Combustion synthesis of high-performance Li4Ti5O12 for secondary Li-ion battery

被引：128

作者：

Yuan, Tao ^{[1
]}

Cai, Rui ^{[1
]}

Wang, Ke ^{[1
]}

Ran, Ran ^{[1
]}

Liu, Shaomin ^{[2
]}

Shao, Zongping ^{[1
]}

机构：

[1] Nanjing Univ Technol, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Peoples R China

[2] Univ Queensland, Sch Engn, ARC, Ctr Funct Nanomat, Brisbane, Qld 4072, Australia

来源：

CERAMICS INTERNATIONAL | 2009年 / 35卷 / 05期

关键词：

Li4Ti5O12; Combustion synthesis; Cellulose; Rate capacity; CARBON-COATED LI4TI5O12; ALL-SOLID-STATE; ELECTROCHEMICAL PROPERTIES; ANODE MATERIAL; NEGATIVE ELECTRODE; LITHIUM BATTERIES; SPINEL OXIDES; TIO2; ANATASE; ADSORPTION; COMPOSITE;

D O I：

10.1016/j.ceramint.2008.10.010

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Spinel Li4Ti5O12 was synthesized by a simple glycine-nitrate auto-combustion by applying aqueous medium and constricting the reactions in the pores of cellulose fibers. The products from the auto-combustion and further calcination at various temperatures were characterized by XRD, SEM, BET surface area and TEM examinations. Pure phase and well-crystallized nano-Li4Ti5O12 oxides were obtained at a calcination temperature of 700 degrees C or higher. The 700 degrees C calcined one shows the best and high electrochemical performance, which reached a capacity of similar to 125 mAh/g at 10 C discharge rate with fairly stable cycling performance even at 40 degrees C. Electrochemical impedance spectroscopy tests demonstrated that the surface reaction kinetics of Li4Ti5O12 was improved significantly with the increase of its electronic conductivity. (c) 2008 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：1757 / 1768

页数：12

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