| 摘要 |
According to the present invention, a fuel cell electrode catalyst comprising molybdenum, a different transition metal element, and a chalcogen element and having high activity is provided with an index for performance evaluation that is useful for Ogood catalyst design. Also, a fuel cell electrode catalyst is provided, such catalyst comprising at least one transition metal element (M1), molybdenum (Mo), and at least one chalcogen element (X), wherein the value of (Mo—O coordination number)/[(Mo—O coordination number)+(Mo—X coordination number)] is 0.44 to 0.66.
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