New concept of surface modification to LiCoO2

被引：42

作者：

Bai, Ying ^{[1
]}

Yin, Yanfeng ^{[2
]}

Liu, Na ^{[1
]}

Guo, Bingkun ^{[1
]}

Shi, Hongjun ^{[1
]}

Liu, Jianyong ^{[1
]}

Wang, Zhaoxiang ^{[1
]}

Chen, Liquan ^{[1
]}

机构：

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

[2] Henan Univ, Dept Phys, Inst Opt & Photoelectron Technol, Kaifeng 475001, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2007年 / 174卷 / 01期

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

surface modifications; additive; performance improvement; lithium ion batteries;

D O I：

10.1016/j.jpowsour.2007.09.023

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：

As the continuance of our series study on LiCoO2 surface modification, the complicated traditional surface coating method is replaced with simple addition of amorphous YPO4 and Al2O3 in commercial LiCoO2 or in commercial electrolyte based on our understanding to the improvement mechanism of surface modification. Comprehensive studies by X-ray photoelectron spectroscopy (XPS), gas chromatography and mass spectroscopy (GC-MS), inductively coupled plasma (ICP) and Fourier transformed infrared (FTIR) indicate that the products of spontaneous reaction between the additive and the LiPF6 based electrolyte are responsible for the performance improvements. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：328 / 334

页数：7

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