Co, Fe-ions intercalated Ni(OH)(2) network-like nanosheet arrays as highly efficient non-noble 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%3A43965497" target="_blank" >RIV/49777513:23640/21:43965497 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.ijhydene.2021.08.022" target="_blank" >https://doi.org/10.1016/j.ijhydene.2021.08.022</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijhydene.2021.08.022" target="_blank" >10.1016/j.ijhydene.2021.08.022</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Co, Fe-ions intercalated Ni(OH)(2) network-like nanosheet arrays as highly efficient non-noble catalyst for electro-oxidation of urea

Popis výsledku v původním jazyce

Developing a highly active, low-cost, and durable nanostructured catalytic material is of significant interest in fuel cell applications owing to its efficient energy conversion, ease of preparation and operation, and reduced emission of pollutants. In this work, various ratio (0.01, 0.03, and 0.05 mmol) of cobalt (Co), and iron (Fe) doped nickel hydroxide (Ni(OH)2) nanosheet arrays were grown on Ni foam surface (CoeNi(OH)2 and FeeNi(OH)2) via a simple one-step process. The CoeNi(OH)2 and FeeNi(OH)2 nanosheet array on Ni foam electrodes were explored as potential candidate towards electro-oxidation of urea. Notably, 0.03 mmol Co doped Ni(OH)2/Ni foam electrode displayed lowest-onset oxidation potential (0.21 V) and enhanced electro-oxidation of urea (59.7 mA) owing to its large amount of electrocatalytic active sites, densely assembled nanosheet array structures with porous surfaces, and electronic diffusion channels, which might promote interface electrochemical reaction. In addition, synergistic effect between Co metal with Ni(OH)2 has also promotes enhanced electro-oxidation of urea in contrast to FeeNi(OH)2 nanosheet array, Ni(OH)2, and Ni foam electrodes. Chronoamperometric i-t curve of CoeNi(OH)2/Ni foam electrode obviously exhibited higher catalytic current, highly stable and durable properties in contrast to FeeNi(OH)2 nanosheet arrays. As-fabricated CoeNi(OH)2/Ni foam can be explored as a new type of potential low-cost catalyst for electro-oxidation of urea, which reveals promising use in future fuel cell energy applications.

Název v anglickém jazyce

Co, Fe-ions intercalated Ni(OH)(2) network-like nanosheet arrays as highly efficient non-noble catalyst for electro-oxidation of urea

Popis výsledku anglicky

Developing a highly active, low-cost, and durable nanostructured catalytic material is of significant interest in fuel cell applications owing to its efficient energy conversion, ease of preparation and operation, and reduced emission of pollutants. In this work, various ratio (0.01, 0.03, and 0.05 mmol) of cobalt (Co), and iron (Fe) doped nickel hydroxide (Ni(OH)2) nanosheet arrays were grown on Ni foam surface (CoeNi(OH)2 and FeeNi(OH)2) via a simple one-step process. The CoeNi(OH)2 and FeeNi(OH)2 nanosheet array on Ni foam electrodes were explored as potential candidate towards electro-oxidation of urea. Notably, 0.03 mmol Co doped Ni(OH)2/Ni foam electrode displayed lowest-onset oxidation potential (0.21 V) and enhanced electro-oxidation of urea (59.7 mA) owing to its large amount of electrocatalytic active sites, densely assembled nanosheet array structures with porous surfaces, and electronic diffusion channels, which might promote interface electrochemical reaction. In addition, synergistic effect between Co metal with Ni(OH)2 has also promotes enhanced electro-oxidation of urea in contrast to FeeNi(OH)2 nanosheet array, Ni(OH)2, and Ni foam electrodes. Chronoamperometric i-t curve of CoeNi(OH)2/Ni foam electrode obviously exhibited higher catalytic current, highly stable and durable properties in contrast to FeeNi(OH)2 nanosheet arrays. As-fabricated CoeNi(OH)2/Ni foam can be explored as a new type of potential low-cost catalyst for electro-oxidation of urea, which reveals promising use in future fuel cell energy applications.

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

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

ISSN

0360-3199

e-ISSN

1879-3487

Svazek periodika

46

Číslo periodika v rámci svazku

69

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

34318-34332

Kód UT WoS článku

000701801500005

EID výsledku v databázi Scopus

2-s2.0-85113597828