Rational construction of hierarchical Ni(OH)(2)-NiS in-plane edge hybrid nanosheet structures on the carbon cloth as a robust catalyst for electro-oxidation of urea
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F21%3A43962524" target="_blank" >RIV/49777513:23640/21:43962524 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.jallcom.2021.159486" target="_blank" >https://doi.org/10.1016/j.jallcom.2021.159486</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jallcom.2021.159486" target="_blank" >10.1016/j.jallcom.2021.159486</a>
Alternative languages
Result language
angličtina
Original language name
Rational construction of hierarchical Ni(OH)(2)-NiS in-plane edge hybrid nanosheet structures on the carbon cloth as a robust catalyst for electro-oxidation of urea
Original language description
Urea, a non-toxic nitrogenous small molecule, is used for electrochemical energy storage and conversion. However, slow kinetics of urea electro-oxidation reaction and finding an optimal catalyst continues to be major challenges. In this study, we report the preparation of hierarchical Ni(OH)2–NiS in-plane edge hybrid nanosheets on the carbon cloth surface (Ni(OH)2–NiS-CC) as a flexible catalytic electrode by hydrothermal and electroplating processes. The Ni(OH)2–NiS-CC substrate is characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and electro-chemical methods. The developed hierarchical Ni(OH)2–NiS-CC nanosheets electrode shows an enhanced electrocatalytic performance (low-onset oxidation potential, rapid reaction kinetics, and higher mass activity) towards urea electro-oxidation than NiS-CC in an alkaline solution. Counting the benefits including superior catalytic activity, conductivity and available more active sites, the hierarchical Ni(OH)2–NiS-CC in-plane edge hybrid nanosheets electrode displays urea electro-oxidation with a catalytic current of 87.5 mA at 0.8 V vs. Ag/AgCl, which denotes the remarkable electrocatalytic activity as compared with other Ni based catalysts. This simple and useful electrode fabrication method enables a new route to acquire ultra-fine heterostructured substrates for wide variety of potential applications including direct-urea-fuel-cells (DUFC) and urea-assisted water splitting.
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
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
JOURNAL OF ALLOYS AND COMPOUNDS
ISSN
0925-8388
e-ISSN
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Volume of the periodical
87
Issue of the periodical within the volume
JUL 25 2021
Country of publishing house
CH - SWITZERLAND
Number of pages
11
Pages from-to
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UT code for WoS article
000641325500001
EID of the result in the Scopus database
2-s2.0-85102879252