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

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

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.

Original languageEnglish
Pages (from-to)17198-17208
Number of pages11
JournalJournal of the American Chemical Society
Volume144
Issue number37
Early online date8 Sept 2022
DOIs
Publication statusE-pub ahead of print - 8 Sept 2022

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