Volume 17, Issue 51 2102641
Perspective

SiOx Anode: From Fundamental Mechanism toward Industrial Application

Haoyu Li

Haoyu Li

School of Chemical Engineering, Sichuan University, Chengdu, 610065 P. R. China

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Haodong Li

Haodong Li

School of Chemical Engineering, Sichuan University, Chengdu, 610065 P. R. China

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Zhiwei Yang

Zhiwei Yang

School of Chemical Engineering, Sichuan University, Chengdu, 610065 P. R. China

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Liwen Yang

Liwen Yang

School of Chemical Engineering, Sichuan University, Chengdu, 610065 P. R. China

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Jueying Gong

Jueying Gong

School of Chemical Engineering, Sichuan University, Chengdu, 610065 P. R. China

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Yuxia Liu

Yuxia Liu

The Key Laboratory of Life-Organic Analysis, Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong, 273165 P. R. China

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Gongke Wang

Gongke Wang

School of Materials Science and Engineering, Henan Normal University, XinXiang, 453007 P. R. China

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Zhuo Zheng

Zhuo Zheng

College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065 P. R. China

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Benhe Zhong

Benhe Zhong

School of Chemical Engineering, Sichuan University, Chengdu, 610065 P. R. China

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Yang Song

Corresponding Author

Yang Song

School of Chemical Engineering, Sichuan University, Chengdu, 610065 P. R. China

E-mail: [email protected], [email protected]

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Yanjun Zhong

Yanjun Zhong

School of Chemical Engineering, Sichuan University, Chengdu, 610065 P. R. China

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Zhenguo Wu

Zhenguo Wu

School of Chemical Engineering, Sichuan University, Chengdu, 610065 P. R. China

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Xiaodong Guo

Corresponding Author

Xiaodong Guo

School of Chemical Engineering, Sichuan University, Chengdu, 610065 P. R. China

E-mail: [email protected], [email protected]

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First published: 23 September 2021
Citations: 57

Abstract

Silicon monoxide (SiO) has been explored and confirmed as a promising anode material of lithium-ion batteries. Compared with pure silicon, SiO possesses a more stable microstructure which makes better comprehensive electrochemical properties. However, the lithiation mechanism remains in dispute, and problems such as poor cyclability, unsatisfactory electrical conductivity, and low initial Coulombic efficiency (ICE) need to be addressed. Additionally, more attention needs to be paid on the internal relationship between electrochemical performances and structures. In this review, the different preparation processes, the derived microstructure of the SiOx, the corresponding lithiation mechanism, and electrochemical properties are summarized. Researches about disproportionation reaction which is regarded as a key point and other modifications are systematically introduced. Closely linked with structure, the advantages and disadvantages of various SiOx anode materials are summarized and analyzed, and the possible directions toward the practical applications of SiOx anode material are presented. In a word, from the preparation and reaction mechanism of the material to the modifications and future development, a complete and systematical review on SiOx anode is presented.

Conflict of Interest

The authors declare no conflict of interest.

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