期刊
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
卷 21, 期 8, 页码 2241-2249出版社
SPRINGER
DOI: 10.1007/s10008-017-3562-y
关键词
Biomass-derived activated carbon; Torreya grandis shell; KOH activation; Supercapacitor; High capacitance
资金
- 521 talent project of ZSTU
- National Undergraduate Training Program for Innovation and Entrepreneurship [201510338001]
In this paper, we reported a novel biomass-derived porous carbon from torreya grandis shell for the first time by means of carbonization and KOH activation under N-2. The pore structures were related to the ratio of KOH and activation temperature. N-2 adsorption-desorption tests indicated that the sample of AC-800-3 has a maximum specific surface area of 2100.8 m(2) g(-1) and proper pore volume of 1.02 cm(3) g(-1). The electrode prepared with AC-800-3 realized a high capacitance of 290.5 F g(-1) at 0.5 A g(-1) and excellent rate capability of 62.6% in three-electrode system. The assembled symmetrical cell of AC-800-3 electrode exhibited a high energy density of 13.5 W h kg(-1) at a power density of 360.1 W kg(-1) in the potential range of 0-1.6 V and excellent cycling stability with 93.1% retention of the initial capacitance after 5000 cycles.
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