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    The formation of polypyrrole at iron from 1-butyl-3-methylimidazolium hexafluorophosphate


    Fenelon, Anna M. and Breslin, Carmel B. (2005) The formation of polypyrrole at iron from 1-butyl-3-methylimidazolium hexafluorophosphate. Journal of the Electrochemical Society, 152 (1). D6-D11. ISSN 0013-4651

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    Abstract

    The ionic liquid, 1-butyl-3-methylimidazolium hexafluorophosphate, was used to deposit adherent and highly conducting polypyrrole coatings at pure iron using a simple potentiostatic technique. Adherent and highly conducting polypyrrole films were formed at the iron substrate using potentials in the range from 1.0 to 1.4 V and with pyrrole concentrations between 0.1 and 0.3 mol dm−3. An increase in the applied potential, or the concentration of the monomer, gave rise to an increase in the rate of polymer growth. The polypyrrole-coated iron electrodes were electroactive and remained highly conducting and stable in the ionic liquid. Using electrochemical impedance spectroscopy, the charge-transfer resistance of the uncoated iron electrode was determined as 1.25×104 Ω cm2 compared to the much lower resistance of 1.90×102 Ω cm2 measured for the highly conducting polypyrrole-coated electrode in the ionic liquid. © 2004 The Electrochemical Society. All rights reserved.

    Item Type: Article
    Keywords: conducting polymers; polymer films; thin films; iron; electrodeposition; electrodeposits; polymerisation; electrochemical electrodes; charge exchange; ionic conductivity; voltammetry (chemical analysis); electrochemical impedance spectroscopy; ultraviolet spectra; visible spectra; Fourier transform spectra;
    Academic Unit: Faculty of Science and Engineering > Chemistry
    Item ID: 7928
    Identification Number: https://doi.org/10.1149/1.1831211
    Depositing User: Dr. Carmel Breslin
    Date Deposited: 15 Feb 2017 16:38
    Journal or Publication Title: Journal of the Electrochemical Society
    Publisher: Electrochemical Society
    Refereed: Yes
    Funders: Enterprise Ireland (EI)
    URI:

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