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.
源语言 | 英语 |
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页(从-至) | 1109-1112 |
页数 | 4 |
期刊 | Journal of Power Sources |
卷 | 174 |
期 | 2 |
DOI | |
出版状态 | 已出版 - 6 12月 2007 |
已对外发布 | 是 |