X-ray absorption and magnetic resonance spectroscopic studies of LixV6O13
作者： S. Kostov , M. L. denBoer , S. G. Greenbaum , C. Lampe-Onnerud , P. E. Stallworth
DOI: 10.1063/1.366822
关键词: Analytical chemistry 、 Vanadium 、 Oxidation state 、 Lithium 、 Chemistry 、 Solid-state nuclear magnetic resonance 、 Electron paramagnetic resonance 、 Extended X-ray absorption fine structure 、 Absorption (chemistry) 、 NMR spectra database
摘要: Polycrystalline LixV6O13 samples, 0.5⩽x⩽6, were prepared by chemical intercalation in n-butyl lithium and investigated spectroscopically x-ray absorption, electron paramagnetic resonance (EPR), 7Li solid state nuclear magnetic (NMR). Both the EPR results vanadium K-edge absorption fine structure spectra show that average oxidation of decreases with addition Li, provide evidence deficient oxygen impurity phases. The local symmetry atoms first increasing x from 0⩽x⩽1 then increases as octahedral environment becomes less distorted. These changes are revealed both intensity V-O peak radial distribution function decrease pre-edge intensity. However, structural correlations beyond nearest neighbor rapidly Li content above x=1.5, reflecting ...
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