HIGHLY HYDROPHILIZED CARRIER, CATALYST-SUPPORTING CARRIER, FUEL-CELL ELECTRODE, THE MANUFACTURING METHODS THEREOF, AND POLYMER ELECTROLYTE FUEL CELL PROVIDED THEREWITH

摘要

A method for manufacturing a catalyst-supporting carrier, by which a three-phase interface in which reactant gas, catalyst, and electrolyte meet in a carbon is sufficiently assured, and thus catalyst utilization efficiency can be improved. By using this catalyst-supporting carrier, electrode reaction is effectively facilitated, and the fuel-cell electrical efficiency can be improved. Further, an electrode having excellent properties and a polymer electrolyte fuel cell provided with such electrode and capable of obtaining high cell output are provided. The method is a method for manufacturing a catalyst-supporting carrier composed of a catalyst-supporting carbon and polyelectrolyte, and it includes allowing a carbon having pores to support catalyst, introducing a functional group functioning as a polymerization initiator to the surface and/or in the pores of the catalyst-supporting carbon, introducing an electrolyte monomer or an electrolyte monomer precursor for polymerizing it to the polymerization initiator as a starting point, and hydrolyzing at least part of the polymerized polyelectrolyte by a strong alkali.