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This article is based on Mg 2 Ni -type hydrogen storage alloy at home and abroad , established to the Mg 2 Ni -type hydrogen storage alloy as the research object , intended alloy composition : Mg < sub > 20 Ni ( 10-x0M x (M = Co, Cu, Mn; x = 1,2,3,4), using vacuum induction furnace smelting with a He atmosphere . partial alloy re- melting and rapid quenching rotating copper roller in order to prevent the volatilization of Mg in the smelting , continuous length , thickness and uniform ribbons by XRD quenched alloys . the SEM test alloy phase structure and morphology ; PARSTT2273 advanced electrochemical tester cast and the quenched alloys kinetic performance ; the PCT curve tester cast and quenched alloys gaseous hydrogen absorption curve the results show that : Co. substituted Ni not changed the alloy main phase of Mg 2 Ni , but it makes the alloy formed MgCo 2 phase and an Mg phase , and with the increase in the content of Co , MgCo 2 phase and Mg relative to a corresponding increase in Co replaced by Ni increases the alloy unit cell volume and refinement of the alloy grain size , the resulting alloy gaseous hydrogen capacity and improve the dynamic performance . faster the alloy quenched amorphous phase appears , along with the fast quenching speed increase , amorphous degree of increase , resulting alloy has better gaseous hydrogen absorption capacity and kinetic properties of Cu replaced by Ni did not change the structure of the alloy phase , still has single phase Mg 2 Ni, the and elements Cu and Mg 2 Ni solid solution and fully integrated into the Mg 2 Ni to make alloy gaseous hydrogen capacity is reduced with the increase of Cu , Cu obvious the alloy chalking reduced grain size , will help to improve its dynamic performance . rapid quenching the alloy amorphous , but also the right amount to improve its gaseous hydrogen absorption amount and kinetic properties . Mn substituted Ni alloy MnNi of Mg phase and a small amount of phase, and as the Mn content increases , the main phase of Mg 2 Ni phase reduction , Mg phase and MnNi phase increase . Mn substituted Ni increases the alloy unit cell volume , and refinement of the alloy grain size , resulting alloy improve the dynamic performance , but reduce the amount of gaseous hydrogen absorption increased with increasing Mn content fast quenching treatment make alloy amorphous phase , and with the increase in the speed of quenching degree of amorphous increases, resulting alloy gaseous hydrogen absorption capacity and kinetic performance improve with the increase in the speed of quenching .
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