| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electrode enhancing catalyst efficiency by sufficiently ensuring the three-phase interface of reaction gas, a catalyst, and an electrolyte in carbon nano-horns, efficiently advancing electrode reaction with a catalyst carrier, enhancing the power generation efficiency of a fuel cell, and in addition enhancing characteristics; and to provide a polymer electrolyte fuel cell equipped with the electrode capable of obtaining high cell output. <P>SOLUTION: An electrode catalyst for the fuel cell is comprised of catalyst metal 2 carried on a carbon nano-horn aggregate carrier by using the carbon nano-horn aggregate 1 as a carrier, and a polymer electrolyte 3 covering the carbon nano-horn aggregate carrier, and the catalyst metal is not carried in the deep parts in a region between the carbon nano-horns. Average particle size of the catalyst metal is preferably 3.2-4.6 nm. <P>COPYRIGHT: (C)2007,JPO&INPIT |
