Thermodynamics and kinetics of hydrogen absorption in the intermetallic compounds Zr(Cr1 − xVx)2

Perevesenzew, A; Lanzel, E.; Eder, O.J.; Tuscher, E.; Weinzierl, P.

doi:10.1016/0022-5088(88)90028-8

Cited by 18 publications

(3 citation statements)

References 15 publications

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“…The ZrCr 2 base alloy was chosen for: (a) its simple C14 crystal structure [24]; (b) its high hydrogen storage capacity [25][26][27]; (c) its large PCT hysteresis; and (d) the extensive studies on structural, thermodynamic, and electronic properties [28][29][30][31], and many studies on elemental substitution that have been performed (i.e. Ti [32,33], V [34][35][36][37][38][39], Mn [37,40], Fe [37,[40][41][42][43][44][45][46][47][48], Co [37,40,41,47,49], Ni [37,40,47,[50][51][52][53][54], Cu [37,40,55], Mo [37,38], Mo [38,56], Al [57], Si...…”

Section: Introductionmentioning

confidence: 99%

Pressure–composition–temperature hysteresis in C14 Laves phase alloys: Part 1. Simple ternary alloys

Young¹,

Ouchi²,

Fetcenko³

2009

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Pressure–composition–temperature hysteresis in C14 Laves phase alloys: Part 1. Simple ternary alloys

Young¹,

Ouchi²,

Fetcenko³

2009

Journal of Alloys and Compounds

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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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“…Effects of partial replacement of certain B-atoms by vanadium in AB2 Laves phase alloy were studied previously, elements being replaced include Ni [25][26][27][28][29], Cr [30][31][32][33][34][35], and Mn [32,[36][37][38][39][40][41][42][43]. Adding vanadium to alter the AB2 stoichiometry was also reported before [44,45].…”

Section: Introductionmentioning

confidence: 95%

Effect of vanadium substitution in C14 Laves phase alloys for NiMH battery application

Young¹,

Fetcenko²,

Li³

et al. 2009

Journal of Alloys and Compounds

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Vanadium, as the most important B-site modifier in (Zr,Ti)Ni 2 -based Laves phase alloy, was studied to optimize the performance of nickel metal hydride batteries. As the amount of V-substitution for Ni increases, the total hydrogen storage capacity increases, while the reversible hydrogen storage capacity decreases due to the formation of a stable hydride. Lattice constants increase with higher vanadium contents indicating the majority of vanadium atoms reside in the B-site. Broader X-ray diffraction peaks and higher pressure-concentration isotherm slope factors indicate a higher degree of disorder for alloys with a higher V-content. In the study of a series of alloys with various V, Ni, Ti, Zr contents (while maintaining a constant value of electronegativity), all alloys exhibit similar pressure-concentration isotherms and half-cell characteristics. The sealed NiMH battery performance indicates that in the pure C14 alloy family, low-vanadium alloys (12-13 at.%) are more favorable in regards to peak power stability, charge retention, and cycle life.

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Thermodynamics and kinetics of hydrogen absorption in the intermetallic compounds Zr(Cr1 − xVx)2

Cited by 18 publications

References 15 publications

Pressure–composition–temperature hysteresis in C14 Laves phase alloys: Part 1. Simple ternary alloys

Pressure–composition–temperature hysteresis in C14 Laves phase alloys: Part 1. Simple ternary alloys

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

Effect of vanadium substitution in C14 Laves phase alloys for NiMH battery application

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