| abstract |
Provided is a solid polymer electrolyte membrane which is excellent in strength and can reduce electrolysis voltage when applied to a water electrolysis device. A solid polymer electrolyte membrane, comprising: a fluorine-containing polymer having an ion exchange group, and a woven fabric, wherein the woven fabric has a weight per unit area of 20 to 95 g/m 2 , and the denier of warps constituting the woven fabric The deniers of the weft and the weft are independently 30 to 100. |