| 摘要 |
PROBLEM TO BE SOLVED: To provide a solid polymer fuel cell that has a high output and can maintain a high output for a long period by having a cation exchange film which has high strength and low resistance. SOLUTION: A cation exchange film, which is made of a laminate of two or more layers of perfluorocarbon polymer film having sulfonic acid of different percentage of moisture content and, of which one or more of film is made of a complex of perfluorocarbon polymer and porous film, is used as a solid polymer electrolyte. |
