Sorption behavior of the MgH2-Mg2FeH6 hydride storage system synthesized by mechanical milling followed by sintering
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Sorption behavior of the MgH2-Mg2FeH6 hydride storage system synthesized by mechanical milling followed by sintering. / Puszkiel, Julian; Gennari, Fabiana; Larochette, Pierre Arneodo; Karimi, Fahim; Pistidda, Claudio; Gosalawit-Utke, Rapee; Jepsen, Julian; Jensen, Torben R.; Gundlach, Carsten; von Colbe, Jose Bellosta; Klassen, Thomas; Dornheim, Martin.
In: International Journal of Hydrogen Energy, Vol. 38, No. 34, 2013, p. 14618-14630.Research output: Contribution to journal › Article
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T1 - Sorption behavior of the MgH2-Mg2FeH6 hydride storage system synthesized by mechanical milling followed by sintering
AU - Puszkiel, Julian
AU - Gennari, Fabiana
AU - Larochette, Pierre Arneodo
AU - Karimi, Fahim
AU - Pistidda, Claudio
AU - Gosalawit-Utke, Rapee
AU - Jepsen, Julian
AU - Jensen, Torben R.
AU - Gundlach, Carsten
AU - von Colbe, Jose Bellosta
AU - Klassen, Thomas
AU - Dornheim, Martin
PY - 2013
Y1 - 2013
N2 - The hydrogen sorption behavior of the Mg2FeH6-MgH2 hydride system is investigated via in-situ synchrotron and laboratory powder X-ray diffraction (SR-PXD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), particle size distribution (PSD) and volumetric techniques. The Mg2FeH6-MgH2 hydride system is obtained by mechanical milling in argon atmosphere followed by sintering at high temperature and hydrogen pressure. In-situ SR-PXD results show that upon hydriding MgH2 is a precursor for Mg2FeH6 formation and remained as hydrided phase in the obtained material. Diffusion constraints preclude the further formation of Mg2FeH6. Upon dehydriding, our results suggest that MgH2 and Mg2FeH6 decompose independently in a narrow temperature range between 275 and 300 degrees C. Moreover, the decomposition behavior of both hydrides in the Mg2FeH6-MgH2 hydride mixture is influenced by each other via dual synergetic-destabilizing effects. The final hydriding/dehydriding products and therefore the kinetic behavior of the Mg2FeH6-MgH2 hydride system exhibits a strong dependence on the temperature and pressure conditions. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
AB - The hydrogen sorption behavior of the Mg2FeH6-MgH2 hydride system is investigated via in-situ synchrotron and laboratory powder X-ray diffraction (SR-PXD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), particle size distribution (PSD) and volumetric techniques. The Mg2FeH6-MgH2 hydride system is obtained by mechanical milling in argon atmosphere followed by sintering at high temperature and hydrogen pressure. In-situ SR-PXD results show that upon hydriding MgH2 is a precursor for Mg2FeH6 formation and remained as hydrided phase in the obtained material. Diffusion constraints preclude the further formation of Mg2FeH6. Upon dehydriding, our results suggest that MgH2 and Mg2FeH6 decompose independently in a narrow temperature range between 275 and 300 degrees C. Moreover, the decomposition behavior of both hydrides in the Mg2FeH6-MgH2 hydride mixture is influenced by each other via dual synergetic-destabilizing effects. The final hydriding/dehydriding products and therefore the kinetic behavior of the Mg2FeH6-MgH2 hydride system exhibits a strong dependence on the temperature and pressure conditions. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
KW - Hydride mixture
KW - Magnesium hydride
KW - Complex hydride
KW - Reaction path
KW - Desorption kinetics
U2 - 10.1016/j.ijhydene.2013.08.068
DO - 10.1016/j.ijhydene.2013.08.068
M3 - Article
VL - 38
SP - 14618
EP - 14630
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
SN - 1879-3487
IS - 34
ER -