of CNTs, N-CNT1, and N-CNT2 were found to be 272, 200, and 172 m 2 g -1 , respectively. The N-carbon coating on the surface of CNTs led to a slight decrease in the SBET, due to the lack of porosity of the N-doped coating layer. The electrochemical performances of the N-CNTs were analysed in two-and three-electrode system using 1 M H2SO4 electrolyte. From electrochemical studies it was clear that, the N-doping of the CNTs exhibited a remarkable change in the specific capacitance of N-CNT composites, even though the N-doping led to a decrease in the SBET of the corresponding materials. As an evidence, the specific capacitance values increased from 8 µF cm -2 for CNT to 24, and 32 µF cm -2 for N-CNT1, and N-CNT2, respectively. The reason for the increased specific capacitance is the improved wettability after N-doping, which may increase the EDL capacitance. Further, 16 µF cm -2 (67%), and 24 µF cm - 2 (75%) of pseudocapacitance contribution was estimated for N-CNT1, and N-CNT2, respectively. Three-electrode cell measurements were performed on N-CNT2 sample because of its highest pseudocapacitance contribution. In three-electrode system, the N-CNT electrode delivered a specific capacitance of 56 F g -1 , which is very close to that of value obtained from two-electrode system (~54 F g -1 ), and suggests the complete exploitation of pseudocapacitance phenomena in the two-electrode cell. The cycling stability studies of both N-carbon coated CNTs showed the decrement of only 3% at 0.5 A g -1 (after 500 cycles), and the decrement of 4%, and 6% at 10 Ag -1 (after 1000 cycles). The study demonstrated the advantages of the hydrothermal synthesis method such as renewable nature of the N-dopant, environmentally friendly character of the process, and superficial nature of the coating with N-doped carbon to ensure quick access to the redox groups.