| 摘要 |
Disclosed is a fuel cell using a metal element (50) whose standard potential than is lower than that of Ru and higher than that of hydrogen. Since the metal element (50) is eluted from the Pt-Ru catalyst (1) before Ru being eluted from the catalyst (1), the elution of Ru from the catalyst can be prevented. Further, the metal element (50) is provided in a diffusion layer and/or a part of a catalyst layer isolated from an electrolyte membrane, the metal element (50) is unlikely to reach the electrolyte membrane even when the metal element (50) is diffused in the form of an ion and hardly reduces the proton conductivity of the electrolyte membrane. Thus, the contamination of the electrolyte membrane can be prevented. Examples of the metal element (50) include Cu, Re and Ge. |
