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

被引：342

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

页码：1876 / 1878

页数：3

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