Solid polymer type fuel battery
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsHideki Ito, Toshiro Kobayashi, Takuya Moriga, Akihiko Yamada
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Abstract
A polymer electrolyte fuel cell comprising a cell having a solid polymer film, separators disposed on both sides of the cell so as to interpose the cell therebetween, and diffusion layers disposed between the cell and the separators and each having a substrate comprising an electrically conductive porous material and a slurry layer disposed on the substrate, wherein at least a part of each diffusion layer is provided with a gas barrier for preventing the permeation of gas in a direction parallel to the major surface of the diffusion layer.
Claims19
A polymer electrolyte fuel cell comprising a cell having a solid polymer film, separators disposed on both sides of said cell so as to interpose said cell therebetween, and diffusion layers disposed between said cell and the separators, wherein each diffusion layer has a substrate comprising an electrically conductive porous material and a slurry layer disposed on the substrate, wherein at least one gas-impervious gas barrier is present in at least one diffusion layer and the gas barrier prevents the permeation of gas in a direction parallel to the major surface of the diffusion layer.
Dependencies are inferred from the claim text.