Niobium doped lithium titanate as a high rate anode material for Li-ion batteries

被引：239

作者：

Tian, Bingbing ^{[1
]}

Xiang, Hongfa ^{[1
]}

Zhang, Le ^{[1
]}

Li, Zhong ^{[1
]}

Wang, Haihui ^{[1
]}

机构：

[1] S China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Guangdong, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2010年 / 55卷 / 19期

关键词：

Lithium-ion batteries; Li4Ti5O12; Li4Ti4.95Nb0.05O12; Anode materials; ELECTROCHEMICAL PROPERTIES; RECHARGEABLE BATTERIES; NEGATIVE ELECTRODE; SPINEL LI4TI5O12; RATE PERFORMANCE; STORAGE; COMPOSITE; INSERTION; BEHAVIOR; CELLS;

D O I：

10.1016/j.electacta.2010.04.068

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Niobium doped lithium titanate with the composition of Li4Ti4.95Nb0.05O12 has been prepared by a sol-gel method. X-ray diffraction (XRD) and scanning electron microscope (SEM) are employed to characterize the structure and morphology of Li4Ti4.95Nb0.05O12. The Li4Ti4.95Nb0.05O12 electrode presents a higher specific capacity and better cycling performance than the Li4Ti5O12 electrode prepared by the similar process. The Li4Ti4.95Nb0.05O12 exhibits an excellent rate capability with a reversible capacity of 135 mAh g(-1) at 10C, 127 mAh g(-1) at 20C and even 80 mAh g(-1) at 40C. Electrical resistance measurement and electrochemical impedance spectra (EIS) reveal that the Li4Ti4.95Nb0.05O12 exhibits a higher electronic conductivity and faster lithium-ion diffusivity than the Li4Ti5O12, which indicates that niobium doped lithium titanate (Li4Ti4.95Nb0.05O12) is promising as a high rate anode for the lithium-ion batteries. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：5453 / 5458

页数：6

共 36 条

[31] Advanced electrochemical performance of Li4Ti4.95V0.05O12 as a reversible anode material down to 0 V [J].

Yi, Ting-Feng ;

Shu, J. ;

Zhu, Yan-Rong ;

Zhu, Xiao-Dong ;

Zhu, Rong-Sun ;

Zhou, An-Na .

JOURNAL OF POWER SOURCES, 2010, 195 (01) :285-288

[32] High-rate characteristics of novel anode Li4Ti5O12/polyacene materials for Li-ion secondary batteries [J].

Yu, Haiying ;

Zhang, Xianfa ;

Jalbout, A. F. ;

Yan, Xuedong ;

Pan, Xiumei ;

Xie, Haiming ;

Wang, Rongshun .

ELECTROCHIMICA ACTA, 2008, 53 (12) :4200-4204

[33] Synthesis of LiFePO4-C cathode materials using a green and low-cost method [J].

Yu, Linghui ;

Liu, Qiaosheng ;

Wang, Haihui .

IONICS, 2009, 15 (06) :689-692

[34] Combustion synthesis of high-performance Li4Ti5O12 for secondary Li-ion battery [J].

Yuan, Tao ;

Cai, Rui ;

Wang, Ke ;

Ran, Ran ;

Liu, Shaomin ;

Shao, Zongping .

CERAMICS INTERNATIONAL, 2009, 35 (05) :1757-1768

[35] Electrochemical study of Li4Ti5O12 as negative electrode for Li-ion polymer rechargeable batteries [J].

Zaghib, K ;

Simoneau, M ;

Armand, M ;

Gauthier, M .

JOURNAL OF POWER SOURCES, 1999, 81 :300-305

[36] Structural and electrochemical characteristics of Li4-xAlxTi5O12 as anode material for lithium-ion batteries [J].

Zhao, Hailei ;

Li, Yue ;

Zhu, Zhiming ;

Lin, Jiu ;

Tian, Zhihong ;

Wang, Ronglin .

ELECTROCHIMICA ACTA, 2008, 53 (24) :7079-7083

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