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Progress in modification of side chain type anion exchange membrane

Authors： YUAN Kunkun， LIAO Dexiang， YUAN Fangzhen， FENG Jingsong， YANG Fan， HAN Mengting， CHEN Qiang

Units： College of Marine Science and Engineering， Shanghai Maritime University， Shanghai 201306， China

KeyWords： side-chain AEMs；aliphatic hydrocarbons；ether-containing；imidazolium type；microphase separation

ClassificationCode：TQ021.4； TQ028

year,volume(issue):pagination： 2025,45(6):166-173

Abstract：

Side-chain type anion exchange membranes（AEMs）have been widely applied in fields such as water electrolysise，seawater desalination，and ion separation due to their controllable hydrophilic-hydrophobic microphase separation structure and stability．This article focuses on side-chain type AEMs and reviews the latest progress of AEMs with aliphatic hydrocarbons，contains ether bonds，and aromatic hydrocarbons side chains in recent years．It particularly analyzes the influence mechanisms of side chain structures such as quaternary ammonium salts，imidazolium salts，and spiroammonium salts on membrane performance．By regulating the alkyl chain length，introducing ether bonds，and cross-linked structure，the hydrophilic-hydrophobic microphase separation，ion transport channels，and chemical stability of the membranes can be optimized．Side-chain engineering can effectively and synergistically optimize the ion exchange capacity（IEC），conductivity，and long-term stability of AEMs．Among them，the imidazolium salt structure shows outstanding stability in highly corrosive environments and has strong application prospects in industries such as seawater hydrogen production and chlor-alkali．This review aims to provide ideas and guidance for the design of side-chain type anion exchange membranes with long-term stability and high separation performance．

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AuthorIntro：

袁坤坤（1999-），男，安徽阜阳人，硕士研究生，主要研究方向为阴离子交换膜.

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