Constructing new-generation ion exchange membranes under confinement regime  

作　　者：Xingya Li Peipei Zuo Xiaolin Ge Zhengjin Yang Tongwen Xu 

机构地区：[1]Key Laboratory of Precision and Intelligent Chemistry,School of Chemistry and Materials Science,University of Science and Technology of China,Hefei 230026,China

出　　处：《National Science Review》2025年第2期360-382,共23页国家科学评论(英文版)

基　　金：supported by the National Key R&D Program of China(2022YFB3808500);the Strategic Priority Research Pro-gram of the Chinese Academy of Sciences(XDB0450401);the National Natural Science Foundation of China(U20A20127 and 22438012).

摘　　要：Ion exchange membranes(IEMs)enable fast and selective ion transport and the partition of electrode reactions,playing an important role in the fields of precise ion separation,renewable energy storage and conversion,and clean energy production.Traditional IEMs form ion channels at the nanometer-scale via the assembly of flexible polymeric chains,which are trapped in the permeabilit y/conductivit y and selectivity trade-offdilemma due to a high swelling propensity.New-generation IEMs have shown great potential to break this intrinsic limitation by using microporous framework channels for ion transport under a confinement regime.In this Review,we first describe the fundamental principles of ion transport in charged channels from nanometer to sub-nanometer scale.Then,we focus on the construction of new-generation IEMs and highlight the microporous confinement effects from sub-2-nm to sub-1-nm and further to ultra-micropores.The enhanced ion transport properties brought by the intense size sieving and channel interaction are elucidated,and the corresponding applications including lithium separation,flow battery,water electrolysis,and ammonia synthesis are introduced.Finally,we prospect the future development of new-generation IEMs with respect to the intricate microstructure observation,in-situ ion transport visualization,and large-scale membrane fabrication.

关 键 词：ion exchange membranes microporous confinement regime ion permeabilit y/conductivit y ion selectivity energy storage and production 

分 类 号：F42[经济管理—产业经济]