研究了以富镧稀土金属(简称Ml)为吸氢元素组成的MlNi_5合金的贮氢特性。给出了试验合金不同温度下的等温线和动力学曲线。同时计算出MlNi_5氢化物的各种热力学参数,并就该合金的主要贮氢特性与LaNi_5和MmNi_5材料作详细比较和讨论。作者认为,M1Ni_5材料资源丰富,性能优良,制取方便,价格低廉,是一种很有实用价值的贮氢金属材料。 The hydrogen storage properties of MlNi_5 alloy composed of lanthanum-rich rare earth metal (abbreviated as Ml) as hydrogen absorbing element were studied. The isotherms and kinetics curves of the tested alloys at different temperatures are given. At the same time, various thermodynamic parameters of MlNi_5 hydride were calculated, and the main hydrogen storage properties of the alloy were compared with those of LaNi_5 and MmNi_5. The author believes that, M1Ni_5 material is rich in resources, excellent performance, easy preparation, low prices, is a very valuable hydrogen storage metal materials.