Ion Exchange Membranes: Constructing and Tuning Ion Transport Channels

• DOI: 10.1002/adfm.202207366
• Publication Date: 2022-10-17T14:05:50Z
• Authors: Peipei Zuo; Ziang Xu; Qing Zhu; Jin Ran; Liang Ge; Xiaolin Ge; Liang Wu; Zhengjin Yang; Tongwen Xu
• Keywords: Nanoporous

Abstract Ion exchange membranes (IEMs) that can selectively transport ions are crucial to a variety of applications, such as ion extraction/separation, fuel cells, redox flow batteries, and water electrolysis. IEM performance, in terms membrane permeability/conductivity selectivity, relies heavily on the formation effective channels within membranes, there exists tradeoff between which obstructs development widespread adoption IEM‐based processes. To overcome this advance IEM‐related extensive research efforts devoted construction tuning channels, various strategies proposed. These mainly include 1) inducing microphase separation by properly regulating polymer architecture, 2) introducing third phase/region for transfer, 3) realizing high free volume with polyrotaxanes or polymers sterically bulky groups, 4) constructing nanoporous materials. outlined summarized review. Perspectives future directions also discussed.