CPC H01M 4/925 (2013.01) [H01M 8/1004 (2013.01)] | 2 Claims |
1. A method for manufacturing a carrier metal catalyst, comprising:
a supporting step including an adsorption step and a heat treatment step;
the adsorption step includes allowing metal colloidal particles to be adsorped on a carrier powder;
a metal of the metal colloidal particles includes platinum;
the carrier powder is an aggregate of carrier fine particles;
the carrier fine particles include a chained portion structured by a plurality of crystallites being fusion bonded to form a chain;
the carrier fine particles include titanium oxide;
the carrier fine particles are doped with an element having a valence different from a valence of titanium;
the titanium oxide of the carrier powder has an anatase phase/rutile phase ratio of 0.2 or lower; and
the heat treatment step includes performing a heat treatment at 920 to 1100° C. after the adsorption step to convert the metal colloidal particle into the metal fine particles.
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