Li4-xMgxTi5O12(0.05≤x≤0.2) Anode Material with Improved Rate and Electrochemical Performance for Li-Ion Batteries

被引：13

作者：

Zhu, Ji-Ping ^{[1
]}

Zhao, Jun-jie ^{[1
]}

Yang, Hong-wei ^{[1
]}

Yang, Guang ^{[1
]}

机构：

[1] Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Peoples R China

来源：

ADVANCED SCIENCE LETTERS | 2011年 / 4卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Magnesium Doped; Anode Material; High Performance; Li4Ti5O12; Lithium-Ion Batteries; LI4TI5O12; ELECTRODES; DOPANT;

D O I：

10.1166/asl.2011.1233

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Spinel-type electrode material Li4-xMgxTi5O12 (x = 0.05, 0.1, 0.15, 0.2) was synthesized by solid state reaction. Magnesium was doped Li4Ti5O12 to improve the electrochemistry and cycle performances. The samples were characterized by XRD and the grain size analysis was studies by laser particle-size analyzer. The curve of charge and discharge and cycles of Mg doped Li4Ti5O12 were researched. The results showed that the electrochemistry properties and cycle performance of magnesium doped Li4Ti5O12 materials were improved. Among the series samples investigated, it was found that the Li4-xMgxTi5O12 (x = 0.1) has a good electrochemistry performance, the first discharge special capacity was 175.3, 148.6, 140.3, 123.6 mAh . g(-1) at 0.5 C, 1 C, 5 C, 10 C rate, respectively.

引用

页码：484 / 487

页数：4

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