| 锂离子电池负极材料商业化尖晶石型Li4Ti5O12的改性研究 |
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| 引用本文： | 朱希平.锂离子电池负极材料商业化尖晶石型Li4Ti5O12的改性研究[J].东莞理工学院学报,2012,19(5):70-74. |
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| 作者姓名： | 朱希平 |
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| 作者单位： | 深圳市欧赛科技有限公司,广东深圳,518109 |
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| 摘 要： | 首次采用超声处理的方法对商业化的尖晶石型钛酸锂(Li4Ti5O12)进行改性,并对其电化学性能进行研究。扫描电镜结果显示,与未进行改性的Li4Ti5O12相比,超声改性的材料的粒径更小、分散性更好。另外,超声处理的材料具有更大的比容量和更好的循环性能。超声处理的尖晶石型Li4Ti5O12在1 C和5 C电流下,200次时充电比容量分别为144.7 mAh/g和115.4 mAh/g,分别为首次容量的95.3%和85.6%。交流阻抗结果显示进行超声改性的Li4Ti5O12具有更小的电荷转移阻抗。
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| 关 键 词： | 锂离子电池 负极材料 商业化材料 钛酸锂 |
Research on Commercial Modified Spinel Li4 Tis O12 Anode Material for Lithium-ion Batteries |
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| ZHU Xi-ping.Research on Commercial Modified Spinel Li4 Tis O12 Anode Material for Lithium-ion Batteries[J].Journal of Dongguan Institute of Technology,2012,19(5):70-74. |
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| Authors: | ZHU Xi-ping |
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| Institution: | ZHU Xi-ping (Shenzhen O cell Technology Co. Ltd. , Shenzhen 518109, China) |
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| Abstract: | Commercial spinel Li4TisO12 was firstly post-treated by ultrasonic wave and was investigated via electrochemical methods. Scanning electron microscope （SEM） images show, compared with the commercial LiaTis012, the commercial modified Li4Ti5 O12 has smaller particle size and better dispersion. Additionally, the modified material shows large specific capacities and good cyclic performance. It is 144.7 mAh/g and 115.4 mAh/g that are obtained at 1 C and 5 C in the 200th cycle, with 95.3% and 85.6% of the initial values, respectively. Electrochemical impedance results indicate that the sample ultrasonically treated has smaller charge-transfer resistance. |
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| Keywords: | Lithium-ion battery anode material commercial material Li4TisOl2 |
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