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Solution-Processable Redox-Active Polymers of Intrinsic Microporosity for Electrochemical Energy Storage

Anqi Wang Orcid Logo, Rui Tan Orcid Logo, Charlotte Breakwell, Xiaochu Wei, Zhiyu Fan, Chunchun Ye, Richard Malpass-Evans, Tao Liu Orcid Logo, Martijn A. Zwijnenburg Orcid Logo, Kim E. Jelfs, Neil B. McKeown Orcid Logo, Jun Chen Orcid Logo, Qilei Song Orcid Logo

Journal of the American Chemical Society, Volume: 144, Issue: 37, Pages: 17198 - 17208

Swansea University Author: Rui Tan Orcid Logo

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DOI (Published version): 10.1021/jacs.2c07575

Abstract

Redox-active organic materials have emerged as promising alternatives to conventional inorganic electrode materials in electrochemical devices for energy storage. However, the deployment of redox-active organic materials in practical lithium-ion battery devices is hindered by their undesired solubil...

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Published in: Journal of the American Chemical Society
ISSN: 0002-7863 1520-5126
Published: American Chemical Society (ACS) 2022
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URI: https://cronfa.swan.ac.uk/Record/cronfa67809
Abstract: Redox-active organic materials have emerged as promising alternatives to conventional inorganic electrode materials in electrochemical devices for energy storage. However, the deployment of redox-active organic materials in practical lithium-ion battery devices is hindered by their undesired solubility in electrolyte solvents, sluggish charge transfer and mass transport, as well as processing complexity. Here, we report a new molecular engineering approach to prepare redox-active polymers of intrinsic microporosity (PIMs) that possess an open network of subnanometer pores and abundant accessible carbonyl-based redox sites for fast lithium-ion transport and storage. Redox-active PIMs can be solution-processed into thin films and polymer–carbon composites with a homogeneously dispersed microstructure while remaining insoluble in electrolyte solvents. Solution-processed redox-active PIM electrodes demonstrate improved cycling performance in lithium-ion batteries with no apparent capacity decay. Redox-active PIMs with combined properties of intrinsic microporosity, reversible redox activity, and solution processability may have broad utility in a variety of electrochemical devices for energy storage, sensors, and electronic applications.
College: Faculty of Science and Engineering
Funders: This work received funding support from the EuropeanResearch Council (ERC) under the European Union’sHorizon 2020 Research and Innovation Programme throughgrant agreement number 851272 (ERC-StG-PE8-Nano-MMES) and grant agreement number 758370 (ERC-StG-PE5-CoMMaD). The authors acknowledge funding supportfrom U.K. Engineering and Physical Sciences Research Council(EPSRC) Programme Grant (SynHiSel, EP/V047078/1) andEP/V027735/1. J.C. acknowledges the financial support fromthe National Natural Science Foundation of China (22121005,22109075, and 21835004). T.L. thanks the National Natural Science Foundation of China (Grant No. 21802102), theFundamental Research Funds for the Central Universities, andthe Science and Technology Commission of ShanghaiMunicipality (19DZ2271500) for funding. R.T. and C.Y.acknowledge full PhD scholarships funded by the ChinaScholarship Council. A.W. acknowledges a full PhD scholar-ship funded by the Department of Chemical Engineering atImperial College and the Royal Society of ChemistryResearcher Mobility Grant. C.B. acknowledges the support ofone EPSRC ICASE PhD studentship. K.E.J. acknowledges theRoyal Society University Research Fellowship. The authorsacknowledge Jiangsu XFNANO Materials Tech. Co., Ltd. forproviding MWCNT, Dr Sarah Fearn from Imperial CollegeLondon for help with SIMS measurements, as well as Miss JiaGuo and Prof Stephen Skinner from Imperial College Londonfor help with electronic conductivity measurements.
Issue: 37
Start Page: 17198
End Page: 17208

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