摘要
采用共沉淀法和成LiNi0.8Co0.2O2,探讨影响锂离子电池正极材料LiNi0.8Co0.2O2电化学性能及结构的因素.为了提高材料的电化学性能,对材料进行了掺杂改性的研究,分别掺入Al、Mn、Mg和Fe四种元素.通过在2.8～4.2V范围内的充放电测试分析,掺入Mn的正极材料LiNi0.8Co0.1Mn0.1O2具有最高的放电比容量以及最低的容量损失,其首次放电容量为168.84 mAh/g,十次循环后的放电容量为166.9 mAh/g.
The compound of LiNi0.8 Co0. 2O2 was synthesized by co-precipitation method. The effects of synthesis conditions on structure and electrochemical behavior of LiNi0.8 Co0. 2O2 were studied. In order to improve the electrochemical properties of the LiNi0.8 Co0. 2O2, a series of the doped compounds, LiNi0.8 Co0. 2O2 Mx O2 （ M = Al,Mn, Mg, Fe ） were synthesized. In the voltage range of 2.8 - 4.2 V, the maximum discharge specific capacity and the minimum capacity loss were obtained for the material doped with Mn, which has the initial discharge capacity of 168.84 mAh/g, and 166.9 mAh/g after 10 charge-discharge cycling.
出处
《吉林化工学院学报》
CAS
2013年第5期9-11,共3页
Journal of Jilin Institute of Chemical Technology
