Coexisting Fe single atoms and nanoparticles on hierarchically porous carbon for high-efficiency oxygen reduction reaction and Zn-air batteries
Copyright © 2023 Elsevier Inc. All rights reserved..
Fe single-atom catalysts still suffer from unsatisfactory intrinsic activity and durability for oxygen reduction reaction (ORR). Herein, the coexisting Fe single atoms and nanoparticles on hierarchically porous carbon (denoted as Fe-FeN-C) are prepared via a Zn5(OH)6(CO3)2-assisted pyrolysis strategy. Theoretical calculation reveals that the Fe nanoparticles can optimize the electronic structures and d-band center of Fe active center, hence reducing the reaction energy barrier for enhancing intrinsic activity. The Zn5(OH)6(CO3)2 self-sacrificial template not only can promote the formation of Fe single atoms, but also contributes to the construction of microporous/mesoporous/macroporous structures. Therefore, the obtained Fe-FeN-C exhibits impressive ORR activity with a half-wave potential of 0.921 V, which far exceeds Pt/C. With Fe-FeN-C as the cathode catalyst, the assembled Zn-air batteries delivered a maximum power density of 206 mW cm-2 and a long-cycle life over 400 h.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 2023 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:653 |
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| Enthalten in: |
Journal of colloid and interface science - 653(2023), Pt A vom: 21. Jan., Seite 654-663 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Lu, Xiangyu [VerfasserIn] |
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| Links: |
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| Themen: |
Fe single atoms |
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| Anmerkungen: |
Date Revised 22.10.2023 published: Print-Electronic Citation Status Publisher |
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| doi: |
10.1016/j.jcis.2023.09.047 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM362376549 |
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| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status Publisher | ||
| 520 | |a Copyright © 2023 Elsevier Inc. All rights reserved. | ||
| 520 | |a Fe single-atom catalysts still suffer from unsatisfactory intrinsic activity and durability for oxygen reduction reaction (ORR). Herein, the coexisting Fe single atoms and nanoparticles on hierarchically porous carbon (denoted as Fe-FeN-C) are prepared via a Zn5(OH)6(CO3)2-assisted pyrolysis strategy. Theoretical calculation reveals that the Fe nanoparticles can optimize the electronic structures and d-band center of Fe active center, hence reducing the reaction energy barrier for enhancing intrinsic activity. The Zn5(OH)6(CO3)2 self-sacrificial template not only can promote the formation of Fe single atoms, but also contributes to the construction of microporous/mesoporous/macroporous structures. Therefore, the obtained Fe-FeN-C exhibits impressive ORR activity with a half-wave potential of 0.921 V, which far exceeds Pt/C. With Fe-FeN-C as the cathode catalyst, the assembled Zn-air batteries delivered a maximum power density of 206 mW cm-2 and a long-cycle life over 400 h | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Fe single atoms | |
| 650 | 4 | |a Hierarchically porous carbon | |
| 650 | 4 | |a Oxygen reduction reaction | |
| 650 | 4 | |a Single-atom catalysts | |
| 650 | 4 | |a Zn-air batteries | |
| 700 | 1 | |a Li, Yaqiang |e verfasserin |4 aut | |
| 700 | 1 | |a Dong, Derui |e verfasserin |4 aut | |
| 700 | 1 | |a Wan, Yongbiao |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Ruopeng |e verfasserin |4 aut | |
| 700 | 1 | |a Xiao, Lihui |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Dan |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Lilai |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Guangzhao |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Jinqiu |e verfasserin |4 aut | |
| 700 | 1 | |a An, Maozhong |e verfasserin |4 aut | |
| 700 | 1 | |a Yang, Peixia |e verfasserin |4 aut | |
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