A composite of carbon nitride (CN) and reduced graphene oxide1(RGO) were prepared and used as an electrode material for supercapacitor application. The limited electrical conductivity of carbon nitride is overcome by initially protonating the carbon nitride (p-CN) by refluxing, to increase its conductivity2. The p-CN was hydrothermally treated with graphene oxide to form a composite of p-CN/RGO. Morphology was analysed using a scanning electron microscope (SEM); it reveals an interlayered structure of carbon nitride and graphene. The electrochemical behaviour was studied using a three-electrode system using sulphuric acid and potassium hydroxide as an electrolyte. Electrochemical behaviour was studied using cyclic voltammetry within a potential window of -0.4 to 0.75V. The characteristics show a nearly rectangular shape showing the double layer capacitance behavior. The sulphuric acid medium was found to be better electrolyte for the composite as there were no signs of voltage drop in comparison with potassium hydroxide electrolyte. The composite electrode was found to be a better electrode for supercapacitor applications.
References
1 C. Lu, Y. Yang and X. Chen, Nano Lett., 2019, 19, 4103–4111.
2 Q. Li, D. Xu, J. Guo, X. Ou and F. Yan, Carbon N. Y., 2017, 124, 599–610.
Figure 1
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.