| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a solid polymer electrolyte film for a solid polymer fuel cell, which has low electrical resistance and high heat resistance and is resistant to the repetition of expansion and contraction, and to provide a membrane electrode assembly which has high capability of generating electric power and good durability. <P>SOLUTION: A polymer having a unit (U1) and a unit (U2) is used for a solid polymer electrolyte film 15 (wherein Q<SP>1</SP>, Q<SP>2</SP>are each a perfluoroalkylene group or the like; R<SP>f1</SP>, R<SP>f2</SP>are each a perfluoroalkyl group; X is oxygen or the like; a is 0 or the like; and Y, Z are each a fluorine atom, -CF<SB>3</SB>or the like; s is 0 to 1; and t is 0 to 3). <P>COPYRIGHT: (C)2008,JPO&INPIT |
