| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a metal catalyst which has a conductive catalytic material and a protonically conductive material coating layer formed on the surface of the conductive catalytic material, and to provide a fuel cell provided with an electrode comprising the metal catalyst. <P>SOLUTION: In the metal catalyst, the surface of the conductive catalytic material is uniformly coated with a protonically conductive material, thereby, a three-phase interface for an electrochemical reaction is easily formed and controlled, the approach of gaseous reactants to a catalyst is facilitated and protons produced by the electrochemical reaction can be effectively transferred through the thin coating layer consisting of the protonically conductive material formed on catalyst particles. The fuel cell is provided with the electrode comprising the metal catalyst. When the electrode is formed by using such a catalyst, the ideal three-phase interfacial electrode structure may be formed and the fuel cell including such an electrode has an improved performance such as efficiency. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
