Improved electrochemical properties of Li1.2Ni0.18Mn0.59Co0.03O2 by surface modification with LiCoPO4

被引：93

作者：

Liu, Bing ^{[1
]}

Zhang, Qian ^{[1
]}

He, Shici ^{[1
]}

Sato, Yuichi ^{[2
]}

Zheng, Junwei ^{[1
]}

Li, Decheng ^{[1
]}

机构：

[1] Soochow Univ, Inst Chem Power Sources, Suzhou 215006, Peoples R China

[2] Kanagawa Univ, Dept Appl Chem, Fac Engn, Kanagawa Ku, Yokohama, Kanagawa 2218686, Japan

来源：

ELECTROCHIMICA ACTA | 2011年 / 56卷 / 19期

关键词：

Li-ion battery; Cathode material; Li-rich layered solid solution; Improved electrochemical properties; Surface modification; ELECTRODE MATERIALS; CATHODE MATERIALS; CO ELECTRODES; NI; MN; BEHAVIOR;

D O I：

10.1016/j.electacta.2011.05.071

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Lithium-rich nickel-manganese-cobalt oxide, Li1.2Ni0.18Mn0.59Co0.03O2, prepared by spray-dry process, exhibits rapid capacity fade and poor rate capability. The surface of Li1.2Ni0.18Mn0.59Co0.03O2 can be modified with LiCoPO4 through co-precipitation method in order to improve its electrochemical properties. The resultant LiCoPO4 particles are in nano-scale and accumulate on the surface of the Li1.2Ni0.18Mn0.59Co0.03O2 particles. The surface modification by LiCoPO4 is shown to significantly improve both the cyclic performance and the rate capability of Li1.2Ni0.18Mn0.59Co0.03O2. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：6748 / 6751

页数：4

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