The catalyst and its manufacturing method for a polymer electrolyte fuel cell

An object] excellent initial activity (initial power generation characteristics), also to provide a catalyst and a manufacturing method thereof for good polymer electrolyte fuel cell durability. The invention relates to platinum, cobalt, in the catalyst for a polymer electrolyte fuel cell catalyst particles consisting of manganese is supported on a carbon powder carrier, platinum of the catalyst particles, cobalt, composition ratio of manganese ( molar ratio), Pt: Co: Mn = 1: 0.06~0.39: a 0.04 to 0.33, in the X-ray diffraction analysis of the catalyst particles, 2 [Theta] = 27 ° appears in the vicinity Co peak intensity ratio of -Mn alloy, a polymer electrolyte fuel cell catalyst, wherein the 2 [Theta] = 40 ° is 0.15 or less of the main peak appearing in the vicinity as a reference. The catalyst, 2 [Theta] = 32 ° appears in the vicinity CoPt .FIELD 1