Process optimization and electrochemical properties of lithium manganate cathode for rechargeable batteries

被引：27
|
作者：
Santander, N [1 ]
Das, SR [1 ]
Majumder, SB [1 ]
Katiyar, RS [1 ]
机构：
[1] Univ Puerto Rico, Dept Phys, Rio Piedras, PR 00931 USA
来源：
SURFACE & COATINGS TECHNOLOGY | 2004年 / 177卷
关键词：
LiMn2O4; cyclic voltammetry; X-ray diffraction;
D O I：
10.1016/j.surfcoat.2003.06.012
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The phase formation behavior and the electrochemical properties of chemical solution-derived LiMn2O4 (LMO) powders calcined in the temperature range of 400-850 degreesC for 1-15 h have been studied. It was found that the lattice parameters and the crystallite size increase, whereas the lattice strain decreases with the increase in calcination temperature. The cyclic voltammetry (CV) tests of these powders were performed in a test cell using Li metal foil as counter/reference electrode. Powders annealed at 700 degreesC for 15 h yielded best electrochemical performance. The characteristics of the CV plots were analyzed on the basis of phase purity, crystallite size and lattice strain of the calcined LMO powders. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码：60 / 64
页数：5
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