Journal
CERAMICS INTERNATIONAL
Volume 47, Issue 24, Pages 34732-34739Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2021.09.012
Keywords
Copper oxide; Electrochemical energy storage devices; Electrochemical supercapacitors; Aqueous alkaline batteries; Electrochemical deposition
Categories
Funding
- Universiti Teknologi PETRONAS [0153AA-E43]
- Sunway University [GRTIN-IRG59-2021, STR-IRNGS-SET-GAMRG-01-2021]
- UMP [RDU 203301]
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The study successfully synthesized CuO hierarchical nanospikes using a template-assisted electrodeposition technique, which showed improved charge transport compared to CuO nanotubes in a three-electrode system. The cost-effective and promising performance of CuO nanospikes as electrodes in energy storage devices highlights their future potential in the field.
Morphological modification in materials aids multi-channel electron access sites for easier electrolyte ion access for many electrochemical devices including energy storage devices. Controlled synthesis of such multichannel morphologies of metal oxides offers significant challenges. Herein, we report a template-assisted electrodeposition technique for the synthesis of Cu nanowires, which are transformed into either CuO nanotubes by controlled annealing or CuO hierarchical nanospikes using a simple hydroxyl ion impregnation technique and subsequent annealing. These materials are tested as electrodes in charge storage systems in 6 M KOH electrolyte in a three-electrode system; both electrodes have shown battery-type charge storage behaviour. Despite the chemical similarity between the two materials, the CuO nanospikes electrodes showed improved charge transport between electrode-electrolyte interface compared to the CuO nanotubes. With the cost-effectiveness, easy availability, and multi-channel morphology of CuO nanospikes along with the promising performance of the electrode in a three-electrode system, the present research offers future potential in developing low cost and high performing energy storage devices.
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