For the few past decades, study of new hydrogen storage materials has been captivating scientists worldwide. Magnesium hydride, MgH2, is considered one most promising due to its low cost, high capacity, reversibility and abundance Mg. However, it requires further research improve performance as some drawbacks such poor dehydrogenation kinetic, operational temperature, which limit practical appl...

The state of the art of conversion reactions of metal hydrides (MH) with lithium is presented and discussed in this review with regard to the use of these hydrides as anode materials for lithium-ion batteries. A focus on the gravimetric and volumetric storage capacities for different examples from binary, ternary and complex hydrides is presented, with a comparison between thermodynamic predict...

Magnesium is an attractive hydrogen storage candidate due to its high gravimetric and volumetric capacities (7.6 wt.% 110 gH2/l, respectively). Unfortunately, use as a material for hampered by the stability of hydride, dissociation temperature 573–673 K slow reaction kinetics. In order overcome those drawbacks, important advancement toward controlling enthalpy desorption temperatures nano-struc...

A 90 wt.% MgH2 – 10 wt.% V2O5 composite was obtained by ball milling of a mixture of magnesium hydride and vanadia for 60 min under argon. Hydrogen sorption properties of the composite were determined volumetrically with a Sieverts-type device. Absorption was studied at temperatures of 473 and 573 K and pressure of 1 MPa, while desorption was investigated at T = 573 and 623 K and P = 0.15 MPa. ...

Abstract Rocket fuels are subjected to intense in-flight inertial, pressure and thermal loads that has drastic effect on its performance. In order achieve optimal results, we require functionally-graded solid propellant (FGSPs), specifically designed for each flight condition. A novel series of FGSPs were developed using Paraffin Wax (as fuel) Hydroxyl-terminated polybutadiene binder); treated ...

One practical solution for utilizing hydrogen in vehicles with proton-exchange fuel cells membranes is storing hydrogen in metal hydrides nanocrystalline powders. According to its high hydrogen capacity and low cost of production, magnesium hydride (MgH2) is a desired hydrogen storage system. Its slow hydrogenation/dehydrogenation kinetics and high thermal stability are the major barriers restr...

In the present work we systematically studied hydrolysis of magnesium hydride in MgCl2 aqueous solutions, which was used as a process promotor. The initial rate, pH reaction mixture, and overall yield are all found to be linearly dependent logarithm concentration. phase-structural elemental compositions formed precipitates showed that they do not contain chlorine ions solely consist Mg(OH)2. si...

Magnesium hydride is considered to be one of the most promising hydrogen storage materials, although it nevertheless has some problems, such as high value activation energy desorption. To solve this problem, scientists have proposed adding nanocarbon in particular carbon nanotubes, magnesium hydride. Currently, a detailed understanding mechanisms obtaining composites based on and nanotubes lack...

A safe and efficient method for storing hydrogen is solid state storage through a chemical reaction in metal hydrides. A good amount of research has been conducted on hydrogenation properties of metal hydrides and possible methods to improve them. Background research shows that heat transfer is one of the reaction rate controlling parameters in a metal hydride hydrogen storage system. Consideri...