Highly Active CoNi-CoN3 Composite Sites Synergistically Accelerate Oxygen Electrode Reactions in Rechargeable Zinc-Air Batteries
© 2024 The Authors. Small published by Wiley-VCH GmbH..
Reaching rapid reaction kinetics of oxygen reduction (ORR) and oxygen evolution reactions (OER) is critical for realizing efficient rechargeable zinc-air batteries (ZABs). Herein, a novel CoNi-CoN3 composite site containing CoNi alloyed nanoparticles and CoN3 moieties is first constructed in N-doped carbon nanosheet matrix (CoNi-CoN3 /C). Benefiting from the high electroactivity of CoNi-CoN3 composite sites and large surface area, CoNi-CoN3 /C shows a superior half-wave potential (0.88 V versus RHE) for ORR and a small overpotential (360 mV) for OER at 10 mA cm-2 . Theoretical calculations have demonstrated that the introduction of CoNi alloys has modulated the electronic distributions near the CoN3 moiety, inducing the d-band center of CoNi-CoN3 composite site to shift down, thus stabilizing the valence state of Co active sites and balancing the adsorption of OER/ORR intermediates. Accordingly, the reaction energy trends exhibit optimized overpotentials for OER/ORR, leading to superior battery performances. For aqueous and flexible quasi-solid-state rechargeable ZABs with CoNi-CoN3 /C as catalyst, a large power density (250 mW cm-2 ) and high specific capacity (804 mAh g-1 ) are achieved. The in-depth understanding of the electroactivity enhancement mechanism of interactive metal nanoparticles and metal coordinated with nitrogen (MNx ) moieties is crucial for designing novel high-performance metal/nitrogen-doped carbon (M─N─C) catalysts.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - year:2024 |
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| Enthalten in: |
Small (Weinheim an der Bergstrasse, Germany) - (2024) vom: 03. März, Seite e2401506 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Li, Nan [VerfasserIn] |
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| Links: |
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| Themen: |
CoNi-CoN3 composite sites |
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| Anmerkungen: |
Date Revised 03.03.2024 published: Print-Electronic Citation Status Publisher |
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| doi: |
10.1002/smll.202401506 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM369217942 |
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| 245 | 1 | 0 | |a Highly Active CoNi-CoN3 Composite Sites Synergistically Accelerate Oxygen Electrode Reactions in Rechargeable Zinc-Air Batteries |
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| 520 | |a © 2024 The Authors. Small published by Wiley-VCH GmbH. | ||
| 520 | |a Reaching rapid reaction kinetics of oxygen reduction (ORR) and oxygen evolution reactions (OER) is critical for realizing efficient rechargeable zinc-air batteries (ZABs). Herein, a novel CoNi-CoN3 composite site containing CoNi alloyed nanoparticles and CoN3 moieties is first constructed in N-doped carbon nanosheet matrix (CoNi-CoN3 /C). Benefiting from the high electroactivity of CoNi-CoN3 composite sites and large surface area, CoNi-CoN3 /C shows a superior half-wave potential (0.88 V versus RHE) for ORR and a small overpotential (360 mV) for OER at 10 mA cm-2 . Theoretical calculations have demonstrated that the introduction of CoNi alloys has modulated the electronic distributions near the CoN3 moiety, inducing the d-band center of CoNi-CoN3 composite site to shift down, thus stabilizing the valence state of Co active sites and balancing the adsorption of OER/ORR intermediates. Accordingly, the reaction energy trends exhibit optimized overpotentials for OER/ORR, leading to superior battery performances. For aqueous and flexible quasi-solid-state rechargeable ZABs with CoNi-CoN3 /C as catalyst, a large power density (250 mW cm-2 ) and high specific capacity (804 mAh g-1 ) are achieved. The in-depth understanding of the electroactivity enhancement mechanism of interactive metal nanoparticles and metal coordinated with nitrogen (MNx ) moieties is crucial for designing novel high-performance metal/nitrogen-doped carbon (M─N─C) catalysts | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a CoNi-CoN3 composite sites | |
| 650 | 4 | |a oxygen evolution reaction | |
| 650 | 4 | |a oxygen reduction reaction | |
| 650 | 4 | |a synergistic electrocatalytic activity | |
| 650 | 4 | |a zinc-air batteries | |
| 700 | 1 | |a Sun, Mingzi |e verfasserin |4 aut | |
| 700 | 1 | |a Xiao, Jiaxiang |e verfasserin |4 aut | |
| 700 | 1 | |a Ma, Xiaoyu |e verfasserin |4 aut | |
| 700 | 1 | |a Huang, Lijuan |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Hongyu |e verfasserin |4 aut | |
| 700 | 1 | |a Xie, Chao |e verfasserin |4 aut | |
| 700 | 1 | |a Yang, Yahui |e verfasserin |4 aut | |
| 700 | 1 | |a Jiang, Hao |e verfasserin |4 aut | |
| 700 | 1 | |a Huang, Bolong |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Wenjun |e verfasserin |4 aut | |
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