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US 6,528,200 B1Granted
Polymer electrolyte fuel cell, electrode for it and method for producing it
AssigneeAsahi Glass Company, Limited
InventorsMasaru Yoshitake, Naoki Yoshida, Toyoaki Ishizaki, Shinji Terazono
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Abstract
An electrode for a polymer electrolyte fuel cell, which is a porous gas diffusion electrode comprising a catalyst powder and an ion exchange resin, wherein a solvent-soluble fluorine-containing polymer having substantially no ion exchange groups exists at least at a part of the inner surface of pores of the electrode.
Claims9
A polymer electrolyte fuel cell comprising a solid polymer electrolyte membrane and a pair of electrodes disposed on both sides of the membrane, wherein at least one of the pair of electrodes is a porous gas diffusion electrode, which comprises:
- a catalyst powder and an ion exchange resin, with at least a portion of the surfaces of the pores of the porous structure of the electrode covered with a solvent-soluble fluorine-containing polymer having no ion exchange groups, wherein the fluorine-containing polymer contains polymer units of the following formula:
Dependencies are inferred from the claim text.