Abstract
Herein, we have introduced the electrode material made up of a composite of an electrochemical active organic molecule (i.e. methyl orange (MO)) and reduced graphene oxide (rGO) composite. This composite is found to be a potential material for supercapacitor application due to the sustainability, redox reversibility of organic molecules, and good conductivity of rGO. For fabricating symmetric solid-state cell (MO/rGO//PVA/H2SO4//MO/rGO), polyvinyl alcohol–sulphuric acid (PVA/H2SO4) aqueous gel polymer electrolyte (GPE) has been sandwiched between the two MO/rGO electrodes. It was found that a MO/rGO based symmetric cell interfaced with a PVA/H2SO4 gel electrolyte has a specific capacitance of 166.79 F g−1 and an energy density of 11.58 Wh kg−1 at a power density of 6.25 kW kg−1. Here, good specific capacitance is the result of a combination of both electric double-layer capacitor (EDLC) and pseudo-capacitive behaviour observed in a fabricated cell. The specific capacitance is stable after 2500 cycles of charge and discharge, with an initial fade of 32 %. This synthesized material and fabricated device found its potential to be used for the supercapacitor application.
Funding source: Institution of Eminence
Award Identifier / Grant number: IoE/2023-24/12/FRP
Acknowledgment
The authors express their sincere gratitude to the Vice-Chancellor of the University of Delhi. We are thankful to the University Science Instrumentation Centre (USIC), University of Delhi for the characterization facilities.
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Research ethics: Not applicable.
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Author contributions: Karsimran Singh: Methodology, Visualization, Investigation, Writing - original draft. Amarjeet Kaur: Supervision, Conceptualization, Investigation, Writing - review & editing.
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Competing interests: The authors declare no conflicts of interest regarding this article.
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Research funding: This work is supported by the Institution of Eminence, University of Delhi [Faculty Research Program Grant – /IoE/2023-24/12/FRP]. One of the authors (Karsimran Singh) is grateful to the Council of Scientific and Industrial Research for the NET-SRF fellowship.
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Data availability: Data will be made available on request.
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Articles in the same Issue
- Frontmatter
- Special Issue Articles
- An experimental evaluation of green surfactants to stabilize silica nanofluids in saline conditions and its application in CO2 absorption
- Indoor air quality control using lab scale air purifier tower
- Green ultrasound-assisted extraction and life cycle assessment of lutein from marigold flowers using biocompatible surfactants
- Numerical analysis of various shapes of lozenge pin-fins in microchannel heat sink
- Extraction of biodiesel from pomelo peel and investigation of its efficiency as a lubricant in water-based drilling fluid
- Methyl-orange/reduced graphene oxide composite as the electrode material for the solid-state supercapacitor
- Efficiency and environmental stability of TiO2 based solar cells for green electricity production
- Validating experimental data for attenuation coefficients of developed polymer composites in shielding applications through Monte Carlo simulation
- Experimental studies on renewable hydrogen production by steam reforming of glycerol over zirconia promoted on Ni/Al2O3 catalyst
Articles in the same Issue
- Frontmatter
- Special Issue Articles
- An experimental evaluation of green surfactants to stabilize silica nanofluids in saline conditions and its application in CO2 absorption
- Indoor air quality control using lab scale air purifier tower
- Green ultrasound-assisted extraction and life cycle assessment of lutein from marigold flowers using biocompatible surfactants
- Numerical analysis of various shapes of lozenge pin-fins in microchannel heat sink
- Extraction of biodiesel from pomelo peel and investigation of its efficiency as a lubricant in water-based drilling fluid
- Methyl-orange/reduced graphene oxide composite as the electrode material for the solid-state supercapacitor
- Efficiency and environmental stability of TiO2 based solar cells for green electricity production
- Validating experimental data for attenuation coefficients of developed polymer composites in shielding applications through Monte Carlo simulation
- Experimental studies on renewable hydrogen production by steam reforming of glycerol over zirconia promoted on Ni/Al2O3 catalyst