Aisin Seiki Kabushiki Kaisha

Hikaru Okamoto

Masami Ishii

Hideo Seko

A solid polymer electrolyte fuel cell includes a polymer electrolyte membrane having proton-conductivity. An anode is disposed on one surface of the polymer electrolyte membrane, and a cathode is disposed on the other surface of the polymer electrolyte membrane. The cathode has a first gas diffusion layer joined to a second gas diffusion layer in the thickness direction of the cathode. The second gas diffusion layer has different characteristic compared to the first gas diffusion layer.

Solid polymer electrolyte fuel cell and method for producing electrode thereof

A method for manufacturing a carbon sheet, particularly for an electrode of a fuel cell, includes the steps of forming a sheet by mixing carbon fibers and a bonding agent; drying the formed sheet; immersing the dried formed sheet in a water repellent material particle dispersed dilute solution; removing the formed sheet from the water repel material particle dispersed dilute solution; baking the formed sheet for fixing water repel material particles thereon contained in the water repel material particle dispersed dilute solution; and oxidizing the bonding agent for removing the same from the formed sheet during the baking.

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Hekinan, Japan

Hikaru Okamoto