Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 862, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2020.158163
Keywords
LaNi5; Metal hydrides; Crystal structure; Magnetic properties; Ni-MH batteries; Hydrogen storage
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This paper provides a comprehensive review of the properties and applications of AB(5) compounds, including crystal structures, formation of metallic hydrides, thermodynamic properties of sorption reaction, and applications in magnetic properties and electrochemical energy storage. It highlights the great potential of this class of materials in gas storage, heat exchange, compression, gas separation, and purification.
This paper is a comprehensive review of the properties of LaNi5 derivatives and other AB(5) compounds with CaCu5 crystal structure (A = Y, lanthanide, Th and B = transition metal, Al, Ge, Si, Sn) and their applications. The crystal structures of the intermetallic compounds are described considering their chemical composition and off-stoichiometry. Same approach is conducted for the metallic hydrides formed by direct reaction of dihydrogen with the intermetallic. The thermodynamic properties of the sorption reaction are presented regarding equilibrium pressure and reversibility. In a second step, outstanding applications are given focusing first on magnetic properties and electrochemical energy storage. Finally, other uses such as gas storage, heat exchange, compression or gas separation and purification are highlighted showing the tremendous possibilities offered by this class of materials. (C) 2020 Elsevier B.V. All rights reserved.
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