Synthesis of activated carbon derived from rice husks for improving hydrogen storage capacity

In this work, we prepared activated carbon derived from rice husks (RHC) using chemical activation with KOH ratio. The results showed that significant increase in specific surface area and optimum pore size for hydrogen storage of RHC by KOH activation. Then, it was interesting note to that the best hydrogen storage capacity of 2.85 wt.% was observed in the RHC1 sample (KOH ratio of 1). The hydrogen storage capacity was strongly influenced by the nanometered size distribution and micropore volume than the specific surface area or total pore volume.

Graphical abstractHydrogen storage capacity of RHC samples as a function of KOH amount.Figure optionsDownload full-size imageDownload as PowerPoint slide