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Design and operation of an aluminium alloy tank using doped Na3AlH6 in kg scale for hydrogen storage

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

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

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Meggouh,  Mariem
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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Citation

Urbanczyk, R., Peinecke, K., Meggouh, M., Minne, P., Peil, S., Bathen, D., et al. (2016). Design and operation of an aluminium alloy tank using doped Na3AlH6 in kg scale for hydrogen storage. Journal of Power Sources, 324, 589-597. doi:10.1016/j.jpowsour.2016.05.102.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002A-E2B4-6
Abstract
In this publication the authors present an aluminium alloy tank for hydrogen storage using 1921 g of Na3AlH6 doped with 4 mol% of TiCl3 and 8 mol% of activated carbon. The tank and the heat exchangers are manufactured by extrusion moulding of Al-Mg-Si based alloys. EN AW 6082 T6 alloy is used for the tank and a specifically developed alloy with a composition similar to EN AW 6060 T6 is used for the heat exchangers. The three heat exchangers have a corrugated profile to enhance the surface area for heat transfer. The doped complex hydride Na3AlH6 is densified to a powder density of 0.62 g cm−3. The hydrogenation experiments are carried out at 2.5 MPa. During one of the dehydrogenation experiments approximately 38 g of hydrogen is released, accounting for gravimetric hydrogen density of 2.0 mass-%. With this tank 15 hydrogenation and 16 dehydrogenation tests are carried out.