MANUFACTURING METHOD FOR MEMBRANE ELECTRODE ASSEMBLY
PROBLEM TO BE SOLVED: To provide a manufacturing method for membrane electrode assembly with high catalytic layer appearance and power generation performance while suppressing heat generation and firing of a catalyst ink by a catalytic reaction.SOLUTION: A manufacturing method, used for manufacturin...
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| Sprache: | eng ; jpn |
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| Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a manufacturing method for membrane electrode assembly with high catalytic layer appearance and power generation performance while suppressing heat generation and firing of a catalyst ink by a catalytic reaction.SOLUTION: A manufacturing method, used for manufacturing a membrane electrode assembly comprised of a catalytic layer and a solid polymer electrolyte membrane, includes at least a process of heating and applying catalyst ink whose water percentage is 35% inclusive to 65% exclusive in a volatile component. The volatile component of the catalyst ink is water and alcohol and the alcohol is higher than water in volatility.SELECTED DRAWING: Figure 1
【課題】触媒反応による触媒インクの発熱・発火を抑制しながら、触媒層外観及び発電性能が良好な膜電極接合体の製造方法を提供する。【解決手段】触媒層と固体高分子電解質膜とからなる膜電極接合体を製造する製造方法であって、揮発成分における水の比率が３５％以上６５％未満の触媒インクを加熱しながら塗布する工程を少なくとも備える。また、前記触媒インクの揮発成分が水およびアルコールであり、前記アルコールは水よりも揮発性が高い。【選択図】図１ |
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