Human hair-derived carbon flakes for electrochemical supercapacitors

• DOI: 10.1039/c3ee43111h
• Publication Date: 2013-11-12T10:10:50Z
• Authors: Wenjing Qian; Fengxia Sun; Yanhui Xu; Lihua Qiu; Changhai Liu; Suidong Wang; Feng Yan
• Keywords: Heteroatom; Diethyl carbonate; Carbon fibers

Heteroatom doped porous carbon flakes were prepared via carbonization of Chinese human hair fibers and employed for high-performance supercapacitor electrode materials. The morphology chemical composition the resultant materials characterized by electron microscopy (EM), energy-dispersive X-ray spectroscopy (EDX), photoelectron (XPS) measurements. Human carbonized at 800 °C exhibited high charge storage capacity with a specific capacitance 340 F g−1 in 6 M KOH current density 1 A good stability over 20 000 cycles. 126 is also verified LiPF6 ethylene carbonate/diethyl carbonate (EC/DEC) organic electrolyte g−1. performance could be due to micro/mesoporosity combined effective surface area heteroatom doping effects, combining double layer Faradaic contributions.