METHOD FOR PREPARATION OF A MEMBRANE-ELECTRODE ASSEMBLY FOR FUEL CELL BY THE ELECTROSPRAY TECHNIQUE

摘要

A method for producing a membrane-electrode assembly for a fuel cell through an electro-spray process is provided to obtain a uniform catalyst layer without hydration of a membrane, to minimize loss of a catalyst, and to realize high catalytic availability and improved quality. A method for producing a membrane-electrode assembly for a fuel cell through an electro-spray process comprises the steps of: (a) mixing 100 parts by weight of a catalyst for a fuel cell, 20-60 parts by weight of a proton conductive ionomer and 500-1500 parts by weight of an alcohol solvent to form catalyst layer-forming slurry(1); (b) coating the catalyst layer-forming slurry directly onto a membrane(5) through an electro-spray process while the membrane is in heat treatment at 40-150 deg.C, thereby forming a catalyst layer on the membrane; and (c) fixing the coated catalyst layer by using a hot press to obtain a membrane-electrode assembly.