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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202208337
|2 doi
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|a pubmed24n1167.xml
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|a (DE-627)NLM350401357
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|a (NLM)36528302
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Chen, Ziliang
|e verfasserin
|4 aut
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|a Reviving Oxygen Evolution Electrocatalysis of Bulk La-Ni Intermetallics via Gaseous Hydrogen Engineering
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 20.03.2023
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|a Date Revised 20.03.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2023 The Authors. Advanced Materials published by Wiley-VCH GmbH.
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|a A hydrogen processing strategy is developed to enable bulk LaNi5 to attain high activity and long-term stability toward the electrocatalytic oxygen evolution reaction (OER). By a combination of in situ Raman and quasi in situ X-ray absorption (XAS) spectra, secondary-electron-excited scanning transmission electron microscopy (STEM) patterns as well as the Rietveld method and density functional theory (DFT) calculations, it is discovered that hydrogen-induced lattice distortion, grain refinement, and particle cracks dictate the effective reconstruction of the LaNi5 surface into a porous hetero-nanoarchitecture composed of uniformly confined active γ-NiOOH nanocrystals by La(OH)3 layer in the alkaline OER process. This significantly optimizes the charge transfer, structural integrity, active-site exposure, and adsorption energy toward the reaction intermediates. Benefiting from these merits, the overpotential (322 mV) at 100 mA cm-2 for the hydrogen-processed OER catalyst deposited on nickel foam is reduced by 104 mV as compared to the original phase. Notably, it exhibits remarkable stability for 10 days at an industrial-grade current density of more than 560 mA cm-2 in alkaline media
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|a Journal Article
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|a heterostructures
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|a hydrogen storage intermetallics
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|a oxygen evolution reaction
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|a phase reconstruction
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|a rare-earth metals
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|a Yang, Hongyuan
|e verfasserin
|4 aut
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|a Mebs, Stefan
|e verfasserin
|4 aut
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|a Dau, Holger
|e verfasserin
|4 aut
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|a Driess, Matthias
|e verfasserin
|4 aut
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|a Wang, Zhaowu
|e verfasserin
|4 aut
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|a Kang, Zhenhui
|e verfasserin
|4 aut
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|a Menezes, Prashanth W
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 35(2023), 11 vom: 14. März, Seite e2208337
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:35
|g year:2023
|g number:11
|g day:14
|g month:03
|g pages:e2208337
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|u http://dx.doi.org/10.1002/adma.202208337
|3 Volltext
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