Thermal reactivity study of spinel lithium titanium oxide material for lithium ion battery by thermal and spectral analysis

被引：5

作者：

Yu, Hai-Ying ^{[1
,2
]}

Zhang, Ding ^{[3
]}

Zhu, Zhi ^{[1
]}

Lu, Qi ^{[1
]}

机构：

[1] Peking Univ, Coll Chem & Mol Engn, Inst Appl Chem, New Energy Mat & Technol Lab, Beijing 100871, Peoples R China

[2] Inner Mongolia Univ Technol, Coll Chem Engn, Inst Coal Convers & Cycl Econ, Hohhot 010051, Inner Mongolia, Peoples R China

[3] Taiyuan Univ Technol, Coll Chem & Chem Engn, Dept Appl Chem, Taiyuan 030024, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2014年 / 257卷

基金：

国家高技术研究发展计划(863计划);

关键词：

Lithium-ion secondary battery; Lithium titanate; Thermal reactivity; State of charge; ALL-SOLID-STATE; GRAPHITE ANODES; STABILITY; LI4TI5O12; ELECTROLYTE; PERFORMANCE; SAFETY; CALORIMETRY;

D O I：

10.1016/j.jpowsour.2014.01.045

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：

This paper reports the study on thermal reactivity of spinet lithium titanium oxide (Li4Ti5O12) material. Thermalgravimetry and Differential scanning calorimetry (TG/DSC) is used to investigate the relevant profiles of Li4Ti5O12 and Li7Ti5O12 electrodes. TG results show Li7Ti5O12 electrode material has higher thermal weight loss, which is 26.7% below 600 degrees C, significantly larger than that of 20.4% for Li4Ti5O12 electrode. Moreover, the onset exothermal temperature for Li7Ti5O12 electrode material is lower and total exothermal energy is higher. Fourier transform infrared (FT-IR) spectroscopy confirms that more C=O group containing compound are generated on Li7Ti5O12 electrode. One species can be decomposed below 460 C, and the other one can be decomposed below 600 degrees C. It is conclude that the aforementioned two species leads to higher thermal reaction of Li7Ti5O12 electrode. (C) 2014 Published by Elsevier B.V.

引用

页码：96 / 101

页数：6

共 27 条

[1] Low temperature performance of nanophase Li4Ti5O12 [J].