Hydrogen storage properties of nano-composites of Mg and Zr–Ni–Cr alloys

Autor:	Jun Yang, M. Ciureanu, R. Roberge
Rok vydání:	2000
Předmět:	Materials science Hydride Mechanical Engineering Alloy Metallurgy Zirconium alloy engineering.material Condensed Matter Physics Catalysis Amorphous solid Hydrogen storage Chemical engineering Mechanics of Materials Desorption X-ray crystallography engineering General Materials Science
Zdroj:	Materials Letters. 43:234-239
ISSN:	0167-577X
DOI:	10.1016/s0167-577x(99)00265-7
Popis:	Mg and Zr–Ni–Cr alloy nano-composite hydrogen storage materials have been prepared by high energy mechanical milling (MM) of Mg powders with either crystalline ZrNiCr and ZrNi1.6Cr0.4 powders or mechanically milled amorphous ZrNiCr and ZrNi1.6Cr0.4 powders. Nano-composites of amorphous Zr–Ni–Cr alloy and Mg have better desorption kinetics compared to crystalline Zr–Ni–Cr alloy and Mg nano-composites. Amorphous ZrNi1.6Cr0.4 and Mg nano-composites desorb larger amount of H2 much faster than amorphous ZrNiCr and Mg nano-composites. The nano-composite of 35 wt.% amorphous ZrNi1.6Cr0.4 and Mg releases 4.3 wt.% H2 at 300°C in 30 min. X-ray diffraction revealed that there are no reactions between Mg and Zr–Ni–Cr alloys in the milling, activation, and subsequent cycling processes, proving that amorphous ZrNi1.6Cr0.4 is an effective hydrogen absorption and desorption catalyst.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d6cb91474e33306eb085eb568e3226cd https://doi.org/10.1016/s0167-577x(99)00265-7 Zobrazit plný text záznamu Full Text from ScienceDirect