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Effects of chromium substitution on the chemical bonding nature and electrochemical performance of layered lithium manganese oxide

Article Abstract:

The effects of chromium substitution on the chemical bonding nature of LiMn1-xCrO2 are investigated by performing X-ray absorption spectroscopic analyses. The result suggests that the superior electrochemical performance of LiMn1-xCrxO2 could be attributed to the enhanced stability of the layered manganese oxide lattice because of the presence of a chromium ion in the octahedral site of the transition metal oxide layer.

Manganese, Chromium, Electric properties, Absorption spectra

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Origin of the metallization of c-axis resistivity upon iodine intercalation into Bi2Sr2CaCu2O(sub 8+delta)

Article Abstract:

A study was conducted on the origin of metallization of c-axis resistivity upon intercalation of Iodine into Bi2Sr2CaCu2O(sub 8+gamma) by performing I LI-edge angle-resolved X-ray absorption spectroscopic (XAS) analysis. The analysis suggests that there is a significant anisotropy in the 1 5p hole distribution of the intercalated iodine layer.

Iodine & Compounds, Bismuth, Iodine, Thermal properties, Clathrate compounds, Atomic properties

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Variation of the chemical bonding nature of LiMn2-Ni(sub x)O4 spinel oxides upon delithiation and lithiation reactions

Article Abstract:

The effect of nickel substitution on the chemical bonding nature of spinel lithium maganate is examined. Comparative X-ray absorption spectroscopic analyses for Ni- and Cr-substituted LiMn(sub 2-x)M(sub x)O4 (M= Ni and Cr) compounds are discussed.

Nickel Compounds, Chemical bonds

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