Mg-based hydrogen storage materials are considered to be one of the most promising soild hydro-gen storage materials because of its advantage such as large hydrogen storage capacity ,low cost and so on . However ,the slow absorption/desorption kinetics and the high absorption/desorption temperature hin-dered the application of the M g-based hydrogen storage alloys .Element partial substitution and nanocom-posite are the preferred methods to improve the performance of magnesium-based hydrogen storage materi-als .In this paper modification of Mg-based hydrogen storage materials are reviewed and the development trend of the materials is also suggested .
