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240530s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202405763
|2 doi
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|a pubmed24n1495.xml
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|a (DE-627)NLM372982085
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|a (NLM)38809945
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Hu, Chuan
|e verfasserin
|4 aut
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|a Inhibiting Demetalation of Fe─N─C via Mn Sites for Efficient Oxygen Reduction Reaction in Zinc-Air Batteries
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 08.08.2024
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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 Demetalation caused by the electrochemical dissolution of metallic Fe atoms is a major challenge for the practical application of Fe─N─C catalysts. Herein, an efficient single metallic Mn active site is constructed to improve the strength of the Fe─N bond, inhibiting the demetalation effect of Fe─N─C. Mn acts as an electron donor inducing more delocalized electrons to reduce the oxidation state of Fe by increasing the electron density, thereby enhancing the Fe─N bond and inhibiting the electrochemical dissolution of Fe. The oxygen reduction reaction pathway for the dissociation of Fe─Mn dual sites can overcome the high energy barriers to direct O─O bond dissociation and modulate the electronic states of Fe─N4 sites. The resulting FeMn─N─C exhibits excellent ORR activity with a high half-wave potential of 0.92 V in alkaline electrolytes. FeMn─N─C as a cathode catalyst for Zn-air batteries has a cycle stability of 700 h at 25 °C and a long cycle stability of more than 210 h under extremely cold conditions at -40 °C. These findings contribute to the development of efficient and stable metal-nitrogen-carbon catalysts for various energy devices
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|a Journal Article
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|a Fe─N─C
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4 |
|a Zn‐air batteries
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4 |
|a demetalation effect
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| 650 |
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|a dual atomic sites
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| 650 |
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|a oxygen reduction reaction
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| 700 |
1 |
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|a Xing, Gengyu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Han, Wentao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hao, Yixin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Chenchen
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Ying
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kuo, Chun-Han
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chen, Han-Yi
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hu, Feng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Linlin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Peng, Shengjie
|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 36(2024), 32 vom: 01. Aug., Seite e2405763
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
1 |
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|g volume:36
|g year:2024
|g number:32
|g day:01
|g month:08
|g pages:e2405763
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|u http://dx.doi.org/10.1002/adma.202405763
|3 Volltext
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