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Ye C, Tan R, Wang A, Chen J, Comesaña Gándara B, Breakwell C, Alvarez-Fernandez A, Fan Z, Weng J, Bezzu CG, Guldin S, Brandon NP, Kucernak AR, Jelfs KE, McKeown NB, Song Q. Long-Life Aqueous Organic Redox Flow Batteries Enabled by Amidoxime-Functionalized Ion-Selective Polymer Membranes. Angew Chem Int Ed Engl 2022; 61:e202207580. [PMID: 35876472 PMCID: PMC9541571 DOI: 10.1002/anie.202207580] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Indexed: 11/07/2022]
Abstract
Redox flow batteries (RFBs) based on aqueous organic electrolytes are a promising technology for safe and cost‐effective large‐scale electrical energy storage. Membrane separators are a key component in RFBs, allowing fast conduction of charge‐carrier ions but minimizing the cross‐over of redox‐active species. Here, we report the molecular engineering of amidoxime‐functionalized Polymers of Intrinsic Microporosity (AO‐PIMs) by tuning their polymer chain topology and pore architecture to optimize membrane ion transport functions. AO‐PIM membranes are integrated with three emerging aqueous organic flow battery chemistries, and the synergetic integration of ion‐selective membranes with molecular engineered organic molecules in neutral‐pH electrolytes leads to significantly enhanced cycling stability.
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Affiliation(s)
- Chunchun Ye
- Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, UK.,EaStCHEM, School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, UK
| | - Rui Tan
- Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, UK
| | - Anqi Wang
- Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, UK
| | - Jie Chen
- EaStCHEM, School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, UK
| | | | - Charlotte Breakwell
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, W12 0BZ, UK
| | | | - Zhiyu Fan
- Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, UK
| | - Jiaqi Weng
- Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, UK
| | - C Grazia Bezzu
- EaStCHEM, School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, UK
| | - Stefan Guldin
- Department of Chemical Engineering, University College London, London, WC1E 7JE, UK
| | - Nigel P Brandon
- Department of Earth Science and Engineering, Imperial College London, London, SW7 2AZ, UK
| | - Anthony R Kucernak
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, W12 0BZ, UK
| | - Kim E Jelfs
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, W12 0BZ, UK
| | - Neil B McKeown
- EaStCHEM, School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, UK
| | - Qilei Song
- Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, UK
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