Electrochemical Behavior of LiM0.25Ni0.25Mn1.5O4 as 5 V Cathode Materials for Lithium Rechargeable Batteries

被引：18
|
作者：
Rajakumar, S. [1 ]
Thirunakaran, R. [1 ]
Sivashanmugam, A. [1 ]
Yamaki, Jun-ichi [2 ]
Gopukumar, S. [1 ]
机构：
[1] Cent Electrochem Res Inst, Karaikkudi 630006, Tamil Nadu, India
[2] Kyushu Univ, Inst Mat Chem & Engn, Kasuga, Fukuoka 8168580, Japan
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2009年 / 156卷 / 03期
关键词：
SECONDARY BATTERIES; MANGANESE SPINELS; ION BATTERIES; LIMN2O4; INSERTION; LI; AL; STABILIZATION; MECHANISMS; OXIDES;
D O I：
10.1149/1.3071364
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Glycine-assisted sol-gel-synthesized multiple-doped spinels, LiMn0.25Ni0.25Mn1.5O4 (M = Cr, Fe, and Co) have been studied as 5 V cathode materials. The sol-gel technique provides homogencity, high purity, lower processing temperature, controlled particle size. and morphology. The synthesized samples were subjected to physical characterization studies. viz., thermogravimetric and differential thermal analysis. X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, and electrochemical charge-discharge studies. Galvanostatic charge-discharge studies of the samples reveal that LiFe0.25Ni0.25Mn1.5O4 using glycine as a chelating agent delivers a stable capacity of 120 mAh g(-1) even after 20 cycles when cycled between 3 and 5 V. (C) 2009 The Electrochemical Society.
引用
收藏
页码：A246 / A252
页数：7
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