| 高温固相法制备Li4Ti5O12负极材料及电化学性能研究 |
| |
| 引用本文： | 韩恩山,张俊平,朱令之,靳素芳.高温固相法制备Li4Ti5O12负极材料及电化学性能研究[J].电源技术,2011,35(6):656-659. |
| |
| 作者姓名： | 韩恩山 张俊平 朱令之 靳素芳 |
| |
| 作者单位： | 河北工业大学化工学院应用化学系; |
| |
| 摘 要： | 固相法制备Li4Ti5O12中,受扩散控制,煅烧温度和煅烧时间对产物性能有显著影响。着重探讨两者对Li4Ti5O12材料电化学性能的影响,找出最佳的反应条件。利用XRD、SEM、恒流充放电、电化学阻抗(EIS)、循环伏安(CV)等分析方法研究了材料的结构、形貌和电化学性能。结果表明,最佳反应条件为:煅烧温度850℃,煅烧时间16h时,可以制备出性能良好的纯相Li4Ti5O12材料。在1-2.5V进行充放电,在0.1C下,首次放电比容量达到180mAh/g,接近理论比容量,在0.2、0.5、1.0C下循环20次后,比容量几乎没有衰减,稳定在155、140、110mAh/g,表现出良好的循环性能。
|
| 关 键 词： | 高温固相法 Li4Ti5O12 负极材料 煅烧温度 煅烧时间 |
Preparation and electrochemical performance of Li_4Ti_5O_(12) anode material by high-temperature solid-state method |
| |
| HAN En-shan,ZHANG Jun-ping,ZHU Ling-zhi,JIN Su-fang.Preparation and electrochemical performance of Li_4Ti_5O_(12) anode material by high-temperature solid-state method[J].Chinese Journal of Power Sources,2011,35(6):656-659. |
| |
| Authors: | HAN En-shan ZHANG Jun-ping ZHU Ling-zhi JIN Su-fang |
| |
| Affiliation: | HAN En-shan,ZHANG Jun-ping,ZHU Ling-zhi,JIN Su-fang(Department of Applied Chemistry,School of Chemical Engineering and Technology,Hebei University of Technology,Tianjin 300130,China) |
| |
| Abstract: | During the preparation of Li4Ti5O12 by solid-state method,under the control of diffusion,the reaction temperature and time have very important influence on the performance of the product.In this paper,the influence of calcination temperature and time on the electrochemical properties of Li4Ti5O12 was discussed,and the optimal reaction condition was found out.The structure,morphology and electrochemical performance of Li4Ti5O12 were characterized by XRD,SEM,constant current charge and discharge,electrochemic... |
| |
| Keywords: | high-temperature solid-state Li4Ti5O12 anode material calcination temperature calcination time |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
