MANUFACTURING METHOD OF MEMBRANE/ELECTRODE ASSEMBLY FOR FUEL CELL

PROBLEM TO BE SOLVED: To provide a manufacturing method of a membrane/electrode assembly capable of suppressing reduction of flatness caused by influences of a dimensional change in a solid polymer electrolyte membrane.SOLUTION: A manufacturing method includes: a sticking step of sticking laminate films 5 and 5 on a front face and a rear face of a solid polymer electrolyte membrane 10 in such a manner that a cross section of at least one side is exposed; a catalyst layer formation part removal step of removing a catalyst layer formation part 2 of the laminate film 5, thereby exposing the front face and the rear face of the solid polymer electrolyte membrane 10; an application step of applying a catalyst ink 3 to the exposed front and rear faces of the solid polymer catalyst membrane 10 while heating the catalyst ink on a heating part; and a drying step of drying the catalyst ink 3, thereby forming a catalyst layer 50. A drying time in the drying step is equal to or shorter than 30 seconds.SELECTED DRAWING: Figure 1 【課題】固体高分子電解質膜の寸法変化の影響による平面性の低下を抑制することが出来る膜電極接合体の製造方法を提供する。【解決手段】少なくとも１辺の断面が露出するように固体高分子電解質膜１０の表面及び裏面にそれぞれ、積層フィルム５，５を貼合する貼合工程と、積層フィルム５の触媒層形成部２を除去して固体高分子電解質膜１０の表面及び裏面を露出させる触媒層形成部除去工程と、加熱部上で加熱しながら、触媒インク３を、露出した固体高分子電解質膜１０の表面及び裏面に塗布する塗布工程と、触媒インク３を乾燥させて触媒層５０を形成する乾燥工程とを含み、上記乾燥工程における乾燥時間が３０秒以下である。【選択図】図１