The effect of zirconium oxide coating on the lithium nickel cobalt oxide for lithium secondary batteries

被引：38

作者：

Lee, Sang Myoung

Oh, Si Hyoung

Cho, Won Il

Jang, Ho

机构：

[1] Korea Univ, Coll Engn, Dept Adv Mat Engn, Seoul 136713, South Korea

[2] Econano Res Ctr, Seoul 136791, South Korea

来源：

ELECTROCHIMICA ACTA | 2006年 / 52卷 / 04期

关键词：

LiNi0.8Co0.2O2; zirconia; coating; lithium ion batteries; cathode;

D O I：

10.1016/j.electacta.2006.01.079

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The electrochemical properties of LiNi0.8Co0.2O2 coated with ZrO2 by three different coating processes (ball-milling, sol-gel method, simple grinding) were investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), and electrochemical impedance spectroscopy (EIS). Results showed that the ZrO2 coating significantly improved the capacity retention of the cathode by suppressing the impedance growth at the interface between electrodes and electrolyte and the best cyclability was obtained in the case of employing the simple grinding for the ZrO2 coating. On the other hand, the initial capacities of the ZrO2-coated LiNi0.8Co0.2O2 cathode were slightly decreased. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：1507 / 1513

页数：7

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