Abstract
The surface of LiNi1/3Co1/3Mn1/3O2 particles were modified by ZnO. Surface structure and electrochemical properties of the coated materials were investigated by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and electrochemical tests. The results show that a ZnO coating affects the surface composition of LiNi1/3Co1/3Mn1/3O2 particles. The surface contents of nickel and manganese increase with the amount of ZnO coating. ZnO can react with LiNi1/3Co1/3Mn1/3O2 and a complex oxide is formed during the heat-treatment at above 400 oC. The electrochemical studies suggest that a ZnO coating hinder the electrochemical reactions near 3.6 V for pristine sample. The initial columbic efficiency is significantly enhanced by coating LiNi1/3Co1/3Mn1/3O2 with 2% (by mass) ZnO, which delivers high discharge capacity and shows excellent capacity retention at 55 oC/0.5C.
Graphical Abstract
Keywords
LiNi1/3Co1/3Mn1/3O2, coating, surface, lithium ion battery
Publication Date
2014-02-25
Online Available Date
2014-02-24
Revised Date
2013-01-19
Received Date
2012-10-24
Recommended Citation
Chang-wei LIU, Yu WANG, Yu-zhong GUO, Lu-lu DAN, Jian-hua WANG.
Surface Structure and Electrochemical Performance of ZnO Coated LiNi1/3Co1/3Mn1/3O2[J]. Journal of Electrochemistry,
2014
,
20(1): 60-65.
DOI: 10.13208/j.electrochem.121024
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol20/iss1/11
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