FUEL CELL ELECTRODE CATALYST AND METHOD FOR PRODUCING SAME

A fuel cell electrode catalyst is provided which includes, at least, M1 that is at least one element selected from 3 to 7 group transition metal elements; M2 that is at least one element selected from iron group elements; M3 that is at least one element selected from 13 group elements; carbon; nitrogen; and oxygen, as constitutional elements, wherein when the atomic ratios of the elements (M1: M2: M3: carbon: nitrogen: oxygen) are represented by a:b:c:x:y:z, 0