Studies of off-stoichiometric AB2 metal hydride alloy: Part 1. Structural characteristics

Young, K.; Ouchi, T.; Yang, Jianghuai; Fetcenko, M.A.

doi:10.1016/j.ijhydene.2011.05.057

Cited by 30 publications

(23 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This observation is consistent with that from the AB 5 alloy series. Similar influences of stoichiometry on various properties of other two series of AB2 alloys predominated by C15 and C14/C15 phases were also reported previously (Young, et al 2011b(Young, et al & 2011c (Fig. 1).…”

Section: Influences On Electrochemical Propertiessupporting

confidence: 89%

Stoichiometry in Inter-Metallic Compounds for Hydrogen Storage Applications

Young¹

2012

Stoichiometry and Materials Science - When Numbers Matter

View full text Add to dashboard Cite

Section: Influences On Electrochemical Propertiessupporting

confidence: 89%

Stoichiometry in Inter-Metallic Compounds for Hydrogen Storage Applications

Young¹

2012

Stoichiometry and Materials Science - When Numbers Matter

View full text Add to dashboard Cite

“…The reason that more hypo-stoichiometric IMCs tend to form as the radii ratio increases is that a relatively small B-atom more rapidly forms a double B in A-site (dumbbell model [254]) and further increases the B/A ratio. The characteristics of a few off-stoichiometric C14 MH alloys were previously compared [45,255,256] and important results are summarized in the next three sections. Table 9.…”

Section: Stoichiometrymentioning

confidence: 99%

“…The stoichiometric C14 MH alloys with a B/A ratio close to 2.0 have the highest electrochemical capacity and surface exchange current, and the smallest PCT hysteresis (least pulverization) [256] and is the most studied alloy stoichiometry in the field of battery applications.…”

Section: Stoichiometric Alloymentioning

confidence: 99%

C14 Laves Phase Metal Hydride Alloys for Ni/MH Batteries Applications

2017

View full text Add to dashboard Cite

C14 Laves phase alloys play a significant role in improving the performance of nickel/metal hydride batteries, which currently dominate the 1.2 V consumer-type rechargeable battery market and those for hybrid electric vehicles. In the current study, the properties of C14 Laves phase based metal hydride alloys are reviewed in relation to their electrochemical applications. Various preparation methods and failure mechanisms of the C14 Laves phase based metal hydride alloys, and the influence of all elements on the electrochemical performance, are discussed. The contributions of some commonly used constituting elements are compared to performance requirements. The importance of stoichiometry and its impact on electrochemical properties is also included. At the end, a discussion section addresses historical hurdles, previous trials, and future directions for implementing C14 Laves phase based metal hydride alloys in commercial nickel/metal hydride batteries.

show abstract

“…XRD analysis is an important tool to study the multi-phase nature of the Laves phase MH alloys [55][56][57][58]. The XRD patterns for alloys Mg0-Mg5 are shown in Figure 1.…”

Section: X-ray Diffractometer Analysismentioning

confidence: 99%

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

Chang

Kim

Ouchi³

et al. 2016

Batteries

View full text Add to dashboard Cite

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.

show abstract

Studies of off-stoichiometric AB2 metal hydride alloy: Part 1. Structural characteristics

Cited by 30 publications

References 45 publications

Stoichiometry in Inter-Metallic Compounds for Hydrogen Storage Applications

Stoichiometry in Inter-Metallic Compounds for Hydrogen Storage Applications

C14 Laves Phase Metal Hydride Alloys for Ni/MH Batteries Applications

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

Contact Info

Product

Resources

About