Highly-Exposed Co-CoO Derived from Nanosized ZIF-67 on N-Doped Porous Carbon Foam as Efficient Electrocatalyst for Zinc-Air Battery
© 2023 Wiley-VCH GmbH..
Non-precious-metal based electrocatalysts with highly-exposed and well-dispersed active sites are crucially needed to achieve superior electrocatalytic performance for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) toward zinc-air battery (ZAB). Herein, Co-CoO heterostructures derived from nanosized ZIF-67 are densely-exposed and strongly-immobilized onto N-doped porous carbon foam (NPCF) through a self-sacrificial pyrolysis strategy. Benefited from the high exposure of Co-CoO heterostructures and the favorable mass and electron transfer ability of NPCF, the Co-CoO/NPCF electrocatalyst exhibits remarkable performance for both ORR (E1/2 = 0.843 V vs RHE) and OER (Ej = 10 mA cm-2 = 1.586 V vs RHE). Further application of Co-CoO/NPCF as the air-cathode in rechargeable ZAB achieves superior performance for liquid-state ZAB (214.1 mW cm-2 and 600 cycles) and flexible all-solid-state ZAB (93.1 mW cm-2 and 140 cycles). Results from DFT calculations demonstrate that the electronic metal-support interactions between Co-CoO and NPCF via abundant C-Nx sites is favorable for electronic structure modulation, accounting for the remarkable performance.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:19 |
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| Enthalten in: |
Small (Weinheim an der Bergstrasse, Germany) - 19(2023), 43 vom: 07. Okt., Seite e2302925 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Luo, Yixing [VerfasserIn] |
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| Links: |
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| Themen: |
Co-CoO heterostructures |
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| Anmerkungen: |
Date Revised 25.10.2023 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1002/smll.202302925 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM358574358 |
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| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a © 2023 Wiley-VCH GmbH. | ||
| 520 | |a Non-precious-metal based electrocatalysts with highly-exposed and well-dispersed active sites are crucially needed to achieve superior electrocatalytic performance for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) toward zinc-air battery (ZAB). Herein, Co-CoO heterostructures derived from nanosized ZIF-67 are densely-exposed and strongly-immobilized onto N-doped porous carbon foam (NPCF) through a self-sacrificial pyrolysis strategy. Benefited from the high exposure of Co-CoO heterostructures and the favorable mass and electron transfer ability of NPCF, the Co-CoO/NPCF electrocatalyst exhibits remarkable performance for both ORR (E1/2 = 0.843 V vs RHE) and OER (Ej = 10 mA cm-2 = 1.586 V vs RHE). Further application of Co-CoO/NPCF as the air-cathode in rechargeable ZAB achieves superior performance for liquid-state ZAB (214.1 mW cm-2 and 600 cycles) and flexible all-solid-state ZAB (93.1 mW cm-2 and 140 cycles). Results from DFT calculations demonstrate that the electronic metal-support interactions between Co-CoO and NPCF via abundant C-Nx sites is favorable for electronic structure modulation, accounting for the remarkable performance | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Co-CoO heterostructures | |
| 650 | 4 | |a N-doped porous carbon foam | |
| 650 | 4 | |a ZIF-67 | |
| 650 | 4 | |a oxygen electrocatalytic reactions | |
| 650 | 4 | |a zinc-air batteries | |
| 700 | 1 | |a Wen, Ming |e verfasserin |4 aut | |
| 700 | 1 | |a Zhou, Jian |e verfasserin |4 aut | |
| 700 | 1 | |a Wu, Qingsheng |e verfasserin |4 aut | |
| 700 | 1 | |a Wei, Guangfeng |e verfasserin |4 aut | |
| 700 | 1 | |a Fu, Yongqing |e verfasserin |4 aut | |
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