An overview of RE-Mg-based alloys for hydrogen storage: Structure, properties, progresses and perspectives

作者：Dongsheng Zhou, Chunling Zheng, Yanghuan Zhang, Hanfeng Sun, Peng Sheng, Xin Zhang, Jun Li, Shihai Guo, Dongliang Zhao · 发表于：Journal of Magnesium and Alloys · 年份：2025 · DOI：10.1016/j.jma.2024.12.020 · 被引用次数：75 · 研究领域：Hydrogen Storage and Materials、Ammonia Synthesis and Nitrogen Reduction、Magnesium Alloys: Properties and Applications

• Hydrogen storage properties of different RE-Mg system alloys were evaluated. • Evaluation of electrochemical properties of superlattice-type RE-Mg-based alloy. • Elucidation of the catalytic mechanism of catalysts for RE-Mg alloy system. • A feasible idea for rational design of RE-Mg-based alloys was provided. Rare earth (RE) elements have been successfully utilized in solid-state hydrogen storage as hydrogen-absorbing elements with excellent hydrogen storage properties in terms of safety and efficiency. RE-Mg-based hydrogen storage materials with high magnesium content are considered to be one of the most promising hydrogen storage materials for application due to their high mass/volume hydrogen storage density, moderate required hydrogen pressure, good reversibility, non-toxicity, and harmlessness. Furthermore, RE-Mg-based materials with low magnesium content and superlattice structure show great potential for application in the field of solid-state hydrogen storage. They are also widely used as anode materials for nickel-metal hydride batteries. In this paper, we comprehensively summarized and evaluated the organization and hydrogen storage properties of different RE-Mg system alloys (Mg-RE, Mg-RE-TM (TM=transition metals), and superlattice-type RE-Mg-TM) and the catalytic effect and mechanisms of catalysts on RE-Mg system alloys. The interactions between the types of RE elements, the contents of RE elements, the crystal structures, and the catalysts with the microstruct...