Composite sulfonated polyarylene ether nitrile sulfone proton exchange membrane and preparation method thereof

By combining sulfonated cobalt phthalocyanine with sulfonated polyarylene ether nitrile sulfone matrix, a composite sulfonated polyarylene ether nitrile sulfone proton exchange membrane with high conductivity, high selectivity and excellent mechanical properties was prepared, which solved the problem of uneven membrane performance in the prior art and achieved low-cost and high-efficiency preparation.

CN121801092APending Publication Date: 2026-04-07UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Patent Information

Application Number
CN202610021528.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-08
Publication Date
2026-04-07

AI Technical Summary

Technical Problem

Existing sulfonated polyarylene ether nitrile proton exchange membranes struggle to balance high proton conductivity and high selectivity, and their preparation process is complex and costly, making it difficult to simultaneously meet the requirements of high conductivity, high selectivity, and excellent mechanical properties.

Method used

A composite sulfonated poly(aryl ether nitrile sulfone) proton exchange membrane was prepared by combining sulfonated cobalt phthalocyanine with a sulfonated polyaryl ether nitrile sulfone matrix and using specific solvent and heat treatment processes. The sulfonated cobalt phthalocyanine provides additional proton transport groups and improves compatibility, thereby achieving high conductivity, high selectivity and excellent mechanical properties.

Benefits of technology

The preparation of a composite sulfonated polyarylene ether nitrile sulfone proton exchange membrane with high conductivity, high selectivity and excellent mechanical properties was achieved, solving the problems of membrane dimensional stability and methanol permeability, and reducing the preparation cost.

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Abstract

The invention relates to the field of polymer functional membrane materials, and particularly provides a composite sulfonated polyarylene ether nitrile sulfone proton exchange membrane and a preparation method thereof. Sulfonated poly (arylene ether nitrile sulfone) is synthesized through nucleophilic substitution reaction, and the sulfonated poly (arylene ether nitrile sulfone) and sulfonated cobalt phthalocyanine are subjected to blending and casting to form a membrane, so that the provided composite sulfonated poly (arylene ether nitrile sulfone) proton exchange resin contains a sulfonic acid structural unit, a sulfone structural unit, a polar cyano group and a phthalocyanine structural unit; the problem that an existing proton exchange membrane is low in sulfonation degree and proton conductivity can be solved, and the proton exchange membrane has the advantages of being high in structural stability, good in mechanical property, excellent in thermal stability and high in safety. The introduction of sulfonated cobalt phthalocyanine can effectively improve the internal structure of the sulfonated polyarylene ether nitrile sulfone proton exchange membrane, promote the conduction rate of water molecules in the membrane, and further improve the proton conductivity of the sulfonated polyarylene ether nitrile sulfone proton exchange membrane. In addition, the manufacturing process is green and simple, the compounding cost is low, and the application prospect is very wide.
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