Framework of Graphene Oxide (FOG) Synthesis and its Application as Supercapacitor

Abstract

Graphene oxide (GO) was synthesized by environmental friendly improved Hummers method. The para-xylylenediamine (1,4-XDA) and 2,6-diaminopyridine (2,6-DAP) modified frameworks of graphene oxide (FGO) were synthesized by a facile solution processing. Different samples were prepared varying the amount of 1,4-XDA and 2,6-DAP. Characterization of graphene oxide (GO) and framework of graphene oxide (FOG) was performed by different analytical techniques like UV-Vis Spectroscopy, FTIR, XRPD, SEM, TGA, BET etc. The synthesized FOG materials were employed as active working electrode materials in three electrode system for the study of their behaviour as supercapacitor. The electrochemical properties and the mechanism how these materials improved the electrochemical performance were investigated systematically. 1,4-XDA and 2,6-DAP molecules incorporated between the graphene sheets demonstrated a loose and crumpled microstructure. The maximum specific capacitance value was found for FOG-X-A i-e 360 Fg-1 and minimum for FOG-D-C i-e 29.37 Fg-1. The results revealed the role of amine-based organic additives in graphene supercapacitor materials and verified the FOG-X-A as the electrode materials of supercapacitor with an excellent electrochemical performance.