低压力AB_5型储氢合金的研究

Study of AB_5 Type Metal Hydrides with Low Pressure

目的是利用我国丰富稀土资源来开发具有较低压力AB5型储氢合金,且具有较大的储氢量和良好的动力学、热力学性能。利用Mn、Al、Cr等原子半径较大的元素置换B侧Ni,使得晶格扩大,可以降低合金的离解压。在A侧,采用高镧含量的混合稀土可以得到储氢性能(平衡压力低)和活化性能更好的、符合研究要求的稀土储氢合金。

The aim is to get AB5 type metal hydrides with low pressure and excellent kinetic ＆ thermodynamic properties using Chinese rich rare earth resource. At B site, Ni is replaced by Mn, Al, Cr to enlarge crystal lattice so as to reduce pressure of alloys, while at A site, thulium with high La content is adopted and alloys with perfect properties are gotten and these AB5 type metal hydrides satisfy the target.