Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 464, Issue 1-2, Pages 374-376Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2007.09.129
Keywords
metal hydrides; cyclic stability; kinetics; nanostructured materials; ball milling
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Funding
- Commission of the European Communities (CEC) [ENK6-CT-2002-00653]
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Two nanostructured Mg-based composites MgH2-5 wt.% LaNi5-5 wt.% Ti and MgH2-5 wt.% TiFeMn-5 wt.% V have been synthesised by ball milling with a milling time of 40h. The influence of prolonged cycling on the hydriding/dehydriding properties has been investigated by more than 500 absorption-desorption cycles using the isobaric method. Upon cycling, MgH2-5 wt.% LaNi5-5 wt.% Ti showed very good stability both in kinetics and in storage capacity. For the material MgH2-5 wt.% TiFeMn-5 wt.% V, the absorption kinetics slowed down continuously during cycling, whereas the desorption kinetics hardly changed. (C) 2007 Elsevier B.V. All rights reserved.
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