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DOI: 10.1039/A805311A (Paper) Reference Section for: J. Mater. Chem., 1999, 9, 199-204

Preparation of LiCoO2 and LiCo1–xFexO2 using hydrothermal reactions

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Mitsuharu Tabuchi, Kazuaki Ado, Hironori Kobayashi, Hikari Sakaebe, Hiroyuki Kageyama, Christian Masquelier, Masao Yonemura, Atsushi Hirano and Ryoji Kanno

Abstract

Iron doped/undoped LiCoO2 powders could be obtained from hydrothermal reactions of either Fe3+ or Co3+ containing co-precipitates or a CoCl2-NaOH-NaClO3 (oxidant) mixture with an excess amount of LiOH·H2O at 220[thin space (1/6-em)]°C for 8-48 h. The LiFexCo1–xO2 solid solution maintained a layered rock-salt structure until x=0.25. 57Fe Mössbauer and Co K-edge XANES spectra and magnetic susceptibility data reveal that iron and cobalt in the solid solution are in high-spin Fe3+ (S=5/2) and low-spin Co3+ (S=0) configurations.

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