Preparation and hydrogen storage properties of nanostructured Mg–Ni BCC alloys

Shao, Huaiyu; Asano, Keisuke; Enoki, Hirotoshi; Akiba, Etsuo

doi:10.1016/j.jallcom.2008.11.004

Cited by 72 publications

(34 citation statements)

References 25 publications

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“…Many factors such as a chemical composition [2][3][4] , addition of catalytic species [5][6][7][8][9][10] , processing technologies 5,[11][12][13][14] and microstructural parameters, particularly grain size 6,[15][16][17] , have an effect on the hydrogen storage capacity, kinetics and/or thermodynamics of Mg-based intermetallic compounds. Conventional crystalline alloys often suffer from relatively slow hydrogen sorption kinetics even at high temperatures, while nanocrystalline and amorphous materials exhibit much faster kinetics at lower temperatures, as their large number of interfaces, defects and grain boundaries, provide easy pathways for hydrogen diffusion [18][19][20][21] . Their wider use is however limited by the poor reversibility at ambient temperature and pressure.…”

Section: Introductionmentioning

confidence: 99%

New FCC Mg–Zr and Mg–Zr–ti deuterides obtained by reactive milling

Guzik¹,

Deledda²,

Sørby³

et al. 2015

Journal of Solid State Chemistry

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Section: Introductionmentioning

confidence: 99%

New FCC Mg–Zr and Mg–Zr–ti deuterides obtained by reactive milling

Guzik¹,

Deledda²,

Sørby³

et al. 2015

Journal of Solid State Chemistry

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“…In particular, Akiba's group has made an extensive study of the synthesis of Mg-Ti [48,49], Mg-Co [50][51][52] and Mg-Ni [53,54] BCC alloys by means of ball milling. In this review we will limit our discussion to the Mg-Ti system.…”

Section: Mg-based Bccmentioning

confidence: 99%

Nanocrystalline Metal Hydrides Obtained by Severe Plastic Deformations

Huot

2012

Metals

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It has recently been shown that Severe Plastic Deformation (SPD) techniques could be used to obtain nanostructured metal hydrides with enhanced hydrogen sorption properties. In this paper we review the different SPD techniques used on metal hydrides and present some specific cases of the effect of cold rolling on the hydrogen storage properties and crystal structure of various types of metal hydrides such as magnesium-based alloys and body centered cubic (BCC) alloys. Results show that generally cold rolling is as effective as ball milling to enhance hydrogen sorption kinetics. However, for some alloys such as TiV 0.9 Mn 1.1 alloy ball milling and cold rolling have detrimental effect on hydrogen capacity. The exact mechanism responsible for the change in hydrogenation properties may not be the same for ball milling and cold rolling. Nevertheless, particle size reduction and texture seems to play a leading role in the hydrogen sorption enhancement of cold rolled metal hydrides.

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“…Liu substituted Ni with other elements in the process of preparing the glassing Mg 50 Ni 50 alloy by mean of mechanical alloy method, and thought that the ball-milled Mg 50 Ni 45 M 5 (M= Mn, Cu and Fe) alloy exhibited optimum electrochemical discharge capacity and cycle stability [4]. Shao et al fabricated a series of milling Mg-Ni system alloy and investigated the effect of microstructure on hydrogen storage properties, and concluded that the Mg 50 Ni 50 with BBC nanostructure showed more opportune absorpting/desorpting and kinetics performance, and the adding transition metal and its compound also improved the hydrogen storage properties [5]. Feng et al mechanically milled the Mg -Ni alloy with CoB for 15 h to display excellent electrochemical and kinetic characterization [6].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Electrochemical Hydrogen Storage Properties of Ball-milled mgxni100-x+5wt %tif3 (x=50, 60, 70) Composite

Hu¹,

Deng²,

Ma³

et al. 2016

Proceedings of the 3rd International Conference on Material Engineering and Application (ICMEA 2016)

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Abstract. The nanocrystalline and amorphous Mg x Ni 100-x +5wt.%TiF 3 (x=50, 60, 70) hydrogen storage alloys were synthesized by mechanical ball milling method. Microstructure and electrochemical performances of ball-milled alloys were characterized by X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), electrochemical discharge capacity and cycling stability. The results show that the ball-milled hydrogen storage alloys hold a multiphase structure consisted of two main phases Mg 2 Ni and Ni as well as a small amount of third phase MgNi 2 and TiNi. The ball milling Mg 50 Ni 50 +5wt.%TiF 3 composite possesses optimal electrochemical discharge capacity, which is relevant to amorphous/nanocrystalline structure and hydride Mg 2 NiH 4 phase after absorbing hydrogen. X-ray diffraction analysis indicates that ball-milled Mg 50 Ni 50 +5wt.%TiF 3 composite exhibits the best electrochemical discharge properties.

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Preparation and hydrogen storage properties of nanostructured Mg–Ni BCC alloys

Cited by 72 publications

References 25 publications

New FCC Mg–Zr and Mg–Zr–ti deuterides obtained by reactive milling

New FCC Mg–Zr and Mg–Zr–ti deuterides obtained by reactive milling

Nanocrystalline Metal Hydrides Obtained by Severe Plastic Deformations

Microstructure and Electrochemical Hydrogen Storage Properties of Ball-milled mgxni100-x+5wt %tif3 (x=50, 60, 70) Composite

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