The present invention relates to a laminated membrane comprising a membrane (I) which comprises aromatic polymer electrolyte containing a super strong acid group and a membrane (II) which comprises one compound selected from the group consisting of electrolytes of perfluoroalkylsulfonic acid polymer and non-super strong acid polymer, and a laminated membrane comprising a membrane (III) which comprises a perfluoroalkylsulfonic acid polymer electrolyte and a membrane (IV) which comprises a non-super strong acid polymer electrolyte. The laminated membrane of the present invention is an electrolyte membrane excellent in generation performance and excellent also in the respect of mechanical strength.
本发明涉及一种层叠膜,包括由含有超强酸基团的芳香族聚合物电解质组成的膜 (I) 和由选自
全氟烷基
磺酸聚合物电解质和非超强酸聚合物电解质组成的组中的一种化合物组成的膜 (II) ,以及包括由
全氟烷基
磺酸聚合物电解质组成的膜 (III) 和由非超强酸聚合物电解质组成的膜 (IV) 的层叠膜。本发明的层叠膜是一种电解质膜,具有优异的发电性能和机械强度。