Preparation and Effects of Mo-doping on the Electrochemical Properties of Spinel Li4Ti5O12 as Anode Material for Lithium Ion Battery

被引：22
作者：
Zhang Xin-Long [1 ]
Hu Guo-Rong [1 ]
Peng Zhong-Dong [1 ]
机构：
[1] Cent S Univ, Sch Met Sci & Engn, Changsha 410083, Hunan, Peoples R China
来源：
JOURNAL OF INORGANIC MATERIALS | 2011年 / 26卷 / 04期
关键词：
lithium-ion batteries; lithium titanate; anode materials; doping; NEGATIVE ELECTRODE MATERIALS; HIGH-RATE PERFORMANCE; CARBON NANOTUBES; COMPOSITE; DEPOSITION; MECHANISM; DOPANT;
D O I：
10.3724/SP.J.1077.2011.10734
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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 morphology 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/g at 30C. The substitution of Mo for Ti site can enhance the electronic conductivity of Li4Ti5O12 via the generation of mixing Ti4+/Ti3+, which indicates that Li4Ti4.95Mo0.05O12 is a promising as a high rate anode for the lithium-ion batteries.
引用
收藏
页码：443 / 448
页数：6
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