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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

JOURNAL OF ALLOYS AND COMPOUNDS

ISSN

0925-8388

e-ISSN

—

Svazek periodika

87

Číslo periodika v rámci svazku

JUL 25 2021

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

11

Strana od-do

—

Kód UT WoS článku

000641325500001

EID výsledku v databázi Scopus

2-s2.0-85102879252