Surface analysis of lithium manganese oxides synthesized by the melt-impregnation method has been made by x-ray photoelectron spectroscopy. These results revealed the change in the average oxidation state of Mn cations upon lithium substitution in Li1+deltaMn2-deltaO4 spinels. Studies of the local structure characterized by Raman scattering show the Mn-O bonding evolution as a function of the replacement of manganese cations. Modification in the trigonal distortion of MnO6 octahedra is evidenced by insertion of lithium ions into the octahedral holes of the [B-2]O-4 spinel framework. Copyright (c) 2005 John Wiley S Sons, Ltd.
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Jiangsu Univ, Sch Mat Sci & technol, Zhenjiang, Peoples R China
Jiangsu Genergy Battery Co Ltd, Yangzhong, Peoples R ChinaJiangsu Univ, Sch Mat Sci & technol, Zhenjiang, Peoples R China
Liu, Yunjian
Lv, Jun
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Jiangsu Univ, Sch Mat Sci & technol, Zhenjiang, Peoples R China
Jiangsu Genergy Battery Co Ltd, Yangzhong, Peoples R ChinaJiangsu Univ, Sch Mat Sci & technol, Zhenjiang, Peoples R China
Lv, Jun
Fei, Yang
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Jiangsu Univ, Sch Mat Sci & technol, Zhenjiang, Peoples R China
Jiangsu Genergy Battery Co Ltd, Yangzhong, Peoples R ChinaJiangsu Univ, Sch Mat Sci & technol, Zhenjiang, Peoples R China
Fei, Yang
Huo, Xiangdong
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Jiangsu Univ, Sch Mat Sci & technol, Zhenjiang, Peoples R ChinaJiangsu Univ, Sch Mat Sci & technol, Zhenjiang, Peoples R China
Huo, Xiangdong
Zhu, Yuezhong
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Jiangsu Genergy Battery Co Ltd, Yangzhong, Peoples R ChinaJiangsu Univ, Sch Mat Sci & technol, Zhenjiang, Peoples R China