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NCPCM 2017 IOP Publishing IOP Conf. Series: Materials Science and Enginee1ri2n3g43536878(920‘1’8“)” 012063 doi:10.1088/1757-899X/338/1/012063 Materials and Methods: High quality pure graphite rod and Oxalic acid (Sigma Aldrich) and a DC voltage source. FLGS were prepared by electrochemical method using two high quality graphite rods like electrodes and oxalic acid like electrolytes. A dc voltage of 60 V was appliedto the electrodes which was immersed in the solution of oxalic acid (0.3M) maintained at 0o C about 20 hours. At first the electrodes were wettedand then the interaction of C2O4H-with the grain boundary of graphite were happened. After a few times, the graphite rods rust and dissociates into small pieces in the solution. The upper portion of the solution was filtered after sonication and then neutralized to recover the graphene flakes. The collected samples were dried in an oven at 1300C about 10 hours. Result and Discussion: The FESEM image of graphene sheets prepared by electrochemical is shown in Figure 1(a). From the FESEM images of graphene sheets, it is mainly observed that exfoliated crumpled graphene sheets are randomly oriented.The TEM image of graphene sheets are shown in Figure 1(b).A few layers of sheets through a sheet distance about 0.335nm is confirmed by the TEM images. The HRTEM image (Figure 1(c))reveals that the prepared materials are few layers graphene sheets(FLGS). The many spots in diffraction pattern confirms the crystalline nature of FLGS (figure 1(d)). Figure1: (a) FESEM, (b)TEM, (c)High resolution TEM images, (d) SAED pattern of FLGS 2PDF Image | graphene sheets (FLGS) prepared by an electrochemical method
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