| 锂离子电池负极材料钼掺杂钛酸锂的制备及电化学表征 |
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| 引用本文： | 张新龙,胡国荣,彭忠东.锂离子电池负极材料钼掺杂钛酸锂的制备及电化学表征[J].无机材料学报,2011,26(4):443-448. |
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| 作者姓名： | 张新龙 胡国荣 彭忠东 |
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| 作者单位： | 中南大学 冶金科学与工程学院 , 长沙 410083 |
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| 摘 要： | 采用固相合成法制备了钽掺杂材料Li4Ti4.95Mo0.05O12. 通过XRD和SEM来表征Li4Ti4.95Mo0.05O12的结构和形貌. 结果表明: 钼掺杂并没有改变本体材料的结构和形貌, 而且显著提高了材料的循环性能和倍率性能. Li4Ti4.95Mo0.05O12在10C和30C倍率的放电容量分别为117.03和94.24mAh/g.Mo掺杂取代了Li4Ti5O12中的Ti位置, 产生了Ti4+/Ti3+混合价态, 从而提高了钛酸锂的电导率. 所以Li4Ti4.95Mo0.05O12是一种高倍率性能优异的锂离子电池负极材料.
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| 关 键 词： | 锂离子电池 钛酸锂 负极材料 掺杂 |
| 收稿时间： | 2010-11-01 |
| 修稿时间： | 2010-12-09 |
Preparation and Effects of Mo-doping on the Electrochemical Properties of Spinel Li_4Ti_5O_(12) as Anode Material for Lithium Ion Battery |
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| ZHANG Xin-Long,HU Guo-Rong,PENG Zhong-Dong.Preparation and Effects of Mo-doping on the Electrochemical Properties of Spinel Li_4Ti_5O_(12) as Anode Material for Lithium Ion Battery[J].Journal of Inorganic Materials,2011,26(4):443-448. |
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| Authors: | ZHANG Xin-Long HU Guo-Rong PENG Zhong-Dong |
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| Affiliation: | School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China |
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| Abstract: | Mo-doped Li4Ti5O12 in the form of Li4Ti4.95Mo0.05O12 was synthesized via solid state reaction.X-ray diffraction(XRD) and scanning electron microscope(SEM) were employed to characterize the structure and morphol-ogy of Li4Ti4.95Mo0.05O12.Mo-doping does not change the phase composition and particle morphology,while improves remarkably its cycling stability at high charge/discharge rate.Li4Ti4.95Mo0.05O12 exhibits an excellent rate capability with a reversible capacity of 117.03 mAh/g at 10C and even 94.24 mAh... |
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| Keywords: | lithium-ion batteries lithium titanate anode materials doping |
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