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Improvement of Mg‐Based Hydrogen Storage Materials by Metal Catalysts: Review and Summary
Author(s) -
Yang Xinglin,
Zhang Jiaqi,
Hou Quanhui,
Guo Xintao,
Xu Guanzhong
Publication year - 2021
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202102475
Subject(s) - hydrogen storage , dehydrogenation , magnesium hydride , catalysis , hydrogen , materials science , hydride , transition metal , doping , chemical engineering , metal , nanotechnology , chemistry , metallurgy , organic chemistry , optoelectronics , engineering
Magnesium hydride (MgH 2 ) 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 MgH 2 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, MgH 2 nanocrystallization and other methods can greatly improve the hydrogen absorption and dehydrogenation performance of MgH 2 . Therefore, this paper reviews and summarizes the modification effect of transition metal catalyst doping on the hydrogen storage performance of MgH 2 , especially the catalysis on the de/rehydrogenation performance of MgH 2 . In addition, promoting effects of carbon materials, transition metal alloys and compounds on the hydrogen storage performance of MgH 2 were also summarized. Finally, the existing problems and challenges of MgH 2 as hydrogen storage materials are discussed, and some possible strategies are proposed.