Hydrogen Desorption Properties of MgH2-5 at% Ti-Cr-Mn-Fe-V Composite Via Combined Vacuum Arc Remelting and Mechanical Alloying

Haghparast, M.R.; Rajabi, Mohammad

doi:10.1016/j.mspro.2015.11.091

Cited by 5 publications

(6 citation statements)

References 20 publications

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“…Ren et al [ 110 ] found that TiMn 2 could effectively improve the hydrogen storage performance of MgH 2 , and no phase change was found in the catalyst during the experiments. Later, catalysts, such as Ti-Mn-Cr [ 111 ] and Ti-Cr-Mn-Fe-V [ 112 ], were found to produce finer particles after mechanical alloying and, therefore, had greater activity. In addition, the improved dehydrogenation performance of MgH 2 may be related to a more uniform distribution of alloying elements [ 111 , 112 ].…”

Section: Improvement Of Hydrogen Storage Performance Of Mg/mgh ...mentioning

confidence: 99%

Hydrogen Storage Performance of Mg/MgH2 and Its Improvement Measures: Research Progress and Trends

Yang

Zhang

et al. 2023

Materials

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Due to its high hydrogen storage efficiency and safety, Mg/MgH2 stands out from many solid hydrogen storage materials and is considered as one of the most promising solid hydrogen storage materials. However, thermodynamic/kinetic deficiencies of the performance of Mg/MgH2 limit its practical applications for which a series of improvements have been carried out by scholars. This paper summarizes, analyzes and organizes the current research status of the hydrogen storage performance of Mg/MgH2 and its improvement measures, discusses in detail the hot studies on improving the hydrogen storage performance of Mg/MgH2 (improvement measures, such as alloying treatment, nano-treatment and catalyst doping), and focuses on the discussion and in-depth analysis of the catalytic effects and mechanisms of various metal-based catalysts on the kinetic and cyclic performance of Mg/MgH2. Finally, the challenges and opportunities faced by Mg/MgH2 are discussed, and strategies to improve its hydrogen storage performance are proposed to provide ideas and help for the next research in Mg/MgH2 and the whole field of hydrogen storage.

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Section: Improvement Of Hydrogen Storage Performance Of Mg/mgh ...mentioning

confidence: 99%

Hydrogen Storage Performance of Mg/MgH2 and Its Improvement Measures: Research Progress and Trends

Yang

Zhang

et al. 2023

Materials

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“…The MgH 2 system of the amorphous TiCu-based alloy catalyst has almost no degradation in the hydrogenation and dehydrogenation cycle at 300°C, and about 3.3 wt %H 2 can be absorbed in 200 min at room temperature. Haghparast et al [49] prepared MgH 2 -5at %TiCrMn 0.4 Fe 0.4 V 0.2 alloy composite by vacuum arc remelting. XRD diagram shows that the composite powder is mainly composed of β-MgH 2 , γ-MgH 2 and MgO.…”

Section: Ti-based Alloymentioning

confidence: 99%

Improvement of Mg‐Based Hydrogen Storage Materials by Metal Catalysts: Review and Summary

et al. 2021

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Magnesium hydride (MgH 2 ) has become a very promising hydrogen storage material because of its high hydrogen storage capacity, good reversibility and low cost. However, high thermodynamic stability and slow kinetic performance of MgH 2 limit its practical application. In the past few decades, many alternative methods have been designed to solve this problem. A large number of studies have demonstrated that the use of metal catalyst doping modification, MgH 2 nanocrystallization and other methods can greatly improve the hydrogen absorption and dehydrogenation performance of MgH 2 . Therefore, this paper reviews and summarizes the modification effect of transition metal catalyst doping on the hydrogen storage performance of MgH 2 , especially the catalysis on the de/rehydrogenation performance of MgH 2 . In addition, promoting effects of carbon materials, transition metal alloys and compounds on the hydrogen storage performance of MgH 2 were also summarized. Finally, the existing problems and challenges of MgH 2 as hydrogen storage materials are discussed, and some possible strategies are proposed.

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“…This suggests that the 4-day high-temperature treatment may also be sufficient for Mg 2 FeH 6 synthesis. The small amount of MgO present is the result of magnesium oxidation during the milling process [23,24]. The magnesium particles formed during the ball milling have more active surfaces, which can react with the residual oxygen in the glovebox, or with the adsorbed oxygen during the handling process.…”

Section: Purity Of Mg2feh6mentioning

confidence: 99%

In Situ Synchrotron X-ray Diffraction Studies of Hydrogen-Desorption Properties of 2LiBH4–Mg2FeH6 Composite

2021

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Adding a secondary complex metal hydride can either kinetically or thermodynamically facilitate dehydrogenation reactions. Adding Mg2FeH6 to LiBH4 is energetically favoured, since FeB and MgB2 are formed as stable intermediate compounds during dehydrogenation reactions. Such “hydride destabilisation” enhances H2-release thermodynamics from H2-storage materials. Samples of the LiBH4 and Mg2FeH6 with a 2:1 molar ratio were mixed and decomposed under three different conditions (dynamic decomposition under vacuum, dynamic decomposition under a hydrogen atmosphere, and isothermal decomposition). In situ synchrotron X-ray diffraction results revealed the influence of decomposition conditions on the selected reaction path. Dynamic decomposition of Mg2FeH6–LiBH4 under vacuum, or isothermal decomposition at low temperatures, was found to induce pure decomposition of LiBH4, whilst mixed decomposition of LiBH4 + Mg and formation of MgB2 were achieved via high-temperature isothermal dehydrogenation.

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Hydrogen Desorption Properties of MgH2-5 at% Ti-Cr-Mn-Fe-V Composite Via Combined Vacuum Arc Remelting and Mechanical Alloying

Cited by 5 publications

References 20 publications

Hydrogen Storage Performance of Mg/MgH2 and Its Improvement Measures: Research Progress and Trends

Hydrogen Storage Performance of Mg/MgH2 and Its Improvement Measures: Research Progress and Trends

Improvement of Mg‐Based Hydrogen Storage Materials by Metal Catalysts: Review and Summary

In Situ Synchrotron X-ray Diffraction Studies of Hydrogen-Desorption Properties of 2LiBH4–Mg2FeH6 Composite

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