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- Title
Sulfonated Microporous Polymer Membranes with Fast and Selective Ion Transport for Electrochemical Energy Conversion and Storage.
- Authors
Zuo, Peipei; Li, Yuanyuan; Wang, Anqi; Tan, Rui; Liu, Yahua; Liang, Xian; Sheng, Fangmeng; Tang, Gonggen; Ge, Liang; Wu, Liang; Song, Qilei; McKeown, Neil B.; Yang, Zhengjin; Xu, Tongwen
- Abstract
Membranes which allow fast and selective transport of protons and cations are required for a wide range of electrochemical energy conversion and storage devices, such as proton‐exchange membrane (PEM) fuel cells (PEMFCs) and redox flow batteries (RFBs). Herein we report a new approach to designing solution‐processable ion‐selective polymer membranes with both intrinsic microporosity and ion‐conductive functionality. Polymers are synthesized with rigid and contorted backbones, which incorporate hydrophobic fluorinated and hydrophilic sulfonic acid functional groups, to produce membranes with negatively charged subnanometer‐sized confined ionic channels. The ready transport of protons and cations through these membranes, and the high selectivity towards nanometer‐sized redox‐active molecules, enable efficient and stable operation of an aqueous alkaline quinone redox flow battery and a hydrogen PEM fuel cell.
- Subjects
POLYMERIC membranes; ENERGY conversion; ENERGY storage; PROTON exchange membrane fuel cells; ALKALINE batteries; QUINONE
- Publication
Angewandte Chemie, 2020, Vol 132, Issue 24, p9651
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202000012