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Aluminium alloy based hydrogen storage tank operated with sodium aluminium hexahydride Na3AlH6

MPG-Autoren
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Urbanczyk,  Robert
Institut für Energie- und Umwelttechnik e.V., Bliersheimerstr. 58-60, 47229 Duisburg, Germany;
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Peinecke,  Kateryna
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Felderhoff,  Michael
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Hauschild,  Klaus
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Kersten,  Wolfgang
Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Zitation

Urbanczyk, R., Peinecke, K., Felderhoff, M., Hauschild, K., Kersten, W., Peil, S., et al. (2014). Aluminium alloy based hydrogen storage tank operated with sodium aluminium hexahydride Na3AlH6. International Journal of Hydrogen Energy, 39(30), 17118-17128. doi:10.1016/j.ijhydene.2014.08.101.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0024-443E-E
Zusammenfassung
Here we present the development of an aluminium alloy based hydrogen storage tank, charged with Ti-doped sodium aluminium hexahydride Na3AlH6. This hydride has a theoretical hydrogen storage capacity of 3 mass-% and can be operated at lower pressure compared to sodium alanate NaAlH4. The tank was made of aluminium alloy EN AW 6082 T6. The heat transfer was realised through an oil flow in a bayonet heat exchanger, manufactured by extrusion moulding from aluminium alloy EN AW 6060 T6. Na3AlH6 is prepared from 4 mol-% TiCl3 doped sodium aluminium tetrahydride NaAlH4 by addition of two moles of sodium hydride NaH in ball milling process. The hydrogen storage tank was filled with 213 g of doped Na3AlH6 in dehydrogenated state. Maximum of 3.6 g (1.7 mass-% of the hydride mass) of hydrogen was released from the hydride at approximately 450 K and the same hydrogen mass was consumed at 2.5 MPa hydrogenation pressure. 45 cycle tests (rehydrogenation and dehydrogenation) were carried out without any failure of the tank or its components. Operation of the tank under real conditions indicated the possibility for applications with stationary HT-PEM fuel cell systems.