Jia et al. reported the synthesis of heteroatom incorporated porous carbon from cicada slough through a simple activation process . The activated porous carbon product from cicada slough has high potency of naturally-derived heteroatom functionalities containing 12.06% atomic ratio of nitrogen, oxygen, sulfur, and phosphorous, exhibited well-developed microporosity, and high SBET of 1676 m 2 g -1 . The electrochemical measurements were carried out in a three-electrode system using CV, GCD and electrochemical impedance techniques in 6.0 M KOH aqueous electrolyte. The fabricated carbon electrode showed an enhanced specific capacitance of 355 F g -1 at a current density of 1 A g -1 with the rate capability of 284 F g -1 at 10 cycles, but the capacitance was found to be lowered by only 3.6% after 10,000 cycles indicating its high cycling stability as an EDLC electrode material. The observed electrochemical performances demonstrated the contribution of pseudo-capacitances and the improved wettability by the appropriate doping of heteroatom in the carbon material. 1535 m 2 g -1 . The XPS analysis suggested the presence of oxygen content in the activated samples of about 7 to 8 at%, which is significantly higher than that of the carbonized samples that showed about 3.8 at% of oxygen. The suggested the introduction of oxygen-containing groups by the KOH activation process. The electrochemical performance of heteroatom doped carbons was investigated in a three-electrode system using 6 M KOH as electrolyte. The fabricated PG-C, HTC-PG-C, PG-AC, and HTC-NPG-AC delivered a capacitance of 199, 223, 334, 322, and 406 F g -1 at the current density of 0.2 A g -1 , and showed the rate capability of .2% from the current density of 1.0 A g -1 , and 20.0 A g -1 ,