Interface effect in sandwich like Ni/Ti3C2 catalysts on hydrogen storage performance of MgH2

Improved H-Storage Performance of Novel Mg-Based Nanocomposites Prepared by High-Energy Ball Milling: A Review

“…The common key feature of these systems is the combination of different catalytic mechanisms through introducing different types of additives. It is also worth mentioning that the extent of the synergistic effect depends on the preparation conditions of the catalysts and the composite, as was shown in refs [109,112,132,134].…”

“…These improvements can be attributed to the synergistic effect of Co and TiO 2 , i.e., Co can destabilize the MgH 2 owing to the higher strength of the Co-H bonds than that of Mg-H; meanwhile, the electrons from the conduction band of TiO 2 migrate to the Co, and as a result of the interaction of Hwith the resulting holes, facilitate the recombination reaction. Another investigation was conducted on the catalytic performance of sandwich-like Ni/Ti 3 C 2 in MgH 2 , where an electron transfer was observed between Ni and Ti 3 C 2 [132]. The numerous interfaces presented by the catalyst and its altered electronic state can effectively facilitate the hydrogen absorption/desorption processes.…”

“…Catalysts with layered structures were also applied to improve the sorption properties of MgH 2 , for example, TiVO 3.5 , with a multilayered structure, was shown to considerably decrease the absorption/desorption temperature (e.g., the dehydrogenation temperature reduced by 75 • C) and the activation energy (59% reduction compared to pristine MgH 2 ) [41]. Another investigation presented a Ni/Ti 3 C 2 additive with a sandwich-like structure fabricated by modified wet chemical synthesis [132]. Fast hydrogen sorption and good cyclic stability were observed for MgH 2 catalyzed by the sandwich-like Ni/Ti 3 C 2 .…”

Materials Research Directions Towards a Green Hydrogen Economy: A Review

“…109 Ti3C2 and Ni/Ti3C2 serve as dehydrogenation catalysts for metal hydrides. 110 A recent study on hydrogen physisorption on AM-2DSnC (AM = Li, Na, and K) complexes reported that the K-2D SnC monolayer has the highest hydrogen-storage capacity with one potassium atom adsorbing up to 6 hydrogen molecules, followed by Na-2D SnC with 5 hydrogen molecules and Li-2D SnC with 3 hydrogen molecules; demonstrating the possibility of these complexes overcoming the US-DOE recommended target of 5.5 wt% for onboard automotive systems. 111 Bilayer hexagonal boron nitride (h-BN) shows a trend of decreasing binding energies and desorption temperatures that is useful for potential H2 storage.…”

Increasing the Adherence of Metallic Copper to the Surface of Titanium Hydride

“…The analysis of the available research in this direction [3,4,14] showed that the regulation of the conditions for the production (pressure and temperature conditions) of spherical titanium hydride granules does not solve the problem of the formation of surface microcracks. The most promising method is to "heal" microcracks by artificially creating a multi-barrier system of energy "traps" on the surface of the granule, which makes it possible to slow down the processes of thermal diffusion of hydrogen from the crystal lattice of titanium hydride at high temperatures and protect titanium from oxidation [5,[15][16][17][18][19][20][21][22][23][24][25].…”