Performance improvement of LiCoO2 by molten salt surface modification

被引：34

作者：

Bai, Ying ^{[1
]}

Shi, Hongjun ^{[1
]}

Wang, Zhaoxiang ^{[1
]}

Chen, Liquan ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Lab Solid State Ion, Beijing 100080, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2007年 / 167卷 / 02期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

surface modification; molten salt; performance improvement; lithium ion batteries;

D O I：

10.1016/j.jpowsour.2007.02.036

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The surface of commercial LiCoO2 was modified by molten salt method. The structure and electrochemical and thermal performances of the MgCl2-treated LiCoO2 were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), differential scanning calorimetry (I)SQ, X-ray photoelectron spectroscopy and galvanostatic cycling. It is found that surface modification improves the structural and thermal stability as well as the rate performance of LiCoO2. These improvements were attributed to the formation of homogeneous solid solution on the surface of the LiCO02 particle. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：504 / 509

页数：6

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