Low temperature performance of nanophase Li4Ti5O12

被引：113

作者：

Allen, J. L. ^{[1
]}

Jow, T. R. ^{[1
]}

Wolfenstine, J. ^{[1
]}

机构：

[1] USA, Res Lab, Adelphi, MD 20783 USA

来源：

JOURNAL OF POWER SOURCES | 2006年 / 159卷 / 02期

关键词：

Li4Ti5O12; anode; Li-ion battery; low temperature; nanophase; NANOCRYSTALLINE LI4TI5O12; LITHIUM;

D O I：

10.1016/j.jpowsour.2005.12.039

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 low temperature electrochemical performances of 700 and 350 nm Li4Ti5O12 were compared. At high rate, room temperature and at low rate and low temperature (0, -10, -20 and -30 degrees C), the 350nm Li4Ti5O12 showed higher capacity than the 700nm Li4Ti5O12. This difference is proposed to result from the shorter diffusion lengths and higher number of lithium insertion sites in the 350 nm Li4Ti5O12 compared to the 700 nm Li4Ti5O12. However, at high rate and low temperature, a transition in performance was observed, that is, the 700 nm. material had higher capacity. At high rate and low temperature, it is proposed that interparticle contact resistance becomes rate limiting owing to the temperature dependence of this property and this accounts for the different behavior at low temperature and high rate. Published by Elsevier B.V.

引用

页码：1340 / 1345

页数：6

共 21 条

[1] An asymmetric hybrid nonaqueous energy storage cell [J].