文献类型：期刊文献

英文题名：Partially branched poly (aryl piperidinium) anion exchange membranes with excellent efficiency for neutral aqueous organic redox flow batteries

作者：Chen, Qiang[1];Gai, Pengzhu[1];Feng, Wang[1];Zhang, Jin[1];Lu, Yuqin[1];Xu, Fang[1];Qian, Huidong[3];Huang, Kang[1,4];Xu, Zhi[2]

机构：[1]Nanjing Tech Univ, Coll Chem Engn, Natl Engn Res Ctr Special Separat Membranes, Natl Key Lab Mat Oriented Chem Engn, Nanjing 211816, Peoples R China;[2]East China Univ Sci & Technol, State Key Lab Chem Engn Sch Chem Engn, Shanghai 200237, Peoples R China;[3]Shanghai Univ, Coll Sci, Dept Chem, Shanghai 200444, Peoples R China;[4]Nanjing Tech Univ, Suzhou Future Membrane Technol Innovat Ctr, Suzhou 215300, Peoples R China

年份：2026

卷号：748

外文期刊名：JOURNAL OF MEMBRANE SCIENCE

收录：;EI(收录号：20261120248568);WOS:【SCI-EXPANDED(收录号:WOS:001717260900001)】；

基金：This work was supported by the National Natural Science Foundation of China (Grant Nos. 22425802, 22278211, and 22279157) , and the State Key Laboratory of Materials-Oriented Chemical Engineering (Nos. SKL-MCE-23A01) .

语种：英文

外文关键词：Neutral aqueous organic redox flow batteries; Anion exchange membrane; Triphenylmethane; Branched architecture; Microphase separation

摘要：Neutral aqueous organic redox flow batteries (NAORFBs) have attracted widespread attention due to their high safety, low corrosiveness, and wide electrochemical window. Among the key components, anion exchange membranes (AEMs) still encounter severe challenges in balancing high ionic conductivity with low permeability of active species. In this study, a series of AEMs were prepared by introducing triphenylmethane branched architecture into poly (aryl piperidinium) (QPTP-x). Atomic force microscopy analysis and molecular dynamics simulations revealed that the incorporation of the triphenylmethane architecture promotes microphase separation and increases the fractional free volume within the membrane. Flow battery tests show that QPTP-5% achieves the highest energy efficiency of 80.34% at a current density of 80 mA cm-2, outperforming the reference membranes AMVN (64.97%) and DSVN (77.67%). Moreover, during long-term cycling, QPTP-5% has exhibited no significant decline in battery performance after 1400 cycles, indicating excellent long-term cycling stability. These results demonstrate the promising application potential of the prepared AEM in NAORFBs.