XANES analysis for cation-vacancy distribution induced by doping Al ions in transition-metal-oxide anodes of lithium battery - Université de Rennes Access content directly
Journal Articles Radiation Physics and Chemistry Year : 2020

XANES analysis for cation-vacancy distribution induced by doping Al ions in transition-metal-oxide anodes of lithium battery

Abstract

We measured an Al K-edge x-ray absorption near edge structure (XANES) spectrum of Al doped NiO for anode materials of lithium ion batteries. We found that the spectrum of the Al doped NiO is similar to that of γ-Al2O3. Calculated site-specific XANES spectra strongly correspond to the coordination nature around the absorbing Al ion, indicating aggregation of cation vacancies surrounded by Al ions in the Al doped NiO. These finding could be useful to understand how Li ions migrate in the anode.
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Dates and versions

hal-02176674 , version 1 (08-07-2019)

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A. Koide, M. Eguchi, N. Komiya, J. Kogo, N. Sonoyama, et al.. XANES analysis for cation-vacancy distribution induced by doping Al ions in transition-metal-oxide anodes of lithium battery. Radiation Physics and Chemistry, 2020, 175, pp.108154. ⟨10.1016/j.radphyschem.2019.02.013⟩. ⟨hal-02176674⟩
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