Thus, the compound in which the nitrogen content is higher (14.7 at%) has conquered the specific capacitance of 340 F g -1 at 0.1 A g -1 in 3.5 M H2SO4 aqueous solution which is considerably higher than RGO in absence of N-doping (169 F g -1 ) and excellent stability of 97% retention in capacitance from initial value over 5000 cycles. The significant increment in suggesting that 96% retention in capacitance from initial value has achieved over 5000 cycles.