%0 journal article
%@ 1932-7447
%A Suarez-Alcantara, K., Soerby, M.H., Pistidda, C., Karimi, F., Saldan, I., Hauback, B.C., Klassen, T., Dornheim, M.

%D 2015
%J The Journal of Physical Chemistry  C
%N 21
%P 11430-11437 
%R doi:10.1021/acs.jpcc.5b01961
%T Synchrotron Diffraction Studies of Hydrogen Absorption/Desorption on CaH2 + MgB2 Reactive Hydride Composite Mixed With Fluorinated Compounds
%U https://doi.org/10.1021/acs.jpcc.5b01961
21 
%X The reactive hydride composites 9CaH2 + CaF2 + 10MgB2, 10Ca(BH4)2 + 9MgH2 + MgF2, and 9Ca(BH4)2 + Ca(BF4)2 + 10MgH2 were prepared by ball milling. Their properties toward hydrogen absorption/desorption were tested by means of manometric measurements. The highest hydrogen storage capacity was obtained for 9CaH2 + CaF2 + 10MgB2 (7.6 wt %) at the first cycle. The effects of CaF2, MgF2, or Ca(BF4)2 on the dehydrogenation reaction were studied by means of in situ synchrotron radiation powder X-ray diffraction (in situ SR-PXD) and differential scanning calorimetry (DSC). The high resolution SR-PXD technique was used to confirm the formation of hydrogenated products and side products in the 9CaH2 + CaF2 + 10MgB2 reactive hydride composites. These studies indicate the formation of a complex mixture of phases.