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US 2026/0188704 A1Published application
Gas diffusion layer and method for manufacturing same, membrane electrode assembly, and fuel cell
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsHiro NODAKA, Tsutomu KAWASHIMA
Life of this patent
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Abstract
A gas diffusion layer includes: a porous member containing conductive particles, conductive fibers, and a polymer resin, wherein the polymer resin has polymer resin particles presenting in particulate form, and the polymer resin includes two or more polymer resin particles fused together in part.
Claims15
A gas diffusion layer including a porous member, the porous member containing conductive particles, conductive fibers, and a polymer resin,
- wherein the polymer resin has polymer resin particles presenting in particulate form, and
- the polymer resin includes two or more polymer resin particles fused together in part.
A method for manufacturing a gas diffusion layer, the method comprising:
- kneading conductive particles, conductive fibers, and a polymer resin in a dispersion solvent to obtain a kneaded product in which a degree of fiberization of the polymer resin is less than 50%;
- and
- rolling the kneaded product to obtain a sheet in which the degree of fiberization of the polymer resin is less than 50%.
A method for manufacturing a gas diffusion layer, the method comprising:
- kneading conductive particles, conductive fibers, a polymer resin, and crushing auxiliary particles having a specific gravity of twice or more a specific gravity of the conductive particles, and crushing and dispersing the conductive particles, the conductive fibers, and the polymer resin with the crushing auxiliary particles to obtain a kneaded product;
- and
- rolling the kneaded product obtained by the kneading, and forming a sheet to obtain a gas diffusion layer composed of the sheet.
Dependencies are inferred from the claim text.