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Hydrogen Sorption in the LiH-LiF-MgB2 System

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Author

  • Ivan Saldan
  • Matthias Schulze
  • Claudio Pistidda
  • Rapee Gosalawit-Utke
  • Olena Zavorotynska
  • Line H. Rude
  • Jorgen Skibsted
  • Dörthe Haase
  • Yngve Cerenius
  • Torben R. Jensen
  • Giuseppe Spoto
  • Marcello Baricco
  • Klaus Taube
  • Martin Dornheim
Show all

Summary, in English

A composite material in the LiH-LiF-MgB2 system has been synthesized by high-energy ball milling. Some peaks in addition to that of the binary 2LiH-MgB2 and 2LiF-MgB2 systems are observed for the composite material by high-pressure differential scanning calorimetry (HP-DSC), indicating the formation of intermediate phases. In situ synchrotron radiation powder X-ray diffraction (SR-PXD) performed at 60 bar of H-2 and 390 degrees C shows a superposition of both reaction pathways that are typical for 2LiH-MgB2 and 2LiF-MgB2. After hydrogen absorption of the LiH-LiF-MgB2 composite the vibrational modes of LiBH4 were observed by attenuated total reflection infrared (ATR-IR) spectroscopy. The F-19 MAS NMR spectrum of the LiF-LiBH4 sample after heat treatment in hydrogen is strongly dominated by the centerband and spinning sidebands from LiF; in addition, a low-intensity resonance, very similar to that of [BF4](-) ion, is identified.

Department/s

Publishing year

2013

Language

English

Pages

17360-17366

Publication/Series

Journal of Physical Chemistry C

Volume

117

Issue

33

Document type

Journal article

Publisher

The American Chemical Society (ACS)

Topic

  • Physical Sciences
  • Natural Sciences

Status

Published

ISBN/ISSN/Other

  • ISSN: 1932-7447