Characterization of LiCoO2 Synthesized via Structural and Compositional Variations of Precursors Prepared by Precipitation 


Vol. 12,  No. 2, pp. 101-106, Jun.  2006


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  Abstract

HT-LiCoO2 powders were synthesized from hydroxide precursors in this study. The cobalt hydroxide compounds with hydrotalcite-like(α-phase) and/or brucite-like(β-phase) structures as a component of the precursor were prepared in various PH conditions using precipitation method. It was found that various phase and compositions of cobalt hydroxides could be tailor-prepared via a careful control of preparation parameters such as the concentration ratio of [OH-]/[Co2+] and aging time. The hydroxides Co(OH)2 and LiOH were mixed with aqueous methyl-alcohol. The precursor of a HT-LiCoO2 was synthesized via subsequent processes including evaporation, drying and aging. The transformation of tailor-made β-phase Co(OH)2 to CoOOH and formation of solid solution in the precursor were achieved during aging. These results cause HT-LiCoO2 to be synthesized at low temperature(600℃) for a short time(10min).

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  Cite this article

[IEEE Style]

J. MK, H. CS, C. CS, "Characterization of LiCoO2 Synthesized via Structural and Compositional Variations of Precursors Prepared by Precipitation," Clean Technology, vol. 12, no. 2, pp. 101-106, 2006. DOI: .

[ACM Style]

Jeong MK, Hwang CS, and Choi CS. 2006. Characterization of LiCoO2 Synthesized via Structural and Compositional Variations of Precursors Prepared by Precipitation. Clean Technology, 12, 2, (2006), 101-106. DOI: .

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한국연구재단 등재학술지