Electrochemical Performance of Li1.2Mn0.54Ni0.13Co0.13O2 Lithium-enriched Cathode Materials Coated with Al2O3

被引：0
|
作者：
Zuo C. [1 ]
Du Y. [1 ]
Zhang P. [1 ]
Wang Y. [1 ]
Cao H. [1 ]
机构：
[1] School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing
来源：
Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research | 2020年 / 34卷 / 08期
关键词：
Al[!sub]2[!/sub]O[!sub]3[!/sub] coating; Cathode material; Electrochemical performance; Inorganic non-metallic materials; Li[!sub]1.2[!/sub]Mn[!sub]0.54[!/sub]Ni[!sub]0.13[!/sub]Co[!sub]0.13[!/sub]O[!sub]2[!/sub;
D O I：
10.11901/1005.3093.2019.579
中图分类号：
学科分类号：
摘要：
Li1.2Mn0.54Ni0.13Co0.13O2 lithium-rich manganese-based cathode materials were prepared by sol-gel method, then coated with Al2O3 by uniform precipitation method, which further characterized by means of XRD, TEM and electrochemical properties analysis. Results show that the coated material still has the layered structure as its original status, Al2O3 was uniformly coated on the surface of the Li1.2Mn0.54Ni0.13Co0.13O2 particles to form a nano-scale coating. The initial discharge capacity of the Li1.2Mn0.54Ni0.13Co0.13O2 powder coated with 0.7% Al2O3 was 251.3 mAh/g under the condition of 0.1 C and 2.0~4.8 V. The first coulombic efficiency is 76.1%, and the capacity retention rate is 92.9% after 100 cycles., and the coating also effectively suppresses the voltage decay during the cycle. The proper amount of Al2O3 coating can effectively improve the electrochemical performance of the cathode material. © 2020, Editorial Office of Chinese Journal of Materials Research. All right reserved.
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页码：621 / 627
页数：6
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