METHOD FOR MANUFACTURING RESIN FRAME-ATTACHED ELECTROLYTE MEMBRANE-ELECTRODE STRUCTURE

PROBLEM TO BE SOLVED: To provide a method for manufacturing a resin frame-attached electrolyte membrane-electrode structure, in which a solid polymer electrolyte film and a resin frame member can be firmly bonded to each other by increasing the surface free energy of the solid polymer electrolyte film.SOLUTION: A method for manufacturing a resin frame-attached electrolyte membrane-electrode structure 10 comprises the steps of: bringing a liquid water 50 of 40°C or below into contact with an exposed face 18be of a solid polymer electrolyte film 18 that a stepped MEA 10a includes, which is exposed outwardly of a cathode electrode 22; impregnating the water 50 into the solid polymer electrolyte film 18 inwardly from the exposed face 18be, and then removing part of the water 50 which is present on the exposed face 18be; applying an adhesive 26a to the exposed face 18be; and bonding the exposed face 18be to an adhesion face 24a of a resin frame member 24 through the adhesive, whereby the resin frame-attached electrolyte membrane-electrode structure 10 can be obtained.SELECTED DRAWING: Figure 5 【課題】固体高分子電解質膜の表面自由エネルギを高めて、該固体高分子電解質膜と樹脂枠部材とを強固に接合可能とする樹脂枠付き電解質膜・電極構造体の製造方法を提供する。【解決手段】樹脂枠付き電解質膜・電極構造体１０の製造方法では、段差ＭＥＡ１０ａを構成する固体高分子電解質膜１８のうち、カソード電極２２の外方に露呈する露呈面１８ｂｅに、４０℃以下の液体の水５０を接触させる。そして、固体高分子電解質膜１８の露呈面１８ｂｅよりも内部に水５０を含有させた後、露呈面１８ｂｅ上に存在する水５０を除去する。この露呈面１８ｂｅに塗工した接着剤２６ａを介して露呈面１８ｂｅと樹脂枠部材２４の接着面２４ａとを接合することで樹脂枠付き電解質膜・電極構造体１０が得られる。【選択図】図５