[788] As the carbonization temperature rises, the SBET decreases from 884 to 827 m 2 g -1 while the pore volume enhances from 0.93 to 1.33 cm 3 g -1 . It was too demonstrated that the content of phosphorus increases with carbonization temperature Among the different samples, the PMC-900 delivered the increased gravimetric capacitance of 202 F g -1 at 0.1 A g -1 in 6 M KOH aqueous solution, respectively. Furthermore, the PMC-900 delivered the high energy density of 11.8 Wh Kg -1 in 3 M H2SO4 aqueous solution at the operating voltage of 0-1.6 V. The electrochemical supercapacitive performance of heteroatom doped mesoporous carbon from the various reports is listed in Table . On the other hand, N-OMC was produced by soft-template method. The N-OMCNFA submitted the gravimetric capacitance of 264 F g -1 at 0.5 A g -1 in 1 M H2SO4 which is higher than N-OMC (167 F g -1 ) which might be due to the fact that the nitrogen content of N-OMCNFA (6.7 wt. %) is higher than N-OMC (4.6 wt. %). Besides, the SBET of N-OMCNFA (1030 m 2 g -1 ) is larger than N-OMC (516 m 2 g -1 ). It was proposed that the large ordered mesoporous channels as well as the macroporous windows obtained by the cross-packing of the carbon nanofibers furnishes optimal pathway for the mobility of ions and minimum prepared NOMC is about 5.74 at. %. It was found that huge quantity of micropores existed in the ordered mesopore walls because of etching of silica template with HF. Thereby the measured SBET value of NOMC is found to be 1374 m 2 g -1 which is higher than NOMC without silica oligomers (631 m 2 g -1 ). Hence the prepared NOMC submitted the gravimetric capacitance of 308 F g -1 at 0.2 A g -1 in 1 M H2SO4 which is greater than OMC without N-doping (235 F g - The NOMC obtained with toluene as the solvent displayed the gravimetric capacitance of 190.2 F g -1 at 0.5 A g -1 in 6 M KOH solution which is higher than that formed with ethanol (152. 4 F g -1 ). This is because of which the NOMC obtained with toluene got the nitrogen level of 2.4 at. % which is higher than that formed with ethanol (0.6 at. %) proposing that the organoamine functionalities are effectively as well as successfully grafted with toluene.