Enhancing the Electrochemical Activity of 2D Materials Edges through Oriented Electric Fields
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F24%3A00588379" target="_blank" >RIV/61388955:_____/24:00588379 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0355280" target="_blank" >https://hdl.handle.net/11104/0355280</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsnano.4c06341" target="_blank" >10.1021/acsnano.4c06341</a>
Alternative languages
Result language
angličtina
Original language name
Enhancing the Electrochemical Activity of 2D Materials Edges through Oriented Electric Fields
Original language description
The edges of 2D materials have emerged as promising electrochemical catalyst systems, yet their performance still lags behind that of noble metals. Here, we demonstrate the potential of oriented electric fields (OEFs) to enhance the electrochemical activity of 2D materials edges. By atomically engineering the edge of a fluorographene/graphene/MoS2 heterojunction nanoribbon, strong and localized OEFs were realized as confirmed by simulations and spatially resolved spectroscopy. The observed fringing OEF results in an enhancement of the heterogeneous charge transfer rate between the edge and the electrolyte by 2 orders of magnitude according to impedance spectroscopy. Ab initio calculations indicate a field-induced decrease in the reactant adsorption energy as the origin of this improvement. We apply the OEF-enhanced edge reactivity to hydrogen evolution reactions (HER) and observe a significantly enhanced electrochemical performance, as evidenced by a 30% decrease in Tafel slope and a 3-fold enhanced turnover frequency. Our findings demonstrate the potential of OEFs for tailoring the catalytic properties of 2D material edges toward future complex reactions.
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
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ACS Nano
ISSN
1936-0851
e-ISSN
1936-086X
Volume of the periodical
18
Issue of the periodical within the volume
30
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
19828-19835
UT code for WoS article
001270060100001
EID of the result in the Scopus database
2-s2.0-85198909477