HYDROGENATION PROPERTIES OF MG-AL-TI-ZR-C COMPOSITE

1 Král Lubomír
Co-authors:
1,2 Čermák Jiří 1,3 Roupcová Pavla
Institutions:
1 Institute of Physics of Materials ASCR v.v.i., Brno, Czech Republic, EU
2 CEITEC - Central European Institute of Technology, Brno, Czech Republic, EU
3 BUT - Brno University of Technology, FME, IMSE, Brno, Czech Republic, EU
Conference:
8th International Conference on Nanomaterials - Research & Application, Hotel Voronez I, Brno, Czech Republic, EU, October 19th - 21st 2016
Proceedings:
Proceedings 8th International Conference on Nanomaterials - Research & Application
Pages:
75-79
ISBN:
978-80-87294-71-0
ISSN:
2694-930X
Published:
17th March 2017
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
24 views / 11 downloads
Abstract

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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