Patent ID: 8470495
Filing Date: 2013-06-25
Classification: H01M,Y02E,Y10T

Abstract:
1. An electrode catalyst comprising: (a) a support; (b) metal catalyst particles coated on the support and formed of a catalytically active metal or metal-containing alloy, the metal catalyst particles directly contacting the support; and (c) an anti-coarsening compound, which is dispersed in at least one region selected from the group consisting of interstitial spaces among the metal catalyst particles and regions around which the metal catalyst particles contact with the support, and has a coarsening temperature higher than that of the metal catalyst particles, wherein the anti-coarsening compound is an aluminum phosphate-based compound, wherein a molar ratio of the metal catalyst particles and the anti-coarsening compound is 1:1 to 5:1, and wherein the anti-coarsening compound is not present on the surface of the metal catalyst particles.