FUEL CELL ELECTRODE CATALYST, METHOD FOR EVALUATING PERFORMANCE OF OXYGEN-REDUCING CATALYST, AND SOLID POLYMER FUEL CELL COMPRISING THE FUEL CELL ELECTRODE CATALYST

摘要

According to the present invention, a fuel cell electrode catalyst comprising a transition metal element and a chalcogen element and having high activity is provided with an index for performance evaluation that is useful for good catalyst design. Also, a fuel cell electrode catalyst is provided, such catalyst comprising at least one transition metal element and at least one chalcogen element, wherein the value of (transition metal element−chalcogen element coordination number)/(transition metal element−transition metal element coordination number) is 0.9 to 2.5.