Issue 6, 2024

Organoboron flank-substituted donor–acceptor polymer anode with ultra-long cycling stability for lithium ion batteries

Abstract

The tunable structure and other properties of organic materials suggest that they can potentially solve the shortcomings of traditional anodes such as graphite. We successfully introduced an organoboron unit into the thiophene-based polymer PBT-2 to construct a donor–acceptor polymer anode. The charge delocalization and LUMO energy level resulting from the unique structure of this material enabled good redox activity and a very stable electrochemical performance in electrochemical tests, with a reversible capacity of 262 mA h g−1 at 0.5 A g−1 and >10 000 cycles at 1 A g−1 with a decay of 0.056‰ per cycle. Accordingly, targeted structural design to overcome the shortcomings of active units such as thiophene can effectively regulate their electrochemical performance, providing a solution for the development of high-performance anode materials for use in lithium ion batteries.

Graphical abstract: Organoboron flank-substituted donor–acceptor polymer anode with ultra-long cycling stability for lithium ion batteries

Supplementary files

Article information

Article type
Paper
Submitted
20 Nov 2023
Accepted
09 Jan 2024
First published
10 Jan 2024

Phys. Chem. Chem. Phys., 2024,26, 5141-5146

Organoboron flank-substituted donor–acceptor polymer anode with ultra-long cycling stability for lithium ion batteries

H. Zhao, T. Liu, W. Zhang, J. Wang, K. Li, Y. Zhou, L. Liu, Y. Bai and X. Pan, Phys. Chem. Chem. Phys., 2024, 26, 5141 DOI: 10.1039/D3CP05634A

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