Activated carbon derived from rice husk by NaOH activation and its application in supercapacitor

作者：Khu Le Van^*; Thu Thuy Luong Thi

来源：Progress in Natural Science, 2014, 24(3): 191-198.

DOI：10.1016/j.pnsc.2014.05.012

• Rice husk
• Activated carbon
• Supercapacitor
• Surface area
• Micropore

Four activated carbon (AC) samples prepared from rice husk under different activation temperatures have been characterized by N-2 adsorption-desorption isotherms, thermogravimetric analysis (TGA DTA), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The specilic surface area of AC sample reached 2681 m(2) g(-1) under activation temperature of 800 degrees C. The AC samples were then tested as electrode material; the specific capacitance of the as-prepared activated carbon electrode was found to be 172.3 F g(-1) using cyclic voltammetry at a scan rate of 5 mV s(-1) and 198.4 F g(-1) at current density 1000 mA g(-1) in the charge/discharge mode.

• 出版日期2014-6