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Electrochemical performance of polyaniline nanofibres and polyaniline/multi-walled carbon nanotube composite as an electrode material for aqueous redox supercapacitors
journal contributionposted on 27.09.2007, 00:00 authored by S Sivakkumar, W Kim, J A Choi, D MacFarlane, Maria ForsythMaria Forsyth, D W Kim
Polyaniline (PANI) nanofibres are synthesized by interfacial polymerization and their electrochemical performance is evaluated in an aqueous redox supercapacitor constituted as a two-electrode cell. The initial specific capacitance of the cell is 554 F g−1 at a constant current of 1.0 A g−1, but this value rapidly decreases on continuous cycling. In order to improve the cycleability of the supercapacitor, a composite of polyaniline with multi-walled carbon nanotubes (CNTs) is synthesized by in situ chemical polymerization. Its capacitive behaviour is evaluated in a similar cell configuration. A high initial specific capacitance of 606 F g−1 is obtained with good retention on cycling. In both supercapacitors, the effect of charging potential on cycling performances is investigated.
JournalJournal of power sources
Pagination1062 - 1068
Publication classificationC1.1 Refereed article in a scholarly journal
Copyright notice2007, Elsevier B.V. All rights reserved.
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Carbon nanotubeComposite electrodeElectrochemical capacitorPolyanilineRedox supercapacitorScience & TechnologyPhysical SciencesTechnologyChemistry, PhysicalElectrochemistryEnergy & FuelsMaterials Science, MultidisciplinaryChemistryMaterials ScienceDEPOSITED POLYANILINECONDUCTING POLYMERSSTAINLESS-STEELCAPACITANCENANOWIRESSALT