| abstract |
The method for producing a proton conducting membrane of the present invention comprises: A step of forming an organic polymer film by a solution casting method, Immersing the film obtained by film formation in an aqueous solution of an organic compound soluble in water and having a boiling point of 100 ° C. or higher to allow equilibrium swelling; Drying by evaporating water by a heat treatment. According to the present invention, a proton conductive membrane having excellent conductivity and thermal stability and stable workability can be produced by a simple method. The proton conductive membrane obtained by the present invention is a conductive membrane such as an electrolyte for a primary battery, an electrolyte for a secondary battery, a polymer solid electrolyte for a fuel cell, a display element, various sensors, a signal transmission medium, a solid capacitor, and an ion exchange membrane. Can be suitably used. [Selection diagram] None |