SULFONIC ACID GROUP-CONTAINING POLYMER, ION-EXCHANGE MEMBRANE, MEMBRANE/ELECTRODE ASSEMBLY, FUEL CELL, AND POLYMER COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide an ion-exchange membrane having improved physical durability and bondability to an electrode catalytic layer; and to provide a new sulfonic acid group-containing polymer usable therefor. SOLUTION: The sulfonic acid group-containing polymer has the whole structures represented by chemical formulas 1 to 4 as essential repeating units. COPYRIGHT: (C)2007,JPO&INPIT