| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a membrane electrode assembly capable of greatly restraining increase of a cross leak volume while preventing degradation of power generation efficiency, and to provide a solid polymer fuel cell using the same. <P>SOLUTION: The membrane electrode assembly (cell) 10 is provided, between a solid polymer electrolyte membrane 11 and a hydrogen electrode 12, with a cerium oxide layer 14 with a thickness made thinner at a downstream side than an upstream side along a circulation direction of fuel gas 1 so that an average density of cerium oxide in a region from a contact surface with the solid polymer electrolyte membrane 11 to a specified distance L face is to be lower toward the downstream side from the upstream side along the circulation direction of the fuel gas 1. <P>COPYRIGHT: (C)2011,JPO&INPIT |
