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240411s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202401018
|2 doi
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|a pubmed24n1453.xml
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|a (DE-627)NLM370913981
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|a (NLM)38602072
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|a DE-627
|b ger
|c DE-627
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|a eng
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|a Zhang, Qi
|e verfasserin
|4 aut
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|a Constructing Bipolar Dual-Active Sites through High-Entropy-Induced Electric Dipole Transition for Decoupling Oxygen Redox
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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 26.06.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2024 Wiley‐VCH GmbH.
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|a It remains a significant challenge to construct active sites to break the trade-off between oxidation and reduction processes occurring in battery cathodes with conversion mechanism, especially for the oxygen reduction and evolution reactions (ORR/OER) involved in the zinc-air batteries (ZABs). Here, using a high-entropy-driven electric dipole transition strategy to activate and stabilize the tetrahedral sites is proposed, while enhancing the activity of octahedral sites through orbital hybridization in a FeCoNiMnCrO spinel oxide, thus constructing bipolar dual-active sites with high-low valence states, which can effectively decouple ORR/OER. The FeCoNiMnCrO high-entropy spinel oxide with severe lattice distortion, exhibits a strong 1s→4s electric dipole transition and intense t2g(Co)/eg(Ni)-2p(OL) orbital hybridization that regulates the electronic descriptors, eg and t2g, which leads to the formation of low-valence Co tetrahedral sites (Coth) and high-valence Ni octahedral sites (Nioh), resulting in a higher half-wave potential of 0.87 V on Coth sites and a lower overpotential of 0.26 V at 10 mA cm-2 on Nioh sites as well as a superior performance of ZABs compared to low/mild entropy spinel oxides. Therefore, entropy engineering presents a distinctive approach for designing catalytic sites by inducing novel electromagnetic properties in materials across various electrocatalytic reactions, particularly for decoupling systems
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|a Journal Article
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|a bifunctional electrocatalyst
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|a decoupling
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|a high‐entropy
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|a lattice distortion
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| 700 |
1 |
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|a Zheng, Zhiyang
|e verfasserin
|4 aut
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1 |
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|a Gao, Runhua
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xiao, Xiao
|e verfasserin
|4 aut
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|a Jiao, Miaolun
|e verfasserin
|4 aut
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|a Wang, Boran
|e verfasserin
|4 aut
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|a Zhou, Guangmin
|e verfasserin
|4 aut
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|a Cheng, Hui-Ming
|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 36(2024), 26 vom: 10. Juni, Seite e2401018
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:36
|g year:2024
|g number:26
|g day:10
|g month:06
|g pages:e2401018
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|u http://dx.doi.org/10.1002/adma.202401018
|3 Volltext
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|d 36
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