| 锂离子电池负极材料Li_4Ti_(5-x)Co_xO_(12)的结构与电化学性能 |
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| 引用本文： | 金星,陈伟红,廉今兰.锂离子电池负极材料Li_4Ti_(5-x)Co_xO_(12)的结构与电化学性能[J].吉林化工学院学报,2014(5):14-17. |
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| 作者姓名： | 金星 陈伟红 廉今兰 |
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| 作者单位： | [1]吉林化工学院化学与制药工程学院,吉林吉林132022 [2]吉林化工学院资源与环境工程学院,吉林吉林132022 |
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| 基金项目： | 吉林化工学院科技招标项目（吉化院合字2010第103号） |
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| 摘 要： | 主要采用溶胶凝胶法合成Li4Ti5-xCoxO12负极材料,通过XRD、SEM和电化学测试手段,系统的研究了尖晶石型Li4Ti5-xCoxO12的结构和电化学性能.结果表明:0.06≤x≤0.24的样品均为纯相尖晶石型结构,掺杂Co3+对晶粒的生长有抑制作用,但团聚现象明显;引入Co元素降低了样品的首次放电比容量,但是没有影响样品的循环稳定性.
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| 关 键 词： | 锂离子电池 负极材料 Li4Ti5-xCoxO12 电化学性能 |
Structural and Electrochemical Characteristics of Li4Ti5-xCoxO12 as Anode Material for Lithium-ion Batteries |
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| JIN Xing,CHEN Wei-hong,LIAN Jin-lan.Structural and Electrochemical Characteristics of Li4Ti5-xCoxO12 as Anode Material for Lithium-ion Batteries[J].Journal of Jilin Institute of Chemical Technology,2014(5):14-17. |
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| Authors: | JIN Xing CHEN Wei-hong LIAN Jin-lan |
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| Affiliation: | 1. College of Chemical and Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin City 132022, China; 2. College of Environmental and Biological Engineering,Jilin Institute of Chemical Technology,Jilin City 132022, China) |
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| Abstract: | In this paper anode material Li4Tis_x COxOl2 were prepared by sol-gel method, and the materials were systematic studied by X-ray Diffraction （XRD）, Scan election microscope （SEM） and constant current charge-discharge test. The results show that Co-doped samples show pure spinel phase with 0.06≤x≤0.24, doping treatment has significantly suppressed crystal growth, but appeared a phenomenon of agglomeration. The constant current charge-discharge test shows that the first discharge/charge curves of the Co-doped samples was lower than no-doped, but not influenced the cycle performance of the sample. |
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| Keywords: | lithium ion batteries anode materials LinTi5 -xCoxO12 electrochemical performance |
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