Cost-effective mechanochemical synthesis of highly dispersed supported transition metal catalysts for hydrogen storage
Publication Name
Nano Energy
Abstract
Here, we demonstrate a quasi-solid-state template strategy to synthesis highly dispersed supported metal catalysts on nitrogen-doped carbon (M-N-C) with a large fraction of single atom Ni species, in which dispersion of metal precursor, evaporation of solvent and downsizing of templates can be simultaneously achieved during the one-step ball-milling process. The incorporation of such nickel-based catalysts into MgH greatly improved the kinetics with the reduced activation energy of 87.2 ± 5.4 kJ mol (156.5 ± 3.2 kJ mol for blank). The versatility of this method is confirmed by the successful synthesis of the whole series of 3d transition elements (Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu and Zn) and La, Ce. The kinetic enhancement of their MgH integrated composites lies on these elements’ electronegativity which determines the dispersity of metal atoms and the strength of metal-hydrogen interaction. 2 2 −1 −1
Open Access Status
This publication is not available as open access
Volume
80
Article Number
105535
Funding Number
51871123
Funding Sponsor
National Natural Science Foundation of China