期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 59, 期 24, 页码 9564-9573出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202000012
关键词
energy conversion and storage; flow battery; fuel cell; ion-exchange membrane; polymers of intrinsic microporosity (PIMs)
资金
- National Natural Science Foundation of China [21922510, 21878281, 91534203, 21720102003]
- DNL Cooperation Fund, CAS [DNL201910]
- Engineering and Physical Sciences Research Council (EPSRC, UK)
- Horizon 2020/FP7 Framework Program, project M4CO2 [608490]
- ERC starting grant NanoMMES
- Department of Chemical Engineering at Imperial College
- China Scholarship Council
- Imperial College Department of Chemical Engineering Start-up Fund
- EPSRC centre CAM-IES
- EPSRC centre Energy SuperStore (UK Energy Storage Research Hub)
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.
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