| 摘要 |
PROBLEM TO BE SOLVED: To provide a low-cost ion exchange membrane of thin structure having an excellent flexibility to serve for handling in assembling a battery, presenting a high ion conductivity, and having less hydrogen permeation. SOLUTION: The polymer ion exchange thin membrane having proton conductivity and a thickness of 60 μm or less, a ruptural point distortion of 180% or more, a membrane resistance of 0.16 S/cm or less, and a hydrogen permeation factor at 80 deg.C ranging between 1.3×10<-8> and 1.5×10<-8> cm<3> (STP).cm/ cm<2> .sec.cmHg is produced by a thin-membrane manufacturing method including a process to make hot press of a perfluorocarbon sulfonic acid polymer ion exchange membrane. |
