Effect of rare earth elements doping on structure and electrochemical properties of LiNi1/3Co1/3Mn1/3O2 for lithium-ion battery

被引：79

作者：

Ding, Yanhuai ^{[1
]}

Zhang, Ping

Jiang, Yong

Gao, Deshu

机构：

[1] Xiangtan Univ, Coll Civil Engn & Mech, Xiangtan 411105, Peoples R China

[2] Xiangtan Univ, Inst Fundamental Mech & Mat Engn, Xiangtan 411105, Peoples R China

[3] Xiangtan Univ, Coll Chem, Xiangtan 411105, Peoples R China

来源：

SOLID STATE IONICS | 2007年 / 178卷 / 13-14期

基金：

中国国家自然科学基金;

关键词：

cathode material; doping; rare earth element; cycling performance; charge-transfer resistance;

D O I：

10.1016/j.ssi.2007.04.012

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：

A series of cathode materials for lithium-ion batteries with the formula Li[Ni1/3Co1/3Mn1/3](1-x)RexO2(Re=La, Ce, Pr) have been synthesized using a sol-gel method with citric acid as chelating agent. The effect of rare earth elements doping on the structure and electrochemical properties of LiNi1/3Co1/3Mn1/3O2 were investigated by XRD, charge-discharge experiments and EIS. The results show that the discharge capacity and cycling performance of LiNi1/3Co1/3Mn1/3O2 have been greatly improved with rare earth elements doping. Characterization of EIS reveals that the increase of charge-transfer resistance during cycling has been suppressed successfully by rare earth elements doping. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：967 / 971

页数：5

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