Structural and electrochemical properties of layered Li[Ni0.5Mn0.5]1-xCoxO2 positive materials synthesized by ultrasonic spray pyrolysis method

被引：106

作者：

Oh, SW

Park, SH

Park, CW

Sun, YK ^{[1
]}

机构：

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

[2] Korea Elect Technol Inst, Pyeongtaek Si, South Korea

来源：

SOLID STATE IONICS | 2004年 / 171卷 / 3-4期

关键词：

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

D O I：

10.1016/j.ssi.2004.04.012

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 layered Li[Ni0.5Mn0.5](1-x)CoxO2 (0less than or equal toxless than or equal to0.33) powders have been synthesized by ultrasonic spray pyrolysis method. Single phase of Li[Ni(0.5)Nn(0.5)](1-x)CoxO2 could be prepared in 0less than or equal toxless than or equal to0.33 region. Structural and electrochemical properties of the Li[Ni0.5Mn0.5](1-x)CoxO2 materials were characterized by means of powder X-ray diffraction (XRD), Rietveld refinements, and galvanostatic charge/discharge test. The discharge capacity increased linearly with the increase of Co-substituted contents. Li[Ni0.4Mn0.4Co0.2]O-2 electrode delivered a high discharge capacity over 175 mA h g(-1) between 2.8 and 4.4 V with a good capacity retention. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：167 / 172

页数：6

共 20 条

[1]

Ammundsen B, 2001, ADV MATER, V13, P943, DOI 10.1002/1521-4095(200107)13:12/13<943::AID-ADMA943>3.0.CO

[2]

2-J

[3] Li(Ni1/3Co1/3Mn1/3)O2 as a suitable cathode for high power applications [J].