Synthesis and electrochemical properties of Li[Ni0.8Co0.1Mn0.1]O2 and Li[Ni0.8Co0.2]O2 via co-precipitation

被引：244

作者：

Kim, Myung-Hyoon

Shin, Ho-Suk

Shin, Dongwook

Sun, Yang-Kook ^{[1
]}

机构：

[1] Hanyang Univ, Dept Chem Engn, Ctr Informat & Commun Mat, Seoul 133791, South Korea

[2] Hanyang Univ, Div Mat Sci & Engn, Ctr Informat & Commun Mat, Seoul 133791, South Korea

来源：

JOURNAL OF POWER SOURCES | 2006年 / 159卷 / 02期

关键词：

cathode material; co-precipitation; thermal stability; lithium secondary batteries;

D O I：

10.1016/j.jpowsour.2005.11.083

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：

Spherical Li[Ni0.8Co0.2-xMnx]O-2 (x=0, 0.1) with phase-pure and well-ordered layered structure have been synthesized by heat-treatment of spherical [Ni0.8Co0.2-xMnx](OH)(2) and (LiOHH2O)-H-. precursors. The structure, morphology, electrochemical properties, and thermal stability of Li[Ni0.8Co0.2-xMnx]O-2 (x = 0, 0.1) were studied. The average particle size of the powders was about 10-15 mu m and the size distribution was narrow due to the homogeneity of the metal hydroxide [Ni0.8Co0.2-xMnx](OH)(2) (x = 0, 0. 1). The Li[Ni0.8Co0.2-xMnx]O-2 (x = 0, 0.1) delivered a discharge capacity of 197-202 mAh g(-1) and showed excellent cycling performance. Compared to Li[Ni0.8Co0.2]O-2, Li[Ni0.8Co0.1Mn0.1]O-2 exhibited greater thermal stability resulting from improved structural stability due to Mn substitution. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：1328 / 1333

页数：6

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