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Crystals 2018, 8(2), 90; https://doi.org/10.3390/cryst8020090

Reactive Hydride Composite of Mg2NiH4 with Borohydrides Eutectic Mixtures

1
Department of Chemistry and Inter-Departmental Center Nanostructured Interfaces and Surfaces (NIS), University of Turin, Via Pietro Giuria 7, 10125 Torino, Italy
2
Nanotechnology Department, Helmholtz-Zentrum Geesthacht Max-Planck Straße 1, 21502 Geesthacht, Germany
3
Laboratoire de Cristallographie et Sciences des Matériaux (CRISMAT), UMR 6508, Normandie University, ENSICAEN, UNICAEN, CNRS, 14000 Caen, France
*
Author to whom correspondence should be addressed.
Received: 20 January 2018 / Revised: 6 February 2018 / Accepted: 7 February 2018 / Published: 10 February 2018
(This article belongs to the Special Issue Properties and Applications of Novel Light Metal Hydrides)
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Abstract

The development of materials showing hydrogen sorption reactions close to room temperature and ambient pressure will promote the use of hydrogen as energy carrier for mobile and stationary large-scale applications. In the present study, in order to reduce the thermodynamic stability of MgH2, Ni has been added to form Mg2NiH4, which has been mixed with various borohydrides to further tune hydrogen release reactions. De-hydrogenation/re-hydrogenation properties of Mg2NiH4-LiBH4-M(BH4)x (M = Na, K, Mg, Ca) systems have been investigated. Mixtures of borohydrides have been selected to form eutectics, which provide a liquid phase at low temperatures, from 110 °C up to 216 °C. The presence of a liquid borohydride phase decreases the temperature of hydrogen release of Mg2NiH4 but only slight differences have been detected by changing the borohydrides in the eutectic mixture. View Full-Text
Keywords: eutectic; borohydride; reactive hydride composite; hydrogen storage eutectic; borohydride; reactive hydride composite; hydrogen storage
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Dematteis, E.M.; Vaunois, S.; Pistidda, C.; Dornheim, M.; Baricco, M. Reactive Hydride Composite of Mg2NiH4 with Borohydrides Eutectic Mixtures. Crystals 2018, 8, 90.

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