FUEL CELL CATALYST CARRYING METHOD, AND FUEL CELL CONSTITUTED BY THE METHOD

摘要

PROBLEM TO BE SOLVED: To provide a fuel cell catalyst carrying method which enlarges total surface area of catalyst by distributing the catalyst in extremely large number of fine holes physically located in a plane (two dimensionally) and three dimensionally, and to provide the fuel cell formed by the same.

SOLUTION: Catalyst carrier is two-dimensionally transferred on a carbon paper (diffusion layer) serving as an electron conduction layer by applying a screen printing device having three dimensional high positional accuracy and a transfer technology and by using a screen mesh having very fine patterns (dots). Further, the catalyst carrier is transferred on a new carbon paper (diffusion layer) located at a position different in level from that of the dots by using a screen mesh on which patterns (dots) are formed. The three-dimensionally distributed catalyst is fixed on a very thin layer by superposing the plurality of carbon papers and crimping them. It is possible to form a fuel cell electrode composite by sticking and press-bonding the carbon paper and a polymer electrolyte.

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