High hydrogen storage capacity of rice hull based porous carbon

• Published in: International journal of hydrogen energy Vol. 37; no. 24; pp. 18888 - 18894
• Main Authors: Chen, Haibin, Wang, Haibo, Xue, Zhiping, Yang, Lufeng, Xiao, Yong, Zheng, Mingtao, Lei, Bingfu, Liu, Yingliang, Sun, Lixian
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.12.2012; Elsevier
• Subjects: Alternative fuels. Production and utilization; Applied sciences; Carbon; Energy; Exact sciences and technology; Fourier transforms; Fuels; Hulls; Hulls (structures); Hydrogen; Hydrogen storage; Infrared spectroscopy; Porous carbon; Rice; Rice hull; Scanning electron microscopy; Sodium hydroxide activation; Rice hull; Hydrogen storage; Porous carbon; Sodium hydroxide activation; Storage capacity; Hydrogen; Activation
• ISSN: 0360-3199; 1879-3487
• DOI: 10.1016/j.ijhydene.2012.09.035

A kind of porous carbon with high specific surface area (approximately 4000 m2/g) was prepared from rice hull through carbonization and sodium hydroxide activation. The effects of preparation parameters on the characteristics of the porous carbon were studied. The properties of these porous carbon samples were investigated by X-ray diffraction and scanning electron microscope (SEM) and Fourier transform infrared spectroscopy. The rice hull based porous carbon exhibits high hydrogen storage capacity of 7.7 wt% at 77 K and 1.2 MPa. ► The porous carbon was prepared from rice hull by NaOH activation. ► Its BET surface area achieve to 3969 m2/g. ► Its hydrogen storage reach to 7.7 wt% at 77 K and 1.2 MPa.