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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202300347
|2 doi
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|a pubmed25n1179.xml
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|a (DE-627)NLM353871702
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|a (NLM)36881381
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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 Liao, Hanxiao
|e verfasserin
|4 aut
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|a Oxyanion Engineering Suppressed Iron Segregation in Nickel-Iron Catalysts Toward Stable Water Oxidation
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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 25.05.2023
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|a Date Revised 25.05.2023
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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 Nickel-iron catalysts represent an appealing platform for electrocatalytic oxygen evolution reaction (OER) in alkaline media because of their high adjustability in components and activity. However, their long-term stabilities under high current density still remain unsatisfactory due to undesirable Fe segregation. Herein, a nitrate ion (NO3 - ) tailored strategy is developed to mitigate Fe segregation, and thereby improve the OER stability of nickel-iron catalyst. X-ray absorption spectroscopy combined with theoretical calculations indicate that introducing Ni3 (NO3 )2 (OH)4 with stable NO3 - in the lattice is conducive to constructing the stable interface of FeOOH/Ni3 (NO3 )2 (OH)4 via the strong interaction between Fe and incorporated NO3 - . Time of flight secondary ion mass spectrometry and wavelet transformation analysis demonstrate that the NO3 - tailored nickel-iron catalyst greatly alleviates Fe segregation, exhibiting a considerably enhanced long-term stability with a six-fold improvement over FeOOH/Ni(OH)2 without NO3 - modification. This work represents a momentous step toward regulating Fe segregation for stabilizing the catalytic performances of nickel-iron catalysts
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|a Journal Article
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|a Fe segregations
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|a catalytic stability
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|a chemical interactions
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|a nitrate ions
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| 650 |
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|a oxygen evolution reactions
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| 700 |
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|a Ni, Ganghai
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Tan, Pengfei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Kang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Xuanzhi
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Hele
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chen, Kejun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zheng, Xusheng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Min
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Pan, Jun
|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), 21 vom: 07. Mai, Seite e2300347
|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:21
|g day:07
|g month:05
|g pages:e2300347
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|u http://dx.doi.org/10.1002/adma.202300347
|3 Volltext
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