The electrochemical properties of the electrodes were studied in a symmetric two-electrode system using 6 M KOH aqueous solution as electrolyte and the corresponding CV profiles are shown in Fig. . The specific capacitance of heteroatom carbon, reduced heteroatom doped carbon was determined from the GCD analysis as 126 F g -1 , and 95 F g -1 at 100 mA g -1 ,