Enhancing Hydrogen Storage Properties of Metal Hybrides

Huot, Jacques

doi:10.1007/978-3-319-35107-0

Cited by 12 publications

(9 citation statements)

References 26 publications

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“…The smearing of alloy in the bowl and balls during ball milling changes the actual content of Mg and Ni. During the dry ball milling process, the mechanical action of repeated fractures and welding of elemental Mg and Ni forces interdiffusion of Mg and Ni 28 . The powder particles cold‐welded, mainly when they are ductile due to strong plastic deformation and local increase in temperature during the milling process resulting in sticking of alloy in the vial and balls 27 .…”

Section: Resultsmentioning

confidence: 99%

“…The particle size and the effective surface area are the important parameters that significantly affect the hydrogen storage properties. It has been reported in the literature that ball milling increases the surface area, volume fraction of grain boundaries, and induces defects that promote hydrogen absorption and desorption characteristics 26‐29 . In some of the studies, the researcher found that the addition of Mg 2 Ni to Mg during milling improves the absorption and desorption properties of Mg and reduces its absorption and desorption temperature 30‐32 .…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of Mg₂Ni using stoichiometric and superstoichiometric compositions for hydrogen storage applications

2021

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A Mg2Ni intermetallic compound was synthesized through a mechanochemical route using both stoichiometric and slightly superstoichiometric mixtures of Mg and Ni. The former composition was processed by mechanical alloying, followed by annealing, while the latter composition using high‐energy ball milling. X‐ray diffraction (XRD) and scanning electron microscopy (SEM) was used to examine the effect of the annealing temperature and holding time on the phase abundance and surface morphology. The sample with a stoichiometric ratio of Mg and Ni was ball‐milled under the argon atmosphere for 20 hours. The XRD pattern for this unannealed ball‐milled alloy had no evidence of Mg2Ni phase formation. Mg2Ni phase formation was obtained on subsequent heat treatment of the sample. The heat treatment parameters, such as annealing temperature and holding time, were optimized to get the maximum yield of Mg2Ni. The optimum temperature for annealing was found to be 480°C, with a holding time of 1 hour, and the phase abundance under these conditions of Mg2Ni was 52.9%. The yield of Mg2Ni increased with holding time. For 10 hours of holding time, the optimal yield of Mg2Ni (66.9%) was achieved. In the superstoichiometric ratio of Mg and Ni, the Mg2Ni phase was obtained in only 5 hours using high‐energy ball milling. The microstructure of alloy synthesized under an optimal set of conditions was studied using SEM.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis of Mg₂Ni using stoichiometric and superstoichiometric compositions for hydrogen storage applications

2021

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“…Microstructure modifications via mechanical processes (ball milling [37][38][39][40][41], cold rolling [42], high-pressure torsion (HPT) [43], or equal channel angular pressing [44]) can improve the sorption properties of hydride materials. Nevertheless, this enhancement is only temporary due to the unavoidable growth and agglomeration phenomena occurring during dehydrogenation-rehydrogenation cycling.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Hydrogen Storage Properties of Li-RHC System with In-House Synthesized AlTi3 Nanoparticles

Pistidda

Puszkiel

et al. 2021

Energies

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In recent years, the use of selected additives for improving the kinetic behavior of the system 2LiH + MgB2 (Li-RHC) has been investigated. As a result, it has been reported that some additives (e.g., 3TiCl3·AlCl3), by reacting with the Li-RHC components, form nanostructured phases (e.g., AlTi3) possessing peculiar microstructural properties capable of enhancing the system’s kinetic behavior. The effect of in-house-produced AlTi3 nanoparticles on the hydrogenation/dehydrogenation kinetics of the 2LiH + MgB2 (Li-RHC) system is explored in this work, with the aim of reaching high hydrogen storage performance. Experimental results show that the AlTi3 nanoparticles significantly improve the reaction rate of the Li-RHC system, mainly for the dehydrogenation process. The observed improvement is most likely due to the similar structural properties between AlTi3 and MgB2 phases which provide an energetically favored path for the nucleation of MgB2. In comparison with the pristine material, the Li-RHC doped with AlTi3 nanoparticles has about a nine times faster dehydrogenation rate. The results obtained from the kinetic modeling indicate a change in the Li-RHC hydrogenation reaction mechanism in the presence of AlTi3 nanoparticles.

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“…Mechanical deformation techniques including BM, cold rolling (CR), high-pressure torsion (HPT), and equal channel angular pressure (ECAP) are efficient in reducing crystallite size and introducing defects in materials, which improve the hydrogenation kinetics [ 28 ]. Among these deformation techniques, CR can be considered more promising from an industrial point of view due to its simplicity and easy scalability [ 29 , 30 , 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of First Hydrogenation of Ti1V0.9Cr1.1 BCC Alloy by Cold Rolling and Ball Milling

2020

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In this study, we evaluated the effects of a mechanical treatment by cold rolling (CR) and ball milling (BM) on the first hydrogenation of Ti1V0.9Cr1.1 alloy. The as-cast alloy has a body-centered cubic (BCC) crystal structure, and the first hydrogenation at room temperature under 20 bars of hydrogen is practically impossible. However, the samples mechanically activated by CR or BM readily absorbed hydrogen. The sample cold-rolled for one pass exhibited faster kinetics than the sample ball-milled for five minutes, but both samples reached the same storage capacity of 3.6 wt % hydrogen. Increasing the amount of rolling or the milling time decreased the hydrogen capacity. CR is considered the best and most efficient method for the activation of Ti1V0.9Cr1.1 alloy.

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Enhancing Hydrogen Storage Properties of Metal Hybrides

Abstract: The main characteristics of ball milling are exposed. Different types of materials that could be synthesized by ball milling are discussed. We conclude with the effect of ball milling on hydrogen storage properties.

Cited by 12 publications

References 26 publications

Synthesis of Mg₂Ni using stoichiometric and superstoichiometric compositions for hydrogen storage applications

Synthesis of Mg₂Ni using stoichiometric and superstoichiometric compositions for hydrogen storage applications

Enhanced Hydrogen Storage Properties of Li-RHC System with In-House Synthesized AlTi3 Nanoparticles

Enhancement of First Hydrogenation of Ti1V0.9Cr1.1 BCC Alloy by Cold Rolling and Ball Milling

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Enhancing Hydrogen Storage Properties of Metal Hybrides

Abstract: The main characteristics of ball milling are exposed. Different types of materials that could be synthesized by ball milling are discussed. We conclude with the effect of ball milling on hydrogen storage properties.

Cited by 12 publications

References 26 publications

Synthesis of Mg2Ni using stoichiometric and superstoichiometric compositions for hydrogen storage applications

Synthesis of Mg2Ni using stoichiometric and superstoichiometric compositions for hydrogen storage applications

Enhanced Hydrogen Storage Properties of Li-RHC System with In-House Synthesized AlTi3 Nanoparticles

Enhancement of First Hydrogenation of Ti1V0.9Cr1.1 BCC Alloy by Cold Rolling and Ball Milling

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Synthesis of Mg₂Ni using stoichiometric and superstoichiometric compositions for hydrogen storage applications

Synthesis of Mg₂Ni using stoichiometric and superstoichiometric compositions for hydrogen storage applications