Synthesis of graphene by electrochemical exfoliation using aqueous electrolytes

Graphene is one of the allotropes of carbon that the carbon atoms are stacked two-dimensionally as thick as a carbon atom with sp2 hybridization. Each carbon atom is attached to three neighboring carbon atoms by the σ bond, which is a strong covalent bond, and they have created a hexagonal structure. In fact, graphene is the basic structure of most carbon allotropes such as fullerene, carbon nanotubes and graphite. Graphene has received a lot of attention in recent years due to its unique electrical, mechanical, optical and etc. properties. Finding a suitable, efficient, cheap and highefficiency synthesis method is one of the most important challenges of studies in the field of this material. In this study, graphene was synthesized by electrochemical exfoliation in several different electrolytes and by using Raman spectroscopy, visible-ultraviolet, and Fourier transform infrared, quality of synthesized graphene has been investigated. The layered structure and folds of graphene are also shown by FESEM and TEM imaging.