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在氩气保护下,采用机械合金化法制备Mg_(10)Al_((7-x))Li_2Ti_x(x=0,1,2,3)合金,并通过XRD、SEM以及DSC等手段对合金进行表征。结果表明,适量的Ti替代Al可以提高合金的吸氢量、降低合金的初始氢化/脱氢温度和提高合金氢化/脱氢动力学性能。Mg_(10)Al_((7-x))Li_2Ti_x(x=1,2,3)合金样品比Mg10Al7Li2合金的初始氢化温度都降低了62K,而初始脱氢温度则分别降低了77、98和59K。当Ti的替代量为x=2时,合金的综合储氢性能最好。
Mg_ (10) Al_ (7-x)) Li_2Ti_x (x = 0,1,2,3) alloys were prepared by mechanical alloying under argon gas and the alloys were characterized by XRD, SEM and DSC Characterization. The results show that proper Ti substitution for Al can increase the amount of hydrogen absorbed by the alloy, reduce the initial hydrogenation / dehydrogenation temperature and improve the hydrogenation / dehydrogenation kinetics of the alloy. The initial hydrogenation temperature of Mg_ (10) Al_ ((7-x)) Li_2Ti_x (x = 1, 2, 3) alloy decreased by 62K compared with Mg10Al7Li2 alloy, while the initial dehydrogenation temperature decreased by 77, 98 and 59K . When the replacement amount of Ti is x = 2, the alloy has the best comprehensive hydrogen storage performance.