Mg3Mm compound based hydrogen storage materials

Ouyang, Liuzhang; Dong, Hanwu; Zhu, Min

doi:10.1016/j.jallcom.2007.02.160

Cited by 31 publications

(6 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This peak corresponds to magnesium hydride MgH 2 . It is surprising that no additional hydrides are detected, although it has been reported that various hydrides may be formed in Mg-Ni-Mm-H system, such as Mg 2 NiH 4 , MmH 3 , Mg 2 MmNiH 7 and other [7,15]. One explanation may be low volume fractions of these hydrides, due to the low concentration of mishmetal in the alloy, low specific surface of the alloy and short hydriding time.…”

Section: Hydrogen Concentrationsmentioning

confidence: 99%

Hydrogen storage by direct electrochemical hydriding of Mg-based alloys

Vojtěch

Guhlová

Morťaniková

et al. 2010

Journal of Alloys and Compounds

View full text Add to dashboard Cite

Section: Hydrogen Concentrationsmentioning

confidence: 99%

Hydrogen storage by direct electrochemical hydriding of Mg-based alloys

Vojtěch

Guhlová

Morťaniková

et al. 2010

Journal of Alloys and Compounds

View full text Add to dashboard Cite

“…Ouyang et al prepared a series of Mg 3 RE (RE = La [34], Pr [35], Nd [36], and mischmetals [37]) alloys by induction melting. All of the alloys could absorb hydrogen at room temperature with rapid hydrogenation/dehydrogenation kinetics.…”

Section: Progress In Improving the Hydrogen Absorption/desorption mentioning

confidence: 99%

“…In situ formation of a nanocomposite, in which catalyst phases are involved, is another efficient way of improving the kinetics of Mg-based alloys. Ouyang et al prepared a series of Mg 3 RE (RE = La [ 34 ], Pr [ 35 ], Nd [ 36 ], and mischmetals [ 37 ]) alloys by induction melting. All of the alloys could absorb hydrogen at room temperature with rapid hydrogenation/dehydrogenation kinetics.…”

Section: Progress In Improving the Hydrogen Absorption/desorption mentioning

confidence: 99%

Thermodynamic Tuning of Mg-Based Hydrogen Storage Alloys: A Review

et al. 2013

View full text Add to dashboard Cite

Mg-based hydrides are one of the most promising hydrogen storage materials because of their relatively high storage capacity, abundance, and low cost. However, slow kinetics and stable thermodynamics hinder their practical application. In contrast to the substantial progress in the enhancement of the hydrogenation/dehydrogenation kinetics, thermodynamic tuning is still a great challenge for Mg-based alloys. At present, the main strategies to alter the thermodynamics of Mg/MgH2 are alloying, nanostructuring, and changing the reaction pathway. Using these approaches, thermodynamic tuning has been achieved to some extent, but it is still far from that required for practical application. In this article, we summarize the advantages and disadvantages of these strategies. Based on the current progress, finding reversible systems with high hydrogen capacity and effectively tailored reaction enthalpy offers a promising route for tuning the thermodynamics of Mg-based hydrogen storage alloys.

show abstract

“…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]. Mg-containing compounds [18][19][20][21][22] such as La 2 Mg 16 Ni [23], LaMg 12 and La 2 Mg 17 [24], Mg 3 Mm (Mm: misch-metal) [25], and Mg 17 Al 12 [26] were synthesized for the same purposes.…”

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

View full text Add to dashboard Cite

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%.

show abstract

Mg3Mm compound based hydrogen storage materials

Cited by 31 publications

References 17 publications

Hydrogen storage by direct electrochemical hydriding of Mg-based alloys

Hydrogen storage by direct electrochemical hydriding of Mg-based alloys

Thermodynamic Tuning of Mg-Based Hydrogen Storage Alloys: A Review

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

Contact Info

Product

Resources

About