Improvement of Mg-Based Hydrogen Storage Materials by Metal Catalysts: Review and Summary,ChemistrySelect

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Improvement of Mg-Based Hydrogen Storage Materials by Metal Catalysts: Review and Summary
ChemistrySelect ( IF 1.9 ) Pub Date : 2021-09-06 , DOI: 10.1002/slct.202102475
Xinglin Yang ₁ , Jiaqi Zhang ₁ , Quanhui Hou _{1,

2} , Xintao Guo ₁ , Guanzhong Xu ₁

Affiliation

Magnesium hydride (MgH₂) has become a very promising hydrogen storage material because of its high hydrogen storage capacity, good reversibility and low cost. However, high thermodynamic stability and slow kinetic performance of MgH₂ limit its practical application. In the past few decades, many alternative methods have been designed to solve this problem. A large number of studies have demonstrated that the use of metal catalyst doping modification, MgH₂ nanocrystallization and other methods can greatly improve the hydrogen absorption and dehydrogenation performance of MgH₂. Therefore, this paper reviews and summarizes the modification effect of transition metal catalyst doping on the hydrogen storage performance of MgH₂, especially the catalysis on the de/rehydrogenation performance of MgH₂. In addition, promoting effects of carbon materials, transition metal alloys and compounds on the hydrogen storage performance of MgH₂ were also summarized. Finally, the existing problems and challenges of MgH₂ as hydrogen storage materials are discussed, and some possible strategies are proposed.

中文翻译：

金属催化剂对镁基储氢材料的改进：综述与总结

氢化镁(MgH ₂ )由于其储氢容量高、可逆性好、成本低而成为一种极具发展前景的储氢材料。然而，MgH _{2 的}高热力学稳定性和缓慢的动力学性能限制了其实际应用。在过去的几十年里，人们设计了许多替代方法来解决这个问题。大量研究表明，采用金属催化剂掺杂改性、MgH ₂纳米晶化等方法可以大大提高MgH _{2 的}吸氢和脱氢性能。因此，本文综述和总结了过渡金属催化剂掺杂对MgH2储氢性能的改性作用。₂，特别是对MgH ₂脱/再氢化性能的催化作用。此外，还总结了碳材料、过渡金属合金和化合物对MgH ₂储氢性能的促进作用。最后，讨论了MgH ₂作为储氢材料存在的问题和挑战，并提出了一些可能的策略。

更新日期：2021-09-06

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