Author/Authors :
Lei، نويسنده , , J.P. and Huang، نويسنده , , H. and Dong، نويسنده , , X.L. and Sun، نويسنده , , J.P. and Lu، نويسنده , , B. and Lei، نويسنده , , M.K. and Wang، نويسنده , , Q. and Dong، نويسنده , , C. M. Cao، نويسنده , , G.Z.، نويسنده ,
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, Mg2Cu, MgCu2 and MgO, were formed simultaneously during the arc-discharge evaporation. Detailed experiments revealed that nanostructured hydrogen-active phases of Mg2Cu 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.
Keywords :
Mg–Cu nanoparticles , Intermetallic compounds , arc discharge , Hydrogenation treatment
