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    The electropolymerization of pyrrole at a CuNi electrode: corrosion protection properties


    Fenelon, Anna M. and Breslin, Carmel B. (2003) The electropolymerization of pyrrole at a CuNi electrode: corrosion protection properties. Corrosion Science, 45 (12). pp. 2837-2850. ISSN 0010-938X

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    Abstract

    Pyrrole was successfully electropolymerized at a copper–nickel electrode in a near-neutral sodium oxalate solution containing Cu2+ cations to generate a homogenous and adherent polypyrrole film. The presence of the Cu2+ ions increased both the rate of the electropolymerization reaction and the adherence of the polymer at the CuNi interface. In the absence of these cations, oxidation of the electrode occurred generating a nickel-rich layer that was not sufficiently conducting, under the electropolymerization conditions employed, to facilitate the electron-transfer reaction and the electropolymerization of pyrrole. These films remained stable and exhibited significant corrosion protection properties in acidified and neutral 0.1 mol dm−3 NaCl solutions even on polarization of the electrodes to high anodic potentials.

    Item Type: Article
    Keywords: Polypyrrole; Copper–nickel; Corrosion protection; Electropolymerization;
    Academic Unit: Faculty of Science and Engineering > Chemistry
    Item ID: 7934
    Identification Number: https://doi.org/10.1016/S0010-938X(03)00104-5
    Depositing User: Dr. Carmel Breslin
    Date Deposited: 17 Feb 2017 17:09
    Journal or Publication Title: Corrosion Science
    Publisher: Elsevier
    Refereed: Yes
    Funders: Enterprise Ireland (EI)
    URI:

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