Javascript verkar inte påslaget? - Vissa delar av Lunds universitets webbplats fungerar inte optimalt utan javascript, kontrollera din webbläsares inställningar.
Du är här

Intermediate phases observed during decomposition of LiBH4

  • Lene Mosegaard
  • Bitten Møller
  • Jens-Erik Jørgensen
  • Ulrike Bösenberg
  • Martin Dornheim
  • Jonathan C Hanson
  • Yngve Cerenius
  • Gavin Walker
  • Hans Jørgen Jakobsen
  • Flemming Besenbacher
  • Torben R Jensen
Publiceringsår: 2007
Språk: Engelska
Sidor: 301-305
Publikation/Tidskrift/Serie: Journal of Alloys and Compounds
Volym: 446-447
Dokumenttyp: Konferensbidrag
Förlag: Elsevier Science


Lithium tetrahydridoboranate is among the materials with the highest hydrogen content and has great potential as a possible H-2-storage material, although, the release and uptake of H-2 is not fully understood. In this work, LiBH4 was studied by in situ synchrotron radiation powder X-ray diffraction (PXD) and solid state CP/MAS NNIR both at variable temperatures. This study revealed two new phases observed during dehydrogenation of LiBH4. Phase I is hexagonal, a = 4.93(2) and c = 13.47(3) angstrom and is observed in the temperature range -200-300 degrees C, and phase II is orthorhombic, a = 8.70(1), b = 5.44(1) and c = 4.44](8) angstrom and is observed in the temperature range similar to 300-400 degrees C applying a constant heating rate of 5 degrees C/min. Apparently, I transforms into II, e.g. at a constant temperature of T= 265 degrees C after 5 h. Furthermore, a third phase, III, is observed in the temperature range RT to 70 degrees C, and is caused by a reaction between LiBH4 and water vapor from the atmosphere. Hydrogen release is associated with the decomposition of III at ca. 65 degrees C. (C) 2007 Elsevier B.V. All rights reserved.



  • Physical Sciences
  • Natural Sciences


10th International Symposium on Metal-Hydrogen Systems, Fundamentals and Applications
Lahaina, HI, United States
  • ISSN: 0925-8388

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen