Hydrogen-induced amorphization in LaNi3–xMnx compounds

Effects of Mn content on the hydrogen-induced amorphization of LaNi3–xMnx (x=0.0, 0.1, 0.3 and 0.5) hydrogen storage alloys were studied systematically. All the alloys were prepared using a rapid quenching and annealing method. As the charging time increased, the hydrogen-induced amorphization occurred gradually in all the compounds for the first cycle. During the discharge process, discharge potential plateau was not observed in LaNi3. As Mn content increased, however, structural changes were inhibited partly, and a plateau evolved gradually in the discharge curves.