ELECTRODE MATERIAL, MEMBRANE-ELECTRODE ASSEMBLY, FUEL CELL STACK AND METHOD FOR MANUFACTURING ELECTRODE MATERIAL

摘要

A first aspect of an electrode material (10) comprises an electrode catalyst (13) obtained by supporting an active catalyst (11) on a conductive support (12), and a porous inorganic material (14) for coating some of the electrode catalyst (13). The surfaces of fine pores in the porous inorganic material (14) are modified with a basic functional group (15). In the main, an electrolyte (ionomer) (16) having proton conductivity is mixed with the electrode material (10).