期刊
JOURNAL OF POWER SOURCES
卷 174, 期 2, 页码 1109-1112出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2007.06.107
关键词
spinel Li4Ti5O12; surface modification; anode material; carbon-coating
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.
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