Fuel cell separator and method of manufacture

Details Fuel cell separator and method of manufacture Fuel cell separator and method of manufacture

2006-10-24

2006-10-24

Kalafut, Stephen J. (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C252S511000, C264S328100, C264S331110

Reexamination Certificate

active

07125624

ABSTRACT:
A fuel cell separator is molded from a resin composition containing specific amounts of graphite, thermosetting resin and internal release agent. The graphite is a synthetic graphite powder prepared by graphitizing lump coke. The thermosetting resin is a mixture of phenolic novolac, benzoxazine and polycarbodiimide resins. The molded separator does not need to be machined, has a significantly improved electrical conductivity, heat resistance and mechanical strength, and even when very thin is resistant to breakage during molding and fuel cell assembly.

REFERENCES:
patent: 4301222 (1981-11-01), Emanuelson et al.
patent: 4668496 (1987-05-01), Korb et al.
patent: 6461755 (2002-10-01), Saito et al.
patent: 6746792 (2004-06-01), Hasegawa et al.
patent: 6890678 (2005-05-01), Tanno
patent: 2002/0004156 (2002-01-01), Mizuno
patent: 2002-260682 (2002-09-01), None

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