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Temperature dependent local structure of LiCoO2 determined by in-situ Co K-edge X-ray absorption fine structure (EXAFS)
Author(s)
Ekwongsa, Chinawat
Rujirawat, Saroj
Butnoi, Pichitchai
Suttapun, Manoon
Yimnirun, Rattikorn
Kidkhunthod, Pinit
Date Issued
October 1, 2020
Type
Article
Abstract
Recently, lithium cobalt oxide (LiCoO2) has a great attention as active cathode material lithium ion batteries. In this work, LiCoO2 powder was prepared by solid state reaction and co-precipitation method. The synthesis parameters and phase formation behavior were investigated in details via several techniques, including thermal analysis, X-ray diffraction (XRD) and scanning electron microscopy (SEM). A change in local structure depending on temperature around Co atoms was investigated using in-situ extended X-ray absorption fine structure (EXAFS). The temperature ranged between 300 °C and 700 °C under air condition was applied for this study.
Citation
Radiation Physics and Chemistry, 175, 2020