Strong electronic coupling between single Ru atoms and cobalt-vanadium layered double hydroxide harness efficient water splitting
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F23%3A10250636" target="_blank" >RIV/61989100:27710/23:10250636 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S1385894722046307" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1385894722046307</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cej.2022.139151" target="_blank" >10.1016/j.cej.2022.139151</a>
Alternative languages
Result language
angličtina
Original language name
Strong electronic coupling between single Ru atoms and cobalt-vanadium layered double hydroxide harness efficient water splitting
Original language description
Atomic coordination modulation and electronic structure engineering are appealing routes to develop versatile electrocatalysts targeting high-performance water electrolysis. Herein, atomically dispersed Ru sites are successfully anchored on the surface of CoV layered double hydroxide (LDH), affording a vertically aligned and interconnected nanosheet array architecture. Benefitting from the strong electronic coupling, fast charge transfer capability and well-defined morphology of as-prepared catalyst, ultralow overpotentials for hydrogen evolution reaction (HER, eta 10 = 28 mV) and oxygen evolution reaction (OER, eta 25 = 263 mV) are required. The two-electrode configuration cell only requires a cell voltage of 1.52 V to reach 10 mA cm-2, which is lower than that of commercialized Pt/C||RuO2 couple. Synchrotron X-ray absorption spectroscopy studies in combination with density functional theory calculations reveal that the strong electronic coupling between monatomic Ru with CoV LDH induces spatial charge redistribution and a distorted coordination environment around V atoms, thereby accelerating the hydrogen release for HER and reducing the rate-determining step (O* -> OOH*) free energy for OER.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20400 - Chemical engineering
Result continuities
Project
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Continuities
V - Vyzkumna aktivita podporovana z jinych verejnych zdroju
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Chemical engineering journal
ISSN
1385-8947
e-ISSN
1873-3212
Volume of the periodical
452
Issue of the periodical within the volume
15 January 2023
Country of publishing house
CH - SWITZERLAND
Number of pages
10
Pages from-to
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UT code for WoS article
000863245000002
EID of the result in the Scopus database
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