| 초록 |
Short-step and environmentally friendly synthesis is important for scalable synthesis and industrial application of graphene. The control of these graphenes is also one major points in graphene based nanocomposites. However, high-yield exfoliation of graphite to form graphene sheets without using any oxidation process or super-strong acid is challenging. In this study we exfoliated graphite through electrochemical process in various solvents and electrolytes. The structure and exfoliated states are studied by powder X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), and Transmission electron microscopy (TEM). Surface and thermal properties are characterized by Raman spectroscopy, Fourier-transform infrared (FT-IR), and thermo-gravimetric analysis (TGA). Surface groups of electrochemically exfoliated graphene depend on electrolytes and electrode that are connected with graphite. |
