In situ X-ray Raman spectroscopy of LiBH4
Files
Publication date
2012
Authors
Miedema, Piter S.
Ngene, Peter
van der Eerden, A.M.J.
Weng, Tsu-Chien
Nordlund, Dennis
Sokaras, Dimosthenis
Alonso-Mori, Roberto
Juhin, Amelie
de Jongh, P.E.
de Groot, F.M.F.
Editors
Advisors
Supervisors
Document Type
Article
Metadata
Show full item recordCollections
License
Abstract
X-Ray Raman Spectroscopy (XRS) is used to study the electronic properties of bulk lithium borohydride (LiBH4) and LiBH4 in porous carbon nano-composites (LiBH4/C) during dehydrogenation. The lithium (Li), boron (B) and carbon (C) K-edges are studied and compared with calculations of the starting material and intermediate compounds. Comparison of the B and C K-edge XRS spectra of the as-prepared samples with rehydrogenated samples shows that the B and C electronic structure is largely regained after rehydrogenation. Both Li and C K-edge spectra show that during dehydrogenation, part of the Li intercalates into the porous carbon. This study shows that XRS in combination with calculations is a promising tool to study the electronic properties of nano-crystalline light-weight materials for energy storage.
Keywords
K-EDGE XANES, ABSORPTION SPECTROSCOPY, HYDROGEN, SCATTERING, DECOMPOSITION, MICROSCOPY, DEPENDENCE, SPECTRA, XAS, Taverne
Citation
Miedema, P S, Ngene, P, van der Eerden, A M J, Weng, T-C, Nordlund, D, Sokaras, D, Alonso-Mori, R, Juhin, A, de Jongh, P E & de Groot, F M F 2012, 'In situ X-ray Raman spectroscopy of LiBH4', Physical Chemistry Chemical Physics, vol. 14, no. 16, pp. 5581-5587. https://doi.org/10.1039/c2cp24025d