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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

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

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

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

Name of the periodical

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

ISSN

0360-3199

e-ISSN

1879-3487

Volume of the periodical

46

Issue of the periodical within the volume

69

Country of publishing house

GB - UNITED KINGDOM

Number of pages

15

Pages from-to

34318-34332

UT code for WoS article

000701801500005

EID of the result in the Scopus database

2-s2.0-85113597828