10-16 June 2018
Dalhousie University
America/Halifax timezone
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POS-37 Effect of Addition of Lanthanum on the Hydrogen Storage Properties of TiFe Alloy

12 Jun 2018, 18:00
1h 30m
SUB McInnes Hall (Dalhousie University)

SUB McInnes Hall

Dalhousie University

Poster Competition (Graduate Student) / Compétition affiche (Étudiant(e) 2e ou 3e cycle) Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM) DCMMP Poster Session & Finals: Poster Competition and Mingle Session with Industry Partners (28) / Employers | Session d'affiches DPMCM et finales: Concours d'affiches et rencontres avec partenaires industriels et employeurs (28)

Speaker

Mr Md Meraj Alam (Université du Québec à Trois-Rivières & Indian Institute of Technology Bombay)

Description

TiFe is one of the good candidates for the solid-state hydrogen storage. Despite having fast kinetics and fairly good capacity, it’s first hydrogenation is difficult. In this study, we investigated the effect of addition of lanthanum on the hydrogen storage properties of TiFe alloy. As the melting point of lanthanum is much lower than the ones of the other two elements, synthesis by casting was impossible. Instead ball milling was used to synthesize the compound. It was found that the TiFe alloy is formed after 5 hours of milling. The hydrogen storage properties were measured at room temperature and at a pressure of 20 bars on a home-made Sievert’s apparatus. For the first hydrogenation, the alloy absorbed 1 wt.% of hydrogen in less than 5 minutes. But, the first de-hydrogenation showed a reduced capacity from 1 wt% to 0.65 wt% i.e., a reduction of 0.35 wt%. Further hydrogenation and dehydrogenation shows no further loss in capacity. To understand the loss in capacity, the X-ray diffraction of fully hydrogenated and fully dehydrogenated samples were performed. But from these diffraction patterns a secondary phase was observed. The presence of this secondary phase may explain the loss of capacity. Possible crystal structure of this phase will be discussed.

Primary author

Mr Md Meraj Alam (Université du Québec à Trois-Rivières & Indian Institute of Technology Bombay)

Co-authors

Prof. Pratibha Sharma (Department of Energy Science and Engineering, Indian Institute of Technology Bombay) Prof. Jacques Huot (Département de Chimie, Biochimie et Physique, Institut de recherche sur l'hydrogène, Université du Québec à Trois-Rivières)

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