Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Reexamination Certificate
2005-08-23
2005-08-23
Crepeau, Jonathan (Department: 1746)
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
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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Kawahara Tatsuya
Kino Yoshitaka
Kinoshita Katsuhiko
Ozaki Toshiaki
Crepeau Jonathan
Kenyon & Kenyon
Toyota Jidosha & Kabushiki Kaisha
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