Corresponding Author

Jian-hua WANG(wjianna@163.com)


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


LiNi1/3Co1/3Mn1/3O2, coating, surface, lithium ion battery

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