High entropy 2D metals sulfides: Fast synthesis, exfoliation and electrochemical activity in overall water splitting at alkaline pH
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43931897" target="_blank" >RIV/60461373:22310/25:43931897 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/25:10492276
Result on the web
<a href="https://doi.org/10.1016/j.apsusc.2024.161600" target="_blank" >https://doi.org/10.1016/j.apsusc.2024.161600</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.apsusc.2024.161600" target="_blank" >10.1016/j.apsusc.2024.161600</a>
Alternative languages
Result language
angličtina
Original language name
High entropy 2D metals sulfides: Fast synthesis, exfoliation and electrochemical activity in overall water splitting at alkaline pH
Original language description
Novel simple and efficient method for synthesis of 2D high entropy sulfides of iron group metals is described. The method utilizes inorganic salts as precursors and CS2 as a sulfurizing agent, which makes it possible to achieve high entropy composition through combination of freezing of the precursor solution, subsequent freeze-drying step, sulfurization, and exfoliation in liquid nitrogen. The created material was investigated as a catalyst for electrochemical water splitting at different pH. Measured overpotentials at 10 and 100 mA*cm−2 current densities for hydrogen evolution reaction (HER) were found to be 49 and 315 mV respectively, while for oxygen evolution reaction (OER) the overpotentials required for reaching 10 and 100 mA*cm−2 current densities were 370 and 591 mV respectively, both in 1 M KOH solution. The Tafel slopes for HER were found to be 235, 105, and 111 mV/dec in basic, neutral, and acidic conditions, respectively, while only 63 mV/dec for OER in basic conditions. The calculated values of the turnover frequency were 0.62 s−1 for HER and 0.10 s−1 for OER. We also confirmed the key role of high entropy in the catalytic activity of the material by excluding individual elements from the composition of the HES. © 2024 The Authors
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
20506 - Coating and films
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
APPLIED SURFACE SCIENCE
ISSN
0169-4332
e-ISSN
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Volume of the periodical
681
Issue of the periodical within the volume
FEB 1 2025
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
8
Pages from-to
"161600/1"-8
UT code for WoS article
001345242100001
EID of the result in the Scopus database
2-s2.0-85207013783