| 摘要 |
A fuel cell that includes an anode-side diffusion layer, an anode-side catalyst layer, an electrolyte membrane, a cathode-side catalyst and a cathode-side diffusion layer layered in that order. The anode-side catalyst layer includes Pt-Ru catalyst. A catalyst layer portion of the anode-side catalyst layer apart from the electrolyte membrane and/or the anode-side diffusion layer contains a metal element which is lower in standard potential than Ru and higher in standard potential than hydrogen. The metal element which is lower in standard potential than Ru and higher in standard potential than hydrogen is at least one element which may be selected from, for example, Cu, Re and Ge. By this structure, both prevention of poisoning of Pt-Ru catalyst by CO and prevention of contamination of an electrolyte membrane can be satisfied. |
