Preparation and Electrochemical Properties of Si/SiOxNanocomposites with Core-shell Structure

被引：0
|
作者：
Yang S. [1 ]
Li Y. [1 ]
Shen D. [1 ]
Dong W. [1 ]
Liu X. [1 ]
机构：
[1] College of Materials Scienceand Engineering, Liaoning University of Engineering and Technology, Fuxin, 123000, Liaoning
来源：
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2019年 / 47卷 / 09期
关键词：
Core-shell; Lithium-ion batteries; Silicon/silicon oxide nanocomposite; Sol-gel;
D O I：
10.14062/j.issn.0454-5648.2019.09.18
中图分类号：
学科分类号：
摘要：
The core-shell Si/SiOx nanocomposites cathode was synthesized by a sol-gel method and a subsequent heat-treatment process as a lithium-ion battery composite materials anode. The structure of composite material was analyzed by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and infrared spectroscopy. The electrochemical properties of the material were evaluated by battery testing equipment and electrochemical workstation. The results show that the surface of Si nanoparticles is coated with SiOx, forming Si/SiOx nanocomposite with a core-shell structure. The sizes of Si nanoparticles are 80-100nm, and the thickness of SiOx shell is 15-19nm. The initial specific capacity of synthesized Si/SiOxnanocomposite anode is examined to be 1093mA•h/g, and the capacity still exceeds 430mA•h/g after 100 cycles of operation, showing a good cycling performance. © 2019, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.
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页码：1313 / 1319
页数：6
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