Aging of LiNi1/3Mn1/3Co1/3O2 cathode material upon exposure to H2O

被引：86

作者：

Zhang, Xiaoyu ^{[1
,3
]}

Jiang, W. J. ^{[2
]}

Zhu, X. P. ^{[2
]}

Mauger, A. ^{[1
]}

Qilu ^{[3
]}

Julien, C. M. ^{[4
]}

机构：

[1] Univ Paris 06, Inst Mineral & Phys Milieux Condensee, 140 Rue Lourmel, F-75015 Paris, France

[2] CITIC Guoan Mengguli Power Source Technol Co Ltd, Beijing 102200, Peoples R China

[3] Peking Univ, Coll Chem & Mol Engn, Dept Appl Chem, Beijing 100871, Peoples R China

[4] Univ Paris 06, PECSA, F-75005 Paris, France

来源：

JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 11期

关键词：

Li-ion batteries; Lamellar compounds; Surface aging; SOLID-STATE CHEMISTRY; ELECTROCHEMICAL PROPERTIES; LINI0.8CO0.15AL0.05O2; CATHODES; LITHIUM INTERCALATION; ION; SURFACE; LI; PERFORMANCE; ELECTRODE; LICO1/3NI1/3MN1/3O2;

D O I：

10.1016/j.jpowsour.2011.02.009

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：

LiNi1/3Mn1/3Co1/3O2 compound was successfully synthesized by the co-precipitation method. The effect of H2O on LiNi1/3Mn1/3Co1/3O2 in humid atmosphere was investigated by structural, magnetic and electrochemical analysis, and Raman spectroscopy. The consequence is that immersion of LiNi1/3Mn1/3Co1/3O2 to H2O and exposure of LiNi1/3Mn1/3Co1/3O2 to humid atmosphere (ambient atmosphere, 20 degrees C, 50% relative humidity) led to a rapid attack that manifests itself by the delithiation of the surface layer of the particles and the concomitant formation of LiOH and Li-2 CO3 at the surface. This aging process occurred during the first few minutes, then it is saturated, and the thickness of the surface layer at saturation is 10 nm. After aging, an initial discharge capacity of 139 mAh/g was delivered at 1C-rate in the cut-off voltage of 3.0-4.3 V. About 95% of its initial capacity was retained after 30 cycles. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：5102 / 5108

页数：7

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