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Type: Artigo de periódico
Title: Polyaniline Nanofibers-graphene Oxide Nanoplatelets Composite Thin Film Electrodes For Electrochemical Capacitors
Author: Khalid M.
Tumelero M.A.
Zoldan V.C.
Pla Cid C.C.
Franceschini D.F.
Timm R.A.
Kubota L.T.
Moshkalev S.A.
Pasa A.A.
Abstract: Composite thin films of polyaniline (PANI) nanofibers and graphene oxide (GO) nanoplatelets are synthesized through a simple electrodeposition process for electrochemical capacitors. The morphology and structure of the materials are investigated by field emission scanning electron microscopy, transmission electron microscopy, current sensing atomic force microscopy, X-ray photoelectron spectroscopy, Fourier transforms infrared spectroscopy, X-ray diffraction, and ultraviolet-visible spectroscopy. In the process of electrodeposition, the electrostatic interactions between the oxygen-functionalized graphene and aniline monomers at an electrolyte interface assisted the co-deposition of PANI nanofibers and GO nanoplatelets. These thin films have an excellent effect on the electrochemical properties with an electrochemical capacitance of 662 F g-1 at a low current density of 0.025 mA cm-2 with simultaneous high energy density (64.5 W h kg -1) and high power density (1159 W kg-1). The excellent electrochemical performance of the films is attributed to the unique structure of the material, showing synergy between PANI nanofibers and GO nanoplatelets. This journal is © the Partner Organisations 2014.
Editor: Royal Society of Chemistry
Rights: aberto
Identifier DOI: 10.1039/c4ra06145d
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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