Synthesis and electrochemical properties of high-density LiNi0.8Co0.2O2 for the lithium-ion-battery cathode

被引：9
|
作者：
Tang, Hong-Wei [1 ]
Zhu, Zhi-Hong [1 ]
Chang, Zhao-Rong [1 ]
Chen, Zhong-Jun [1 ]
Yuan, Xiao Zi [2 ]
Wang, Haijiang [2 ]
机构：
[1] Henan Normal Univ, Coll Chem & Environm Sci, Xinxiang 453007, Peoples R China
[2] Natl Res Council Canada, Inst Fuel Cell Innovat, Vancouver, BC V6T 1W5, Canada
来源：
ELECTROCHEMICAL AND SOLID STATE LETTERS | 2008年 / 11卷 / 03期
关键词：
D O I：
10.1149/1.2828199
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
LiNi0.8Co0.2O2 powder with a tap density of 3.23 g cm(-3) has been successfully prepared by a molten-salt synthesis method using a eutectic molten salt of 0.62LiNO(3)-0.38LiOH with a melting point of 175.7 degrees C and Ni0.8Co0.2(OH)(2), where the ratio of Li/(Ni + Cc) is controlled at 1. 1: 1. X-ray diffraction analysis has shown that this material has a well-developed layered structure. Charge-discharge tests have shown that an LiNi0.8Co0.2O2 cathode prepared at 800 degrees C has an initial discharge capacity as high as 163 mAh g(-1) and excellent capacity retention in the range of 3.0-4.3 V at a current density of 0.2 mA cm(-2). (c) 2008 The Electrochemical Society.
引用
收藏
页码：A34 / A37
页数：4
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