%0 journal article
%@ 0022-4596
%A Suarez Alcantara, K., Boesenberg, U., Zavorotynska, O., Bellosta von Colbe, J., Taube, K., Baricco, M., Klassen, T., Dornheim, M.

%D 2011
%J Journal of Solid State Chemistry
%N 11
%P 3104-3109 
%R doi:10.1016/j.jssc.2011.09.019
%T Sorption and desorption properties of a CaH2/MgB2/CaF2 reactive hydride composite as potential hydrogen storage material
%U https://doi.org/10.1016/j.jssc.2011.09.019
11 
%X The hydrogenation behavior of 3CaH2+4MgB2+CaF2 composite was studied by manometric measurements, powder X-ray diffraction, differential scanning calorimetry and attenuated total reflection infrared spectroscopy. The maximum observed quantity of hydrogen loaded in the composite was 7.0 wt%. X-ray diffraction showed the formation of Ca(BH4)2 and MgH2 after hydrogenation. The activation energy for the dehydrogenation reaction was evaluated by DSC measurements and turns out to be 162±15 kJ mol−1 H2. This value decreases due to cycling to 116±5 kJ mol−1 H2 for the third dehydrogenation step. A decrease of ca. 25–50 °C in dehydrogenation temperature was observed with cycling. Due to its high capacity and reversibility, this composite is a promising candidate as a potential hydrogen storage material.