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Stable Deep Doping of Vapor-Phase Polymerized Poly(3,4-ethylenedioxythiophene)/Ionic Liquid Supercapacitors.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials. (Nanoteknologi och funktionella material)
Univ South Australia, Future Ind Inst, Thin Film Coatings Grp, Adelaide, SA 5001, Australia.; Univ Bath, Dept Chem, Bath BA2 7AY, Avon, England.
Univ South Australia, Future Ind Inst, Thin Film Coatings Grp, Adelaide, SA 5001, Australia.
Deakin Univ, ARC Ctr Excellence Electromat Sci, Burwood 3125, Australia.
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2016 (English)In: ChemSusChem, ISSN 1864-5631, E-ISSN 1864-564X, Vol. 9, no 16, 2112-2121 p.Article in journal (Refereed) Published
Abstract [en]

Liquid-solution polymerization and vapor-phase polymerization (VPP) have been used to manufacture a series of chloride- and tosylate-doped poly(3,4-ethylenedioxythiophene) (PEDOT) carbon paper electrodes. The electrochemistry, specific capacitance, and specific charge were determined for single electrodes in 1-ethyl-3-methylimidazolium dicyanamide (emim dca) ionic liquid electrolyte. VPP-PEDOT exhibits outstanding properties with a specific capacitance higher than 300 F g(-1) , the highest value reported for a PEDOT-based conducting polymer, and doping levels as high as 0.7 charges per monomer were achieved. Furthermore, symmetric PEDOT supercapacitor cells with the emim dca electrolyte exhibited a high specific capacitance (76.4 F g(-1) ) and high specific energy (19.8 Wh kg(-1) ). A Ragone plot shows that the VPP-PEDOT cells combine the high specific power of conventional ("pure") capacitors with the high specific energy of batteries, a highly sought-after target for energy storage.

Place, publisher, year, edition, pages
2016. Vol. 9, no 16, 2112-2121 p.
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
URN: urn:nbn:se:uu:diva-299945DOI: 10.1002/cssc.201600333ISI: 000383267600014PubMedID: 27325487OAI: oai:DiVA.org:uu-299945DiVA: diva2:950462
Funder
EU, Horizon 2020, 644631Stiftelsen Olle Engkvist ByggmästareSwedish Foundation for Strategic Research
Available from: 2016-07-31 Created: 2016-07-31 Last updated: 2017-01-25Bibliographically approved

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Karlsson, ChristofferStrömme, MariaSjödin, Martin
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