Ion conductor dispersion, polymer electrolyte membrane prepared therefrom, membrane-electrode assembly, and fuel cell

Abstract

Provided is an ion conductor dispersion capable of improving the chemical and mechanical durability of a polymer electrolyte membrane. The ion conductor dispersion according to the present disclosure includes an ion conductor, a crosslinking agent, and a solvent, and has a contact angle of at most 135° with respect to a polytetrafluoroethylene (PTFE) porous membrane. Here, the contact angle is measured 1 second after the ion conductor composition is dropped on the polytetrafluoroethylene (PTFE) porous membrane under the conditions of 25° C. and a relative humidity of 60%.

Dependencies are inferred from the claim text.