Regulating Hydrogen/Oxygen Species Adsorption via Built-in Electric Field -Driven Electron Transfer Behavior at the Heterointerface for Efficient Water Splitting
© 2024 Wiley‐VCH GmbH..
Alkaline water electrolysis (AWE) plays a crucial role in the realization of a hydrogen economy. The design and development of efficient and stable bifunctional catalysts for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) are pivotal to achieving high-efficiency AWE. Herein, WC1-x/Mo2C nanoparticle-embedded carbon nanofiber (WC1-x/Mo2CCNF) with abundant interfaces is successfully designed and synthesized. Benefiting from the electron transfer behavior from Mo2C to WC1-x, the electrocatalysts of WC1-x/Mo2C@CNF exhibit superior HER and OER performance. Furthermore, when employed as anode and cathode in membrane electrode assembly devices, the WC1-x/Mo2C@CNF catalyst exhibits enhanced catalytic activity and remarkable stability for 100 hours at a high current density of 200 mA cm-2 towards overall water splitting. The experimental characterizations and theoretical simulation reveal that modulation of the d-band center for WC1-x/Mo2C@CNF, achieved through the asymmetric charge distribution resulting from the built-in electric field induced by work function, enables optimization of adsorption strength for hydrogen/oxygen intermediates, thereby promoting the catalytic kinetics for overall water splitting. This work provides promising strategies for designing highly active catalysts in energy conversion fields.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:63 |
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| Enthalten in: |
Angewandte Chemie (International ed. in English) - 63(2024), 16 vom: 15. Apr., Seite e202400888 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Zhang, Wenjie [VerfasserIn] |
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| Links: |
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| Themen: |
Built-in electric field |
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| Anmerkungen: |
Date Revised 09.04.2024 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1002/anie.202400888 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM369090624 |
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| 520 | |a © 2024 Wiley‐VCH GmbH. | ||
| 520 | |a Alkaline water electrolysis (AWE) plays a crucial role in the realization of a hydrogen economy. The design and development of efficient and stable bifunctional catalysts for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) are pivotal to achieving high-efficiency AWE. Herein, WC1-x/Mo2C nanoparticle-embedded carbon nanofiber (WC1-x/Mo2CCNF) with abundant interfaces is successfully designed and synthesized. Benefiting from the electron transfer behavior from Mo2C to WC1-x, the electrocatalysts of WC1-x/Mo2C@CNF exhibit superior HER and OER performance. Furthermore, when employed as anode and cathode in membrane electrode assembly devices, the WC1-x/Mo2C@CNF catalyst exhibits enhanced catalytic activity and remarkable stability for 100 hours at a high current density of 200 mA cm-2 towards overall water splitting. The experimental characterizations and theoretical simulation reveal that modulation of the d-band center for WC1-x/Mo2C@CNF, achieved through the asymmetric charge distribution resulting from the built-in electric field induced by work function, enables optimization of adsorption strength for hydrogen/oxygen intermediates, thereby promoting the catalytic kinetics for overall water splitting. This work provides promising strategies for designing highly active catalysts in energy conversion fields | ||
| 650 | 4 | |a Journal Article | |
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| 650 | 4 | |a built-in electric field | |
| 650 | 4 | |a d band center | |
| 650 | 4 | |a overall water splitting | |
| 650 | 4 | |a work function | |
| 700 | 1 | |a Yang, Lei |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Zhi |e verfasserin |4 aut | |
| 700 | 1 | |a Nie, Guangzhi |e verfasserin |4 aut | |
| 700 | 1 | |a Cao, Xuejie |e verfasserin |4 aut | |
| 700 | 1 | |a Fang, Zizheng |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Xiaojun |e verfasserin |4 aut | |
| 700 | 1 | |a Ramakrishna, Seeram |e verfasserin |4 aut | |
| 700 | 1 | |a Long, Yunze |e verfasserin |4 aut | |
| 700 | 1 | |a Jiao, Lifang |e verfasserin |4 aut | |
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