FUEL ELECTRODE CATALYST FOR FUEL CELL, ELECTRODE/MEMBRANE ASSEMBLY, FUEL CELL EQUIPPED WITH ELECTRODE/MEMBRANE ASSEMBLY, AND FUEL CELL SYSTEM

摘要

PPROBLEM TO BE SOLVED: To provide a fuel electrode catalyst for a fuel cell superior in CO poisoning resistance, an electrode/membrane assembly using this fuel electrode catalyst for the fuel cell, the fuel cell equipped with this electrode/membrane assembly, and a fuel cell system. PSOLUTION: The fuel electrode catalyst for the fuel cell has a first platinum-ruthenium alloy catalyst and a second alloy catalyst substituting one part of ruthenium of the first platinum-ruthenium alloy catalyst with a baser metal than ruthenium. The electrode/membrane assembly 7 is formed by arranging there layers of a second alloy catalyst layer 3, a first alloy catalyst layer 4, and a ruthenium catalyst layer 5 sequentially from the polyelectrolyte membrane 1 side to the gas diffusion layer 9 side in this order. PCOPYRIGHT: (C)2008,JPO&INPIT