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Journal of Sol-Gel Science and Technology
Erschienen in: Journal of Sol-Gel Science and Technology 1/2024

27.02.2024 | Original Paper

Ni(OH)2/Co(OH)2 nanocomposite as electrocatalyst towards water oxidation process

verfasst von: P. Mohana, S. Swathi, R. Yuvakkumar, G. Ravi, S. Arun Metha

Erschienen in: Journal of Sol-Gel Science and Technology | Ausgabe 1/2024

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Abstract

Hierarchical Ni(OH)2/Co(OH)2 nanocomposite were produced by the use of hydrothermal technique for sustainable alternative energy production and employed as competent electrocatalyst for oxygen evolution reaction (OER). Herein, prepared electrocatalyst achieved 3D urchin sphere like morphology at the scale range of 1 μm and 200 nm. Electrochemical studies of Ni(OH)2/Co(OH)2 nanocomposite was analyzed by 3 electrode using aqueous alkaline solution of 1 M KOH. Prepared Ni(OH)2/Co(OH)2 nanocomposite electrode attained 264.5 cm2 electrochemical surface area obtained from high double layer capacitance (Cdl) value of 10.58 mF/cm2 and it required very low 360 mV at 50 mA/cm2 current density with 240 mV/dec Tafel value which is distinctly favorable for the effective electrocatalytic activity. The low solution resistance (Rs) value of 0.54 Ω showed the excellent conductivity and charge transfer competence. The prepared product displays good stability and the consistency up to the long duration of 16 h at 10 mA/cm2. Furthermore, morphological stability of prepared nanocomposite electrode was also confirmed from the post SEM analysis which concluded the significant impact on structural transformation of nanocomposite after the electrochemical analysis. Present work revealed better perceptive of benefits and defects of alternative low cost Ni(OH)2/Co(OH)2 nanocomposite electrocatalyst for water oxidation process. Hence, synthesized Ni(OH)2/Co(OH)2 explored good electrocatalyst for OER and open new way to design alternative low cost electrocatalytic materials for sustainable energy generation.

Graphical abstract

Vorheriger Artikel A facile synthesis and characterization of spinel Zinc-Chromite (ZnCr2O4) nanoparticles: their photocatalytic, antibacterial, and anticancer activities
Nächster Artikel Novel La1-xMxCo0. 5Ni0. 5O3 perovskite with low CO selectivity for enriched hydrogen production from methanol reforming for HT-PEMFCs application

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Metadaten
Titel
Ni(OH)2/Co(OH)2 nanocomposite as electrocatalyst towards water oxidation process
verfasst von
P. Mohana
S. Swathi
R. Yuvakkumar
G. Ravi
S. Arun Metha
Publikationsdatum
27.02.2024
Verlag
Springer US
Erschienen in
Journal of Sol-Gel Science and Technology / Ausgabe 1/2024
Print ISSN: 0928-0707
Elektronische ISSN: 1573-4846
DOI
https://doi.org/10.1007/s10971-024-06341-9

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