PROTON CONDUCTING MEMBRANE AND PROCESS FOR PRODUCING THE SAME

摘要

A proton conducting membrane that exhibits satisfactory proton conductivity even at low humidity and low temperature. There is provided a proton conducting membrane comprising a block copolymer of such a structure that a main chain skeleton composed of ion conducting polymer segment (A) and non-ion-conducting polymer segment (B) has aromatic rings covalent bonded to each other through a bonding group, characterized in that: (i) the morphology of the membrane has a micro phase separation structure, and (ii) the ion conducting polymer segment (A) constitutes a continuous phase.