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A new material for hydrogen storage; ScAl0.8Mg0.2

In English

Författare

  • Martin Sahlberg
  • Premysl Beran
  • Thomas Kollin Nielsen
  • Yngve Cerenius
  • Krisztina Kadas
  • Marko P. J. Punkkinen
  • Levente Vitos
  • Olle Eriksson
  • Torben R. Jensen
  • Yvonne Andersson

Summary, in English

A novel aluminium rich alloy for hydrogen storage has been discovered, ScAl0.8Mg0.2, which has very promising properties regarding hydrogen storage capacity, kinetics and stability towards air oxidation in comparison to hydrogen absorption in state-of-the-art intermetallic compounds. The absorption of hydrogen was found to be very fast, even without adding any catalyst, and reversible. The discovered alloy crystallizes in a CsCl-type structure, but decomposes to ScH2 and Al(Mg) during hydrogen absorption. Detailed analysis of the hydrogen absorption in ScAl0.8Mg0.2 has been performed using in situ synchrotron radiation powder X-ray diffraction, neutron powder diffraction and quantum mechanical calculations. The results from theory and experiments are in good agreement with each other. (C) 2009 Elsevier Inc. All rights reserved.

Publiceringsår

2009

Språk

Engelska

Sidor

3113-3117

Publikation/Tidskrift/Serie

Journal of Solid State Chemistry

Volym

182

Issue

11

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Natural Sciences
  • Physical Sciences

Nyckelord

  • diffraction
  • X-ray
  • Hydrogen storage materials
  • Scandium intermetallics
  • Hydrides

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0022-4596