versus the control samples N-C (125 F g -1 ), AC-1 (121 F g -1 ), and AC-2 (128 F g -1 ) at 100 mA g -1 . The HPNC-950 electrode showed a superior energy density of 23.75 W h Kg -1 at a power density of 50 W Kg -1 , and 14.58 W h Kg -1 at a high-power density of 5000 W Kg -1 , and showed the long cycling stability with a capacitance retention of 94.5% after 5000 cycles. Further, a symmetric supercapacitor electrode was constructed using HPNC950, and demonstrated a high specific capacity of ~ 100 F g -1 at 0.2 A g -1 , and ~ 70 F g -1 at 10 A g -1 along with a retention of ~ 81% capacitance over 5000 cycles. The obtained supercapacitive performances are attributed to hollow carbon with micro/meso-/macro-porous nanoparticles, and faster mass transmission speed, and the novel 3D helical rod-like frameworks that enhanced the structural stability of electrodes, and the nitrogen doped played a major role on enhancing the supercapacitor performance due to the change of electron distribution around active sites.