Hydrogen storage properties of FeTi1.3 plus x wt%Mm (x=0.0, 1.5, 3.0, 4.5,6.0) hydrogen storage alloys

In this paper, the hydrogen storage properties of FeTi1.3+x wt%Mm (x= 0.0, 1.5, 3.0, 4.5, 6.0) hydrogen storage alloys, including the activation chara cteristics, pressure-composition isotherms and hydrogen storage capacities, have been investigated systematically. The results indicate that the activ ation characteristics of an FeTi alloy modified with excess Ti and a small amount of Mm has been improved markedly. The alloys absorb a noticeable amo unt of hydrogen after a short period of incubation time at room temperature without any previous thermal treatment. Hydrogen storage properties of mod ified alloys vary with the content of Mm and the reaction temperature. (C) 2000 International Association for Hydrogen Energy. Published by Elsevier S cience Ltd. All rights reserved.