Preparation of LiCoO2 and LiCo1–xFexO2 using hydrothermal reactions
Abstract
Iron doped/undoped LiCoO
2
powders could be obtained from hydrothermal reactions of either Fe
3+
or Co
3+
containing co-precipitates or a CoCl
2
-NaOH-NaClO
3
(oxidant) mixture with an excess amount of LiOH·H
2
O at 220 °C for 8-48 h. The LiFe
x
Co
1–x
O
2
solid solution maintained a layered rock-salt structure until x=0.25.
57
Fe Mössbauer and Co K-edge XANES spectra and magnetic susceptibility data reveal that iron and cobalt in the solid solution are in high-spin Fe
3+
(S=5/2) and low-spin Co
3+
(S=0) configurations.
- This article is part of the themed collection: Solid state chemistry: Novel Syntheses and New Materials: Materials Discussion 1
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