Polymer electrolyte fuel cell

Details Polymer electrolyte fuel cell Polymer electrolyte fuel cell

1998-03-24

2000-09-12

Bell, Bruce F.

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 34, 429 35, 429 38, 429 39, 429 40, 429 41, 429 42, 429 44, H01M 810

Patent

active

06117579&

ABSTRACT:
The present invention is for facilitating a removal of water around the catalytic layers of a polymer electrolyte fuel cell and for providing a polymer electrolyte fuel cell which can prevent from drop in output performance caused by excessive wetting of electrode layers due to a long-hour operation or a large current ouputting operation. The polymer electrolyte fuel cell according to the present invention uses an electrode layer having a water repellent porous base area and penetration areas which are higher in water permeability than in the base area. Such base area and penetration areas are formed as by imparting water repellency unevenly on a hydrophilic pore material, for example.

REFERENCES:
patent: 3418168 (1968-12-01), Wentworth
patent: 5292600 (1994-03-01), Kaufman
patent: 5607785 (1997-03-01), Tozawa et al.

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