期刊
CARBON LETTERS
卷 31, 期 6, 页码 1133-1143出版社
SPRINGER JAPAN KK
DOI: 10.1007/s42823-021-00235-4
关键词
Biomass; Cellulosic waste; Porous carbon; Supercapacitor; Energy storage
A cost-effective and sustainable high-performance supercapacitor material, CBAC, was successfully prepared from cellulosic waste. The material displayed excellent electrochemical behavior, high specific capacitance, and cycling stability, making it suitable for energy storage device applications.
Cost-effective and sustainable high-performance supercapacitor material was successfully prepared from cellulosic waste (Sapindus trifoliatus nut shells) biomass-derived activated carbon (CBAC) by physical activation method. The CBAC displays nanofiber morphology, high specific surface area (786 m(2)/g), large pore volume (0.212 cm(3) g(-1)) which are evaluated using FESEM, BET and possessed excellent electrochemical behavior analyzed through various electrochemical methods. Moreover, the assembled symmetric CBAC//CBAC device exhibits high specific capacitance of 240.8 F g(-1) with current density of 0.2 A g(-1) and it is maintained to 65.6 F g(-1) at high current density of 2.0 A g(-1). In addition, the symmetric device delivers an excellent specific energy maximum of over 30 Wh kg(-1) at 400 W kg(-1) of specific power and excellent cycling stability in long term over 5000 cycles. The operation of the device was tested by light-emitting diode. Hence, CBAC-based materials pave way for developing large-scale, low-cost materials for energy storage device applications.
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