Gas-passage plates of a fuel cell

Details Gas-passage plates of a fuel cell Gas-passage plates of a fuel cell

1997-08-06

1999-12-07

Maples, John S.

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 33, H01M 810, H01M 802

Patent

active

059980559

ABSTRACT:
Gas passages of a gas-passage plate disposed between fuel cells are improved, in order to enhance gas utilization efficiency and output performance. The supply-gas passages formed on the gas-passage plate on a surface to face one gaseous diffusion electrode comprise an inlet-side channel part, an outlet-side channel part, and an intermediate channel part which connects the inlet-side channel part and the outlet-side channel part. The inlet-side channel part and the outlet-side channel part are lattice-shaped passages. The intermediate channel part has the shape of being folded plural times, and comprises groups of a plurality of straight independent passages, and lattice-shaped passages formed at portions returning from one independent-passages group to the next independent-passages group.

REFERENCES:
patent: 4743518 (1988-05-01), Romanowski
patent: 4977041 (1990-12-01), Shiozawa et al.
patent: 5300370 (1994-04-01), Washington et al.

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