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240930s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202409530
|2 doi
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|a pubmed24n1553.xml
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|a (DE-627)NLM378308378
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|a (NLM)39344144
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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 Liu, Sijia
|e verfasserin
|4 aut
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|a Topological Synthesis of 2D High-Entropy Multimetallic (Oxy)hydroxide for Enhanced Lattice Oxygen Oxidation Mechanism
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 30.09.2024
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|a published: Print-Electronic
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|a Citation Status Publisher
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|a © 2024 Wiley‐VCH GmbH.
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|a Owing to sluggish reaction kinetics and high potential, oxygen evolution reaction (OER) electrocatalysts face a trade-off between activity and stability. Herein, an innovative topological strategy is presented for preparing 2D multimetallic (oxy)hydroxide, including ternary CoFeZn, quaternary CoFeMnZn, and high-entropy CoFeMnCuZn. The key to the synthesis lies in using Ca-rich brownmillerite oxide as a precursor, which possesses inherent structural flexibility enabling tailored elemental adjustments and topologically transforms from a point-shared structure of metal-oxygen octahedrons into an edge-shared structure under alkaline conditions. The presence of Zn in the catalysts causes a shift in the center of the O2p band toward the Fermi level, resulting in more Co4+ species, which drive holes into oxygen ligands to promote intramolecular oxygen coupling. The triggered lattice oxidation mechanism is identified by detecting peroxo-like (O2 2-) negative species using tetramethylammonium chemical probe, along with 18O isotope labeling experiments. As a result, the catalyst demonstrates an overpotential of 267 mV at 10 mA cm-2, ranking it among the top-performing non-Ni-based catalysts. Importantly, the catalysts also show high Fe-leaching resistance during OER compared to conventional NiFe and CoFe hydroxides/(oxy)hydroxides. The assembled zinc-air battery enables stable operation for over 225 h at a low charging voltage of 1.93 V
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|a Journal Article
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|a 2D
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|a electrocatalysis
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|a high entropy
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|a oxygen evolution reaction
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|a topological transformation
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|a Jia, Baorui
|e verfasserin
|4 aut
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|a Wang, Yong
|e verfasserin
|4 aut
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|a Zhao, Yongzhi
|e verfasserin
|4 aut
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|a Liu, Luan
|e verfasserin
|4 aut
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|a Fan, Fengsong
|e verfasserin
|4 aut
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|a Qin, Yunpu
|e verfasserin
|4 aut
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|a Liu, Jianfang
|e verfasserin
|4 aut
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|a Jiang, Yirui
|e verfasserin
|4 aut
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|a Liu, Hongru
|e verfasserin
|4 aut
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|a Zhao, Hong
|e verfasserin
|4 aut
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|a Li, Hao
|e verfasserin
|4 aut
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|a Zhou, Wenxiang
|e verfasserin
|4 aut
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|a Wu, Haoyang
|e verfasserin
|4 aut
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|a Zhang, Deyin
|e verfasserin
|4 aut
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|a Qu, Xuanhui
|e verfasserin
|4 aut
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| 700 |
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|a Qin, Mingli
|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 (2024) vom: 29. Sept., Seite e2409530
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g year:2024
|g day:29
|g month:09
|g pages:e2409530
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|u http://dx.doi.org/10.1002/adma.202409530
|3 Volltext
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|a AR
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|j 2024
|b 29
|c 09
|h e2409530
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