Investigating the Electrochemical Performance of Nickel Oxide/Functionalized-Carbon Nanotube (NiO/f-CNT) Nanocomposite Synthesized via Direct Co-precipitation for Supercapacitor Applications

In recent years, carbon nanotube (CNT) and metal oxide-based supercapacitor (SC) electrodes have shown remarkable enhancements in their electrochemical properties. In this study, we synthesized a NiO and NiO/3%f-CNT nanocomposite through the direct chemical co-precipitation method. The structural an...

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Bibliographic Details
Published in:Brazilian journal of physics 2024-02, Vol.54 (1), Article 10
Main Authors: Ragupathi, Hariventhan, M, Antony Arockiaraj, Choe, Youngson
Format: Article
Language:English
Subjects:
Aqueous electrolytes
Carbon nanotubes
Chemical synthesis
Condensed Matter
Coprecipitation
Electrical impedance
Electrochemical analysis
Electrode materials
Electrodes
Fourier transforms
Infrared spectroscopy
Metal oxides
Nanocomposites
Nickel oxides
Performance evaluation
Physics
Physics and Astronomy
Supercapacitors
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Summary:In recent years, carbon nanotube (CNT) and metal oxide-based supercapacitor (SC) electrodes have shown remarkable enhancements in their electrochemical properties. In this study, we synthesized a NiO and NiO/3%f-CNT nanocomposite through the direct chemical co-precipitation method. The structural and morphological characteristics of the composite were analyzed using X-ray diffraction, scanning electron microscope, transmission electron microscope, Fourier transform infrared spectroscope, and energy-dispersive X-ray spectroscope. Additionally, we evaluated the electrochemical performance through cyclic voltammetry, galvanostatic charge–discharge, and electrical impedance spectroscopy. The NiO/3%f-CNT composite electrode revealed a specific capacitance of 390.74 F/g at 5 mV Na 2 SO 4 aqueous electrolyte. Furthermore, even after 5000 cycles, the NiO/3%f-CNT composite electrode displayed exceptional cyclic stability of 93.5% at 1 A/g, indicating its potential for long-term usage. Overall, our results demonstrated that the chemical co-precipitation synthesized nanocomposite possesses superior electrochemical properties, making it a promising candidate for supercapacitor electrode material.
ISSN:0103-9733
1678-4448
DOI:10.1007/s13538-023-01387-6