Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 40, Issue 20, Pages 6600-6605Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2015.03.130
Keywords
Hydrogen storage material; Lithium borohydride; Reactive hydride system; Hydrogen storage property
Categories
Funding
- National Natural Science Foundation of China [51371008, 51101037]
- Pearl River Science and Technology Scholar Project of Guangzhou [2014J2200094]
- Guangdong Scientific Project [2013B010403018]
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The hydrogenated Mg11CeNi alloy was utilized as a destabilizer to combine with LiBH4 in this paper. It was found that thermal dehydrogenation of the LiBH4/Mg11CeNi hydride system with a molar ratio of 17:2.5 proceeds in two-step reactions: one initiates at around 280 degrees C with about 4.0 wt.% of hydrogen released from MgH2 and Mg2NiH4, and the other occurs in the temperature range 350-425 degrees C that can be assigned to the decomposition of LiBH4 co-destabilized by Mg2Ni, CeH2 and Mg. These two-step dehydrogenation reactions for the LiBH4/Mg11CeNi hydride system are partially reversible, and about 4.9 wt.% of hydrogen can be reloaded at 400 degrees C under an initial hydrogen pressure of 9 MPa. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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