The boosted capacitance was attributed to co-doping of N, P and Na over graphene sheets. The N, S and P-doped graphene was prepared by the hydrothermal treatment of holey graphene oxide (HHGO) with sources such as L-cysteine and ammonium dihydrogen phosphate using hydrothermal method in teflon lined autoclave at 140 °C for 2 h and acquired the specific capacitance of 295 F g -1 at 1 A g -1 in 2M KOH aqueous solution with the excellent retention in capacitance of 93.5% over 10 4 cycles . The order of specific capacitance (F g -1 ) at 1 A g - 1 in 2 M KOH solution is N, S, P -HHGO (295) > N, S -HHGO (260)> N, P-HHGO (230).