Effect of the temperature and of the catalyst on the hollow particle formation in the Mg composites

Amelia Montone, Annalisa Aurora, Daniele Mirabile Gattia

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Abstract

The high H2storage capacity, the reversibility and the low cost make magnesium hydride a promising material for hydrogen storage at the solid state. The stability of these materials under H2cycling has been tested in this paper. Moreover, the morphological modifications of MgH2particles during hydrogen cycling have been studied. In particular, it is discussed how experimental parameters such as the temperature and the nature of the catalyst could affect the morphological changes occurring after cycling for MgH2powder ball milled with Fe or Nb2O5. The cycled sample, presents the formation of hollow particles constituted by MgO shell and the absence of the catalyst in most of the particles has been observed. Ball milled MgH2with and without catalyst has been prepared and different thermal treatments have been performed in a Sievert's type apparatus. Scanning electron microscope has been used for the observation of the powders. © 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights.
Original languageEnglish
Pages (from-to)12146 - 12151
Number of pages6
JournalInternational Journal of Hydrogen Energy
Volume38
Issue number27
DOIs
Publication statusPublished - 10 Sep 2013
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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