A new approach to improve the high-voltage cyclic performance of Li-rich layered cathode material by electrochemical pre-treatment

被引：168

作者：

Ito, Atsushi ^{[1
]}

Li, Decheng ^{[1
]}

Ohsawa, Yasuhiko ^{[2
]}

Sato, Yuichi ^{[1
]}

机构：

[1] Kanagawa Univ, Fac Engn, Dept Appl Chem, Kanagawa Ku, Yokohama, Kanagawa 2218686, Japan

[2] Nissan Motor Co Ltd, Nissan Res Ctr, Yokohama, Kanagawa 2378523, Japan

来源：

JOURNAL OF POWER SOURCES | 2008年 / 183卷 / 01期

关键词：

Li-ion battery; cathode material; Li[Ni0.17Li0.2Co0.07Mn0.56]O-2; improved high-voltage cyclic performance; pre-cycled treatment;

D O I：

10.1016/j.jpowsour.2008.04.086

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：

Lithium-rich nickel-manganese-cobalt oxide, Li[Ni0.17Li0.2Co0.07Mn0.56]O-2, was prepared by a co-precipitation method, and its cyclic behavior at a high potential was investigated. The as-prepared material shows a rapid capacity fading in its initial several cycles when it was operated above 4.5 V, which could be significantly improved through a pre-cycling treatment. Its reversible capacity in the range of 4.8-2 V could be increased from 200 to 250 mAh g(-1) after 50 cycle through a stepped pre-cycling treatment. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：344 / 346

页数：3

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