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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202303173
|2 doi
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|a pubmed25n1193.xml
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|a eng
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|a Xu, Nuo
|e verfasserin
|4 aut
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|a PdNi Biatomic Clusters from Metallene Unlock Record-Low Onset Dehydrogenation Temperature for Bulk-MgH2
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|c 2023
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 21.09.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2023 Wiley-VCH GmbH.
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|a Hydrogen storage has long been a priority on the renewable energy research agenda. Due to its high volumetric and gravimetric hydrogen density, MgH2 is a desirable candidate for solid-state hydrogen storage. However, its practical use is constrained by high thermal stability and sluggish kinetics. Here, PdNi bilayer metallenes are reported as catalysts for hydrogen storage of bulk-MgH2 near ambient temperature. Unprecedented 422 K beginning dehydrogenation temperature and up to 6.36 wt.% reliable hydrogen storage capacity are achieved. Fast hydrogen desorption is also provided by the system (5.49 wt.% in 1 h, 523 K). The in situ generated PdNi alloy clusters with suitable d-band centers are identified as the main active sites during the de/re-hydrogenation process by aberration-corrected transmission electron microscopy and theoretical simulations, while other active species including Pd/Ni pure phase clusters and Pd/Ni single atoms obtained via metallene ball milling, also enhance the reaction. These findings present fundamental insights into active species identification and rational design of highly efficient hydrogen storage materials
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|a Journal Article
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|a bilayer metallene
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|a clusters
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|a d-band center
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|a hydrogen storage materials
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|a magnesium hydride
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|a single atoms
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|a Wang, Kaiwen
|e verfasserin
|4 aut
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|a Zhu, Yunfeng
|e verfasserin
|4 aut
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|a Zhang, Yao
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 35(2023), 38 vom: 06. Sept., Seite e2303173
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnas
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| 773 |
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|g volume:35
|g year:2023
|g number:38
|g day:06
|g month:09
|g pages:e2303173
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|u http://dx.doi.org/10.1002/adma.202303173
|3 Volltext
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