Increase in H2 storage capacity of nanoporous carbon fabricated from waste rice husk via improving the mode of the reaction mixture cooling down
| Autor: | Ikumi Toda, Keiji Komatsu, Jie Zhu, Yukino Kanma, Heng Li, Yoshinori Tsuda, Hidetoshi Saitoh |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Pore size
Materials science 02 engineering and technology 01 natural sciences Husk Biomaterials Hydrogen storage Rice husk Nanoporous carbon Specific surface area 0103 physical sciences parasitic diseases Alkali activation treatment Rapid cooling KOH 010302 applied physics Mining engineering. Metallurgy Metals and Alloys TN1-997 021001 nanoscience & nanotechnology Surfaces Coatings and Films Chemical engineering Ceramics and Composites 0210 nano-technology Cooling down |
| Zdroj: | Journal of Materials Research and Technology, Vol 12, Iss, Pp 1203-1211 (2021) |
| ISSN: | 2238-7854 |
| Popis: | Nanoporous carbon (NPC) with high hydrogen storage capacity was fabricated from rice husk. The rice husk was activated using KOH, and the cooling step during the KOH activation process was varied. The specific surface areas, pore size distributions, and hydrogen storage capacities of the fabricated NPC samples were determined. We found that while the specific surface area did not change with the choice of the cooling process, the pore size distribution did. Furthermore, in the case of rapid cooling, the maximum hydrogen storage capacity at 77 K was 7.2 wt%, while that for natural cooling was 5.5 wt%. Thus, it can be concluded that the cooling procedure used during the KOH activation process determines the hydrogen storage properties of the thus-fabricated NPC materials. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|