Binder-free polyaniline interconnected metal hexacyanoferrates nanocomposites (Metal = Ni, Co) on carbon fibers for flexible supercapacitors

Improvement of the electrical conductivity, specific capacitance and binder-free polyaniline (PANI) interconnected with metal(II) hexacyanoferrate(III) (MHCF) nanocomposites (M = Ni, Co) on flexible carbon fibers (CF) were designed in our present research goal. PANI/MHCF/CF nanocomposites were prepa...

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Veröffentlicht in:Journal of materials science. Materials in electronics 2017-12, Vol.28 (23), p.17405-17413
Hauptverfasser: Maier, M. A., Suresh Babu, R., Sampaio, D. M., de Barros, A. L. F.
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container_end_page 17413
container_issue 23
container_start_page 17405
container_title Journal of materials science. Materials in electronics
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creator Maier, M. A.
Suresh Babu, R.
Sampaio, D. M.
de Barros, A. L. F.
description Improvement of the electrical conductivity, specific capacitance and binder-free polyaniline (PANI) interconnected with metal(II) hexacyanoferrate(III) (MHCF) nanocomposites (M = Ni, Co) on flexible carbon fibers (CF) were designed in our present research goal. PANI/MHCF/CF nanocomposites were prepared by one-step co-polymerization method. Electrochemical studies like cyclic voltammetry, galvanostatic charge–discharge and electrochemical impedance spectroscopy were analyzed. Under the optimized conditions, the nanocomposites demonstrated remarkable electrochemical performances as supercapacitor electrode with outstanding specific capacitances of ~725 F g −1 at a current density of 1 A g −1 , and retained ~325 F g −1 even at a high current density of 20 A g −1 in 0.5 M H 2 SO 4  + 0.5 M Na 2 SO 4 solution. The excellent cycling stability with capacitance retention of 80% after 1000 cycles may be a potential electrode material for future supercapacitor when its cycling stability and rate performance are addressed.
doi_str_mv 10.1007/s10854-017-7674-z
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Under the optimized conditions, the nanocomposites demonstrated remarkable electrochemical performances as supercapacitor electrode with outstanding specific capacitances of ~725 F g −1 at a current density of 1 A g −1 , and retained ~325 F g −1 even at a high current density of 20 A g −1 in 0.5 M H 2 SO 4  + 0.5 M Na 2 SO 4 solution. 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subjects Capacitance
Carbon fibers
Characterization and Evaluation of Materials
Chemistry and Materials Science
Cobalt
Copolymerization
Current density
Electrical resistivity
Electrochemical impedance spectroscopy
Electrode materials
Electrodes
Materials Science
Nanocomposites
Nickel
Optical and Electronic Materials
Polyanilines
Stability
Supercapacitors
title Binder-free polyaniline interconnected metal hexacyanoferrates nanocomposites (Metal = Ni, Co) on carbon fibers for flexible supercapacitors
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