Abstract
Standard graphite TIMREX® SLX 50 was oxidised at 500–800 °C under air atmosphere in a muffle and a rotary furnace. Scanning Electron Microscopy (SEM), Raman spectroscopy, and X-Ray Powder Diffraction (XRD) were used to study the changes in surface morphology and crystallinity. The results show a slight increase of the La value and a decrease of the rhombohedral fraction with increased heat-treatment temperature (HTT). XRD measurements show no significant change in La values within the bulk of graphite samples. Above 700 °C SEM images of graphite reveals holes and cavities, whereas heat-treatment temperatures below 700 °C do not significantly affect graphite materials parameters.
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Goers, D., Buqa, H., Hardwick, L. et al. Raman spectroscopic and structural studies of heat-treated graphites for lithium-ion batteries. Ionics 9, 258–265 (2003). https://doi.org/10.1007/BF02375977
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DOI: https://doi.org/10.1007/BF02375977