The structural characterization and H2sorption properties of carbon-supported Mg1−xNixnanocrystallites

Bogerd, René; Adelhelm, Philipp; Meeldijk, Johannes H; Jong, Krijn P. de; Jongh, Petra E. de

doi:10.1088/0957-4484/20/20/204019

Cited by 59 publications

(51 citation statements)

References 26 publications

(33 reference statements)

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“…Intermetallic Mg 2 Ni and its hydride Mg 2 NiH 4 nanoparticles were prepared and stabilised into the mesopores of a template carbon [64,69]. One approach was to first deposit well-defined Ni nanoparticles inside the pores, followed by vapour-phase deposition of Mg and hydrogenation.…”

Section: Nanoconfinementmentioning

confidence: 99%

Review of magnesium hydride-based materials: development and optimisation

et al. 2016

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Magnesium hydride has been studied extensively for applications as a hydrogen storage material owing to the favourable cost and high gravimetric and volumetric hydrogen densities. However, its high enthalpy of decomposition necessitates high working temperatures for hydrogen desorption while the slow rates for some processes such as hydrogen diffusion through the bulk create challenges for large-scale implementation. The present paper reviews fundamentals of the Mg-H system and looks at the recent advances in the optimisation of magnesium hydride as a hydrogen storage material through the use of catalytic additives, incorporation of defects and an understanding of the rate-limiting processes during absorption and desorption.

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Section: Nanoconfinementmentioning

confidence: 99%

Review of magnesium hydride-based materials: development and optimisation

et al. 2016

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“…Recent developments are mostly related to further insight into the properties of Mg x Ni alloys by studying the hydrogenation properties of thin films [31,32] and nanoparticles, prepared either by supporting on a carbon scaffold [33] or by gas-phase techniques [22,23]. Using an in situ microscope during hydrogenation, it was possible to visualize the nucleation and growth of Mg 2 NiH 4 crystals with a lattice spacing of 0.22 nm in Mg-rich domains, followed by crystallization of MgH 2 , demonstrating how the presence of Mg 2 Ni facilitates the hydrogenation of Mg [32].…”

Section: Nickelmentioning

confidence: 99%

“…LaH 3 ? MgH 2 [33]. It is interesting that instead of immediate formation of MgH 2 , the magnesium metal was formed first, before interacting with hydrogen to yield a magnesium dihydride.…”

Section: 7mentioning

confidence: 99%

Mg-based compounds for hydrogen and energy storage

Crivello

Denys

Dornheim³

et al. 2016

Appl. Phys. A

155

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Magnesium-based alloys attract significant interest as cost-efficient hydrogen storage materials allowing the combination of high gravimetric storage capacity of hydrogen with fast rates of hydrogen uptake and release and pronounced destabilization of the metalhydrogen bonding in comparison with binary Mg-H systems. In this review, various groups of magnesium compounds are considered, including (1) RE-Mg-Ni hydrides (RE = La, Pr, Nd); (2) Mg alloys with p-elements (X = Si, Ge, Sn, and Al); and (3) magnesium alloys with d-elements (Ti, Fe, Co, Ni, Cu, Zn, Pd). The hydrogenation-disproportionation-desorption-recombination process in the Mg-based alloys (LaMg 12 , LaMg 11 Ni) and unusually high-pressure hydrides synthesized at pressures exceeding 100 MPa (MgNi 2 H 3 ) and stabilized by Ni-H bonding are also discussed. The paper reviews interrelations between the properties of the Mg-based hydrides and p-T conditions of the metal-hydrogen interactions, chemical composition of the initial alloys, their crystal structures, and microstructural state.

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“…Pore-confined reaction has recently been developed as an interesting alternative. One of the earliest reports is on Mg 2 NiH 4 , formed by the deposition of Mg into the pores of a carbon scaffold that already contained Ni nanoparticles [135]. The resulting *4 nm Mg 2 Ni and Mg 2 NiH 4 nanoparticles were very stable upon cycling, with sorption being achieved within 5 min at 210°C [136].…”

Section: Strategies To Prepare Nanoconfined Materialsmentioning

confidence: 99%

Complex and liquid hydrides for energy storage

et al. 2016

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The research on complex hydrides for hydrogen storage was initiated by the discovery of Ti as a hydrogen sorption catalyst in NaAlH 4 by Boris Bogdanovic in 1996. A large number of new complex hydride materials in various forms and combinations have been synthesized and characterized, and the knowledge regarding the properties of complex hydrides and the synthesis methods has grown enormously since then. A significant portion of the research groups active in the field of complex hydrides is collaborators in the International Energy Agreement Task 32. This paper reports about the important issues in the field of complex hydride research, i.e. the synthesis of borohydrides, the thermodynamics of complex hydrides, the effects of size and confinement, the hydrogen sorption mechanism and the complex hydride composites as well as the properties of liquid complex hydrides. This paper is the result of the collaboration of several groups and is an excellent summary of the recent achievements.

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The structural characterization and H₂sorption properties of carbon-supported Mg_1−xNi_xnanocrystallites

Cited by 59 publications

References 26 publications

Review of magnesium hydride-based materials: development and optimisation

Review of magnesium hydride-based materials: development and optimisation

Mg-based compounds for hydrogen and energy storage

Complex and liquid hydrides for energy storage

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