Hydrogen absorption and desorption properties of AB2 laves-phase pseudobinary compounds

Shaltiel, D.; Jacob, I.; Davidov, D.

doi:10.1016/0022-5088(77)90162-x

Cited by 381 publications

(92 citation statements)

References 4 publications

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“…The same trend has been observed with respect to H solution capacity [50]. Whilst H does not prefer to dissolve in the Laves phases containing the latter three elements (i.e.…”

Section: Phasesupporting

confidence: 78%

Hydrogen solubility in zirconium intermetallic second phase particles

Burr

Murphy

Lumley

et al. 2013

Journal of Nuclear Materials

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The enthalpies of solution of H in Zr binary intermetallic compounds formed with Cu, Cr, Fe, Mo, Ni, Nb, Sn and V were calculated by means of density functional theory simulations and compared to that of H in α-Zr. It is predicted that all Zr-rich phases (formed with Cu, Fe, Ni and Sn), and those phases formed with Nb and V, offer lower energy, more stable sites for H than α-Zr. Conversely, Mo and Cr containing phases do not provide preferential solution sites for H. In all cases the most stable site for H are those that offer the highest coordination fraction of Zr atoms. Often these are four Zr tetrahedra but not always. Implications with respect to H-trapping properties of commonly observed ternary phases such as Zr(Cr,Fe) 2 , Zr 2 (Fe,Ni) and Zr(Nb,Fe) 2 are also discussed.

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“…The same trend has been observed with respect to H solution capacity [50]. Whilst H does not prefer to dissolve in the Laves phases containing the latter three elements (i.e.…”

Section: Phasesupporting

confidence: 78%

Hydrogen solubility in zirconium intermetallic second phase particles

Burr

Murphy

Lumley

et al. 2013

Journal of Nuclear Materials

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“…PCT measurement has been used extensively in the study of Laves phase MH alloys reacting with hydrogen gas [64][65][66][67][68][69]. PCT isotherms measured at 30˝C and 60˝C for alloys Mg0-Mg5 are compared in Figure 3.…”

Section: Pressure-concentration-temperature Analysismentioning

confidence: 99%

Studies on Incorporation of Mg in Zr-Based AB2 Metal Hydride Alloys

Chang

Kim

Ouchi³

et al. 2016

Batteries

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Abstract:Mg, the A-site atom in C14 (MgZn 2 ), C15 (MgCu 2 ), and C36 (MgNi 2 ) Laves phase alloys, was added to the Zr-based AB 2 metal hydride (MH) alloy during induction melting. Due to the high melting temperature of the host alloy (>1500˝C) and high volatility of Mg in the melt, the Mg content of the final ingot is limited to 0.8 at%. A new Mg-rich cubic phase was found in the Mg-containing alloys with a small phase abundance, which contributes to a significant increase in hydrogen storage capacities, the degree of disorder (DOD) in the hydride, the high-rate dischargeability (HRD), and the charge-transfer resistances at both room temperature (RT) and´40˝C. This phase also facilitates the activation process in measurement of electrochemical discharge capacity. Moreover, through a correlation study, the Ni content was found to be detrimental to the storage capacities, while Ti content was found to be more influential in HRD and charge-transfer resistance in this group of AB 2 metal hydride (MH) alloys.

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“…The average electron density (e/a) of each alloy, based on the numbers of outer-shell electrons of the constituent elements, is listed in Table 5 and can be used to predict the dominant phase (C14 or C15) (Shaltiel, et al, 1977). The base alloy, AB2.0, is rich in C14 phase and a candidate for replacing AB 5 alloy in Ni/MH batteries.…”

Section: Stoichiometry In Laves Phase-based Ab 2 Metal Hydride Alloysmentioning

confidence: 99%

Stoichiometry in Inter-Metallic Compounds for Hydrogen Storage Applications

Young¹

2012

Stoichiometry and Materials Science - When Numbers Matter

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Hydrogen absorption and desorption properties of AB2 laves-phase pseudobinary compounds

Cited by 381 publications

References 4 publications

Hydrogen solubility in zirconium intermetallic second phase particles

Hydrogen solubility in zirconium intermetallic second phase particles

Studies on Incorporation of Mg in Zr-Based AB2 Metal Hydride Alloys

Stoichiometry in Inter-Metallic Compounds for Hydrogen Storage Applications

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