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Electrochemical performance of Terephthalate-Functionalized Poly(3,4-ethylenedioxythiophene) conducting redox polymer
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials. (Nanotechnolgoy and Functional Materials)
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry, Biochemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials. (Nanotechnology and Functionals)
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials. (Nanotechnology and Functional)
2017 (English)Conference paper, Poster (with or without abstract) (Refereed)
Abstract [en]

Traditional inorganic energy storage materials involve high carbon emissions and low renewability. As an alternative battery material, organic conducting redox polymers (CRPs) have caught much attention in recent years due to the sustainable raw materials and low energy consumption used in their production1. CRPs consist of a conducting polymer (CP) backbone, a redox active pendant group (PG), and a linker. The CP contributes to conductivity and hinders dissolution of PGs, while the PGs provide capacity for the polymer2. The present work involves the CP poly(3,4-ethylenedioxythiophene) (PEDOT) and a terephthalate PG in acetonitrile. The CRP is characterized by Electrochemical Quartz Crystal Microbalance and Electron Spin Resonance during the doping process. Temperature-dependence in situ conductances are measured to probe the thermodynamic processes within the CRP. [HW1] Cyclic voltammetry at different scan rates is employed to investigate the charge transfer kinetic process. The rate constant for electron transport in the polymer is calculated and the rate-limiting step is identified. Based on the results, the electron and ion transport during electrochemical redox conversion is discussed.  Cycle stability is also investigated to improve the electrochemical performance in the n-doping potential region, so as to enhance the possibility of full organic battery fabrication.

 

Place, publisher, year, edition, pages
2017.
National Category
Engineering and Technology Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
URN: urn:nbn:se:uu:diva-332991OAI: oai:DiVA.org:uu-332991DiVA: diva2:1154743
Conference
2017 spring European Materials Research Society
Available from: 2017-11-03 Created: 2017-11-03 Last updated: 2017-11-23

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