The present status and current developments of research on Mg-Ni-based hydrogen storage alloys are summarized. Mg-Ni-hased hydrogen storage alloys have the advantages of high hydrogen storage capacity, rich mineral sources and low material cost. The main factors that affect hydrogen storage properties of Mg-Ni-hased hydrogen storage alloys are briefly analysed. It is summarized that the use of techniques to make amorphous or nanocrystalline structure,partial substitution of foreign elements, and adding catalysts are highly effective methods of improving hydrogenation properties. Furthermore, the development orientation of Mg-Ni-hased hydrogen storage alloys in the future is proposed. It is pointed that Mg-Ni-based hydrogen storage alloys are promising materials, but to achieve practical application, there are still some issues for us to solve.%系统阐述了近年来Mg-Ni基储氢合金的研究开发概况,指出Mg-Ni基储氢合金具有放电容量高、资源丰富、价格低廉等突出优点,分析了影响Mg-Ni基储氢合金储氢性能的主要因素,总结了近年来采用的行之有效的改进方法,主要有制备非晶/纳米晶、元素替代、添加催化剂等,并对Mg-Ni基储氢合金今后的发展方向进行了探讨与展望,指出Mg-Ni基储氢合金虽然前景可观,但是要实现实际应用仍然存在一些问题需要解决.
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