Electrochemical in-situ lithiated Li2SiO3 layer promote high performance silicon anode for lithium-ion batteries

Cui, Hongqi; Wang, Zhixing; Jing, Yu; Li, Xinhai; Peng, Wenjie; Guo, Huajun; Duan, Hui; Yan, Guochun; Wang, Jiexi; Li, Guangchao

doi:10.1016/j.mtener.2024.101716

Materials Today Energy

2024

DOI: 10.1016/j.mtener.2024.101716

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Electrochemical in-situ lithiated Li2SiO3 layer promote high performance silicon anode for lithium-ion batteries

Hongqi Cui,

Zhixing Wang,

Yu Jing

et al.

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2024

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Cited by 2 publications

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Controllable SiO_x Coating Layer Promotes High Stable Si Anode for Lithium-Ion Batteries

Jing,

Li,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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Silicon (Si) is considered as one of the most promising candidates for next-generation lithium-ion batteries with high energy density. The main problems are the severe volume expansion and continuous interfacial side reaction of Si that hinder its further application. It can be an effective way by constructing a robust coating layer outside of Si to impede/alleviate the above effect. SiO x with high mechanical strength can largely promote the electrochemical performance of Si. Herein, Si@SiO x material with high specific surface area, high porosity, and controllable coating was synthesized via a simple solid−liquid reaction by LiOH solution etching effect. The etching/ oxidation mechanism of Si under alkaline conditions was thoroughly investigated. The surface oxide layer of Si was beneficial to the formation of a solid electrolyte interphase (SEI) with excellent stability and high Li + conductivity, while its high-porosity structure reduces the volume expansion of the material by approximately 110%. Under the synergistic effect of etching-oxidation, the modified material exhibited superior electrochemical properties. When employed as anode materials, the specific capacity was as high as 3101.5 mAh g −1 and maintained at 841.0 mAh g −1 after 500 cycles at 1 A g −1 .

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Controllable SiO_x Coating Layer Promotes High Stable Si Anode for Lithium-Ion Batteries

Jing,

Li,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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Understanding the effects of different loadings on properties of a silicon/carbon anode for lithium batteries

Liu,

Shu,

Wang

et al. 2024

RSC Adv.

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Electrochemical in-situ lithiated Li2SiO3 layer promote high performance silicon anode for lithium-ion batteries

Cited by 2 publications

References 34 publications

Controllable SiO_x Coating Layer Promotes High Stable Si Anode for Lithium-Ion Batteries

Controllable SiO_x Coating Layer Promotes High Stable Si Anode for Lithium-Ion Batteries

Understanding the effects of different loadings on properties of a silicon/carbon anode for lithium batteries

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Electrochemical in-situ lithiated Li2SiO3 layer promote high performance silicon anode for lithium-ion batteries

Cited by 2 publications

References 34 publications

Controllable SiOx Coating Layer Promotes High Stable Si Anode for Lithium-Ion Batteries

Controllable SiOx Coating Layer Promotes High Stable Si Anode for Lithium-Ion Batteries

Understanding the effects of different loadings on properties of a silicon/carbon anode for lithium batteries

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Controllable SiO_x Coating Layer Promotes High Stable Si Anode for Lithium-Ion Batteries

Controllable SiO_x Coating Layer Promotes High Stable Si Anode for Lithium-Ion Batteries