Method of forming fluid flow field plates for...

Details Method of forming fluid flow field plates for... Method of forming fluid flow field plates for...

H - Electricity

01

M

H01M 8/04 (2006.01) C04B 35/52 (2006.01) C04B 35/634 (2006.01)

Patent

CA 2624352

A method of making graphite articles for electrochemical fuel cells, such as fluid flow field plates, by partially impregnating a porous, self- supporting expanded graphite sheet with a first binder comprising a first liquid resin to form a partially impregnated graphite sheet; mechanically deforming at least one surface of the impregnated graphite sheet to form an intermediate fluid flow field plate; impregnating the mechanically deformed intermediate fluid flow field plate with a second binder comprising a second liquid resin to form an impregnated fluid flow field plate; and curing at least the second resin to form a substantially fluid impermeable fluid flow field plate.

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