Effects of dopant on the electrochemical performance of Li4Ti5O12 as electrode material for lithium ion batteries

被引：156

作者：

Huang, Shahua ^{[1
]}

Wen, Zhaoyin ^{[1
]}

Zhu, Xiujian ^{[1
]}

Lin, Zuxiang ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, Grad Sch, Shanghai 200050, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2007年 / 165卷 / 01期

基金：

中国国家自然科学基金;

关键词：

lithium ion battery; anode materials; spinel-type; Li4Ti5O12;

D O I：

10.1016/j.jpowsour.2006.12.010

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effects of dopant on the electrochemical properties of spinel-type Li3.95M0.15Ti4.9O12 (M = Al, Ga, Co) and Li3.9Mg0.1Al0.15Ti4.85O12 were systematically investigated. Charge-discharge cycling were performed at a constant current density of 0.15 mA cm(-2) between the cut-off voltages of 2.3 and 0.5 V, the experimental results showed that Al3+ dopant greatly improved the reversible capacity and cycling stability over the pristine Li4Ti5O12. The substitution of the Ga3+ slightly increased the capacity of the Li4Ti5O12, but did not essentially alleviate the degradation of cycling stability. Dopants such as Co3+ and Mg2+ to some extent worsened the electrochemical performance of the Li4Ti5O12. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：408 / 412

页数：5

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