Porous Li4Ti5O12 anode material synthesized by one-step solid state method for electrochemical properties enhancement

被引：36
|
作者：
Lin, Chih-Yuan [1 ]
Duh, Jenq-Gong [1 ]
机构：
[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu, Taiwan
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 08期
关键词：
Lithium ion battery; Anode material; Porous Li4Ti5O12; INSERTION MATERIAL; SPINEL LI4TI5O12; LITHIUM; PERFORMANCE; STORAGE; TIO2;
D O I：
10.1016/j.jallcom.2010.12.160
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：
A porous Li4Ti5O12 anode material was successfully synthesized from mixture of LiCl and TiCl4 with 70 wt% oxalic acid by a modified one-step solid state method. The anode material Li4Ti5O12 exhibited a cubic spinet structure and only one voltage plateau occurred around 1.5 V. The initial capacity of porous Li4Ti5O12 was 167 and 133 mAhg(-1) at 0.5 and 1C charge/discharge rate, respectively, and the capacity retention maintained above 98% after 200 cycles. The porous Li4Ti5O12 structure showed promising rate performance with a capacity of 70 mAh g(-1) at charge/discharge 10C rate after 200 cycles. It was demonstrated that the porous structure could withstand 50C charge/discharge rate and exhibited excellent cycling stability. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：3680 / 3685
页数：6
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