Large-size graphene-like porous carbon nanosheets with controllable N-doped surface derived from sugarcane bagasse pith/chitosan for high performance supercapacitors
作者： Qingyuan Niu , Kezheng Gao , Qiheng Tang , Lizhen Wang , Lifeng Han
DOI: 10.1016/J.CARBON.2017.07.078
关键词: Bagasse 、 Electrode 、 Electrochemistry 、 Supercapacitor 、 Materials science 、 Capacitance 、 Graphene 、 Doping 、 Composite material 、 Power density
摘要: Abstract The large-size graphene-like porous carbon nanosheets (LGPCN) with controllable N-doped surface are successfully prepared by using a simple and effective integrated “self-template” “designing” strategy through KOH activation. Biomass-sugarcane bagasse pith chitosan used as self-template source controlled nitrogen source, respectively. relationship between structure of the LGPCN-X (X represents activation temperature) its electrochemical performance at different temperatures is explored in detail. multiscale wrinkled architecture, high area, appropriate doping state LGPCN-800 shows best 6 M KOH. largest specific electrode capacitance about 339 F g −1 (at 0.25 A g ), which still 280 F g 100 A g . maximum energy density 11.77 Wh kg power 34.11 W kg also an excellent cycling stability 97.9% retention after 10,000 cycles.
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