Preparation and characteristic of carbon-coated Li4Ti5O12 anode material

被引：272
|
作者：
Wang, G. J. [1 ,2 ]
Gao, J. [1 ,2 ]
Fu, L. J. [1 ,2 ]
Zhao, N. H. [1 ,2 ]
Wu, Y. P. [1 ,2 ,3 ]
Takamura, T. [1 ,2 ]
机构：
[1] Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China
[2] Fudan Univ, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai, Peoples R China
[3] L&F Co Ltd, Taegu 704220, South Korea
来源：
JOURNAL OF POWER SOURCES | 2007年 / 174卷 / 02期
关键词：
spinel Li4Ti5O12; surface modification; anode material; carbon-coating;
D O I：
10.1016/j.jpowsour.2007.06.107
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Carbon-coated spinel Li4Ti5O12 anode material was prepared by heat-treating the mixture of TiO2 (anatase), Li2CO3 and sugar. The products were characterized by X-ray diffraction, scanning electronic microscope and transmission electron microscope. A nanolayer of amorphous carbon was homogeneously coated on the surface of Li4Ti5O12 particles. Electrochemical results show that the carbon-coated Li4Ti5O12 displays larger diffusion coefficient of lithum ions, higher rate capability and excellent reversibility. Its reversible capacity is approximately 160 mAh g(-1) at the rate 0.1 C and good cycling behavior at different current density is achieved. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：1109 / 1112
页数：4
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