Activated carbon derived from rice husk by NaOH activation and its application in supercapacitor |
| |
Authors: | Khu Le Van and Thu Thuy Luong Thi |
| |
Affiliation: | Physical Chemistry Department, Hanoi University of Education, Hanoi 1000, Vietnam;Physical Chemistry Department, Hanoi University of Education, Hanoi 1001, Vietnam |
| |
Abstract: | Four activated carbon (AC) samples prepared from rice husk under different activation temperatures have been characterized by N2 adsorption–desorption isotherms, thermogravimetric analysis (TGA–DTA), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The specific surface area of AC sample reached 2681 m2 g−1 under activation temperature of 800 °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. |
| |
Keywords: | Rice husk Activated carbon Supercapacitor Surface area Micropore |
本文献已被 维普 ScienceDirect 等数据库收录! |
| 点击此处可从《自然科学进展(英文版)》浏览原始摘要信息 |
|
点击此处可从《自然科学进展(英文版)》下载全文 |