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X-ray Absorption Studies in Spinel-Type LiMn2O4

✍ Scribed by R.S. Liu; L.Y. Jang; J.M. Chen; Y.C. Tsai; Y.D. Hwang; R.G. Liu

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
201 KB
Volume
128
Category
Article
ISSN
0022-4596

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✦ Synopsis

The electronic structure of the spinel-type LiMn 2 O 4 as the cathode material for the application in secondary batteries was probed using both Mn K-and L 23 -edge X-ray absorption near edge structure (XANES) spectra. Based on the energy shifts of the absorption peaks in the XANES spectrum correlated to the effective charge, the valence of Mn in LiMn 2 O 4 was determined to be &4Ψ‰. This suggests that the chemical substitution of low valent Li Ψ‰ ions into the Mn sites is possible to result in high valence of Mn.

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