Performance of single layer graphene obtain by chemical vapor deposition on gold electrodes

摘要

Single layer graphene was synthesized by chemical vapor deposition method (CVD), on copper foil, and then transferred on gold structured electrodes. The transferred single layer graphene has high electrical conductivity and high specific surface area, these properties are very applicable for enhanced sensor performance. A detailed analysis of the transferred graphene on the gold structured electrodes was performed by Raman spectroscopy, scanning electron microscopy (SEM), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Raman spectroscopy indicates that the single layer graphene film was transferred successfully on the gold/glass substrate. The gold structure coverage and the transferred layer uniformity were performed by SEM, in order to determine the graphene morphology after transfer. The influence of single layer graphene on electrochemical performance for working electrodes was studied by CV and EIS. The results established performance through: 1) the capacitance of double layer for gold electrodes reached up to 0.5 mF; 2) the graphene on gold electrodes exhibited significant better capacitance of double layer: 0.13 mF and the superior electrochemical properties.