Synthesis and hydriding/dehydriding properties of Mg2Ni–AB (AB = TiNi or TiFe) nanocomposites

Zlatanova, Zlatina; Spassov, Тony; Eggeler, G.; Spassova, M.

doi:10.1016/j.ijhydene.2011.03.092

Cited by 19 publications

(9 citation statements)

References 26 publications

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“…Magnesium nickel borides were detected after repeated hydriding of the alloy. This is not the case for the Mg 64 Ni 32 B 4 alloy, where we observe repetition of the enthalpy values measured during the first hydriding/dehydriding cycle, which is also valid for the pure Mg 2 Ni [25].…”

Section: Hydrogen Sorption Propertiessupporting

confidence: 49%

Influence of boron on the hydriding of nanocrystalline Mg2Ni

2013

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Section: Hydrogen Sorption Propertiessupporting

confidence: 49%

Influence of boron on the hydriding of nanocrystalline Mg2Ni

2013

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“…The M s decreases and then increases with the increase in the alloy number, which is the opposite trend to the data observed for I o . The increase in I o for Mg2 is not from the metallic nickel particles embedded in the surface oxide and may be due to the high content of TiNi phase, which was reported as a catalytic phase for electrochemical reaction [84,85]. The H 1/2 values listed in Table 6 indicate that the size of metallic nickel decreases and then increases as the alloy number increases.…”

Section: Magnetic Propertiesmentioning

confidence: 89%

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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“…Therefore, the development of composite MH alloys, which contain two or more hydrogen storage materials/intermetallic compounds/elements, can potentially combine the advantages of constituted alloys. Recent composite alloy studies include BCC related alloys modified by AB 2 (Section 2.6), AB 5 [227], LaNi 5 [213,214], ZrV 2 [220], A 2 B 7 -type [217], LaNi 3 [212], or other BCC [218], A 2 B 7 -type alloy modified by AB 5 [228], MgNi alloy modified by Ti(NiCo) [229], Mg 2 Ni alloys modified by TiNi, TiFe [230], (MgMn) 2 Ni [231], (MgAl) 2 Ni [232], Co, or Ti [233], and are summarized in Table 8.…”

Section: Hydrogen Storage Alloys For Nimh Battery Negative Electrodesmentioning

confidence: 99%

The Current Status of Hydrogen Storage Alloy Development for Electrochemical Applications

Kim¹,

Nei²

2013

Materials

173

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In this review article, the fundamentals of electrochemical reactions involving metal hydrides are explained, followed by a report of recent progress in hydrogen storage alloys for electrochemical applications. The status of various alloy systems, including AB5, AB2, A2B7-type, Ti-Ni-based, Mg-Ni-based, BCC, and Zr-Ni-based metal hydride alloys, for their most important electrochemical application, the nickel metal hydride battery, is summarized. Other electrochemical applications, such as Ni-hydrogen, fuel cell, Li-ion battery, air-metal hydride, and hybrid battery systems, also have been mentioned.

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Synthesis and hydriding/dehydriding properties of Mg2Ni–AB (AB = TiNi or TiFe) nanocomposites

Cited by 19 publications

References 26 publications

Influence of boron on the hydriding of nanocrystalline Mg2Ni

Influence of boron on the hydriding of nanocrystalline Mg2Ni

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

The Current Status of Hydrogen Storage Alloy Development for Electrochemical Applications

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