Abstract: Provided is a solid polyelectrolyte fuel cell capable of suppressing a gas leak between a fuel electrode film side and an oxide electrode film side by suppressing deterioration of a solid polyelectrolyte film on its peripheral side. A solid polyelectrolyte fuel cell includes: a cell in which electrode films are provided on one side and the other side of a solid polyelectrolyte film, respectively; a first gas diffusion layer provided so as to cover the electrode film on one side of the cell; a second gas diffusion layer provided so as to cover the electrode film on the other side of the cell; and separators provided on the one side and the other side of the cell, respectively, with the gas diffusion layers interposed therebetween.

Abstract: Provided is a solid polyelectrolyte fuel cell capable of suppressing a gas leak between a fuel electrode film side and an oxide electrode film side by suppressing deterioration of a solid polyelectrolyte film on its peripheral side. A solid polyelectrolyte fuel cell includes: a cell in which electrode films are provided on one side and the other side of a solid polyelectrolyte film, respectively; a first gas diffusion layer provided so as to cover the electrode film on one side of the cell; a second gas diffusion layer provided so as to cover the electrode film on the other side of the cell; and separators provided on the one side and the other side of the cell, respectively, with the gas diffusion layers interposed therebetween.

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.

Abstract: A fuel cell membrane electrode having a cathode catalyst layer on one surface of a polymer electrolyte membrane, and an anode catalyst layer on the other surface of the membrane, the cathode catalyst layer being supplied with an oxygen-containing gas, and the anode catalyst layer being supplied with a hydrogen-containing gas, and wherein an active oxygen removing layer containing an active oxygen removing material is provided on at least one of interfaces between the membrane and the catalyst layers coated on both surfaces of the membrane, and the active oxygen removing material is CO3O4, Sb2O4, activated carbon, or a solid acid catalyst; and a fuel cell using the membrane electrode.

Abstract: A stacked fuel cell comprises a plurality of cell films and a plurality of separators stacked alternately. The cell films each comprise a solid polymer electrolyte film sandwiched between electrode films made of graphite, while the separators are electrically conductive graphite separators each having a fuel gas channel formed in one surface thereof, and an oxidant gas channel formed in the other surface thereof. In the stacked fuel cell, a plurality of partition plates are interposed with predetermined spacing in the direction of stacking. The partition plates each have an electrically conductive graphite terminal board having a groove formed as a piercing portion, through which a band-shaped fastener made of resin (for example, polypropylene) is passed in a direction perpendicular to the direction of stacking, and an electrically conductive graphite end separator having a gas channel formed in a surface thereof in contact with the cell film.

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.

Abstract: Disclosed is a fuel cell stack, comprising a fuel cell laminate body prepared by laminating a plurality of unit cells each having a solid polymer membrane sandwiched between electrodes and a fastening means for fastening the fuel cell laminate body in the direction of lamination of the unit cells, wherein the fastening means includes support members equipped with flanges and arranged at the upper and lower edges of the fuel cell laminate body, thin plates joined to the support members at the upper and lower end portions of the fuel cell laminate body, and fastening bolts for fastening the support members in the vertical direction of the fuel cell laminate body.