| 초록 |
With the rapid development of highly efficient and eco-friendly non-noble electrocatalysts for hydrogen production by water splitting, new opportunities are opening up for biomass-derived nanomaterials. Herein, We develop a “delignification-impregnation-carbonization” strategy to fabricate uniformly dispersed cobalt-embedding carbon nanotubes (CNTs) anchored on miscanthus x giganteus stalks. Because of raw miscanthus’s abundant micropore structure, the bulk catalyst electrode possess the hierarchical porous structure composed of micro/mesopores. This porous structure has large surface area which are beneficial to the exposure of active sites and rapid transportation. Consequently, the resultant electrocatalyst displays high bi-functional activity with an overpotential of ~350 mV toward OER and ~62 mV toward HER to reach the current density of 10 mA cm-2. This work provides a new way for pushing forward the direct conversion of non-useful biomass to efficient catalyst bulk electrode. |
