Reactive Hydride Composite of Mg2NiH4 with Borohydrides Eutectic Mixtures
Source abstract
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.
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Research context
OpenAlex topics: Hydrogen Storage and Materials · Superconductivity in MgB2 and Alloys · Ammonia Synthesis and Nitrogen Reduction
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Chemistry and Inter-Departmental Center Nanostructured Interfaces and Surfaces (NIS), University of Turin, Via Pietro Giuria 7, 10125 Torino, Italy
Nanotechnology Department, Helmholtz-Zentrum Geesthacht Max-Planck Straße 1, 21502 Geesthacht, Germany
Laboratoire de Cristallographie et Sciences des Matériaux (CRISMAT), UMR 6508, Normandie University, ENSICAEN, UNICAEN, CNRS, 14000 Caen, France
Funding
EU ITN
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