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HYDRIDE FORMATION IN CHOSEN LANISN ALLOYS

1 KRÁL Lubomír
Co-authors:
1 ZOBAČ Ondřej 1 ULLATTIL Sanjay 1 ROUPCOVÁ Pavla 2 ZYM Michal 2 SMETANA Bedřich 3,4 SMAJLAJ Merkur 4 RENZ Franz
Institutions:
1 Institute of Physics of Materials CAS v.v.i. ,Brno, Czech Republic, EU, lkral@ipm.cz
2 TUO - Technical University of Ostrava, Ostrava, Faculty of Materials Science and Technology, Department of Chemistry and Physico-Chemical Processes, Czech Republic, EU, bedrich.smetana@vsb.cz
3 Hydrosolid GMBH, Wilhelmsburg, Austria, EU, m.smajlaj@hydrosolid.com
4 LUH - Institute for Coordination Chemistry, Hannover, Germany, EU, franz.renz@acd.uni-hannover.de
Conference:
34th International Conference on Metallurgy and Materials, Orea Congress Hotel Brno, Czech Republic, EU, May 21 - 23, 2025
Proceedings:
Proceedings 34th International Conference on Metallurgy and Materials
ISBN:
978-80-88365-27-3
ISSN:
2694-9296
Licence:
CC BY 4.0
Metrics:
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Abstract

The hydrogen storage properties of ball-milled AB₅-type alloys containing La (a rare earth element) and Ni, Sn were investigated in this study. The experimental alloys were prepared using a compact arc melter under a high-purity argon atmosphere (99.9999%). The influence of microstructure and phase composition on the hydrogen absorption and desorption behavior was examined. The addition of Sn to the LaNi₅ intermetallic significantly reduced the equilibrium pressure without decreasing the maximum hydrogen absorption capacity, up to a Sn content of 10 wt%. Furthermore, increasing the Sn content enhanced the hydrogen absorption rate and slightly stabilized the hydride phase H₆LaNi₅.

Keywords: Hydrides, LaNi5, hydrogen storage, LaNiSn alloys

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