Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2009-10-01

Journal: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

Included Journals: Scopus、SCIE、EI

Volume: 34

Issue: 19

Page Number: 8127-8134

ISSN: 0360-3199

Key Words: Mg-Cu nanoparticles; Intermetallic compounds; Arc discharge; Hydrogenation treatment

Abstract: Mg-Cu alloy nanoparticles were in situ prepared by a physical vapor condensation method (arc discharge) in a mixture of argon and hydrogen. Four crystalline phases, Mg, Mg(2)Cu, MgCu(2) and MgO, were formed simultaneously during the arc-discharge evaporation. Detailed experiments revealed that nanostructured hydrogen-active phases of Mg(2)Cu and Mg exhibit enhanced hydrogen absorption kinetics possibly due to the small grain size and surface defects. The maximal hydrogen storage contents of Mg-Cu alloy nanoparticles can reach 2.05 +/- 0.10 wt% at 623 K. (c) 2009 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.