Qian et al. demonstrated the synthesis of heteroatom-doped carbon flakes through carbonization of human hair for electrochemical supercapacitor applications . The KOH activated porous carbon materials were prepared at 700, 800, and 900 ˚C temperature under Ar atmosphere, and labelled as HMC-700, HMC-800, and HMC-900, respectively. The HMCs activated at 700, 800, and 900 ˚C exhibited the SBET of 1054, 1306, and 669 m 2 g -1 , respectively.