期刊
RADIATION PHYSICS AND CHEMISTRY
卷 189, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.radphyschem.2021.109766
关键词
Co-precipitation method; X-ray absorption spectroscopy; LiCoO2; Synchrotron powder X-ray diffraction
资金
- NANOTEC, NSTDA, Ministry of Science and Technology, Thailand, through its program of Research Network NANOTEC
- School of Physics, Institute of Science, Suranaree University of Technology
- Synchrotron Light Research Institute (Public Organization) , Thailand
The effect of annealing temperature and washing process on the crystal structures of prepared LiCoO2 powders were thoroughly studied using Syn-XRD, XAS, and Raman techniques. Phase evolution of LiCoO2 powders upon heat treatment was identified, with the formation of HT-LiCoO2 phase observed at an annealing temperature as low as 300 degrees C.
Lithium cobalt oxide (LiCoO2) powder was prepared by co-precipitation method and annealed at different temperatures of between 300 and 700 degrees C. The effect of annealing temperature and effect washing process with deionized water on the crystal structures of the prepared LiCoO2 powders were thoroughly studied by Synchrotron powder X-Ray Diffraction (Syn-XRD), X-ray Absorption Spectroscopy (XAS), Dispersive Raman Microscopy (Raman) techniques. The change in chemical composition as a function of annealing temperature was also investigated by X-ray Photoelectron Spectroscopy (XPS) technique. The crystal structural results identified the phase evolution of the prepared LiCoO2 powders upon heat treatment. The formation of HT-LiCoO2 phase was observed at annealing temperature as low as 300 degrees C.
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