| Li4Ti5O12的合成及其性能研究 |
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| 引用本文： | 徐宇虹,巩桂英,马萍,张宝宏.Li4Ti5O12的合成及其性能研究[J].电源技术,2007,31(2):140-142,146. |
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| 作者姓名： | 徐宇虹 巩桂英 马萍 张宝宏 |
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| 作者单位： | 哈尔滨工程大学,化工学院,黑龙江,哈尔滨,150001 |
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| 摘 要： | 用固相法制备了尖晶石Li4Ti5O12,用X射线衍射(XRD)对样品进行了表征.采用恒电流充放电、循环伏安法(CV)、电化学交流阻抗频谱(EIS)技术对Li4Ti5O12体系进行电化学性能测试.首次放电比容量达到163.1 mAh/g,库仑效率达97.5%.经过60次充放电循环之后,容量衰减仅为4.4%.结果表明,Li4Ti5O12是一种循环性能优良的锂离子蓄电池负极材料,可改善锂离子蓄电池的安全和循环性能.
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| 关 键 词： | Li4Ti5O12 锂离子蓄电池 负极材料 |
| 文章编号： | 1002-087X(2007)02-0140-03 |
| 修稿时间： | 2006年7月3日 |
Study on synthesis and properties of Li4Ti5O12 |
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| XU Yu-hong,GONG Gui-ying,MA Ping,ZHANG Bao-hong.Study on synthesis and properties of Li4Ti5O12[J].Chinese Journal of Power Sources,2007,31(2):140-142,146. |
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| Authors: | XU Yu-hong GONG Gui-ying MA Ping ZHANG Bao-hong |
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| Abstract: | Spinel Li4Ti5O12 was prepared by solid-state reaction method,and was characterized by XRD.The system of Li/Li4Ti5O12 was tested by constant current charge-discharge,cyclic voltammetry(CV),electrochemical impedance spectrum(EIS).The initial discharge capacity was 163.1 mAh/g and coulombic efficiency reached 97.5%.The capacity declined only by 4.4% after 60 cycles.The results show that Li4Ti5O12 is a kind of anode material with better cycling performance for lithium-ion battery and can be used to improve the safety and cyclicity of lithium-ion battery. |
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| Keywords: | Li_4Ti_5O_(12) Li-ion battery anode material |
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