MEMBRANE-ELECTRODE JUNCTION FOR SOLID POLYMER TYPE FUEL CELL AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a solid polymer type fuel cell having an excellent power generation characteristic and excellent durability by providing a mass-producible membrane-electrode junction having a thin electrolyte membrane and/or a catalyst layer having a uniform thickness, and is low resistance and high tear strength and easy to handle. SOLUTION: In this manufacturing method for the membrane-electrode junction used for arranging and integrating a cathode and an anode comprising electrodes having catalyst layers on/with both surfaces of a solid polymer electrolyte membrane, a cation exchange membrane and/or the catalyst layer is formed by using a dispersion liquid prepared by dispersing an ion exchanger polymer comprising a fluorine-containing polymer having a sulfonic acid group and a fibril-like fluorocarbon polymer in a dispersion medium.