Solid polymer electrolyte fuel cell system with porous plate eva

Details Solid polymer electrolyte fuel cell system with porous plate eva Solid polymer electrolyte fuel cell system with porous plate eva

1988-02-12

1989-04-25

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 33, 429 34, H01M 810

Patent

active

048247413

ABSTRACT:
A fuel cell or fuel cell stack of the type utilizing a solid polymer electrolyte membrane is cooled by evaporation of water in the hydrogen reactant chamber of the cells. A porous graphite plate or water permeated membrane is disposed in the hydrogen reactant chamber adjacent to the electrolyte membrane. If a graphite plate is used, it is preferably grooved on the surface facing the electrolyte. The resultant lands preferably contact the supported catalyst layer on the membrane to cool the latter. Water is forced into the pores of the plate or membrane from the edge thereof, and the water vapor is carried out of the cells in the hydrogen reactant exhaust stream. A separate cooling system is thus avoided.

REFERENCES:
patent: 3061658 (1962-10-01), Blackmer
patent: 3507702 (1970-04-01), Sanderson
patent: 3516867 (1970-06-01), Dankese
patent: 3678724 (1987-07-01), McElroy

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