Graphene nanosheets film by plasma electrolysis deposition

In this research, cathodic plasma electrolysis, as a novel surface coating process, was studied for formation of graphene nano-sheets coating on nickel surface. In this process, the plasma is formed around the cathode by application of high voltage between two electrodes with different surface area and graphene nano-sheet produced from electrolyte contain ethanol as carbon precursor and deposited on substrate by formation of plasma at atmosphere pressure in one step and short time. The quality of coating is studied by using Raman spectroscopy and scanning electron microscopy. The intensity and the position of Raman spectrum bands confirm formation of turbostratic graphene nano-sheets with maximum 10 layers on surface. An increase of process time cause to a slightly increase in thickness at graphene layers and a reduction at structural defects of layers. The effect of laser wavelengths on Raman spectrum by using 633 and 785 nm laser were shown an increase at firs order scattering, D and G and a reduction at second order scattering, 2D and D'' bands intensity.