Magnesium is considered one of the most promising materials for reversible hydrogen storage, because it has high storage capacity. However, the high thermodynamic stability of magnesium hydride is unfavorable for dehydrogenation processes. Understanding the bonding nature of Mg and H is essential for improving its dehydrogenation performance. Therefore, the charge density distribution in MgH2 w...

Carbon materials play an important role in the development of solid hydrogen storage materials. The main purpose this work is to study low-cost synthesis biomass carbon (BC) and its positive effect on behavior magnesium hydride (MgH2). Herein, it proven that when used together with (MgH2), can be as adsorption desorption channel for hydrogen. initial dehydrogenation temperature MgH2 + 10 wt% BC...

An ultrathin angle-insensitive color filter enabling high saturation and a wide gamut is proposed by relying on magnesium hydride-hydrogenated amorphous silicon (MgH2-a-Si:H) lossy dielectric layer. Based effective medium theory, the MgH2-a-Si:H layer with an thickness can be equivalent to quasi-homogeneous complex refractive index, which tuned altering of MgH2 obtain targeted value imaginary p...

Because of its low density, storage of hydrogen in the gaseous and liquids states possess technical and economic challenges. One practical solution for utilizing hydrogen in vehicles with proton-exchange fuel cells membranes is storing hydrogen in metal hydrides. Magnesium hydride (MgH2) remains the best hydrogen storage material due to its high hydrogen capacity and low cost of production. Due...

It is observed that large quantities of hydrogen (H2) are released at ambient temperatures during the mechano-chemical synthesis of the Li-Al-N-Mg-based hydride composites using an energetic ball milling in a unique magneto-mill. For the (nLiAlH4+LiNH2; n=1, 3, 11.5, 30) composite, at the molar ratio n=1, the LiNH2 constituent destabilizes LiAlH4 and enhances its decomposition to Li3AlH6, Al an...

A protocol for the synthesis of α-alkynylnitrones from 1,3-enynes has been developed. The process is triggered by hydromagnesiation with magnesium hydride (MgH2), which prepared in situ through solvothermal treatment iodide (MgI2) sodium (NaH) tetrahydrofuran. Downstream functionalization resulting propargylmagnesium intermediates organo nitro compounds affords α-alkynylnitrones, could be used ...

The hydrogen storage performance of ball-milled MgH2 with 5 wt.% NbF5 + 5 wt.% single-walled carbon nanotubes as additives was investigated. We found that the hydrogen-sorption kinetics of magnesium is markedly improved by these co-additives. At 573 K, this hydride can absorb 6.3 wt.% hydrogen within 30 s. Even at 373 K, 5.2 wt.% of hydrogen can be absorbed within 10 min. This enhanced hydrogen...

The current study highlights important information regarding how graphene oxide (GO) additive interacts with magnesium hydride (MgH2) and transforms to reduced (rGO). A mild reduction occurs during mechanical milling itself, whereas a strong of GO happens concurrently the oxidation Mg formed dehydrogenation MgH2. Owing in situ transformation rGO, temperature MgH2 reduces by about 60 °C, hydroge...

As an efficient hydrogen storage material, magnesium hydride (MgH2) has a high capacity of 7.6 wt%. However, its performance deteriorates because thermodynamic and kinetic temperatures the fast agglomeration nanocrystals during uptake release process. The exploration catalysts is popular, but currently challenging, topic. Therefore, we successfully prepared flake-like molybdenum (Mo) doped them...

Realizing rapid and stable hydrogen sorption at low temperature is critical for magnesium-based storage materials. Herein, liquid channels are built in magnesium hydride by introducing lithium borohydride ion conductors as an efficient route improving its sorption. For instance, the 5 wt% LiBH4-doped MgH2 can release about 7.1 wt.% H2 within 40 min 300 °C but pure only desorbs less than 0.7 H2,...