Electrochemical reduction of nano-SiO2 in hard carbon as anode material for lithium ion batteries

被引：340
作者：
Guo, Bingkun [1 ]
Shu, Jie [1 ]
Wang, Zhaoxiang [1 ]
Yang, Hong [2 ]
Shi, Lihong [2 ]
Liu, Yinong [2 ]
Chen, Liquan [1 ]
机构：
[1] Chinese Acad Sci, Inst Phys, Lab Solid State Ion, Beijing 100190, Peoples R China
[2] Univ Western Australia, Sch Mech Engn, Lab Funct Mat, Crawley, WA 6009, Australia
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2008年 / 10卷 / 12期
关键词：
SiO2; Carbon; Composite; Lithium ion batteries; Anode material;
D O I：
10.1016/j.elecom.2008.09.032
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A composite of silica (SiO2) and hard carbon was prepared by hydrothermal reaction. Special attention was paid to the characterization of the possible electrochemical reduction of nano-SiO2 in the composite. Evidence by solid-state nuclear magnetic resonance (NMR) and X-ray photoelectron spectroscopy (XPS) and high lithium storage capacity of the composite prove the electrochemical reduction of nano-SiO2 and the formation of Li4SiO4 and Li2O as well as Si in the first-discharge. The reversible lithium storage capacity of the nano-SiO2 is as high as 1675 mAh/g. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：1876 / 1878
页数：3
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