Effects of thermal activation conditions on the microstructure regulation of corncob-derived activated carbon for hydrogen storage
作者： Dabin Wang , Zhen Geng , Cunman Zhang , Xiangyang Zhou , Xupeng Liu
DOI: 10.1016/S2095-4956(14)60190-X
关键词:
摘要: Abstract Activated carbons derived from corncob (CACs) were prepared by pyrolysis carbonization and KOH activation. Through modifying activation conditions, samples with large pore volume ultrahigh BET specific surface area could be obtained. The sample achieved the highest hydrogen uptake capacity of 5.80 wt% at 40 bar −196 °C. as-obtained characterized N 2 -sorption, transmission electron microscopy (TEM) scanning (SEM). Besides, thermogravimetric analysis was also employed to investigate behavior CACs. Detailed investigation on parameters reveals that moderate temperature heating rate are favorable for preparing CACs high area, optimal size distribution. Meanwhile, micropore between 0.65 nm 0.85 along total has great effects capacities. present results indicate most promising materials storage application.
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