| Partner: Hao Fan |
Ostatnie publikacje
| 1. | Nwaji N., Fikadu B.♦, Osial M., Gicha B.B.♦, Warczak M.♦, Fan H.♦, Lee J.♦, Giersig M., Atomically dispersed ruthenium in transition metal double layered hydroxide as a bifunctional catalyst for overall water splitting, RENEWABLE ENERGY, ISSN: 0960-1481, DOI: 10.1016/j.renene.2024.121307, Vol.235, pp.1-10, 2024 Streszczenie: Efficient and sustainable energy conversion depends on the rational design of single-atom catalysts. The control of the active sites at the atomic level is vital for electrocatalytic materials in alkaline and acidic electrolytes. Moreover, fabrication of effective catalysts with a well-defined surface structure results in an in-depth understanding of the catalytic mechanism. Herein, a single atom ruthenium dispersed in nickel-cobalt layered hydroxide (Ru-NiCo LDH) is reported. Through the precise controlling of the atomic dispersion and local coordination environment, Ru-NiCo LDH//Ru-NiCo LDH provides an ultra-low overpotential of 1.45 mV at 10 mA cm−2 for the overall water splitting, which surpasses that of the state-of-the-art Pt/C/RuO2 redox couple. Density functional theory calculations show that Ru-NiCo LDH optimizes hydrogen evolution intermediate adsorption energies and promotes O-O coupling at a Ru-O active site for oxygen evolution, while Ni serves as the water dissociation site for effective water splitting. As a potential model, Ru-NiCo LDH shows enhanced water splitting performance with potential for the development of promising water-alkaline catalysts. Afiliacje autorów:
|  | 140p. |