SILAR-synthesized Co3O4/Bi2O3 on copper substrate nanocomposite electrode and asymmetric Co3O4/Bi2O3/CuO: AC solid-state device in supercapacitor

Hexagonal nanosheets like mesoporous nanostructures were developed on the flexible copper substrate as a binder-free thin-film electrode via a simple and cost-effective successive ionic layer adsorption and reaction (SILAR) technique. Among the numerous deposition techniques available for supercapac...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2024-03, Vol.35 (7), p.489, Article 489
Main Authors: Gaikwad, D. S., Bobade, R. G., Nakate, U. T., Rosaiah, P., Tighezza, Ammar M., Lokhande, B. J., Ambare, Revanappa C.
Format: Article
Language:English
Subjects:
Activated carbon
Asymmetry
Bismuth oxides
Bismuth trioxide
Characterization and Evaluation of Materials
Chemistry and Materials Science
Cobalt
Cobalt oxides
Contact angle
Copper
Copper oxides
Cycles
Electrodes
Materials Science
Nanocomposites
Optical and Electronic Materials
Solid state devices
Specific energy
Stability
Substrates
Supercapacitors
Synthesis
Thin films
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Summary:Hexagonal nanosheets like mesoporous nanostructures were developed on the flexible copper substrate as a binder-free thin-film electrode via a simple and cost-effective successive ionic layer adsorption and reaction (SILAR) technique. Among the numerous deposition techniques available for supercapacitor applications, this one was the most affordable and straightforward. Contact angle examination confirmed the hydrophilic nature of the deposited material. The obtained cobalt oxide/bismuth oxide/copper oxide electrode exhibited a notable specific capacitance (SC) of 1777.12 F/g at 2 mV/s in 1 M KOH and cycling stability (83.53% capacity holding after 5000 cycles). Furthermore, the asymmetric solid-state supercapacitor device assembled with cobalt oxide/bismuth oxide/copper oxide as a positive thin-film electrode and activated carbon (AC) as a negative thin-film electrode demonstrated a high specific energy (SE) of 20.46 Wh/kg at a specific power (SP) of 5640 W/kg and outstanding cycling stability (89.05% retained after 5000 cycles). As a consequence, it showed that the cobalt oxide/bismuth oxide/copper oxide synthesized by the SILAR technique could be a promising thin-film electrode for asymmetric solid-state supercapacitor devices with high energy density and power density.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-024-12220-4