Formation region and hydrogen storage abilities of perovskite-type hydrides

Ikeda, Kazutaka; Kogure, Yumi; Nakamori, Yoshiteru; Orimo, Shin Ichi

doi:10.1016/j.progsolidstchem.2007.01.005

Cited by 38 publications

(16 citation statements)

References 19 publications

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“…Ikeda et.al. reported that perovskite-type hydrides with stable structure are suggested to be within the range of tolerance factor (0.77 to 1.00) 8 . Therefore, in this investigation, Li x Na 1-x MgH 3 substituted samples with nominal composition x = 0, 0.2 and 0.5 lay within this range showing a unit cell decrease tendency (Fig.…”

Section: Methodsmentioning

confidence: 99%

Hydrogen sorption properties of Li x Na 1−x MgH 3 (x = 0, 0.2, 0.5 & 0.8)

Vasquez

Liu

Paterakis

et al. 2017

International Journal of Hydrogen Energy

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The synthesis, thermodynamic destabilisation and hydrogen absorption/desorption characteristics of the Li x Na 1-x MgH 3 system with (x=0, 0.2, 0.5 and 0.8 molar ratios) have been investigated. Samples were mechanically milled under argon for 5 hours; then characterised by X-ray diffraction (XRD), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA). Diffraction peaks of NaMgH 3 phase shifted to higher angles and lattice parameters decreased due to the Li addition into the system. 2 and 3 endothermic reactions were observed for the Li x substituted samples (x=0, 0.2, 0.5, 0.8). Li 0.8 Na 0.2 MgH 3 hydride showed the best performance among the other quaternary hydrides (synthesised in this work) releasing 5.2 wt.% of H 2 at 314 °C. Rehydrogenation of the decomposed Li x Na 1-x MgH 3 (x=0, 0.2, 0.5 & 0.8) samples was experimentally confirmed under 10 bar H 2 at ~250 °C.

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Section: Methodsmentioning

confidence: 99%

Hydrogen sorption properties of Li x Na 1−x MgH 3 (x = 0, 0.2, 0.5 & 0.8)

Vasquez

Liu

Paterakis

et al. 2017

International Journal of Hydrogen Energy

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show abstract

“…However, this phase is unstable at the temperatures needed to release hydrogen, i.e. temperatures higher than 200 C. 61 Metastable phases of magnesium binary and ternary hydrides are under current investigation, [100][101][102] but to date, most of these hydrides exhibit kinetic problems and a significant reduction of hydrogen capacity.…”

Section: The Properties Of the Magnesium-hydrogen Systemmentioning

confidence: 99%

Hydrogen in magnesium: new perspectives toward functional stores

Aguey‐Zinsou

Ares-Fernández

2010

Energy Environ. Sci.

372

209

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“…The aim of the present study was to investigate the formation of NaMgH 3 under hydrostatic pressure conditions at moderate temperatures, as well as the formation of new Li-substituted derivatives with nominal composition Na 1−x Li x MgH 3 (x = 0, 0.25 and 0.5). The replacement of Na by Li would be advantageous for the hydrogen storage ability of the parent material [17,18] since (i) Li is lighter than Na, so the amount of hydrogen per hydride mass should be improved and (ii) the stability of the Li perovskite is found to be lower, therefore the hydrogen desorption proceeds at lower temperatures. In this work we describe a comprehensive study of the crystal structure and thermal analysis of the Na 1−x Li x MgH 3 series, prepared by the mentioned high-pressure method.…”

Section: Introductionmentioning

confidence: 99%