Strategies to enhance hydrogen storage performances in bulk Mg-based hydrides
Strategies to enhance hydrogen storage performances in bulk Mg-based hydrides
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DOI：
10.1016/j.jmst.2022.12.054
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发表时间：
2023-03
期刊：
影响因子：
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通讯作者：
X. Tan;Manjin Kim;K. Yasuda;K. Nogita
中科院分区：
文献类型：
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作者：
X. Tan;Manjin Kim;K. Yasuda;K. Nogita
块状镁基储氢材料有潜力为能源储存和运输多样化提供低成本解决方案。与需要在氢气或惰性气体气氛下处理和加工的纳米粉末相比，块状镁基合金更安全且更抗氧化。传统方法和现有基础设施可用于加工和处理这些材料。然而，块状镁合金具有较小的比表面积，导致氢吸附动力学较慢、平衡温度和氢化物形成焓较高。这项工作回顾了添加一系列合金元素和使用创新加工方法（例如快速凝固和剧烈塑性变形工艺）来克服这些缺点的效果。讨论了每种方法的挑战、优点和缺点以及镁基储氢材料发展的未来前景。
Bulk Mg-based hydrogen storage materials have the potential to provide a low-cost solution to diversify energy storage and transportation. Compared to nano powders which require handling and processing under hydrogen or an inert gas atmosphere, bulk Mg-based alloys are safer and are more oxidation resistant. Conventional methods and existing infrastructures can be used to process and handle these materials. However, bulk Mg alloys have smaller specific surface areas, resulting in slower hydrogen sorption kinetics, higher equilibrium temperatures, and enthalpies of hydride formation. This work reviews the effects of the additions of a list of alloying elements and the use of innovative processing methods, e.g., rapid solidification and severe plastic deformation processes, to overcome these drawbacks. The challenges, advantages, and weaknesses of each method and future perspectives for the development of Mg-based hydrogen storage materials are discussed.