Issue 18, 2009
From the journal:

Journal of Materials Chemistry

The identification of a hitherto unknown intermediate phase CaB2Hx from decomposition of Ca(BH4)2

M. D. Riktor,*a   M. H. Sørby,a   K. Chłopek,b   M. Fichtnerb  and  B. C. Haubacka  

* Corresponding authors

a Physics Department, Institute for Energy Technology, P. O. Box 40, Kjeller, Norway
E-mail: maritdr@ife.no
Fax: +47 63 81 09 20
Tel: +47 63 80 63 88

b Institute for Nanotechnology, Forschungszentrum Karlsruhe, P. O. Box 3640, Karlsruhe, Germany

Abstract

Ca(BH4)2 is a promising material for hydrogen storage due to its high gravimetric capacity and expected suitable thermodynamic properties. Experimental reports indicate a more complex reaction pathway than the previously proposed route, including formation of unknown intermediate phases. In this work, the reaction scheme of a mixture of γ- and β-Ca(BH4)2 was investigated using temperature programmed desorption and high-resolution synchrotron radiation powder X-ray diffraction. An unknown intermediate Ca–B–H-containing phase has been identified as a CaB2Hx compound where x most probably equals 2. A structure model is proposed.

Graphical abstract: The identification of a hitherto unknown intermediate phase CaB2Hx from decomposition of Ca(BH4)2

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Article information

DOI
https://doi.org/10.1039/B818127F
Article type
Paper
Submitted
05 Nov 2008
Accepted
03 Feb 2009
First published
05 Mar 2009

J. Mater. Chem., 2009,19, 2754-2759

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The identification of a hitherto unknown intermediate phase CaB2Hx from decomposition of Ca(BH4)2

M. D. Riktor, M. H. Sørby, K. Chłopek, M. Fichtner and B. C. Hauback, J. Mater. Chem., 2009, 19, 2754 DOI: 10.1039/B818127F

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