Surface redox on Li[Ni1/3Mn1/3Co1/3]O2 characterized by in situ X-ray photoelectron spectroscopy and in situ Auger electron spectroscopy

被引：18

作者：

Tang, Ching-Yen ^{[1
]}

Feng, Lin ^{[1
]}

Haasch, Richard T. ^{[2
]}

Dillon, Shen J. ^{[1
,2
]}

机构：

[1] Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA

[2] Univ Illinois, Mat Res Lab, Urbana, IL 61801 USA

来源：

ELECTROCHIMICA ACTA | 2018年 / 277卷

基金：

美国国家科学基金会;

关键词：

LiNi1/3Mn1/3Co1/3O2; In situ AES; In situ XPS; Li-ion battery; CATHODE MATERIAL; LITHIUM BATTERIES; CAPACITY LOSSES; ION; DISSOLUTION; LIMN2O4; LIXCOO2; LINI1/3MN1/3CO1/3O2; ELECTROCHEMISTRY; PARTICIPATION;

D O I：

10.1016/j.electacta.2018.04.199

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

This work applies in situ Auger electron spectroscopy and X-ray photoelectron spectroscopy to the study of surface redox on Li[Ni1/3Mn1/3Co1/3]O-2 during charging and overcharging. We observe that all three transition metals are surface redox active, and that oxygen oxidation occurs for voltages above approximate to 4.2 V O-2 loss above approximate to 4.7 V, mediated by carbon redox, leads to partial reduction of the transition metals at the surface during overcharging. Published by Elsevier Ltd.

引用

页码：197 / 204

页数：8

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