Increase in the dehydrogenation rates and hydrogen-storage capacity of Mg-graphene composites by adding nickel via reactive ball milling

Song, Myoung Youp; Choi, Eunho; Kwak, Young Jun

doi:10.1016/j.materresbull.2020.110938

Cited by 10 publications

(4 citation statements)

References 39 publications

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“…21,22 Nanocrystalline and amorphous alloys in which the elements are homogeneously distributed can be synthesized in many ways including melt spinning and mechanical milling. 23,24 Huang et al 25 prepared an amorphous and nanocrystalline (Mg 60 Ni 25 ) 90 Nd 10 alloy by melt-spinning which achieved a maximum discharge capacity of 580 mA h g À1 . Spassov et al 19 reported that for the melt-spun nanocrystalline/amorphous Mg 75 Ni 20 Mm 5 alloy (Mm ¼ Ce, La-rich mischmetal), Mm apparently improved the hydrogen absorption capacity.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen storage behavior of nanocrystalline and amorphous Mg–Ni–Cu–La alloys

et al. 2020

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Section: Introductionmentioning

confidence: 99%

Hydrogen storage behavior of nanocrystalline and amorphous Mg–Ni–Cu–La alloys

et al. 2020

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“…The reactive mechanical milling of Mg with Ni, TaF 5 , and VCl 3 is thought to increase the hydriding and dehydriding rates by forming defects [35][36][37][38] (leading to easier nucleation) [39][40][41], making new clean surfaces (leading to an increase in the reactivity of Mg particles with hydrogen) [30,42], and decreasing the particle size of Mg (leading to a decrease in the diffusion distances of hydrogen atoms) [9,10,[36][37][38]43]. Especially, the added Ni is believed to form the Mg 2 Ni phase, which has higher hydriding and dehydriding rates than Mg at the same conditions [36,44], contributing greatly to the increases in the reaction rates.…”

Section: Discussionmentioning

confidence: 99%

“…To increase the hydrogen uptake and release rates of magnesium, magnesium (Mg), or magnesium hydride (MgH 2 ) was alloyed [2][3][4][5][6][7][8][9][10] with Ni and Y [11], V [12], and Nb [13]. In addition, Mg or MgH 2 was mixed with compounds such as LaNi 5 [14], FeTi and FeTiMn [15], Nb 2 O 5 [16], and La 2 O 3 [17].…”

Section: Introductionmentioning

confidence: 99%

Improvement in Hydriding and Dehydriding Features of Mg–TaF5–VCl3 Alloy by Adding Ni and x wt% MgH2 (x = 1, 5, and 10) Together with TaF5 and VCl3

Kwak

Song

2021

Micromachines

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In our previous work, TaF5 and VCl3 were added to Mg, leading to the preparation of samples with good hydriding and dehydriding properties. In this work, Ni was added together with TaF5 and VCl3 to increase the reaction rates with hydrogen and the hydrogen-storage capacity of Mg. The addition of Ni together with TaF5 and VCl3 improved the hydriding and dehydriding properties of the TaF5 and VCl3-added Mg. MgH2 was also added with Ni, TaF5, and VCl3 and Mg-x wt% MgH2-1.25 wt% Ni-1.25 wt% TaF5-1.25 wt% VCl3 (x = 0, 1, 5, and 10) were prepared by reactive mechanical milling. The addition of MgH2 decreased the particle size, lowered the temperature at which hydrogen begins to release rapidly, and increased the hydriding and dehydriding rates for the first 5 min. Adding 1 and 5 wt% MgH2 increased the quantity of hydrogen absorbed for 60 min, Ha (60 min), and the quantity of hydrogen released for 60 min, Hd (60 min). The addition of MgH2 improved the hydriding–dehydriding cycling performance. Among the samples, the sample with x = 5 had the highest hydriding and dehydriding rates for the first 5 min and the best cycling performance, with an effective hydrogen-storage capacity of 6.65 wt%.

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“…Furthermore, ball milling graphenes/graphenes oxide with modifiers is widely employed to prepare novel composites. N-functional groups [130], nickel-based metal-organic framework [131], Ti [132], Fe/Co/N [133], Mg/Ni [134], Si [135] and NiO [136] were introduced to graphenes by a ball milling route, while CuS [137], TiO 2 [138], SnO 2 -MoO 2 [139], and indium tin oxides [140] were loaded on the surfaces of graphene oxides mechanically. Furthermore, ball milling graphene oxides in an Ar atmosphere was used to produce reduced graphene oxides by introducing defects and reducing oxygen functional groups [141].…”

Section: Ball-milled Graphene-based Materialsmentioning

confidence: 99%

Recent Advances in Ball-Milled Materials and Their Applications for Adsorptive Removal of Aqueous Pollutants

Gao,

Fan,

Sun

et al. 2024

Water

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Ball milling, as a cost-effective and eco-friendly approach, has been popular in materials synthesis to solve problems involving toxic reagents, high temperatures, or high pressure, which has the potential for large-scale production. However, there are few reviews specifically concentrating on the latest progress in materials characteristics before and after ball milling as well as the adsorptive application for aqueous pollutants. Hence, this paper summarized the principle and classification of ball milling and reviewed the advances of mechanochemical materials in categories as well as their adsorption performance of organic and inorganic pollutants. Ball milling has the capacity to change materials’ crystal structure, specific surface areas, pore volumes, and particle sizes and even promote grafting reactions to obtain functional groups to surfaces. This improved the adsorption amount, changed the equilibrium time, and strengthened the adsorption force for contaminants. Most studies showed that the Langmuir model and pseudo-second-order model fitted experimental data well. The regeneration methods include ball milling and thermal and solvent methods. The potential future developments in this field were also proposed. This work tries to review the latest advances in ball-milled materials and their application for pollutant adsorption and provides a comprehensive understanding of the physicochemical properties of materials before and after ball milling, as well as their effects on pollutants’ adsorption behavior. This is conducive to laying a foundation for further research on water decontamination by ball-milled materials.

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Increase in the dehydrogenation rates and hydrogen-storage capacity of Mg-graphene composites by adding nickel via reactive ball milling

Cited by 10 publications

References 39 publications

Hydrogen storage behavior of nanocrystalline and amorphous Mg–Ni–Cu–La alloys

Hydrogen storage behavior of nanocrystalline and amorphous Mg–Ni–Cu–La alloys

Improvement in Hydriding and Dehydriding Features of Mg–TaF5–VCl3 Alloy by Adding Ni and x wt% MgH2 (x = 1, 5, and 10) Together with TaF5 and VCl3

Recent Advances in Ball-Milled Materials and Their Applications for Adsorptive Removal of Aqueous Pollutants

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