Robertson model) as the synthesis temperature was decreased from 750 to 600 ℃ (Figure ). A broad feature at 2300 to 3200 cm -1 is also observed for all the four synthesised carbons, which is attributed to the modulated 2D, D+D' and 2D' bands. This observation aligns with previous findings, where carbons synthesised at lower temperatures have smaller graphene-like domains. We therefore propose that the capacitance increases observed as the synthesis temperature is decreased from 700 to 600 ºC arise from the presence of smaller graphene-like domains, although this cannot explain the large capacitance observed for the sample synthesised at 750 ºC.