A study on the supercapacitive behaviour of SNrGO/PEDOT:PSS composite as an electrode for electrochemical supercapacitors

Due to its light weight, tuneable electrical conductivity, superior environmental stability and electrochemical performance Poly (3,4 ethylenedioxythiophene):poly(styrene sulfonate) have attracted huge attention in the area of energy storage. To enhance their mechanical strength and stability, its composite with rGO and Sulphur, Nitrogen co-doped rGO were prepared via 2-steps hydrothermal method. The structural and morphological study XRD, SEM and Raman spectroscopy confirms the formation of SNrGO/PEDOT:PSS and rGO/PEDOT:PSS composites. The electrochemical profile study using Cyclic voltmetery shows that SNrGO/PEDOT:PSS have better specific capacitance C sp (324 F/g at 10 mV/s scan rate) and cyclic stability 96% over 500 cycle as compared to rGO/PEDOT:PSS. The SNrGO/PEDOT:PSS electrode shows 206.6 F/g specific capacitance at 0.2 A/g current density which was calculated from charge/discharge profile. Due to its good electrochemical performance and low cost synthesis method SNrGO/PEDOT:PSS may become a promising electrode material for electrochemical supercapacitors.