Redox switching of polyoxometalate-doped polypyrrole films in ionic liquid media

Nargis Anwar, Gordon Armstrong, Fathima Laffir, Calum Dickinson, Mikhail Vagin, Timothy McCormac

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The surface immobilization of the parent Dawson polyoxometalate (POM) as a counter-ion for the electropolymerization of polypyrrole (PPy) or as an electrode-adhered solid was utilized for voltammetric studies of the surface adhered POM in room temperature ionic liquids (RTIL). Illustrating the efficiency of intermediate stabilization, voltammetry at POM-modified electrodes in a PF6-based RTIL revealed richer redox behaviour and higher stabilization in comparison with aqueous electrolytes and with BF4-based RTIL, respectively. High stability of the POM-doped PPy towards continuous charge-discharge voltammetric redox cycles was confirmed by minor changes in film morphology observed after the cycling in RTILs.

    Original languageEnglish
    Pages (from-to)254-258
    Number of pages5
    JournalElectrochimica Acta
    Volume265
    DOIs
    Publication statusPublished - 1 Mar 2018

    Keywords

    • Polyoxometalate
    • Room temperature ionic liquid
    • Voltammetry

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