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|a 10.1002/adma.202103392
|2 doi
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|a pubmed24n1099.xml
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|a (DE-627)NLM329799258
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|a (NLM)34436805
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|a DE-627
|b ger
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|a eng
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|a Guan, Daqin
|e verfasserin
|4 aut
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|a Exceptionally Robust Face-Sharing Motifs Enable Efficient and Durable Water Oxidation
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|c 2021
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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
|b cr
|2 rdacarrier
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|a Date Revised 13.10.2021
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2021 Wiley-VCH GmbH.
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|a Corner-sharing oxides usually suffer from structural reconstruction during the bottleneck oxygen-evolution reaction (OER) in water electrolysis. Therefore, introducing dynamically stable active sites in an alternative structure is urgent but challenging. Here, 1D 5H-polytype Ba5 Bi0.25 Co3.75 FeO14- δ oxide with face-sharing motifs is identified as a highly active and stable candidate for alkaline OER. Benefiting from the stable face-sharing motifs with three couples of combined bonds, Ba5 Bi0.25 Co3.75 FeO14- δ can maintain its local structures even under high OER potentials as evidenced by fast operando spectroscopy, contributing to a negligible performance degradation over 110 h. Besides, the higher Co valence and smaller orbital bandgap in Ba5 Bi0.25 Co3.75 FeO14- δ endow it with a much better electron transport ability than its corner-sharing counterpart, leading to a distinctly reduced overpotential of 308 mV at 10 mA cm-2 in 0.1 m KOH. Further mechanism studies show that the short distance between lattice-oxygen sites in face-sharing Ba5 Bi0.25 Co3.75 FeO14- δ can accelerate the deprotonation step (*OOH + OH- = *OO + H2 O + e- ) via a steric inductive effect to promote lattice-oxygen participation. In this work, not only is a new 1D face-sharing oxide with impressive OER performance discovered, but also a rational design of dynamic stable and active sites for sustainable energy systems is inaugurated
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|a Journal Article
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|a 1D 5H-polytype oxides
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|a dynamically stable active sites
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|a face-sharing motifs
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|a lattice-oxygen participation
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|a oxygen evolution reaction
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| 700 |
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|a Zhang, Kaifeng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hu, Zhiwei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wu, Xinhao
|e verfasserin
|4 aut
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1 |
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|a Chen, Jeng-Lung
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Pao, Chih-Wen
|e verfasserin
|4 aut
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| 700 |
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|a Guo, Yanan
|e verfasserin
|4 aut
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|a Zhou, Wei
|e verfasserin
|4 aut
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| 700 |
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|a Shao, Zongping
|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 33(2021), 41 vom: 05. Okt., Seite e2103392
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:33
|g year:2021
|g number:41
|g day:05
|g month:10
|g pages:e2103392
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|u http://dx.doi.org/10.1002/adma.202103392
|3 Volltext
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