Effects of ZrO2 Coating on LiNi1/3Mn1/3Co1/3O2 Particle with Microwave Pyrolysis

被引：0
作者：
Jiang Du
Zhengfu Zhang
Jinhui Peng
Yamei Han
Yi Xia
Shaohua Ju
Shenghui Guo
Chongyan Leng
Guo Chen
Lei Xu
Junsai Sun
Hongge Yan
机构：
[1] Kunming University of Science and Technology,Faculty of Materials Science and Engineering
[2] National Local Joint Engineering Laboratory of Engineering Applications of Microwave Energy and Equipment Technology,Key Laboratory of Unconventional Metallurgy, Ministry of education
[3] Kunming University of Science and Technology,College of Materials Science and Engineering
[4] Hunan University,undefined
来源：
Journal of Materials Engineering and Performance | 2014年 / 23卷
关键词：
cathode; electrochemical properties; LiNi; Co; Mn; O; lithium-ion battery; ZrO; coating;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this paper, ZrO2-coated LiNi1/3Mn1/3Co1/3O2 is successfully prepared by the microwave pyrolysis method. The structure and electrochemical properties of the ZrO2-coated LiNi1/3Co1/3Mn1/3O2 are investigated using x-ray diffraction, AC impedance, and charge/discharge tests, indicating that the lattice structure of LiNi1/3Co1/3Mn1/3O2 is unchanged after the coating but the cycling stability is improved. As the coating amount is 2 wt.%, initial capacity of the coated LiNi1/3Co1/3Mn1/3O2 decreases slightly. However, the cycling stability increases remarkably over the cut-off voltages of 2.75~4.3 V and the capacity retention reaches 93.1% after 50 cycles. Electrochemical impedance spectra results show that the increase of charge transfer resistance during cycling is suppressed significantly by coating with ZrO2.
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页码：2159 / 2163
页数：4
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