The Electrochemical Performance of Co3O4 Electrodes with Platinum Nanoparticles for Chlorine Evolution

Guan-Ting Pan; Aleksandar N. Nikoloski

doi:10.3390/inorganics13110355

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The Electrochemical Performance of Co3O4 Electrodes with Platinum Nanoparticles for Chlorine Evolution

Journal article

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Peer reviewed

The Electrochemical Performance of Co3O4 Electrodes with Platinum Nanoparticles for Chlorine Evolution

Guan-Ting Pan and Aleksandar N. Nikoloski

Inorganics, Vol.13(11), 355

2025

DOI: https://doi.org/10.3390/inorganics13110355

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Abstract

crystalline

electrode

cobalt

electrochemical deposition technique

electronic characterization

electrical properties

Different morphologies of cobalt oxide (Co3O4) electrodes were prepared through the electrochemical deposition technique with various electrodeposition times from 10 min to 50 min. Platinum (Pt) nanoparticles were deposited on the Co3O4 electrodes through sputter coating. The crystallographic, microstructural, surface functional, textural–structural, and electric properties of the Co3O4 electrodes were investigated. X-ray diffraction analysis identified a pure cubic Co3O4 crystal structure in the samples. In the electrodeposition process, the microstructure of the electrodes varied from hierarchical 3D flower-like to 2D hexagonal porous nanoplates due to an increase in oxygen vacancies. The carrier densities of all samples were between 5.77 × 1014 cm−3 and 8.77 × 1014 cm−3. The flat band potentials of all samples were between −5.91 V and −6.21 V vs. an absolute electron potential, and the potential values for electrodes became more positive as the oxygen vacancy concentration in the film structure increased. The 2D hexagonal porous nanoplate Pt/Co3O4 electrodes offered the highest oxygen vacancies and thus the maximum current density of 102.66 mA/cm2, with an external potential set at 1.5 V vs. an Ag/AgCl reference electrode.

Details

Title: The Electrochemical Performance of Co3O4 Electrodes with Platinum Nanoparticles for Chlorine Evolution
Authors/Creators: Guan-Ting Pan
Aleksandar N. Nikoloski - Murdoch University, Centre for Water, Energy and Waste
Publication Details: Inorganics, Vol.13(11), 355
Publisher: MDPI
Number of pages: 19
Identifiers: 991005831945507891
Murdoch Affiliation: Centre for Water, Energy and Waste
Language: English
Resource Type: Journal article

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Citation topics: 2 Chemistry; 2.210 Corrosion & Deposition Chemistry; 2.210.2222 Lead-Acid Battery
Web Of Science research areas: Chemistry, Inorganic & Nuclear
ESI research areas: Chemistry