Role of amorphous engineering and cerium doping in NiFe oxyhydroxide for electrocatalytic water oxidation
Copyright © 2024 Elsevier Inc. All rights reserved..
Amorphous engineering and atomistic doping provide an effective way to improve the catalytic activity in the oxygen evolution reaction (OER) of transition metal layered double hydroxides. Herein, Cerium (Ce) was introduced into NiFe-based oxyhydroxide using a modified aqueous sol-gel procedure. Ce as an electron acceptor promoted the coupling oxidation of Ni2+/3+ in NiFe oxyhydroxide, and the activated oxyhydroxide showed excellent catalytic activity in OER. The amorphous NiFeCe oxyhydroxide electrocatalyst demonstrated great modified OER catalytic activity under alkaline conditions and excellent cyclic stability, with an overpotential of only 284 mV at 50 mA cm-2, which was significantly better than amorphous NiFe oxyhydroxide and crystalline NiFeCe oxyhydroxide. Theoretical investigations further indicated that the overpotential of the rate-determining step (*OOH deprotonation) decreased from 0.66 to 0.41 V after Ce doping and strong electron interaction, effectively reducing the dependence of proton activity in the solution of OER, and optimizing the adsorption/desorption process of related oxygen-containing species in the reaction. This work also provides a good reference for optimizing OER activity by using rare-earth-metal induced electronic regulation strategies.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:663 |
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| Enthalten in: |
Journal of colloid and interface science - 663(2024) vom: 19. März, Seite 280-286 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Bai, Jirong [VerfasserIn] |
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| Links: |
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| Themen: |
Amorphous engineering |
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| Anmerkungen: |
Date Revised 20.03.2024 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1016/j.jcis.2024.02.093 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM368928012 |
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| 500 | |a Date Revised 20.03.2024 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a Copyright © 2024 Elsevier Inc. All rights reserved. | ||
| 520 | |a Amorphous engineering and atomistic doping provide an effective way to improve the catalytic activity in the oxygen evolution reaction (OER) of transition metal layered double hydroxides. Herein, Cerium (Ce) was introduced into NiFe-based oxyhydroxide using a modified aqueous sol-gel procedure. Ce as an electron acceptor promoted the coupling oxidation of Ni2+/3+ in NiFe oxyhydroxide, and the activated oxyhydroxide showed excellent catalytic activity in OER. The amorphous NiFeCe oxyhydroxide electrocatalyst demonstrated great modified OER catalytic activity under alkaline conditions and excellent cyclic stability, with an overpotential of only 284 mV at 50 mA cm-2, which was significantly better than amorphous NiFe oxyhydroxide and crystalline NiFeCe oxyhydroxide. Theoretical investigations further indicated that the overpotential of the rate-determining step (*OOH deprotonation) decreased from 0.66 to 0.41 V after Ce doping and strong electron interaction, effectively reducing the dependence of proton activity in the solution of OER, and optimizing the adsorption/desorption process of related oxygen-containing species in the reaction. This work also provides a good reference for optimizing OER activity by using rare-earth-metal induced electronic regulation strategies | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Amorphous engineering | |
| 650 | 4 | |a Ce doping | |
| 650 | 4 | |a NiFe oxyhydroxide | |
| 650 | 4 | |a Oxygen evolution reaction | |
| 700 | 1 | |a Chen, Changfan |e verfasserin |4 aut | |
| 700 | 1 | |a Lian, Yuebin |e verfasserin |4 aut | |
| 700 | 1 | |a Deng, Yaoyao |e verfasserin |4 aut | |
| 700 | 1 | |a Xiang, Mei |e verfasserin |4 aut | |
| 700 | 1 | |a Zhou, Quanfa |e verfasserin |4 aut | |
| 700 | 1 | |a Tang, Yawen |e verfasserin |4 aut | |
| 700 | 1 | |a Su, Yaqiong |e verfasserin |4 aut | |
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