| abstract |
An object of the present invention is to provide a polymer electrolyte that can exhibit high power generation performance under both low and high humidification conditions. The polymer electrolyte of the present invention contains a sulfonic acid group, a cyclic body, an ether bond, and a fluorine atom, and has an oxygen solubility of 7.0 mol / m as measured by a Pt thick film method at 80 ° C. and 30% RH. The cohesive energy density calculated by the PCFF force field using LAMMPS is 3 or more and 0.350 or more. [Selection figure] None |