Synthesis and electrochemical properties of ZnO-coated LiNi0.5Mn1.5O4 spinel as 5 V cathode material for lithium secondary batteries

被引：250

作者：

Sun, YK ^{[1
]}

Lee, YS

Yoshio, M

Amine, K

机构：

[1] Hanyang Univ, Dept Chem Engn, Seoul 133791, South Korea

[2] Saga Univ, Dept Appl Chem, Saga 840, Japan

[3] Argonne Natl Lab, Div Chem Technol, Electrochem Technol Program, Argonne, IL 60439 USA

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2002年 / 5卷 / 05期

关键词：

D O I：

10.1149/1.1465375

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

ZnO-coated LiNi0.5Mn1.5O4 powders with excellent electrochemical cyclability and structural stability at elevated temperature have been synthesized by a sol-gel method. The structural degradation of the as-prepared LiNi0.5Mn1.5O4 and ZnO-coated LiNi0.5Mn1.5O4 electrodes before and after cycling in the 5 V region has been studied. The ZnO-coated LiNi0.5Mn1.5O4 electrode showed almost no capacity loss and retained its original cubic spinel structure after 50 cycles. We found that ZnO played an important role in reducing the HF content in the electrolyte solution. (C) 2002 The Electrochemical Society.

引用

页码：A99 / A102

页数：4

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