Fascinatingly, Li et al. prepared the N, P co-doped graphene by hydrothermal method using various mass ratios of GO and ammonium dihydrogen phosphate and the optimized material got the specific capacitance of 348 F g - at 1 A g -1 in 6 M KOH aqueous solution as the electrolyte and assembled as a Na-ion supercapacitor in 2 M solution of Li2SO4 electrolyte delivering the high energy density of 34.7 Wh Kg -1 with the capacitance retention of . Furthermore, the optimised material was fabricated as a symmetric supercapacitor and lighted 11 LEDs proposing that it is ideal for practical applications as displayed in Fig. . By fine tuning the amount of ammonium dihydrogen phosphate, the tremella-like electrode material demonstrating the best performance towards energy storage has been obtained. In another study, the nitrogen and phosphorus co-doped graphene was obtained by laser assisted pyrolysis technique using polyamic acid and orthophosphoric acid . The optimized N, P co-doped graphene (NP3-LIG-3.5) based solid-state symmetric supercapacitor has got the capacitance of 69.7 mF/cm 2 at 0.05 mA/cm 2 along with good electrochemical stability having capacitance retention of 84% after 10,000 cycles along with coulombic efficiency of 100% and enhanced energy density of 9.67µWh/cm 2 . XPS investigations revealed that the atomic percentage of nitrogen and phosphorus in NP3-LIG-3.5 found to be 1.12 and 1.26 at. %, respectively. The optimal quantity of N and P dopants introduces the sufficient number of electrochemical active centers which are presumed to be highly accountable for the increased performance. Recently, Sandhiya et al. obtained the N, P co-doped graphene by supercritical fluid method using ammonium dihydrogen phosphate as the dopant . The quantity of both phosphorus and nitrogen presents in the XPS deconvoluted spectrum of NPGO-(1:2) are found to be 1.35 and 1.95 at. %, respectively. From Fig. , the drastic increment in the specific capacitance of N, P co-doped graphene at 4 A g -