| 摘要 |
PURPOSE: To obtain high hydrogen oxidizing performance even if any carbon monoxide is included in fuel gas by providing a catalyst layer, such a layer as performing its reaction for oxidizing mainly hydrogen by making contact with a solid polymer electrolytic film and a layer as oxidizing mainly carbon monoxide on the gas diffusion layer side. CONSTITUTION: A first layer 11 for mainly oxidizing hydrogen and a catalyst layer 1 consisting of a second layer 12 for oxidizing mainly CO are provided in contact with solid polymer electrolytic film 1 and on the gas diffusion side respectively. As a results, CO included in the fuel gas supplied form the diffusion layer side is alternatively oxidized in CO2 . The layer 11 for making hydrogen oxidizing is made of platinum holding catalyst. The catalyst layer 12 for oxidizing CO is a multi-element system catalyst consisting of at least one or more kinds of element selected from among elements Lu, Sn, Os, Rh, Pd, Ni, Cu, Co, Mn, Zn, Ir, Fe and element Pt. |
