ELECTROLYTE MEMBRANE-ELECTRODE MEMBRANE ASSEMBLY FOR SOLID POLYMER FUEL CELL, PROCESS FOR PRODUCING THE ELECTROLYTE MEMBRANE-ELECTRODE MEMBRANE ASSEMBLY, AND FUEL CELL COMPRISING THE ELECTROLYTE MEMBRANE-ELECTRODE MEMBRANE ASSEMBLY

摘要

An object of the present invention is to provide an electrolyte membrane-electrode membrane assembly for a solid polymer type fuel cell having superior characteristics, wherein a gas diffusion electrode membrane and a solid electrolyte membrane are well bonded, and electrode catalysts are uniformly-dispersed to obtain high electrode activity, a production method thereof and a fuel cell equipped therewith.;The electrolyte membrane-electrode membrane assembly of the present invention is produced by jointing a molded membrane for forming a gas diffusion electrode membrane formed by a paste composition including a polymeric organic compound having a quaternary base forming functional group and an electrode catalyst, with a quaternary base type anion-exchange resin precursor membrane for forming a solid electrolyte membrane having a quaternary base forming functional group; forming of a quaternary base type anion-exchange group by bonding a polyfunctional quaternarizing agent to the quaternary base forming functional group included in each of said molded membrane and said precursor membrane via each functional group of the polyfunctional quaternarizing agent which is present around the bonded interface of both membranes to thereby crosslink the formed anion-exchange resins in both membranes via the polyfunctional quaternarizing agent simultaneously; and subjecting non-quaternarized residue of the quaternary base forming functional groups in thus-obtained assembly to a quaternary base forming treatment.;A fuel cell comprising thus-produced electrolyte membrane-electrode membrane assembly is excellent in bonding property, durability and output voltage.