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Published in: Rare Metals 2/2024

16-11-2023 | Original Article

Engineering molecular regulation for SiOx with long-term stable cycle and high Coulombic efficiency as lithium-ion battery anodes

Authors: Fei Wang, Han Gao, Zhao-Yu Niu, Yao-Peng Zheng, Ming-Yan Chuai, Jia-Nan Xu

Published in: Rare Metals | Issue 2/2024

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Abstract

In the current situation where the practical application of silicon anode materials encounters great challenges, silicon oxide (SiOx, 0 ≤ x ≤ 2) has attracted the attention of researchers due to its relatively small volume expansion, stable cycling performance, and low cost, which is possible to realize commercial applications earlier than silicon anode. However, it remains a challenge to prepare SiOx materials with long-term stable cycling performance and high Coulombic efficiency using low-cost methods. In this work, SiOx anode material with high Coulombic efficiency and good long-term cycling stability was prepared at a low cost by hydrolysis of siloxane and in situ polymerization of phenolic resin. The hydrolysis of siloxane was further regulated by different silane coupling agents to regulate the size and microstructure of prepared SiOx materials, which displayed the substantially improved electrochemical performance. The excellent electrochemical performance of SiOx prepared by regulated hydrolysis of siloxane with silane coupling agents is attributed to the effect of silane coupling agent on size and microstructure of SiOx, revealing that the strategy of modulating the hydrolysis of siloxane by silane coupling agent is a potential method to prepare high-performance SiOx materials.

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Appendix
Available only for authorised users
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Metadata
Title
Engineering molecular regulation for SiOx with long-term stable cycle and high Coulombic efficiency as lithium-ion battery anodes
Authors
Fei Wang
Han Gao
Zhao-Yu Niu
Yao-Peng Zheng
Ming-Yan Chuai
Jia-Nan Xu
Publication date
16-11-2023
Publisher
Nonferrous Metals Society of China
Published in
Rare Metals / Issue 2/2024
Print ISSN: 1001-0521
Electronic ISSN: 1867-7185
DOI
https://doi.org/10.1007/s12598-023-02463-1

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