POLYELECTROLYTE MEMBRANE INCLUDING POLYIMIDE SUBSTRATE CONTAINING CYCLOALIPHATIC HYDROCARBON, AND METHOD OF MANUFACTURING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a polyelectrolyte membrane which includes superior proton conductivity, mechanical characteristics at high temperatures, durability such as hot water resistance when operated for a long period of time and fuel impermeability, and which is optimum for mobile equipment, co-generation for home or fuel cells of motor vehicles driven by methanol, hydrogen or the like as a fuel.

SOLUTION: The polyelectrolyte membrane is fabricated by introducing vinyl monomer as a graft chain by graft polymerization into a polyimide base material membrane containing cycloaliphatic hydrocarbon, then by chemical conversion of a part of the graft chain into a sulfonic acid group.

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