PRODUCTION METHOD FOR CATALYST MICROPARTICLES AND FUEL CELL CONTAINING CATALYST MICROPARTICLES PRODUCED BY SAID PRODUCTION METHOD

摘要

A method for producing catalyst microparticles exhibiting high activity from the beginning of manufacture, and a fuel cell comprising the catalyst microparticles produced by the production method. Containing particle and a platinum outermost layer covering the palladium-containing particle, wherein the palladium-containing particle and the first solution in which the platinum compound is dissolved are mixed, and at least the surface of the palladium-containing particle surface Forming a first composite comprising palladium and platinum by coating a portion thereof with platinum; The first composite is mixed with a second solution in which the compound is dissolved and at least a part of the surface of the first composite is covered by copper using the copper underpotential deposition method to form a layer containing palladium, To form a second composite; Further, the method for producing catalyst microparticles, wherein the copper in the second composite is replaced with platinum derived from the third solution by mixing the second composite and the third solution in which the platinum compound is dissolved.