Graphitization of unburned carbon from oil-fired fly ash applied for anode materials of high power lithium ion batteries

- From TEM observations, the graphitization treatment samples had annular microstructure.
- Sample with heat treatment at 2300 °C is a suitable material for the higher C-rate region.
- Sample with heat treatment at 2700 °C yields the first columbic efficiency of about 93.6%.