| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a catalyst powder for a solid polymer fuel cell, which pulverizes a metallic glass while maintaining the amorphous state of the metallic glass, prevents coagulation of generated fine particles of metal glass, and improves electrode property by generating zirconium oxide on the surface of the metallic glass fine particles with a high dispersion. <P>SOLUTION: The metallic glass 11 made in powder state by chemical treatment is pulverized, while cooling by liquid nitrogen, using a rotating pulverizer equipped with a container of super polymer-content polyethylene and a rotor and a pulverization ball of oxide system ceramic, and in the pulverization process, a slurry of metallic glass particulates are made by adding a coupling agent containing zirconium as a central metal, and by sifting out the slurry of the metallic glass particulates, the pulverization ball is removed; thereafter, by applying heat treatment, zirconium oxide 30 is formed on the surface of the metallic glass particulates in a film state or as micro dispersion particles. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
