| 尖晶石型掺杂锂钛复合氧化物的性能研究 |
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| 引用本文： | 陈猛,金江敏,李金媛.尖晶石型掺杂锂钛复合氧化物的性能研究[J].应用科技,2007,34(10):58-60. |
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| 作者姓名： | 陈猛 金江敏 李金媛 |
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| 作者单位： | 哈尔滨工程大学,材料科学与化学工程学院,黑龙江,哈尔滨,150001 |
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| 摘 要： | 采用高温固相法合成尖晶石型锂钛复合氧化物,并对材料进行Sn、Cr掺杂改性.采用XRD测试对材料进行表征,恒流充放电,电化学阻抗,循环伏安测试方法对材料进行电化学性能测试.实验结果表明,Sn、Cr复合掺杂提高了材料的容量,其中,ST首次放电容量达到168 mAh/g,SC的首次放电容量达到170 mAh/g.同时降低了材料的放电电压平台,改善了材料的电化学性能.
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| 关 键 词： | 锂离子电池 负极材料 锂钛氧化物 掺杂 |
| 文章编号： | 1009-671X（2007）10-0058-03 |
| 修稿时间： | 2007-06-11 |
Research on spinel-type lithium and titanium composite oxides doped with Sn and Cr |
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| CHEN Meng,JIN Jiang-min,LI Jin-yuan.Research on spinel-type lithium and titanium composite oxides doped with Sn and Cr[J].Applied Science and Technology,2007,34(10):58-60. |
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| Authors: | CHEN Meng JIN Jiang-min LI Jin-yuan |
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| Institution: | College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001 ,China |
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| Abstract: | Spinel-type lithium and titanium composite oxide was synthesized by using high temperature solid-state reaction,then modified by doping Sn and Cr elements.The obtained samples were characterized by X ray diffraction,and tested by A/C impedance spectroscopy,cyclic voltammetry and galvanostatic cycling methods.The results indicated that the samples doped with Sn and Cr simultaneously have better electrochemical performance with higher specific capacity and lower discharge voltage.The initial discharge capacity of ST reaches as high as 168 mAh/g and that of SC 170 mAh/g.Meanwhile,the discharge voltage plateau is decreased,improving the electrochemical property of this material. |
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| Keywords: | lithium ion battery anode material lithium and titanium oxide doping |
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