The La(2-x)Ti(x)MgNi(9) (x = 0.1, 0.2, 0.3, 0.4) alloys were prepared by magnetic levitation melting under Ar atmosphere. The effects of partial substitution Ti for La on the phase structures, hydrogen-storage proper-ties and electrochemical characteristics of the alloys were investigated systematically. For La(2-x)Ti(x)MgNi(9) (x = 0.1, 0.2, 0.3, 0.4) alloys, LaNi(5), LaNi(3) and LaMg(2)Ni(9) are the main phases, the maximum hydrogen-storage capacity is 1.51, 1.36, 1.35 and 1.22 wt%, respectively. The absorption-desorption plateau pressure of the alloys first decreases and then increases with increase of Ti content, and the La(1.8)MgTi(0.2)Ni(9) alloy has the lowest absorption-desorption plateau pressure. The discharge voltage of the alloy electrodes rises with increasing the amount of Ti content. The La(1.8)Ti(0.2)MgNi(9) alloy electrode presents good electrochemical performance. (C) 2009 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.