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Copper nanoparticles incorporated porous carbon nanofibers as a freestanding binder-free electrode for symmetric supercapacitor with enhanced electrochemical performance
Thirugnanam Lavanya,
Published in Institute of Physics Publishing
2019
Volume: 6
   
Issue: 10
Abstract
A freestanding and binder free copper/porous carbon nanofibers (Cu/PCNFs) composite has been synthesized by a simple and cost effective electrospinning technique. The synthesized composite exhibits a unique morphology with high surface area of about 330.48 m2g-1 and high conductivity of 767.95 Sm-1. In a three electrodes system, the resultant Cu/PCNFs electrodes show a specific capacitance of 333.5 Fg-1 at a current density of 1 Ag-1 in 1 M of H2SO4 aqueous electrolyte. The assembled quasi-solid state symmetric supercapacitor (q-SSSC) exhibits a high specific capacitance value of 177.01 Fg-1 at a current density of 1.5 Ag-1 in PVA/H2SO4 polymer gel electrolyte with 95.8% capacitance retention up to 10 000 cycles. This q-SSSC can effectively deliver a high energy density of 24.53 Wh kg-1 at a power density of 1500 W kg-1. Thus, the synthesized Cu/PCNFs composites could be useful as an effective electrode material for next-generation high performance flexible supercapacitors. © 2019 IOP Publishing Ltd.
About the journal
JournalMaterials Research Express
PublisherInstitute of Physics Publishing
ISSN20531591
Open AccessNo
Concepts (20)
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    Capacitance
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    Carbon nanofibers
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    Copper
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    Cost effectiveness
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    Electrospinning
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    Morphology
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    Polyelectrolytes
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    Porous materials
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    Silver compounds
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    Solid electrolytes
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    Supercapacitor
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    Electrochemical performance
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    Electrospinning techniques
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    FREESTANDING
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    High energy densities
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    High specific capacitances
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    PCNFS
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    POLYMER GEL ELECTROLYTES
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    POROUS CARBON NANOFIBERS
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    Electrochemical electrodes