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Electrochemical Characterization of Conducting Redox Polymers – Redox Matching and Mass Transport
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]

In order to provide society with sustainable electrical energy storage technologies, organic based batteries is an attractive target. Making batteries with materials from renewable resources would ensure production without the use of non-renewable inorganic materials that have to be acquired through energy consuming mining. To ensure sufficient conductivity, most organic batteries researched on today use conducting additives since organic molecules, in general, are insulating. A different approach is to use conducting redox polymers (CRPs). They utilize a conducting polymer as a backbone for good conductivity and redox active pendant groups to ensure high charge storage capacity and a well-defined redox process. The polymer backbone used in the present work is poly(3,4-ethylenedioxythiophene) while quinones are used as pendant groups. In an all-organic battery the two electrodes will have quinones with different redox potentials, resulting in a voltage difference between the electrodes. This work focuses on characterizing the cathode material in water electrolytes. The CRPs are studied with regard to conductivity and mass transport, by in situ conductance as well as electrochemical quartz crystal microbalance experiments. Redox matching between the conducting polymer and the pendant group is evident from in situ conductance measurements. From EQCM measurements it is evident that during the hydroquinone/quinone redox conversion only protons are cycled in and out of the CRP.

Place, publisher, year, edition, pages
2017.
Keyword [en]
PEDOT, Conducting redox polymer, Redox matching
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
URN: urn:nbn:se:uu:diva-330238OAI: oai:DiVA.org:uu-330238DiVA: diva2:1145165
Conference
E-MRS Spring Meeting, Strasbourg (France)
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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