Surface composition and electrochemical behavior of LiNi1/3Co1/3Mn1/3O2 cathode material with copper additive

被引：11

作者：

Wang Jianhua ^{[1
]}

Chen Tiancai ^{[1
]}

机构：

[1] Kunming Univ Sci & Technol, Coll Mat Sci & Engn, Kunming 650093, Peoples R China

来源：

RARE METALS | 2012年 / 31卷 / 04期

基金：

中国国家自然科学基金;

关键词：

cathode; Li-ion battery; X-ray photoelectron spectroscopy (XPS); surface; electrochemical; HIGH-VOLTAGE; PERFORMANCE;

D O I：

10.1007/s12598-012-0527-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

LiNi1/3Co1/3Mn1/3O2 (NCM) cathode material containing copper was prepared by co-precipitation method. The material was characterized by X-ray photoelectron spectroscopy (XPS) and galvanostatic cycling. XPS data indicate that surface compositions of the samples containing copper are different from the bare NCM. Copper on surface of particles was enriched, while nickel and lithium content was reduced. The electrochemical performance of NCM was affected by the change of surface compositions. Cycling performance charged to the cutoff voltage of 4.6 V was improved by introducing copper into the material. The effects of copper content on electrochemical behaviors of NCM at 4.5 V were discussed.

引用

页码：397 / 401

页数：5

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