超点阵R-Mg-Ni基合金结构和储氢特性研究现状  

Research status in structure and hydrogen storage features of superlattice R-Mg-Ni-based alloys

作　　者：陈子亮[1] 李永涛[1] 张庆安[1] 

机构地区：[1]安徽工业大学材料科学与工程学院,安徽马鞍山243000

出　　处：《功能材料》2015年第10期10007-10012,共6页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51271002);国家青年自然科学基金资助项目(51301002);安徽工业大学研究生创新研究基金资助项目(2012009)

摘　　要：由Laves型[A2B4]和Ca Cu5型[AB5]亚单元以一定比率沿c轴有序堆垛而成的超点阵R-Mg-Ni基储氢合金(R=稀土元素、Ca元素),因具有储氢容量高、可逆性好以及动力学与热力学行为温和可控等优势被认为是新一代镍氢电池最理想的候选负极材料。本文介绍了超点阵R-Mg-Ni基合金的结构特点和储氢特性,着重阐述了结构、Mg元素及氢化行为三者之间的关系,并指出了这类合金在储氢机制方面需要进一步探究的关键性问题。R-Mg-Ni-based( R = rare earth elements,Ca element) superlattice alloys,which are made up of Laves-type[A2B4]and Ca Cu5-type [AB5]cells stacked along the c axis,possess the controllable kinetic /thermodynamics properties as well as the high hydrogen storage capacity and good reversibility,so they are considered as the most ideal negative materials for new generation Ni / MH battery. The present situation of research of structure characteristics and hydrogen storage features of R-Mg-Ni-based superlattice alloys are reviewed. Especially,this paper focuses on describing the relationship among the structure,Mg element and hydrogenation behavior of R-Mg-Ni-based superlattice alloys. Finally,the key issues related to the hydrogen storage mechanism which needed to be solved in future were further pointed out.

关 键 词：R-Mg-Ni基合金 超点阵 结构特点 储氢特性 

分 类 号：TK91[动力工程及工程热物理] TQ116.2[化学工程—无机化工]