Chemical delithiation and exfoliation of LixCoO2
Date
2014
Authors
Basch, Angelika
De Campo, Liliana
Albering, Jorg
White, John
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Academic Press
Abstract
Progressive chemical.delithiation of commercially available lithium cobalt oxide (LixCoO2) showed consecutive changes in the crystal properties. Rietveld refinement of high resolution X-ray and neutron diffraction revealed an increased lattice parameter c and a reduced lattice parameter a for chemically delithiated samples. Using electron microscopy we have also followed the changes in the texture of the samples towards what we have found is a critical layer stoichiometry of about LixCoO2 with x=1/3 that causes the grains to exfoliate. The pattern of etches by delithiation suggests that unrelieved strain fields may produce chemical activity.
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Journal of Solid State Chemistry
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Journal article
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2037-12-31
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