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Alloying of Mg/Mg2Ni eutectic by chosen non-hydride forming elements: Relation between segregation of the third element and hydride storage capacity

SYSNO ASEP	0369591
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Alloying of Mg/Mg2Ni eutectic by chosen non-hydride forming elements: Relation between segregation of the third element and hydride storage capacity
Author(s)	Čermák, Jiří (UFM-A)_{RID, ORCID} Král, Lubomír (UFM-A)_{RID, ORCID}
Number of authors	2
Source Title	Journal of Power Sources. - : Elsevier - ISSN 0378-7753 Roč. 197, č. 1 (2012), s. 116-120
Number of pages	5 s.
Language	eng - English
Country	CH - Switzerland
Keywords	Energy storage materials ; Hydrogen storage capacity ; Metal hydrides
Subject RIV	JG - Metallurgy
R&D Projects	GA106/09/0814 GA ČR - Czech Science Foundation (CSF)
	GAP108/11/0148 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z20410507 - UFM-A (2005-2011)
UT WOS	000297394700018
DOI	10.1016/j.jpowsour.2011.09.045
Annotation	Eutectic mixture Mg–11.3 at.% Ni was modified by elements X from the 13th (Al, Ga, In) and 14th group (Si, Ge, Sn and Pb). Phase analysis and distribution of X between primary solid solution Mg–Ni–X and Mg2Ni–X compound was carried out in stabilization annealed samples before hydrogen charging and in hydrided state. In the both states, it was found that X prefers Mg2Ni–X to Mg–Ni–X solid solution, and that the preference is stronger in the hydrided state. The effect is more pronounced for elements X from the 13th group. Suggested explanation was based on influence of X on the formation enthalpy of hydrides. It was observed that In increases the hydrogen storage capacity of the eutectic mixture. The most likely explanation is based on a strong segregation of In to phase Mg2Ni–X, and on a weak tendency of In to form phases with Mg and Ni.
Workplace	Institute of Physics of Materials
Contact	Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
Year of Publishing	2012

Number of the records: 1