Cathode reactant flow field component for a fuel cell stack

Details Cathode reactant flow field component for a fuel cell stack Cathode reactant flow field component for a fuel cell stack

1994-10-07

1996-09-24

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 42, 296233, 502101, 427115, H01M 496

Patent

active

055589553

ABSTRACT:
The reactant flow field on the cathode side of a fuel cell assembly is formed from a plate made from carbon particles that are bonded together by a fluorocarbon polymer binder. The cathode reactant flow field is non-porous, and is hydrophobic due to the presence of the poller binder. The carbon particles are preferably carbon flakes which pack together very tightly, and require only a minor amount of the polymer binder to form a solid plate. The plate will provide cathode reactant flow channels, will conduct electrons and heat and will minimize acid absorption in a fuel cell stack due to its hydrophobic nature.

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