Fuel cell

Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation

Reexamination Certificate

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Details

C429S047000, C429S047000, C429S047000

Reexamination Certificate

active

06933067

ABSTRACT:
A polymer electrolyte fuel cell includes an electrode including a catalyst layer and a diffusion layer. The catalyst layer is divided into a plurality of portions including an upstream portion and a downstream portion along a reactant gas flow direction. The upstream portion of the catalyst layer has a structure for preventing a drying-up of the cell, and the downstream portion of the catalyst layer has a structure for preventing a flooding of the cell. A structure of the diffusion layer also may differ between at the upstream portion and at the downstream portion.

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Patent Abstracts of Japan, vol. 1999, No. 11, Sep. 30, 1999 & JP 11 154523 A (Fuji Electric Co Ltd), Jun. 8, 1999.
Patent Abstracts of Japan, vol. 1999, No. 04, Apr. 30, 1999 & JP 11 016590 A (Matsushita Electric IND Co Ltd), Jan. 22, 1999.
Patent Abstracts of Japan, vol. 1999, No. 03, Mar. 31, 1999 & JP 10 326622 A (Matsushita Electric IND Co Ltd), Dec. 8, 1998.

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