Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 690, Issue -, Pages 519-522Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.08.159
Keywords
Energy storage and conversion; Magnesium hydrogen storage alloys; Metals and alloys; Phase transformation
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Funding
- National Natural Science Foundation of China [51431001, 51271078, U120124]
- International Science & Technology Cooperation Program of China [2015DFA51750]
- Guangdong Natural Science Foundation [2014A030311004, 2014GKXM011]
- Guangdong Province Universities and Colleges Pearl River Scholar
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Mg17Ba2 hydrogen storage alloy was obtained by induction melting, and its hydrogen storage properties and phase transitions have been investigated. The reversible hydrogen capacity of Mg17Ba2 compound was 4.0 wt% H-2. A three-step dehydrogenation mechanism was revealed for the first time, and a new hydride (Ba2Mg7H18) was discovered during the dehydrogenation process. Enthalpy and entropy changes for the dehydrogenation of Mg17Ba2 were also calculated. (C) 2016 Elsevier B.V. All rights reserved.
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