Highly surface electron-deficient Co9S8 nanoarrays for enhanced oxygen evolution
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F21%3A63526432" target="_blank" >RIV/70883521:28610/21:63526432 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S2468025720301102" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2468025720301102</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.gee.2020.07.010" target="_blank" >10.1016/j.gee.2020.07.010</a>
Alternative languages
Result language
angličtina
Original language name
Highly surface electron-deficient Co9S8 nanoarrays for enhanced oxygen evolution
Original language description
Tailoring valence electron delocalization of transition metal center is of importance to achieve highly-active electrocatalysts for oxygen evolution reaction (OER). Herein, we demonstrate a “poor sulfur” route to synthesize surface electron-deficient Co9S8 nanoarrays, where the binding energy (BE) of Co metal center is considerably higher than all reported Co9S8-based electrocatalysts. The resulting Co9S8 electrocatalysts only require the overpotentials (η) of 265 and 326 mV at 10 and 100 mA cm−2 with a low Tafel slope of 56 mV dec−1 and a 60 h-lasting stability in alkaline media. The OER kinetics are greatly expedited with a low reaction activation energy of 27.9 kJ mol−1 as well as abundant OOH∗ key intermediates (24%), thus exhibiting excellent catalytic performances. The surface electron-deficient engineering gives an available strategy to improve the catalytic activity of other advanced non-noble electrocatalysts.
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
20402 - Chemical process engineering
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Green Energy and Environment
ISSN
2096-2797
e-ISSN
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Volume of the periodical
61
Issue of the periodical within the volume
Neuveden
Country of publishing house
CN - CHINA
Number of pages
7
Pages from-to
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UT code for WoS article
000614144300014
EID of the result in the Scopus database
2-s2.0-85091895410