Hydrogen sorption in the LiH–LiF–MgB₂ system
Publication date
2013-07-22
Document type
Forschungsartikel
Author
Saldan, Ivan
Schulze, Matthias
Pistidda, Claudio
Gosalawit-Utke, Rapee
Zavorotynska, Olena
Rude, Line H.
Skibsted, Jørgen
Haase, Dörthe
Cerenius, Yngve
Jensen, Torben Rene
Spoto, Giuseppe
Baricco, Marcello
Taube, Klaus
Dornheim, Martin
Organisational unit
Publisher
American Chemical Society (ACS)
Series or journal
The Journal of Physical Chemistry C
ISSN
Periodical volume
117
Periodical issue
33
First page
17360
Last page
17366
Part of the university bibliography
✅
Language
English
Abstract
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 H₂ and 390 °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 ¹⁹F 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.
Version
Published version
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