Direct oxidation fuel cell and method for operating direct oxidation fuel cell system
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsHideyuki Ueda, Shinsuke Fukuda
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Abstract
A direct oxidation fuel cell includes at least one unit cell. The at least one unit cell includes an anode, a cathode, and a hydrogen-ion conductive polymer electrolyte membrane interposed between the anode and the cathode. The anode includes: a catalyst layer in contact with the polymer electrolyte membrane; and a diffusion layer. The diffusion layer includes: a porous composite layer containing a water-repellent binding material and an electron-conductive material; a first conductive porous substrate provided on the anode-side separator side of the porous composite layer; and a second conductive porous substrate provided on the catalyst layer side of the porous composite layer.
Claims10
A direct oxidation fuel cell comprising at least one unit cell, said at least one unit cell comprising an anode, a cathode, a hydrogen-ion conductive polymer electrolyte membrane interposed between said anode and said cathode, an anode-side separator with a flow channel for supplying and discharging a fuel to and from said anode, and a cathode-side separator with a gas flow channel for supplying and discharging an oxidant gas to and from said cathode,
- wherein said anode comprises:
- a catalyst layer in contact with said polymer electrolyte membrane;
- and a diffusion layer, and
- said diffusion layer comprises:
- a porous composite layer comprising a water-repellent binding material and an electron-conductive material;
- a first conductive porous substrate provided on an anode-side separator side of said porous composite layer;
- and a second conductive porous substrate provided on a catalyst layer side of said porous composite layer.
Dependencies are inferred from the claim text.