Polymer electrolyte and preparation method thereof

摘要

Provided are a polymer electrolyte membrane used in fuel cells, and a method for producing the same, the method including a step of filling a crosslinkable ion conductor in the pores of a porous nanoweb support; and a step of crosslinking the ion conductor filled in the pores of the porous nanoweb support. The method for producing a polymer electrolyte membrane uses a relatively smaller amount of an organic solvent, can ameliorate defects of the support caused by solvent evaporation, and can enhance the impregnability of the ion conductor to the support and the convenience of the process.

主权项

1. A method for producing a polymer electrolyte membrane, the method comprising:
filling a crosslinkable ion conductor in the pores of a porous nanoweb support; and crosslinking the ion conductor filled in the pores of the porous nanoweb support, wherein the crosslinkable ion conductor comprises one selected from the group consisting of a sulfonated polyimide (S-PI), a sulfonated polyarylethersulfone (S-PAES), a sulfonated polyether ether ketone, (S-PEEK), a sulfonated polybenzimidazole (S-PBI), a sulfonated polysulfone (S-PSU), a sulfonated polystyrene (S-PS), a sulfonated polyphosphazene, and combinations thereof.