JP2007109559A5 - - Google Patents

Claims (11)

At least, the catalyst layer, wherein the wire-like catalyst, and the electrically conductive film on the surface of the catalyst, in that it consists of. The catalyst layer according to claim 1, wherein the conductive film is made of gold, silver, copper, titanium, or platinum. The catalyst layer according to claim 1 or 2, wherein a film thickness of the conductive film is 5 nm or more and 50 nm or less. A membrane electrode assembly comprising two catalyst layers and a polymer electrolyte membrane present between the two catalyst layers, wherein the two catalyst layers are according to any one of claims 1 to 3. A membrane electrode assembly, which is a catalyst layer. A fuel cell comprising the membrane electrode assembly according to claim 4. A catalyst layer comprising: a step of forming a conductive film on a substrate by a vapor phase growth method or a liquid phase growth method; and a step of applying a wire-like catalyst to the surface of the conductive film. Production method. The step of forming a wire-like catalyst on the surface of the conductive film includes a step of forming a template having holes on the surface of the conductive film, a step of applying a wire-like catalyst to the holes, and The method for producing a catalyst layer according to claim 6, comprising a step of removing the catalyst layer. The method for producing a catalyst layer according to claim 7, wherein the template is made of alumina nanoholes, silicon nanoholes, or silica nanoholes. A step of forming a conductive film on a substrate by a vapor phase growth method or a liquid phase growth method, a step of applying a wire-like catalyst to the surface of the conductive film, the wire-like catalyst and a solid polymer electrolyte A method for producing a membrane electrode assembly, comprising: a step of bonding a film; and a step of removing the substrate. The step of applying a wire-shaped catalyst to the surface of the conductive film includes the steps of forming a template having holes on the surface of the conductive film, the step of applying a wire-shaped catalyst to the holes, and the template. The method for producing a membrane electrode assembly according to claim 9, comprising the step of removing. The method for producing a membrane electrode assembly according to claim 10, wherein the template is made of alumina nanoholes, silicon nanoholes, or silica nanoholes.