Designing an AB2-Type Alloy (TiZr-CrMnMo) for the Hybrid Hydrogen Storage Concept

The hybrid hydrogen storage method consists of the combination of both solid-state metal hydrides and gas hydrogen storage. This method is regarded as a promising trade-off solution between the already developed high-pressure storage reservoir, utilized in the automobile industry, and solid-state st...

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Published inEnergies (Basel) Vol. 13; no. 11; p. 2751
Main Authors Puszkiel, Julián, Bellosta von Colbe, José M., Jepsen, Julian, Mitrokhin, Sergey V., Movlaev, Elshad, Verbetsky, Victor, Klassen, Thomas
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.06.2020
Subjects
AB2 alloy
Advantages
Alloys
Automobile industry
compressed hydrogen
Dehydrogenation
Design parameters
Electric arc melting
Energy
Fuel cells
Graphite
Heat transfer
hybrid
Hydrogen
Hydrogen storage
metal hydride
Metal hydrides
Metals
Oxidation
Particle size
Pressure
Reservoir storage
Solid state
Storage reservoirs
thermodynamics
United States > US
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Summary:The hybrid hydrogen storage method consists of the combination of both solid-state metal hydrides and gas hydrogen storage. This method is regarded as a promising trade-off solution between the already developed high-pressure storage reservoir, utilized in the automobile industry, and solid-state storage through the formation of metal hydrides. Therefore, it is possible to lower the hydrogen pressure and to increase the hydrogen volumetric density. In this work, we design a non-stoichiometric AB2 C14-Laves alloy composed of (Ti0.9Zr0.1)1.25Cr0.85Mn1.1Mo0.05. This alloy is synthesized by arc-melting, and the thermodynamic and kinetic behaviors are evaluated in a high-pressure Sieverts apparatus. Proper thermodynamic parameters are obtained in the range of temperature and pressure from 3 to 85 °C and from 15 to 500 bar: ΔHabs. = 22 ± 1 kJ/mol H2, ΔSabs. = 107 ± 2 J/K mol H2, and ΔHdes. = 24 ± 1 kJ/mol H2, ΔSdes. = 110 ± 3 J/K mol H2. The addition of 10 wt.% of expanded natural graphite (ENG) allows the improvement of the heat transfer properties, showing a reversible capacity of about 1.5 wt.%, cycling stability and hydrogenation/dehydrogenation times between 25 to 70 s. The feasibility for the utilization of the designed material in a high-pressure tank is also evaluated, considering practical design parameters.
ISSN:1996-1073
1996-1073
DOI:10.3390/en13112751