Template-free synthesis of mesoporous spinel lithium titanate microspheres and their application in high-rate lithium ion batteries

被引：125

作者：

Tang, Yufeng ^{[1
]}

Yang, Li ^{[1
]}

Qiu, Zheng ^{[1
]}

Huang, Jianshu ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Chem & Chem Technol, Shanghai 200240, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2009年 / 19卷 / 33期

基金：

国家高技术研究发展计划(863计划);

关键词：

LI4TI5O12; TIO2; PERFORMANCE; INSERTION; NANOWIRE; ANATASE; SPHERES; CELLS;

D O I：

10.1039/b907480e

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：

Mesoporous spinel lithium titanate Li4Ti5O12 microspheres were prepared by template-free hydrothermal process in ethanol-water mixed solution and subsequent heat treatment. The role of ethanol helps the formation of a mesoporous structure during the hydrothermal process. A mechanism analogous to the Kirkendall effect was proposed to account for the template-free formation of these mesoporous nanostructures. As anode materials for high-rate lithium ion battery, the Li4Ti5O12 mesoporous spheres exhibited superior high-rate performance of 114 mA h g(-1) at 30C and good capacity retention of 125 mA h g(-1) after 200 cycles at 20C, which indicates promising application in high-rate lithium ion batteries.

引用

页码：5980 / 5984

页数：5

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