Preparation and electrochemical properties of core-shell Si/SiO nanocomposite as anode material for lithium ion batteries

T. Zhang; J. Gao; H. P. Zhang; L. C. Yang; Y. P. Wu; H. Q. Wu

doi:10.1016/j.elecom.2006.11.026

Preparation and electrochemical properties of core-shell Si/SiO nanocomposite as anode material for lithium ion batteries

T. Zhang, J. Gao, H. P. Zhang, L. C. Yang, Y. P. Wu, H. Q. Wu

Fudan University

Research output: Contribution to journal › Article › peer-review

178 Scopus citations

Abstract

The Si/SiO nanocomposite was synthesized by a sol-gel method in combination with a following heat-treatment process. It was analyzed by X-ray diffraction (XRD), transmission electron microscopy (TEM), cyclic voltammetry (CV) and capacity measurement as anode material for lithium ion battery. Si nanoparticles were coated with SiO and a core-shell structured nanocomposite was formed. The core-shell Si/SiO nanocomposite displays better reversibility of lithium insertion/extraction and higher coulomb efficiency than virginal Si nanoparticles. The SiO shell envelops the Si nanoparticles to suppress the aggregation of the nanoparticles during cycling. As a result, the core-shell Si/SiO nanocomposite exhibits better capacity retention than virginal Si nanoparticles, indicating that this is a promising approach to improve the electrochemical performance of nano anode materials for lithium ion battery.

Original language	English
Pages (from-to)	886-890
Number of pages	5
Journal	Electrochemistry Communications
Volume	9
Issue number	5
DOIs	https://doi.org/10.1016/j.elecom.2006.11.026
State	Published - May 2007
Externally published	Yes

Keywords

Aggregation
Core-shell
Lithium ion battery
Si/SiO nanocomposite
Sol-gel

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.elecom.2006.11.026

Cite this

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title = "Preparation and electrochemical properties of core-shell Si/SiO nanocomposite as anode material for lithium ion batteries",

abstract = "The Si/SiO nanocomposite was synthesized by a sol-gel method in combination with a following heat-treatment process. It was analyzed by X-ray diffraction (XRD), transmission electron microscopy (TEM), cyclic voltammetry (CV) and capacity measurement as anode material for lithium ion battery. Si nanoparticles were coated with SiO and a core-shell structured nanocomposite was formed. The core-shell Si/SiO nanocomposite displays better reversibility of lithium insertion/extraction and higher coulomb efficiency than virginal Si nanoparticles. The SiO shell envelops the Si nanoparticles to suppress the aggregation of the nanoparticles during cycling. As a result, the core-shell Si/SiO nanocomposite exhibits better capacity retention than virginal Si nanoparticles, indicating that this is a promising approach to improve the electrochemical performance of nano anode materials for lithium ion battery.",

keywords = "Aggregation, Core-shell, Lithium ion battery, Si/SiO nanocomposite, Sol-gel",

author = "T. Zhang and J. Gao and Zhang, {H. P.} and Yang, {L. C.} and Wu, {Y. P.} and Wu, {H. Q.}",

year = "2007",

month = may,

doi = "10.1016/j.elecom.2006.11.026",

language = "英语",

volume = "9",

pages = "886--890",

journal = "Electrochemistry Communications",

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TY - JOUR

T1 - Preparation and electrochemical properties of core-shell Si/SiO nanocomposite as anode material for lithium ion batteries

AU - Zhang, T.

AU - Gao, J.

AU - Zhang, H. P.

AU - Yang, L. C.

AU - Wu, Y. P.

AU - Wu, H. Q.

PY - 2007/5

Y1 - 2007/5

N2 - The Si/SiO nanocomposite was synthesized by a sol-gel method in combination with a following heat-treatment process. It was analyzed by X-ray diffraction (XRD), transmission electron microscopy (TEM), cyclic voltammetry (CV) and capacity measurement as anode material for lithium ion battery. Si nanoparticles were coated with SiO and a core-shell structured nanocomposite was formed. The core-shell Si/SiO nanocomposite displays better reversibility of lithium insertion/extraction and higher coulomb efficiency than virginal Si nanoparticles. The SiO shell envelops the Si nanoparticles to suppress the aggregation of the nanoparticles during cycling. As a result, the core-shell Si/SiO nanocomposite exhibits better capacity retention than virginal Si nanoparticles, indicating that this is a promising approach to improve the electrochemical performance of nano anode materials for lithium ion battery.

AB - The Si/SiO nanocomposite was synthesized by a sol-gel method in combination with a following heat-treatment process. It was analyzed by X-ray diffraction (XRD), transmission electron microscopy (TEM), cyclic voltammetry (CV) and capacity measurement as anode material for lithium ion battery. Si nanoparticles were coated with SiO and a core-shell structured nanocomposite was formed. The core-shell Si/SiO nanocomposite displays better reversibility of lithium insertion/extraction and higher coulomb efficiency than virginal Si nanoparticles. The SiO shell envelops the Si nanoparticles to suppress the aggregation of the nanoparticles during cycling. As a result, the core-shell Si/SiO nanocomposite exhibits better capacity retention than virginal Si nanoparticles, indicating that this is a promising approach to improve the electrochemical performance of nano anode materials for lithium ion battery.

KW - Aggregation

KW - Core-shell

KW - Lithium ion battery

KW - Si/SiO nanocomposite

KW - Sol-gel

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DO - 10.1016/j.elecom.2006.11.026

M3 - 文章

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SN - 1388-2481

VL - 9

SP - 886

EP - 890

JO - Electrochemistry Communications

JF - Electrochemistry Communications

IS - 5

ER -

Preparation and electrochemical properties of core-shell Si/SiO nanocomposite as anode material for lithium ion batteries

Abstract

Keywords

UN SDGs

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