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Ion‐Selective Microporous Polymer Membranes with Hydrogen‐Bond and Salt‐Bridge Networks for Aqueous Organic Redox Flow Batteries

Anqi Wang Orcid Logo, Rui Tan Orcid Logo, Dezhi Liu, Jiaxin Lu, Xiaochu Wei, Alberto Alvarez‐Fernandez Orcid Logo, Chunchun Ye, Charlotte Breakwell, Stefan Guldin Orcid Logo, Anthony R. Kucernak Orcid Logo, Kim E. Jelfs Orcid Logo, Nigel P. Brandon, Neil B. McKeown Orcid Logo, Qilei Song Orcid Logo

Advanced Materials, Volume: 35, Issue: 12

Swansea University Author: Rui Tan Orcid Logo

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DOI (Published version): 10.1002/adma.202210098

Abstract

Redox flow batteries (RFBs) have great potential for long-duration grid-scale energy storage. Ion-conducting membranes are a crucial component in RFBs, allowing charge-carrying ions to transport while preventing the cross-mixing of redox couples. Commercial Nafion membranes are widely used in RFBs,...

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Published in: Advanced Materials
ISSN: 0935-9648 1521-4095
Published: Wiley 2023
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URI: https://cronfa.swan.ac.uk/Record/cronfa67800
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spelling v2 67800 2024-09-25 Ion‐Selective Microporous Polymer Membranes with Hydrogen‐Bond and Salt‐Bridge Networks for Aqueous Organic Redox Flow Batteries 774c33a0a76a9152ca86a156b5ae26ff 0009-0001-9278-7327 Rui Tan Rui Tan true false 2024-09-25 EAAS Redox flow batteries (RFBs) have great potential for long-duration grid-scale energy storage. Ion-conducting membranes are a crucial component in RFBs, allowing charge-carrying ions to transport while preventing the cross-mixing of redox couples. Commercial Nafion membranes are widely used in RFBs, but their unsatisfactory ionic and molecular selectivity, as well as high costs, limit the performance and the widespread deployment of this technology. To extend the longevity and reduce the cost of RFB systems, inexpensive ion-selective membranes that concurrently deliver low ionic resistance and high selectivity toward redox-active species are highly desired. Here, high-performance RFB membranes are fabricated from blends of carboxylate- and amidoxime-functionalized polymers of intrinsic microporosity, which exploit the beneficial properties of both polymers. The enthalpy-driven formation of cohesive interchain interactions, including hydrogen bonds and salt bridges, facilitates the microscopic miscibility of the blends, while ionizable functional groups within the sub-nanometer pores allow optimization of membrane ion-transport functions. The resulting microporous membranes demonstrate fast cation conduction with low crossover of redox-active molecular species, enabling improved power ratings and reduced capacity fade in aqueous RFBs using anthraquinone and ferrocyanide as redox couples. Journal Article Advanced Materials 35 12 Wiley 0935-9648 1521-4095 energy storage; ion-conducting membranes; microporous polymers; redox flow batteries 23 3 2023 2023-03-23 10.1002/adma.202210098 COLLEGE NANME Engineering and Applied Sciences School COLLEGE CODE EAAS Swansea University Another institution paid the OA fee European Research Council European Union's Horizon 2020. Grant Numbers: 851272, ERC-StG-PE8-NanoMMES, 758370 Engineering and Physical Sciences Research Council. Grant Numbers: EP/V047078/1, EP/W033356/1, EP/P024807/1, EP/R035105/1 EPSRC. Grant Numbers: CAM-IES, EP/P007767/1 UK Energy Storage Research Hub China Scholarship Council 2024-10-18T12:03:31.3860192 2024-09-25T21:28:20.0401734 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering Anqi Wang 0000-0003-3409-823x 1 Rui Tan 0009-0001-9278-7327 2 Dezhi Liu 3 Jiaxin Lu 4 Xiaochu Wei 5 Alberto Alvarez‐Fernandez 0000-0002-2607-3035 6 Chunchun Ye 7 Charlotte Breakwell 8 Stefan Guldin 0000-0002-4413-5527 9 Anthony R. Kucernak 0000-0002-5790-9683 10 Kim E. Jelfs 0000-0001-7683-7630 11 Nigel P. Brandon 12 Neil B. McKeown 0000-0002-6027-261x 13 Qilei Song 0000-0001-8570-3626 14 67800__32634__b52a2f1b4cdd49e1a746042181e6ae28.pdf 67800.VoR.pdf 2024-10-18T11:40:24.0343502 Output 11208538 application/pdf Version of Record true © 2023 The Authors. This is an open access article under the terms of the Creative Commons Attribution License. true eng http://creativecommons.org/licenses/by/4.0/
title Ion‐Selective Microporous Polymer Membranes with Hydrogen‐Bond and Salt‐Bridge Networks for Aqueous Organic Redox Flow Batteries
spellingShingle Ion‐Selective Microporous Polymer Membranes with Hydrogen‐Bond and Salt‐Bridge Networks for Aqueous Organic Redox Flow Batteries
Rui Tan
title_short Ion‐Selective Microporous Polymer Membranes with Hydrogen‐Bond and Salt‐Bridge Networks for Aqueous Organic Redox Flow Batteries
title_full Ion‐Selective Microporous Polymer Membranes with Hydrogen‐Bond and Salt‐Bridge Networks for Aqueous Organic Redox Flow Batteries
title_fullStr Ion‐Selective Microporous Polymer Membranes with Hydrogen‐Bond and Salt‐Bridge Networks for Aqueous Organic Redox Flow Batteries
title_full_unstemmed Ion‐Selective Microporous Polymer Membranes with Hydrogen‐Bond and Salt‐Bridge Networks for Aqueous Organic Redox Flow Batteries
title_sort Ion‐Selective Microporous Polymer Membranes with Hydrogen‐Bond and Salt‐Bridge Networks for Aqueous Organic Redox Flow Batteries
author_id_str_mv 774c33a0a76a9152ca86a156b5ae26ff
author_id_fullname_str_mv 774c33a0a76a9152ca86a156b5ae26ff_***_Rui Tan
author Rui Tan
author2 Anqi Wang
Rui Tan
Dezhi Liu
Jiaxin Lu
Xiaochu Wei
Alberto Alvarez‐Fernandez
Chunchun Ye
Charlotte Breakwell
Stefan Guldin
Anthony R. Kucernak
Kim E. Jelfs
Nigel P. Brandon
Neil B. McKeown
Qilei Song
format Journal article
container_title Advanced Materials
container_volume 35
container_issue 12
publishDate 2023
institution Swansea University
issn 0935-9648
1521-4095
doi_str_mv 10.1002/adma.202210098
publisher Wiley
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering
document_store_str 1
active_str 0
description Redox flow batteries (RFBs) have great potential for long-duration grid-scale energy storage. Ion-conducting membranes are a crucial component in RFBs, allowing charge-carrying ions to transport while preventing the cross-mixing of redox couples. Commercial Nafion membranes are widely used in RFBs, but their unsatisfactory ionic and molecular selectivity, as well as high costs, limit the performance and the widespread deployment of this technology. To extend the longevity and reduce the cost of RFB systems, inexpensive ion-selective membranes that concurrently deliver low ionic resistance and high selectivity toward redox-active species are highly desired. Here, high-performance RFB membranes are fabricated from blends of carboxylate- and amidoxime-functionalized polymers of intrinsic microporosity, which exploit the beneficial properties of both polymers. The enthalpy-driven formation of cohesive interchain interactions, including hydrogen bonds and salt bridges, facilitates the microscopic miscibility of the blends, while ionizable functional groups within the sub-nanometer pores allow optimization of membrane ion-transport functions. The resulting microporous membranes demonstrate fast cation conduction with low crossover of redox-active molecular species, enabling improved power ratings and reduced capacity fade in aqueous RFBs using anthraquinone and ferrocyanide as redox couples.
published_date 2023-03-23T12:03:29Z
_version_ 1813249429275148288
score 11.033506

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