The atomic content of nitrogen, sulphur and phosphorus in NSP-HHGO evaluated from XPS found to be 2.94, 2.2 and 0.67 at. %, respectively. The enhanced pseudocapacitance behaviour via the existence of three doped heteroatoms (N, S and P) and the pore size are responsible for the increased capacitive nature. Our group have previously explored the synthesis of tri doped graphene for supercapacitor application . The Cr, F and N-doped graphene (CFNG) was prepared using hydrothermal accompanied by subsequent annealing using CVD method involving quinolinium fluorochromate as the precursor and the obtained material has delivered the specific capacitance of 363 F g -1 at 0.5 A g -1 in 1 M H2SO4 electrolyte which is 4.5-fold greater than GO (81 F g -1 ) . Besides, the content of elements such as chromium, fluorine and nitrogen present in the CFNG was found to be about 2.93, 0.11 and 0.15 at. %, respectively.