| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a proton conduction membrane or film that has durability and mechanical strength and its manufacturing method, and a fuel cell using the same as a proton exchange membrane. <P>SOLUTION: This is a proton conduction membrane that carries a polymer having a phosphonic acid group at side chain in the pores of the porous membrane. Specifically, a monomer having a phosphonate group is polymerized in the pores of the porous membrane and a polymer having a phosphonate group at side chain is formed and then the above phosphonate group of this polymer is hydrolyzed, thereby, the polymer having the free phosphonic acid group is carried in the pores of the above porous membrane and thus a proton conduction membrane is provided. Further, a fuel cell using the above proton conduction membrane or film as a proton exchange membrane is provided. <P>COPYRIGHT: (C)2003,JPO |
