Preparation and characterization of Cr-doped LiMnO2 cathode materials by Pechini's method for lithium ion batteries

被引：26

作者：

Pang, W. K. ^{[1
]}

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

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

Wu, S. H. ^{[1
]}

机构：

[1] Tatung Univ, Dept Mat Engn, Taipei 104, Taiwan

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2013年 / 139卷 / 01期

关键词：

Sol-gel growth; Powder diffraction; XAFS (EXAFS and XANES); Crystallography; Electrochemical properties; CHEMICAL BONDING NATURE; ORTHORHOMBIC LIMNO2; LAYERED LIMNO2; HYDROTHERMAL SYNTHESIS; MANGANESE OXIDE; STACKING-FAULTS; SUBSTITUTION; STABILITY; ELECTRODE; O-LIMNO2;

D O I：

10.1016/j.matchemphys.2013.01.030

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

o-LiMnO2 and LiMn1-xCrxO2 (x = 0.05 and 0.1) powders are synthesized via Pechini's method. Crystalline structure, surface morphology, and electrochemical properties of the prepared powders are investigated by XRD, SEM, cyclic voltammetric and capacity retention studies. From results, it is found that a small amount of Cr-doping into LiMnO2 cathode can not only lead to a topographic change from orthorhombic to monoclinic geometry and particle size reduction, but also improve cycling performance and reversible capacity. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：241 / 246

页数：6

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