Nanoporous Carbon Derived from Rice Husk for Electrochemical Capacitor Application
Nanoporous carbons were prepared from rice husk (RH) according to a three-step procedure that includes pre-carbonization, silica removal and chemical activation. The surface area and pore structure of the nanoporous carbons are characterized intensively using N2 adsorption technique. The as-prepared carbons have specific surface area of up to 3283 m2/g, and total pore volume of up to 1.8 cm3/g. The effect of activating agent dosage on the pore structure of carbons was investigated and elucidated clearly. As evidenced by electrochemical measurements, the as-prepared carbons have good capacitive performances and their specific capacitances are much higher than ordered mesoporous carbon, thus highlighting the success of preparing high performance electrode material for EDLC from a biomass waste, rice husk.
Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He
W. Xing et al., "Nanoporous Carbon Derived from Rice Husk for Electrochemical Capacitor Application", Advanced Materials Research, Vols. 239-242, pp. 2101-2106, 2011