Synthesis and characterization of spherical morphology [Ni0.4Co0.2Mn0.4]3O4 materials for lithium secondary batteries

被引：20

作者：

Oh, Sung Woo

Park, Sang-Ho

Amine, K.

Sun, Yang-Kook ^{[1
]}

机构：

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

[2] Argonne Natl Lab, Argonne, IL 60439 USA

来源：

JOURNAL OF POWER SOURCES | 2006年 / 160卷 / 01期

关键词：

lithium secondary batteries; spray pyrolysis; positive materials; layered materials; electrochemical properties;

D O I：

10.1016/j.jpowsour.2006.01.023

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 morphology [Ni0.4Co0.2Mn0.4](3)O-4 materials have been synthesized by ultrasonic spray pyrolysis. The Li[Ni(0.4)ACo(0.2)Mn(0.4)]O-2 powders were prepared at various pyrolysis temperatures between 500 and 900 degrees C. The Li[Ni0.4Co0.2Mn0.4]O-2 material prepared at a pyrolysis temperature of 600 degrees C samples are exhibited excellent electrochemical cycling performance and delivered the highest discharge capacity at over 180 mAh g(-1) between 2.8 and 4.4 V. The structural, electrochemical, morphological property and thermal stability of the powders were characterized by X-ray diffraction (XRD), galvanostatic charge/discharge testing, scanning electron microscopy (SEM), and differential scanning calorimeter (DSC), respectively. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：558 / 562

页数：5

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