Lattice vibrations of materials for lithium rechargeable batteries - II. Lithium extraction-insertion in spinel structures

被引:34
作者
Julien, CM [1 ]
Camacho-Lopez, MA [1 ]
机构
[1] Univ Paris 06, CNRS UMR 7603, Lab Milieux Desordonnes & Heterogenes, F-75252 Paris 05, France
来源
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2004年 / 108卷 / 03期
关键词
lithium-manganese oxide; Raman spectroscopy; FTIR spectroscopy; lattice dynamics; lithium batteries;
D O I
10.1016/j.mseb.2003.09.028
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Lithiated spinel manganese oxides with various amounts of lithium have been prepared through solid-state reaction and electrochemical intercalation and deintercalation. Local structure of the samples are studied using Raman scattering and Fourier transform infrared spectroscopy. We report vibrational spectra of lithiated manganese oxides LixMn2O4 as a function of lithium concentration in the range 0.1 less than or equal to x less than or equal to 2.0. Raman and Fourier transform infrared (FTIR) spectral results indicated multiple-phase reactions when the lithium content is modified in the spinel lattice. Lattice dynamics of lithiated spinel manganese oxides have been interpreted using either a classical factor-group analysis or a local environment model. The structural modifications have been studied on the basis of vibrations of LiO4 tetrahedral and MnO6 octahedral units when Li/Mn less than or equal to 0.5, and LiO4, LiO6, and MnO6 structural units when Li/Mn > 0.5. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码:179 / 186
页数:8
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