Effects of dopant on the electrochemical properties of Li4Ti5O12 anode materials

被引：92

作者：

Hao, Yan-Jing

Lai, Qiong-Yu ^{[1
]}

Lu, Ji-Zheng

Ji, Xiao-Yang

机构：

[1] Sichuan Univ, Coll Chem, Chengdu 610064, Peoples R China

[2] Sichuan Univ, Analyt & Testin Ctr, Chengdu 610064, Peoples R China

来源：

IONICS | 2007年 / 13卷 / 05期

关键词：

anode; charge/discharge; lithium-ion battery; doping; electrochemical performance;

D O I：

10.1007/s11581-007-0111-1

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 spinet-type Li3.97M0.1Ti4.94O12 (M=Mn, Ni, Co) and Li(4-x/3)CrxTi(5-2x/3)O12(x=0.1, 0.3, 0.6, 0.9, 1.5) were systematically investigated. Charge-discharge cycling were performed at a constant current density of 0.5 mA/cm(2) between the cut-off voltages of 3.0 and 1.0 V, the experimental results showed that Cr3+ dopant improved the reversible capacity and cycling stability over the pristine Li4Ti5O12. The substitution of the Mn3+ and Ni3+ slightly decreased the capacity of the Li4Ti5O12. Dopants such as Co3+ to some extent worsened the electrochemical performance of the Li4Ti5O12.

引用

页码：369 / 373

页数：5

共 26 条

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