稀土基AB_5型复合贮氢合金的研究进展

Progress in Investigation of Rare Earth-Based AB_5-Type Composite Hydrogen Storage Alloys

制备复合合金是改善贮氢合金性能的一条有效途径。本文对国内外各种多元以及多相稀土复合贮氢材料的研究现状进行了综合评述,主要涉及了AB5-AB2型复合贮氢合金和镁基-AB5型纳米复合贮氢合金的进展。阐述了各种复合材料的组成,微观结构以及电化学性能等,并展望了今后复合贮氢材料的研究方向为应用基础性的研究,如复合作用机制、对热力学性能的影响等方面的研究。

Composite hydrogen storage alloys has developed very quickly during the recent decade. To prepare composite alloys is a effective way to improve electrochemical characteristics of hydrogen storage electrode materials. The sciences of multi-element and multi-phase rare earth composite hydrogen storage al- loys were reviewed. AB5-AB2 type and Mg-based AB5type nano-crystalline composite hydrogen storage alloys were introduced and discussed. Electrochemical properties, composition, and microstructure of these composite material were discussed. Moreover, future prospect in application of composite hydrogen storage alloys is the fundamental research, such as mechanism of composite action, thermodynamic property, etc.