Elevating Supercapacitor Performance of Co3O4-g-C3N4 Nanocomposites Fabricated via the Hydrothermal Method

The hydrothermal method has been utilized to synthesize graphitic carbon nitride (g-C3N4) polymers and cobalt oxide composites effectively. The weight percentage of g-C3N4 nanoparticles influenced the electrochemical performance of the Co3O4-g-C3N4 composite. In an aqueous electrolyte, the Co3O4-g-C...

Full description

Saved in:
Bibliographic Details
Published in:Micromachines (Basel) 2024-03, Vol.15 (3), p.414
Main Authors: Yewale, Manesh A., Kumar, Vineet, Teli, Aviraj M., Beknalkar, Sonali A., Nakate, Umesh T., Shin, Dong-Kil
Format: Article
Language:English
Subjects:
Activated carbon
Alternative energy sources
Aqueous electrolytes
Asymmetry
Carbon nitride
Co3O4 nanoparticles
Cobalt
Cobalt oxides
Composite materials
Electrochemical analysis
Electrodes
Electrolytes
Electrons
Energy resources
Energy storage
graphic carbon nitride (g-C3N4)
Metal oxides
Nanocomposites
Nanoparticles
Nitrogen
Polyvinyl alcohol
Potassium hydroxides
Renewable resources
Spectrum analysis
Storage capacity
supercapacitor
Supercapacitors
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The hydrothermal method has been utilized to synthesize graphitic carbon nitride (g-C3N4) polymers and cobalt oxide composites effectively. The weight percentage of g-C3N4 nanoparticles influenced the electrochemical performance of the Co3O4-g-C3N4 composite. In an aqueous electrolyte, the Co3O4-g-C3N4 composite electrode, produced with 150 mg of g-C3N4 nanoparticles, revealed remarkable electrochemical performance. With an increase in the weight percentage of g-C3N4 nanoparticles, the capacitive contribution of the Co3O4-g-C3N4 composite electrode increased. The Co3O4-g-C3N4-150 mg composite electrode shows a specific capacitance of 198 F/g. The optimized electrode, activated carbon, and polyvinyl alcohol gel with potassium hydroxide were used to develop an asymmetric supercapacitor. At a current density of 5 mA/cm2, the asymmetric supercapacitor demonstrated exceptional energy storage capacity with remarkable energy density and power density. The device retained great capacity over 6k galvanostatic charge–discharge (GCD) cycles, with no rise in series resistance following cyclic stability. The columbic efficiency of the asymmetric supercapacitor was likewise high.
ISSN:2072-666X
2072-666X
DOI:10.3390/mi15030414