塑料科技2024，Vol.52Issue(7)：47-51,5.DOI:10.15925/j.cnki.issn1005-3360.2024.07.010
超临界二氧化碳法制备高性能磺化聚醚醚酮电解质膜及性能研究
Preparation of High-Performance Sulfonated Polyether Ether Ketone Electrolyte Membrane by Supercritical Carbon Dioxide Method and Investigation of Its Properties
摘要
Abstract
The composite electrolyte membranes were fabricated using sulfonated polyether ether ketone(SPEEK)as the precursor material and supercritical carbon dioxide extraction technology,resulting in enhanced ionic conductivity,water absorption,and low methanol permeability.The water absorption of polyether ether ketone(PEEK)electrolyte membranes was enhanced by the sulfonation process,attributed to the formation of efficient ion pathways.The results showed that the ion exchange capacity(IEC)value of the SPEEK electrolyte membrane increased to 1.38 meq/g as the sulfonation time was extended from 3 h to 12 h,concurrently resulting in an increase in the degree of sulfonation to 46% .After sulfonation,the decomposition temperature of the electrolyte membrane decreased,reaching a lower value of 420℃.As the sulfonation time increased,the ionic conductivity exhibited an increase from 1.37×10-10 S/cm to 1.16×10-4 S/cm,meanwhile the methanol diffusion coefficient demonstrated a decrease to 2.183×10-7 cm2/s.The study indicates that using sulfonation and supercritical carbon dioxide fluid extraction processes can prepare SPEEK electrolyte membrane with high ionic conductivity and low methanol permeability.关键词
磺化/聚醚醚酮/超临界二氧化碳/电解质薄膜Key words
Sulfonation/Polyether-ether-ketone/Supercritical carbon dioxide/Electrolyte membrane分类
化学化工引用本文复制引用
周皇卫,李萌崛,曹剑飞,陈德平..超临界二氧化碳法制备高性能磺化聚醚醚酮电解质膜及性能研究[J].塑料科技,2024,52(7):47-51,5.基金项目
四川省大学生创新创业训练项目(S20231116083) （S20231116083）
成都工业学院科研项目(2023ZR002) （2023ZR002）
