Issue 12, 2024

Herringbone packed contorted aromatics with ordered three-dimensional channels as fast-charging and low-temperature lithium-ion battery anodes

Abstract

The long transmission pathways and slow lithium-ion insertion process are the main challenges of anode materials for fast-charging and low-temperature lithium-ion batteries. Herein, hierarchical supramolecular structures with a herringbone packing motif were achieved in the self-assembled crystals of contorted hexabenzocoronene octa-ketone (c-HBC-8O) through C–H⋯π interactions. Due to the formation of ordered three-dimensional lithium-ion transport channels, c-HBC-8O yielded a lithium-ion diffusion coefficient of up to 4.1 × 10−8 cm2 s−1, which is one order of magnitude higher than those of previously reported organic anode materials for lithium-ion batteries. As a proof-of-concept, the c-HBC-8O anode delivered outstanding fast-charging ability, high capacity and durable cycle stability of 298.3 mA h g−1 at 5 A g−1 after 3000 cycles (25 °C) and 320 mA h g−1 at 200 mA g−1 after 1000 cycles even at low temperature (−20 °C). The present strategy opens up new approaches for the design of π-conjugated anode materials for lithium-ion batteries based on weak C–H⋯π interactions.

Graphical abstract: Herringbone packed contorted aromatics with ordered three-dimensional channels as fast-charging and low-temperature lithium-ion battery anodes

Supplementary files

Article information

Article type
Paper
Submitted
28 Nov 2023
Accepted
05 Feb 2024
First published
06 Feb 2024

J. Mater. Chem. A, 2024,12, 7005-7014

Herringbone packed contorted aromatics with ordered three-dimensional channels as fast-charging and low-temperature lithium-ion battery anodes

L. Yang, X. Zhu, Q. Zhou, C. Qi, Q. Wang, F. Shi, M. Zhu, G. Chen, D. Wang, X. Liu, L. Wang, D. Zhang, H. Li and S. Xiao, J. Mater. Chem. A, 2024, 12, 7005 DOI: 10.1039/D3TA07337H

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