The aim of this study was to search for performance of Pt/Ni-Sb-SnO2 and GC/Ni-Sb-SnO2 for limiting O-2 evolution and enhancing ozone production. The impact of basic variables on the coated electrodes like nucleation current density, growth current density, growth charge, nucleation charge and electrolyte type were surveyed. Furthermore, the three-dimensionality the scaling ratio and the percentage of electroactive surface of the modified GC electrodes has been studied by the fractal method. The resulting data is fully consistent with the experimental results. According to the SEM images of the electrode's surface, the surface of the modified GC electrode by Sn, Sb and Ni metals has been covered. This situation did not happen completely in Pt electrode, which is indicative of the better performance of the modified GC electrode. The results of the XRD and EDX also confirming the above findings show that unlike the modified GC electrode, Sn has not been deposited on the Pt electrode's surface.