Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/328941
Type: Artigo
Title: One-step Electrodeposited 3d-ternary Composite Of Zirconia Nanoparticles, Rgo And Polypyrrole With Enhanced Supercapacitor Performance
One-step electrodeposited 3D-ternary composite of zirconia nanoparticles, rGO and polypyrrole with enhanced supercapacitor performance
Author: Alves, Ana Paula P.
Koizumi, Ryota
Samanta, Atanu
Machado, Leonardo D.
Singh, Abhisek K.
Galvao, Douglas S.
Silva, Glaura G.
Tiwary, Chandra S.
Ajayan, Pulickel M.
Abstract: Supercapacitor electrodes consisting of conjugated polymers (CP), metal oxides and graphene nanosheets have been explored as a strategy to achieve high specific capacitance, power, energy density, and stability. In this work, we synthesized a 3D structure composed of zirconia oxide nanoparticles (ZrO2), reduced graphene oxide (rGO) and polypyrrole (PPy), using a simple and easily scalable one-step chronopotentiometry method. Detailed characterization revealed that the addition of rGO and ZrO2 modified the morphology of the electrode material. The capacitance of the resulting architecture improved by up to a 100%. The ternary composite featured high stability, with an increase of 5% in capacitance after a thousand cycles. DFT and MD simulations were carried out in order to provide further insight on the role of zirconia.
Supercapacitor electrodes consisting of conjugated polymers (CP), metal oxides and graphene nanosheets have been explored as a strategy to achieve high specific capacitance, power, energy density, and stability. In this work, we synthesized a 3D structure composed of zirconia oxide nanoparticles (ZrO2), reduced graphene oxide (rGO) and polypyrrole (PPy), using a simple and easily scalable one-step chronopotentiometry method. Detailed characterization revealed that the addition of rGO and ZrO2 modified the morphology of the electrode material. The capacitance of the resulting architecture improved by up to a 100%. The ternary composite featured high stability, with an increase of 5% in capacitance after a thousand cycles. DFT and MD simulations were carried out in order to provide further insight on the role of zirconia.
Subject: Electrodeposited Ternary Composite
Zro2/rgo/ppy
3d-ternary Electrode
Supercapacitor
Dft
Md Simulation
Supercapacitores
Dinâmica molecular - Simulação por computador
Teoria do funcional de densidade
Country: Holanda
Editor: Elsevier
Citation: Nano Energy. Elsevier Science Bv, v. 31, p. 225 - 232, 2017.
Rights: fechado
Identifier DOI: 10.1016/j.nanoen.2016.11.018
Address: https://www.sciencedirect.com/science/article/pii/S221128551630502X
Date Issue: 2017
Appears in Collections:IFGW - Artigos e Outros Documentos

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