Polymer electrolyte fuel cell and method of manufacturing...

Details Polymer electrolyte fuel cell and method of manufacturing... Polymer electrolyte fuel cell and method of manufacturing...

2005-07-26

2005-07-26

Ryan, Patrick Joseph (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S006000, C429S006000, C429S006000, C264S241000, C427S115000

Reexamination Certificate

active

06921598

ABSTRACT:
The present invention relates to a polymer electrolyte fuel cell comprising: an electrolyte membrane-electrode assembly including an anode, a cathode and a polymer electrolyte membrane interposed therebetween; an anode-side conductive separator plate having a gas flow channel for supplying a fuel gas to the anode; and a cathode-side conductive separator plate having a gas flow channel for supplying an oxidant gas to the cathode.A conductive separator plate made of carbon has poor wettability with water. This has posed the disadvantage that variations in performance are induced by nonuniform gas distribution among cells due to the accumulation of product water or humidifying water in the gas flow channel on the surface of the separator plate.The present invention employs a conductive separator plate comprising a conductive carbon having a hydrophilic functional group, at least in a portion of the gas flow channels, thereby preventing water from accumulating in the gas flow channels.

REFERENCES:
patent: 5922485 (1999-07-01), Enami
patent: 58-38977 (1956-09-01), None
patent: 58-166658 (1983-10-01), None
patent: 59-182871 (1984-12-01), None
patent: 61-145475 (1986-09-01), None
patent: 61-256568 (1986-11-01), None
patent: 4-337250 (1992-11-01), None
patent: 5-74469 (1993-03-01), None
patent: 6-231793 (1994-08-01), None
patent: 7-220734 (1995-08-01), None
patent: 7-235324 (1995-09-01), None
patent: 8-96820 (1996-04-01), None
patent: 9-50817 (1997-02-01), None
patent: 11-16591 (1999-01-01), None
patent: WO 94/05049 (1994-03-01), None

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