Extraordinarily high hydrogen-evolution-reaction activity of corrugated graphene nanosheets derived from biomass rice husks |
| |
Affiliation: | 1. Department of Semiconductor Science, Dongguk University-Seoul, Seoul, 04620, Republic of Korea;2. Quantum-functional Semiconductor Research Center, Dongguk University-Seoul, Seoul, 04620, Republic of Korea |
| |
Abstract: | The metal-free carbonaceous catalysts are one of the promising candidates for efficient electrocatalytic hydrogen production. Aiming at demonstrating the high electrocatalytic activity of the hydrogen evolution reaction (HER), we synthesized the biomass rice husk-derived corrugated graphene (RH-CG) nanosheets via the KOH activation. The 700 °C-activated RH-CG nanosheets exhibited the large specific surface area as well as the high electrical conductivity. When using the RH-CG nanosheets as a HER electrocatalyst in 0.5 M H2SO4, the excellent HER activities with a small overpotential (9 mV at 10 mA/cm2) and a small Tafel slope (31 mV/dec) were achieved. The results provide a new strategy for materializing the superb biomass-derived electrocatalyst for highly efficient hydrogen production. |
| |
Keywords: | Biomass Rice husk Graphene Nanosheets Electrocatalysts Hydrogen evaluation reaction |
本文献已被 ScienceDirect 等数据库收录! |
|