ELECTRODE FOR HIGH POLYMER MOLECULE ELECTROLYTE FUEL CELLS AND ITS MANUFACTURING PROCESS

摘要

PROBLEM TO BE SOLVED: To provide an electrode for high polymer molecule electrolyte fuel cells, and its manufacturing process having small characteristics drop, even if a long-term running is made. SOLUTION: An electrode for high polymer molecule electrolyte fuel cells has conductive bodies having primary particles grain sizes of 10 nm or more and 150 nm or less, and the above electrode is arranged with a hydrogen ion conductivity polymer electrolyte at least on one part of surfaces of the above conductive bodies. Catalyst particles for electrode reaction having grain sizes of 0.5 nm or more and 5 nm or less, are arranged on the surfaces of the above conductive bodies arranged near a hydrogen ion conduction path existing in the inside of the layer of the above hydrogen ion conductivity polymer electrolyte.