METHOD OF FABRICATING AN ELECTROLYTE MATERIAL

摘要

A method of fabricating low EW, water insoluble electrolyte materials includes providing a perfluorinated polymer resin that includes perfluorinated carbon-carbon backbone chain and sulfonyl fluoride ended perfluorinated side chains, extending from the perfluorinated backbone chains via an ether linkage, exposing the perfluorinated polymer resin to ammonia gas to convert the sulfonyl fluoride groups to sulfonamide groups, —SO2—NH2, which reacts with sulfonyl fluoride containing chemical agent(s) to form sulfonimide groups, and at the same time, generates low EW, 3-dimensional cross-linked, water-insoluble perfluorinated polymer electrolyte materials.

主权项

1. A method of fabricating water insoluble, low EW perfluorinated polymer electrolyte materials, comprising:
providing a low EW perfluorinated polymer resin that includes perfluorinated carbon-carbon backbone and perfluorinated side chains that extend from the perfluorinated carbon-carbon backbone chain via an ether linkage and terminate in a sulfonyl fluoride, —SO2—F; exposing the perfluorinated polymer resin to ammonia gas to convert the sulfonyl fluoride groups to sulfonamide groups, —SO2—NH2; and contacting the perfluorinated polymer in sulfonamide form with one or more chemical agents to convert sulfonamide to sulfonimide, —SO2—NH—SO2—, in a 3-dimensional cross-linked, low EW, water-insoluble perfluorinated polymer electrolyte material.