Hydrogen sorption properties of MgH2/NaBH4 composites

The hydrogen sorption properties of magnesium hydride–sodium borohydride composites prepared by means of high-energy ball milling under Ar atmosphere were investigated. Mutual influence of milling time and the content of NaBH4 were studied. Microstructural and morphological analyses were carried out...

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Bibliographic Details
Published in:International journal of hydrogen energy 2013-09, Vol.38 (27), p.12140-12145
Main Authors: Kurko, Sandra, Aurora, Annalisa, Gattia, Daniele Mirabile, Contini, Vittoria, Montone, Amelia, Rašković-Lovre, Željka, Novaković, Jasmina Grbović
Format: Article
Language:English
Subjects:
Alternative fuels. Production and utilization
Applied sciences
Ball milling
Diffraction
Energy
Exact sciences and technology
Fuels
Hydrogen
Hydrogen storage
Hydrogen-based energy
Kinetics
Lasers
Magnesium
MgH2/NaBH4 composites
Scanning electron microscopy
Sorption
Sorption cycling
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Summary:The hydrogen sorption properties of magnesium hydride–sodium borohydride composites prepared by means of high-energy ball milling under Ar atmosphere were investigated. Mutual influence of milling time and the content of NaBH4 were studied. Microstructural and morphological analyses were carried out using X-ray Diffraction (XRD), laser scattering measurements and Scanning Electron Microscopy (SEM), while kinetic analysis and cycling were performed in a Sievert's volumetric apparatus. It has been shown that low content of NaBH4 and short milling time are beneficial for hydrogen sorption kinetics. •Ball milling with NaBH4 significantly improves MgH2 hydrogen sorption kinetics.•Composite has very good hydrogen cycling properties.•Concentration of catalyst and milling time are important for kinetics improvement.
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2013.04.075