期刊
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
卷 29, 期 24, 页码 20991-21001出版社
SPRINGER
DOI: 10.1007/s10854-018-0244-1
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资金
- China Government 1000 Plan Talent Program
- Natural Science Foundation of China [51322204]
- Specialized Research Fund for the Doctoral Program of Higher Education [20120111120009]
- Fundamental Research Funds for the Central Universities [WK2060140014, WK2060140017, 2013HGXJ0199, J2014HGXJ0092]
- China MOE NCET Program
Activated carbon derived from plant wastes is attractive for the fabrication of low cost and high performance electrochemical energy storage devices. The heteroatoms (O, N)-doped porous carbon (KAC-700) is fabricated from bamboo shoots shells via KOH activation. The symmetric supercapacitor based on KAC-700 has gravimetric and volumetric capacitance of 223.21Fg(-1) and 167.63Fcm(-3), respectively, at current density of 1Ag(-1) in 1M H2SO4 electrolyte. This supercapacitor also delivers a high energy density of 13.15Whkg(-1) at power density of 546.60Wkg(-1) in 1M Na2SO4 electrolyte, as well as high capacitance retention rate of 93.62% after 4000 cycles at 5Ag(-1). Compared with graphene, carbon nanotubes and other expensive carbon material, this activated carbon has a bright future due to its low cost and easy fabrication process as electrode material for supercapacitors.
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