corrosion resistant fuel cell substrates

Details Corrosion resistant fuel cell substrates Corrosion resistant fuel cell substrates

H - Electricity

01

M

18/3

H01M 4/96 (2006.01) C04B 35/52 (2006.01) C04B 35/524 (2006.01)

Patent

CA 1320802

Abstract of the Disclosure 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. C-1638 12

590754

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