中文摘要：

镁基Mg_2Ni储氢合金由于具有理论储氢容量高、资源丰富、价格廉价、质量轻等突出优点而备受关注。然而,该类合金因制备困难、吸放氢动力学性能差,实际应用受到了极大的限制。对近几十年来镁基Mg_2Ni储氢合金的制备和性能改善方面的研究进行了系统综述。在此基础上,指出了该类合金存在的问题及今后的发展方向。

英文摘要：

Mg-based Mg2 Ni hydrogen storage alloys have been extensively studied because of their extremely high theoretical capacity of hydrogen storage, abundant resource, low cost and light weight. However, it is extremely restricted and far from practical applications for difficult preparation and poor hydriding/dehydriding kinetics of these kinds of alloys. This paper reviews the preparation and performance improvement of Mg-based Mg2 Ni hydrogen storage alloys in the recent decades. Furthermore, it figures out the current drawbacks and future development direction of Mg-based Mg2 Ni hydrogen storage alloys.