Membrane-electrode assembly for fuel cell, method for manufacturing the same, and fuel cell system including the same
AssigneeSamsung SDI Co., Ltd.
InventorsChan-Gyun Shin, Sang-Il Han, In-Hyuk Son
Life of this patent
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Abstract
A membrane-electrode assembly for a fuel cell including an anode and a cathode disposed to face each other and a polymer electrolyte membrane disposed therebetween. The anode and the cathode include a conductive electrode substrate and a catalyst layer formed thereon. The catalyst layer includes ion conductive polymer particles and a catalytic metal. The resulting membrane-electrode assembly has an increased driving voltage.
Claims25
A membrane-electrode assembly for a fuel cell, comprising:
- an anode and a cathode facing each other;
- and
- a polymer electrolyte membrane disposed between the anode and the cathode,
- wherein at least one of the anode and the cathode comprises an electrode substrate coated with a catalyst layer consisting of a uniform mixture of ion conductive polymer particles, a catalytic metal, and optionally a binder resin;
- wherein the icon conductive polymer particles have an average particle diameter ranging from 10 to 1000 nm, inclusive;
- and
- wherein the ion conductive polymer particles comprise an ion conductive polymer resin having a weight average molecule weight ranging from 500 to 300,000, inclusive.
A method of manufacturing a membrane-electrode assembly, comprising:
- forming a catalyst layer composition consisting of a uniform mixture of ion conductive polymer particles, a catalytic metal, a solvent or solvent mixture, and optionally a binder resin;
- and coating an electrode substrate or a polymer electrolyte membrane with the catalyst layer composition to form a catalyst layer;
- wherein the ion conductive polymer particles have an average particle diameter of greater than or equal to 10 nm;
- and
- wherein the ion conductive polymer particles comprise an ion conductive polymer resin having a weight average molecule weight ran in from 500 to 300,000, inclusive.
A fuel cell system, comprising:
- an electricity generating element, comprising:
- a membrane-electrode assembly, comprising:
- an anode and a cathode facing each other, and a polymer electrolyte membrane disposed between the anode and the cathode;
- a fuel supplier to supply a fuel to the electricity generating element;
- an oxidant supplier to supply an oxidant to the electricity generating element;
- and separators disposed on each side of the membrane-electrode assembly, wherein at least one of the anode and the cathode comprises an electrode substrate coated with a catalyst layer consisting of a uniform mixture of ion conductive polymer particles, a catalytic metal, and optionally a binder resin,
- wherein the ion conductive polymer particles have an average article diameter ranging from 10 to 500 nm, inclusive;
- and
- wherein the ion conductive polymer particles comprise an ion conductive polymer resin having a weight average molecule weight ranging from 500 to 300,000, inclusive.
A membrane-electrode assembly, comprising:
- an anode;
- a cathode;
- a polymer electrolyte membrane disposed between the anode and the cathode;
- and a catalyst layer disposed between the polymer electrolyte membrane and at least one of the anode and the cathode, wherein the catalyst layer consists of a uniform mixture of ion conductive polymer particles, a metallic catalyst, and optionally a binder resin.
An electrode for a fuel cell, comprising:
- an electrode substrate;
- and a catalyst layer coated on the electrode substrate, wherein the catalyst layer consists of a uniform mixture of ion conductive polymer particles, a metallic catalyst, and optionally a binder resin.
Dependencies are inferred from the claim text.