Surface changes on LiNi0.8Co0.2O2 particles during testing of high-power lithium-ion cells

被引：299

作者：

Abraham, DP

Twesten, RD

Balasubramanian, M

Petrov, I

McBreen, J

Amine, K

机构：

[1] Argonne Natl Lab, Div Chem Technol, Argonne, IL 60439 USA

[2] Univ Illinois, Ctr Microanal Mat, Urbana, IL 61801 USA

[3] Brookhaven Natl Lab, Div Mat & Chem Sci, Upton, NY 11973 USA

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2002年 / 4卷 / 08期

关键词：

lithium-ion; electron microscopy; LiNi0.8Co0.2O2; surface; bulk;

D O I：

10.1016/S1388-2481(02)00388-0

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

LiNi0.8Co0.2O2 particles from high-power lithium-ion cells were examined to determine material changes that result from accelerated aging tests. X-ray absorption spectroscopy (XAS) and transmission electron microscope (TEM) data indicated a LixNi1-xO-type layer on the particle surfaces. The greater thickness on particles from high-power fade cells indicate that these surface layers are a significant contributor to cathode impedance rise observed during cell tests. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：620 / 625

页数：6

共 17 条

[1]

ABRAHAM DP, UNPUB J POWER SOURCE

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