Fuel cell and separator structure used therein

Details Fuel cell and separator structure used therein Fuel cell and separator structure used therein

2008-01-22

2008-01-22

Cantelmo, Gregg (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S006000

Reexamination Certificate

active

07320841

ABSTRACT:
Disclosed is a fuel cell having two or more stacked units each containing a first separator in which a manifold and fuel gas passage section are formed, first seal sheet which seals the first separator periphery, membrane electrode assembly, second seal sheet which seals a second separator periphery and second separator in which a manifold and oxidizing gas passage section are formed, in this order, wherein each of the fuel gas passage section and oxidizing gas passage section is in communication with the corresponding manifold. Comb teeth structure having comb teeth are provided between the fuel gas passage section and manifold and between the oxidizing gas passage section and manifold in a diffusion layer on the membrane electrode assembly, wherein slits spaces formed between the comb teeth are in communication with the diffusion layer.

REFERENCES:
patent: 6231053 (2001-05-01), Wakamatsu
patent: 2004/0110056 (2004-06-01), Hatoh et al.
patent: 2000-331691 (2000-11-01), None
patent: 2001266910 (2001-09-01), None
patent: 2003-272659 (2003-09-01), None

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