| Al2O3修饰改进Li1+xV3O8的电化学性能 |
| |
| 引用本文： | 丁燕怀,张平,姜勇.Al2O3修饰改进Li1+xV3O8的电化学性能[J].材料科学与工程学报,2008,26(1):83-85,109. |
| |
| 作者姓名： | 丁燕怀 张平 姜勇 |
| |
| 作者单位： | 湘潭大学土木工程与力学学院,基础力学与材料工程研究所,湖南,湘潭,411105;湘潭大学土木工程与力学学院,基础力学与材料工程研究所,湖南,湘潭,411105;湘潭大学土木工程与力学学院,基础力学与材料工程研究所,湖南,湘潭,411105 |
| |
| 摘 要： | 采用高温固相法合成了Al2O3修饰的Li1 xV3O8自正极材料,用X射线衍射、恒电流充放电实验、循环伏安法等对材料的结构和电化学性能进行了表征.结果表明Al2O3修饰使得Li1 xV3O8材料的层间距离增大,材料的导电性能和电化学反应的可逆性提高.当Al2O3含量为6mol%时,Li1 xV3O8表现出良好的循环性能,首次放电容量达到219mAh/g,10次循环后容量保持率为92.3%.
|
| 关 键 词： | 正极材料 Li1+xV3O8 层间距离 电导率 |
| 文章编号： | 1673-2812（2008）01-0083-04 |
| 收稿时间： | 2007-02-03 |
| 修稿时间： | 2007-04-05 |
Improved Electrochemical Properties of Li1+xV3O8 Cathode Materials Modified by Al2O3 |
| |
| DING Yan-huai,ZHANG Ping,JIANG Yong.Improved Electrochemical Properties of Li1+xV3O8 Cathode Materials Modified by Al2O3[J].Journal of Materials Science and Engineering,2008,26(1):83-85,109. |
| |
| Authors: | DING Yan-huai ZHANG Ping JIANG Yong |
| |
| Abstract: | The cathode material Li1+x V3O8 modified by Al2O3 has been synthesized by solid-state reaction. The structure and electrochemical properties were characterized by X-ray diffraction, galvanostatic charge/discharge experiments and cyclic voltammetry. The results reveal that interlayer distance and electronic conductivity of Li1+xV3O8 has been improved by Al2O3 modification. Li1+x V3O8 contained 6mol % Al2O3 showed excellent cyclic performance. The first discharge capacity was 219mAh/g and the capacity retention rate was 92.3% up to 10 cycles. |
| |
| Keywords: | cathode material Li1 xV3O8 interlayer distance electronic conductivity |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
