Syntheses and Electrochemical Performances of Li₄Ti₅O₁₂ Anode Materials for Lithium Ion Battery

Authors

Yong-long ZHANG, College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China;
Xue-bu HU, College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China;Follow
Yao-qiong WANG, College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China;
Dong-hai HUANG, College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China;

Corresponding Author

Xue-bu HU(xuebu@cqut.edu.cn)

Abstract

Series of spinel lithium titanate (Li₄Ti₅O₁₂) materials were synthesized by one-step solid-state reaction using lithium acetate and TiO₂ as raw materials under different temperatures (750/800/850 °C) and atmospheres (N₂/air). The as-prepared Li₄Ti₅O₁₂ materials were investigated by thermogravimetric analysis, X-ray diffraction, scanning electron microscopy, cyclic voltammotry and charge-discharge test to analyze their crystal structures, microstructures and electrochemical performances. The results show that the Li₄Ti₅O₁₂（L-800N）material obtained at 800 °C under nitrogen atmosphere exhibited better electrochemical performance and smaller particle size. The initial discharge specific capacity of the optimized Li₄Ti₅O₁₂ reached 170.7 mAh·g^-1 at 1.0C with the capacity retention of 94.6% after 100 cycles. Even at the current density of 10C, the initial discharge specific capacity of 143.0 mAh·g^-1 could be achieved, which demonstrated good high-rate and cycling performances.

Graphical Abstract

Keywords

Li4Ti5O12, sintering atmosphere, synthesis temperature, anode material, lithium-ion battery

DOI Link

https://doi.org/10.13208/j.electrochem.140924

Publication Date

2015-04-28

Online Available Date

2015-04-23

Revised Date

2014-12-29

Received Date

2014-09-19

Recommended Citation

Yong-long ZHANG, Xue-bu HU, Yao-qiong WANG, Dong-hai HUANG. Syntheses and Electrochemical Performances of Li₄Ti₅O₁₂ Anode Materials for Lithium Ion Battery[J]. Journal of Electrochemistry, 2015 , 21(2): 181-186.
DOI: 10.13208/j.electrochem.140924
Available at: https://jelectrochem.xmu.edu.cn/journal/vol21/iss2/12