文章基本信息

标题：Effects of LiAlO2 coating on electrochemical performance of single-crystal LiNi0.6Co0.2Mn0.2O2
作者：Xue Bai ; Wen Li ; Lihui Zhang 等
期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：189
期号：3
页码：032050
DOI：10.1088/1755-1315/189/3/032050
语种：English
出版社：IOP Publishing
摘要：The LiAlO₂-coated commercial single-crystal LiNi_0.6Co_0.2Mn_0.2O₂ were synthesized by a solid-state method. The structure and electrochemical performance of the prepared materials were investigated by X-ray diffraction, scanning electron microscopy and galvanostatic charge-discharge tests. After LiAlO₂ coating, single-crystal LiNi_0.6Co_0.2Mn_0.2O₂ retains a well-developed layered structure and exhibits higher discharge capacities. The LiAlO₂-coated LiNi_0.6Co_0.2Mn_0.2O₂ sample delivers higher discharge capacities of 185.1, 176.3, 167.3, 156.9, and 138.9 mAh g⁻¹ at rates of 0.2C, 0.5C, 1C, 2C, and 5C, respectively. The results indicate that the LiAlO₂ coating could reduce the electrode polarization and enhance the rate capacities.