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|a 10.1002/adma.202404692
|2 doi
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|a eng
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|a Wei, Shengjie
|e verfasserin
|4 aut
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|a Planar Chlorination Engineering
|b A Strategy of Completely Breaking the Geometric Symmetry of Fe-N4 Site for Boosting Oxygen Electroreduction
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|c 2024
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 01.08.2024
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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 Introducing asymmetric elements and breaking the geometric symmetry of traditional metal-N4 site for boosting oxygen reduction reaction (ORR) are meaningful and challenging. Herein, the planar chlorination engineering of Fe-N4 site is first proposed for remarkably improving the ORR activity. The Fe-N4/CNCl catalyst with broken symmetry exhibits a half-wave potential (E1/2) of 0.917 V versus RHE, 49 and 72 mV higher than those of traditional Fe-N4/CN and commercial 20 wt% Pt/C catalysts. The Fe-N4/CNCl catalyst also has excellent stability for 25 000 cycles and good methanol tolerance ability. For Zn-air battery test, the Fe-N4/CNCl catalyst has the maximum power density of 228 mW cm-2 and outstanding stability during 150 h charge-discharge test, as the promising substitute of Pt-based catalysts in energy storage and conversion devices. The density functional theory calculation demonstrates that the adjacent C─Cl bond effectively breaks the symmetry of Fe-N4 site, downward shifts the d-band center of Fe, facilitates the reduction and release of OH*, and remarkably lowers the energy barrier of rate-determining step. This work reveals the enormous potential of planar chlorination engineering for boosting the ORR activity of traditional metal-N4 site by thoroughly breaking their geometric symmetry
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|a Journal Article
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|a Fe‐N4 site with broken geometric symmetry
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|a Zn‐air battery
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| 650 |
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|a oxygen reduction reaction
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| 650 |
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|a planar chlorination engineering
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|a Yang, Rongyan
|e verfasserin
|4 aut
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| 700 |
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|a Wang, Ziyi
|e verfasserin
|4 aut
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| 700 |
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|a Zhang, Jijie
|e verfasserin
|4 aut
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| 700 |
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|a Bu, Xian-He
|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), 31 vom: 01. Aug., Seite e2404692
|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:31
|g day:01
|g month:08
|g pages:e2404692
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|u http://dx.doi.org/10.1002/adma.202404692
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