Electrode for polymer electrolyte fuel cell
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsTakeshi Matsubara, Katsuhiko Kohyama, Hiroshi Shinkai
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Abstract
A polymer electrolyte fuel cell has a catalytic layer comprising a material and a polymer electrolyte, and the catalytic layer contains a fibrous material such as carbon whiskers or hydrophilic fibers. The polymer electrolyte fuel cell in the present invention having a catalytic layer comprising a catalytic material, an ion conducting material, an electron conducting material, and a void forming agent, and voids having diameters of from 60 to 1000 nm in the catalytic layer has a void volume of from 0.15 to 0.25 cm3/g.
Claims6
An electrode for a polymer electrolyte fuel cell, comprising:
- a catalytic layer including a catalyst material;
- an ion conducting material;
- an electron conducting material;
- and
- a void forming agent;
- wherein voids having diameters from 60 to 1000 nm have a volume of from 0.15 to 0.25 cm3/g;
- wherein the catalyst material, the ion conducting material, the electron conducting material and the void forming agent form a mixture;
- wherein the catalytic layer contains a void forming agent in a range of from 5 to 25% by weight;
- and
- wherein the void forming agent is composed of fine fibers having diameters of 0.4 μm or less.
Dependencies are inferred from the claim text.