CATALYST FOR SOLID POLYMER FUEL CELL AND METHOD FOR PRODUCING SAME

摘要

The present invention is a catalyst for a solid polymer fuel cell including: catalyst particles of platinum, cobalt and manganese; and a carbon powder carrier supporting the catalyst particles, wherein the component ratio (molar ratio) of the platinum, cobalt and manganese of the catalyst particles is of Pt : Co : Mn = 1 : 0.06 to 0.39 : 0.04 to 0.33, and wherein in an X-ray diffraction analysis of the catalyst particles, the peak intensity ratio of a Co-Mn alloy appearing around 2¸ = 27° is 0.15 or less on the basis of a main peak appearing around 2¸ = 40°. It is particularly preferred that the catalyst have a peak ratio of a peak of a CoPt 3 alloy and an MnPt 3 alloy appearing around 2¸ = 32° of 0.14 or more on the basis of a main peak.