期刊
APPLIED SURFACE SCIENCE
卷 502, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2019.144191
关键词
N/S co-doping; Porous carbon; Biowaste; PEDOT; Supercapacitor
类别
资金
- China Government 1000 Plan Talent Program
- China MOE NCET Program
- Natural Science Foundation of China [51772282, 51322204]
- Specialized Research Fund for the Doctoral Program of Higher Education [20120111120009]
Nitrogen/sulfur co-doped porous carbons (NSPCs) receive extensive attention in recent years, but the cost-efficient preparation of NSPCs remains a challenge. In this work, one-step carbonization of biowaste (bamboo shoot shells, BSS)/poly(3,4-ethyldioxythiophene) (PEDOT) composite is used to prepare NSPC. The introduction of PEDOT into biowaste precursor leads to the higher S content and the larger specific surface area of the obtained NSPC. In symmetric supercapacitors, the NSPC (specifically sample PC-600) gives a gravimetric capacitance of 302.5 F g(-1) at current density of 0.5 A g(-1) and excellent capacitance retention of 87% after 10,000 cycles at 5 A g(-1) in 1M H2SO4 electrolyte. The energy density reaches 30.60 Wh kg(-1) at power density of 468.75 W kg(-1) in 1M 1-Butyl-3-methylimidazolium hexafluorophosphate (EMIMPF6) electrolyte and the supercapacitor powers fourteen yellow light emitting diodes (LEDs) for 30 s after charging for 2 s. We believe that the PC-600 is a promising electrode material for high performance supercapacitors.
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