One-pot synthesis of reduced graphene oxide/chitosan/zinc oxide ternary nanocomposites for supercapacitor electrodes with enhanced electrochemical properties

[Display omitted] •RGO/Cs/ZnO ternary nanocomposite was synthesized via facile one pot synthesis using hydrothermal technique.•RGO/Cs/ZnO nanocomposites showed high specific capacitance and excellent cycling stability.•The prolonged time of hydrothermal process enhanced the electrochemical and capac...

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Bibliographic Details
Published in:Materials letters 2022-05, Vol.314, p.131846, Article 131846
Main Authors: Handayani, Murni, Mulyaningsih, Yhana, Aulia Anggoro, M., Abbas, Aumber, Setiawan, Iwan, Triawan, Farid, Darsono, Nono, Nugraha Thaha, Yudi, Kartika, Ika, Ketut Sunnardianto, Gagus, Anshori, Isa, Lisak, Grzegorz
Format: Article
Language:English
Subjects:
Capacitance
Chitosan
Electrochemical analysis
Graphene
Hydrothermal method
Materials science
Nanocomposite
Nanocomposites
Nanoparticles
reduced graphene oxide/Chitosan/ZnO
Supercapacitor
Supercapacitors
Zinc oxide
Zinc oxides
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Summary:[Display omitted] •RGO/Cs/ZnO ternary nanocomposite was synthesized via facile one pot synthesis using hydrothermal technique.•RGO/Cs/ZnO nanocomposites showed high specific capacitance and excellent cycling stability.•The prolonged time of hydrothermal process enhanced the electrochemical and capacitive behavior.•Excellent cyclic stability of 97.4% was kept after 5000 cycles at a current density of 2 A/g. The ternary nanocomposite of reduced graphene oxide/chitosan/ZnO (RGO/Cs/ZnO) was synthesized by a facile one-step hydrothermal route. The structure-capacitive performance relationships and the effect of the prolonged time of hydrothermal process for supercapacitor applications are studied. In the prolonged hydrothermal process of 20 h, the ternary nanocomposite exhibits more homogeneously ZnO nanoparticles and chitosan distributed on finer layers of graphene nanosheet. Interestingly, it shows both increased conductivity and electroactive sites. As a result, it enhances electrochemical properties for a supercapacitor device, reaching the highest specific capacitance of 137.7 F/g at 0.5 A/g and capacitance retention attains excellent cyclic stability of 97.4% after 5000 cycles at a current density of 2 A/g.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2022.131846