ANODE FOR FUEL CELL AND FUEL CELL USING THE SAME
First Claim
1. An anode for a fuel cell, comprising an electrode catalyst layer, the electrode catalyst layer comprising:
- a supported catalyst comprising an electroconductive carrier material and catalyst fine particles supported on the electroconductive carrier material;
a proton conductive inorganic oxide; and
a proton conductive organic polymer binder;
the weight ratio between the supported catalyst (C) and the proton conductive inorganic oxide (SA), WSA/WC, being 0.06 to 0.38,the weight ratio between the proton conductive inorganic oxide (SA) and the proton conductive organic polymer binder (P), WP/WSA, being 0.125 to 0.5.
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Abstract
This invention provides an anode for a fuel cell which can realize stable output for a long period of time, and a fuel cell using the anode for a fuel cell. The anode for a fuel cell comprises an electrode catalyst layer, the electrode catalyst layer comprising a supported catalyst comprising an electroconductive carrier material and catalyst fine particles supported on the electroconductive carrier material, a proton conductive inorganic oxide, and a proton conductive organic polymer binder, the weight ratio between the supported catalyst (C) and the proton conductive inorganic oxide (SA), WSA/WC, being 0.06 to 0.38, the weight ratio between the proton conductive inorganic oxide (SA) and the proton conductive organic polymer binder (P), WP/WSA, being 0.125 to 0.5.
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Citations
19 Claims
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1. An anode for a fuel cell, comprising an electrode catalyst layer, the electrode catalyst layer comprising:
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a supported catalyst comprising an electroconductive carrier material and catalyst fine particles supported on the electroconductive carrier material; a proton conductive inorganic oxide; and a proton conductive organic polymer binder; the weight ratio between the supported catalyst (C) and the proton conductive inorganic oxide (SA), WSA/WC, being 0.06 to 0.38, the weight ratio between the proton conductive inorganic oxide (SA) and the proton conductive organic polymer binder (P), WP/WSA, being 0.125 to 0.5. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A membrane electrode assembly comprising a fuel electrode, an oxidizing agent electrode, and an electrolyte membrane disposed between the fuel electrode and the oxidizing agent electrode, wherein
the fuel electrode comprises a catalyst layer, and the catalyst layer comprises: -
a supported catalyst comprising an electroconductive carrier material and catalyst fine particles supported on the electroconductive carrier material; a proton conductive inorganic oxide; and a proton conductive organic polymer binder; the weight ratio between the supported catalyst (C) and the proton conductive inorganic oxide (SA), WSA/WC, being 0.06 to 0.38, the weight ratio between the proton conductive inorganic oxide (SA) and the proton conductive organic polymer binder (P), WP/WSA, being 0.125 to 0.5.
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17. A fuel cell comprising a fuel electrode, an oxidizing agent electrode, and an electrolyte membrane disposed between the fuel electrode and the oxidizing agent electrode, wherein
the fuel electrode comprises a catalyst layer, and the catalyst layer comprises: -
a supported catalyst comprising an electroconductive carrier material and catalyst fine particles supported on the electroconductive carrier material; a proton conductive inorganic oxide; and a proton conductive organic polymer binder; the weight ratio between the supported catalyst (C) and the proton conductive inorganic oxide (SA), WSA/WC, being 0.06 to 0.38, the weight ratio between the proton conductive inorganic oxide (SA) and the proton conductive organic polymer binder (P), WP/WSA, being 0.125 to 0.5.
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18. A process for producing a supported catalyst for a fuel cell, comprising providing catalyst fine particles on an electroconductive carrier held at 400°
- C. or below by sputtering or vapor deposition.
- View Dependent Claims (19)
Specification