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XPS and Raman spectroscopic characterization of LiMn2O4 spinels.

Abstract : 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+Mn2-O4 spinels. Studies of the local structure characterized by Raman scattering show the MnO 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 [B2]O4 spinel framework.
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https://hal.archives-ouvertes.fr/hal-00021446
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Submitted on : Tuesday, March 21, 2006 - 4:13:27 PM
Last modification on : Tuesday, December 15, 2020 - 4:02:46 AM

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C.V. Ramana, M. Massot, C.M. Julien. XPS and Raman spectroscopic characterization of LiMn2O4 spinels.. Surface and Interface Analysis, Wiley-Blackwell, 2005, 37, pp.412-416. ⟨10.1002/sia.2022⟩. ⟨hal-00021446⟩

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