Remarkable improvement in cell safety for Li[Ni0.5Co0.2Mn0.3]O2 coated with LiFePO4

被引：35

作者：

Kim, W. -S. ^{[2
]}

Kim, S. -B. ^{[2
]}

Jang, I. C. ^{[1
]}

Lim, H. H. ^{[1
]}

Lee, Y. S. ^{[1
]}

机构：

[1] Chonnam Natl Univ, Fac Appl Chem Engn, Kwangju 500757, South Korea

[2] Dajung EM Co Ltd, Inchon 405820, South Korea

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 492卷 / 1-2期

关键词：

Safety performance; Li[Ni0.5Co0.2Mn0.3]O-2; LiFePO4; coating; Cathode material; Lithium secondary battery; LITHIUM-ION BATTERIES; CATHODE MATERIALS; LICOO2; PERFORMANCE;

D O I：

10.1016/j.jallcom.2009.12.034

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：

Li[Ni0.5Co0.2Mn0.3]O-2 has been synthesized by a co-precipitation method and the surface coated with nanosized LiFePO4 particles. Structural characterizations were performed by X-ray diffraction (XRD) studies and transmission electron microscopy (TEM) utilized to ensure the coating. A homemade aluminum pouch cell was assembled and studied at different C rates (0.5-20 C). At high current rates, the cell presented very stable discharge behavior. During the safety rest, great enhancement of thermal and over-charge behavior was observed for LiFePO4-coated Li[Ni0.5Co0.2Mn0.3]O-2 material. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.

引用

页码：L87 / L90

页数：4

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