Measurement data of cyclic voltammetry and electrochemical impedance measurements of carbon samples synthesized on axes and off axes

The electrochemical performance of the multielectrode samples were investigated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) using a VMP-300 BioLogic galvanostat potentiostat (France) under the EC-lab software. All electrochemical investigations were carried out in a three-electrode cell system. The carbon multi-electrode, a platinum wire and an Ag/AgCl/3 M KCl electrode were used as the working electrode (WE), auxiliary electrode (AE), and reference electrode (RE), respectively. The electrochemical measurements were recorded in outer and inner sphere redox probe (5 mM Fe [(CN)6] 3-/4− (1:1) with 0.5 mol dm− 3 of Na2SO4 as supporting electrolyte and 5 mM [Ru(NH3)6]Cl3 with 0.5 mol dm− 3 of Na2SO4 as supporting electrolyte. The scan rate applied for cyclic voltammetry (CV) was equal from 10 to 200 mVs− 1. The EIS were recorded at open circuit potential across the frequency from 0.1 Hz to 200 kHz. The peak-to-peak amplitude was equal to 10 mV.