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Electrochemical Properties of a PEDOT-Based Conducting Redox Polymer
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials.ORCID iD: 0000-0002-0036-9911
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials.
2017 (English)Conference paper, Poster (with or without abstract) (Other academic)
Abstract [en]

Organic molecules are generally insulating and to ensure electrical conductivity when organic matter is used as electrode materials, conducting additives are commonly used. Another approach is to use conducting polymers as a backbone to which the capacity carrying redox active pendant groups are attached. In this work we employed poly(3,4-ethylenedioxythiophene) (PEDOT) with different quinone moieties as pendant groups, forming conducting redox polymers (CRPs). By using quinones with different redox potentials, CRPs can be used as electrode materials in all-organic batteries where the difference in formal potential between the quinone redox reactions determines the cell-potential of the battery. To avoid the use of flammable and harmful organic electrolytes we used acidic water based electrolytes in the characterization of these polymers, including in situ conductance, electrochemical quartz crystal microbalance measurements, and cyclic voltammetry. The results from polymers carrying different quinones will be presented. For example: in situ conductance measurements of benzoquinone substituted CRPs show that redox matching is evident, i.e. the quinone pendant group has its redox reaction occurring in a potential window where the polymer is conducting (Figure 1). The polymers also show fast kinetics and during the quinone redox conversion only protons seem to be cycled in and out of the CRPs.

Place, publisher, year, edition, pages
2017.
Keyword [en]
PEDOT, Quinone, Conducting redox polymer
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
URN: urn:nbn:se:uu:diva-330241OAI: oai:DiVA.org:uu-330241DiVA: diva2:1145172
Conference
Organic Battery Days, Uppsala
Available from: 2017-09-28 Created: 2017-09-28 Last updated: 2017-09-28

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Sterby, MiaEmanuelsson, RikardStrømme, MariaSjödin, Martin
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