Effects of reduction and polystyrene sulfate functionalization on the capacitive behaviour of thermally exfoliated graphene
Abstract
Thermally exfoliated and reduced graphite oxide (TEG) was prepared at high temperature (1000 °C). The supercapacitor behavior of the resulting TEG would be affected by the specific surface area (SSA) and the surface interactions of the remaining oxygen functional groups with the electrolyte media. The oxygen functional groups on the surface of TEG were controlled by varying the duration of thermal treatment (5, 10, 20, 30 and 45 s). Polystyrene sodium sulfate (PSS) functionalized TEG (PSS-f-TEG) was prepared to aid the interaction with the polar groups of the electrolyte media and its electrochemical performance was measured. Fourier transform infrared and