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Chemical delithiation and exfoliation of LixCoO2

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Date

2014

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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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Keywords

Chemical delithiation, Intercalation, Li-ion Battery, Neutron diffraction, Rietveld refinement

Citation

URI

https://dspace-test.anu.edu.au/handle/1885/733723893

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DevOps Pure Testing

Source

Journal of Solid State Chemistry

Type

Article

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DOI

10.1016/j.jssc.2014.08.011

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