The improvement of hydrogen storage properties of ball-milled Mg-Al-Ti-Zr-C composite was studied in this paper. It has been previously shown, that the addition of Ti, Zr, Al and C improves storage properties of Mg. This beneficial effect of additives upon hydrogen storage properties can be explained by catalysis by the nanoparticles rich in Ti, Zr or Al located on the surface of Mg grains. They provide effective pathways for the hydrogen diffusion into the MgH2. The morphological and microstructural characteristics were investigated by scanning electron microscope Tescan Lyra 3 and by X-ray diffraction. The hydrogen sorption was measured by Sieverts method using Setaram PCT-Pro device.Studied experimental composite absorbed 4.2 wt.% H2 at 573 K and 3 wt.% H2 at 523K within 10 min. The hydrogen storage capacity of the composite was about 4.6% wt.% H2 and 4.2% wt.% H2 at 573K and 523K, respectively.Keywords: Hydrides, hydrogen storage, catalysis, hydrogen, Mg-alloys
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