Activation and Disproportionation of ZrFe Alloy as Hydrogen Storage Material.

As a hydrogen storage material, ZrFe alloy has many advantages such as fast hydrogen absorption speed, high tritium recovery efficiency, strong anti-pulverization ability, and difficulty self-igniting in air. ZrFe alloy has lower hydrogen absorption pressure at room temperature than LaNi alloy. Compared with the ZrVFe alloy, the hydrogen release temperature of ZrFe is lower so that the material can recover hydrogen isotopes at lower hydrogen concentration efficiently. Unfortunately, the main problem of ZrFe alloy in application is that a disproportionation reaction is easy to occur after hydrogen absorption at high temperature. At present, there is little research on the generation and influencing factors of a disproportionation reaction in ZrFe alloy. In this paper, the effects of temperature and hydrogen pressure on the disproportionation of ZrFe alloy were studied systematically. The specific activation conditions and experimental parameters for reducing alloy disproportionation are given, which provide a reference for the specific application of ZrFe alloy.