The discovery of the reversible hydrogenation reaction of MgH2-borohydride based Reactive Hydride Composites (RHCs) in 2004 gave new impetus to the entire hydrogen storage research. RHCs combine high hydrogen storage capacities with relatively fast sorption rates at more moderate temperature and pressure conditions than in the case of the respective single borohydrides. In particular, for the promising combination of LiBH4 and MgH2, many investigations were carried out to gain a deeper understanding of the reaction pathways and optimize kinetic and cycling properties. However, a scaled up tank system containing the Li-based RHC has not been investigated until now. In this work we present the potentials and challenges of this system based on small scale investigations and compare these results with first experiences with two different tank systems, each of them filled with 250 g of LiH / MgB2 and TiCl3 as additive material. Compaction of the material plays a key role for technical application of RHCs regarding storage mass and volume as well as for heat transfer. The high potential of this system to meet DoE system targets will be discussed and possible solutions for the remaining challenges will be presented.

Design and evaluation of a LiBH4 ‐ MgH2 storage system

MILANESE, CHIARA;
2013-01-01

Abstract

The discovery of the reversible hydrogenation reaction of MgH2-borohydride based Reactive Hydride Composites (RHCs) in 2004 gave new impetus to the entire hydrogen storage research. RHCs combine high hydrogen storage capacities with relatively fast sorption rates at more moderate temperature and pressure conditions than in the case of the respective single borohydrides. In particular, for the promising combination of LiBH4 and MgH2, many investigations were carried out to gain a deeper understanding of the reaction pathways and optimize kinetic and cycling properties. However, a scaled up tank system containing the Li-based RHC has not been investigated until now. In this work we present the potentials and challenges of this system based on small scale investigations and compare these results with first experiences with two different tank systems, each of them filled with 250 g of LiH / MgB2 and TiCl3 as additive material. Compaction of the material plays a key role for technical application of RHCs regarding storage mass and volume as well as for heat transfer. The high potential of this system to meet DoE system targets will be discussed and possible solutions for the remaining challenges will be presented.
2013
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11571/715419
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