Recent Progress in Hydrogen Storage Characteristics of Ti-Based Icosahedral Quasicrystal Alloys

Abstract

cosahedral quasicrystalline phase (I-phase) formed in a number of Ti-based alloys, and the I-phase is well ordered and thermodynamically stable in the alloys. Because Ti-based icosahedral (i) quasicrystal phases, which have a new type of translational long-range order and display noncrystallographic rotational symmetry, are believed to possess a large number of tetrahedral interstitial sites in their quasilattices. Ti-based I-phase alloy was considered as one of the most promising hydrogen storage materials due to thermodynamical stability, suitable chemistry affinity and low cost. Recent year, the Ti-based I-phase alloys containing crystal or amorphous phases were prepared, and microstructure and hydrogen storage characteristics were investigated. Ti-based I-phase alloy becomes one of the most promising hydrogen storage materials due to thermodynamical stability, low cost and high hydrogen capacity, and exhibited good electrochemical hydrogen storage capacity and cycle life property.