The iodine/iodide redox couple at a platinum electrode

L.M. Dane, L.J.J. Janssen, J.G. Hoogland

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    Abstract

    The I/iodide redox couple was studied on Pt in 0.5M H2SO4 by measuring the impedance as a function of frequency. From these measurements, the exchange c.d. j0 was derived according to Sluyters. The dependence of j0 on the reversible potential and the I and the iodide concns. was established. By comparing the theoretical slopes with the exptl. slopes, it is shown that the electrode process consists of the 3 reactions: I- -> Iad + e; Iad + I- -> I2 + e; I2 + I- -> I3-. The 2nd reaction det. the exchange c.d. The transfer coeff. is 0.5, the standard exchange c.d. is 400 ma./cm.2, and the energy of activation is 15 kcal./mole. [on SciFinder (R)]
    Original languageEnglish
    Pages (from-to)507-518
    Number of pages12
    JournalElectrochimica Acta
    Volume13
    Issue number3
    DOIs
    Publication statusPublished - 1968

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    Iodides
    Platinum
    Iodine
    Chemical activation
    Electrodes
    Oxidation-Reduction

    Cite this

    Dane, L. M., Janssen, L. J. J., & Hoogland, J. G. (1968). The iodine/iodide redox couple at a platinum electrode. Electrochimica Acta, 13(3), 507-518. https://doi.org/10.1016/0013-4686(68)87022-7
    Dane, L.M. ; Janssen, L.J.J. ; Hoogland, J.G. / The iodine/iodide redox couple at a platinum electrode. In: Electrochimica Acta. 1968 ; Vol. 13, No. 3. pp. 507-518.
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    abstract = "The I/iodide redox couple was studied on Pt in 0.5M H2SO4 by measuring the impedance as a function of frequency. From these measurements, the exchange c.d. j0 was derived according to Sluyters. The dependence of j0 on the reversible potential and the I and the iodide concns. was established. By comparing the theoretical slopes with the exptl. slopes, it is shown that the electrode process consists of the 3 reactions: I- -> Iad + e; Iad + I- -> I2 + e; I2 + I- -> I3-. The 2nd reaction det. the exchange c.d. The transfer coeff. is 0.5, the standard exchange c.d. is 400 ma./cm.2, and the energy of activation is 15 kcal./mole. [on SciFinder (R)]",
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    Dane, LM, Janssen, LJJ & Hoogland, JG 1968, 'The iodine/iodide redox couple at a platinum electrode', Electrochimica Acta, vol. 13, no. 3, pp. 507-518. https://doi.org/10.1016/0013-4686(68)87022-7

    The iodine/iodide redox couple at a platinum electrode. / Dane, L.M.; Janssen, L.J.J.; Hoogland, J.G.

    In: Electrochimica Acta, Vol. 13, No. 3, 1968, p. 507-518.

    Research output: Contribution to journalArticleAcademicpeer-review

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    AU - Hoogland, J.G.

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    N2 - The I/iodide redox couple was studied on Pt in 0.5M H2SO4 by measuring the impedance as a function of frequency. From these measurements, the exchange c.d. j0 was derived according to Sluyters. The dependence of j0 on the reversible potential and the I and the iodide concns. was established. By comparing the theoretical slopes with the exptl. slopes, it is shown that the electrode process consists of the 3 reactions: I- -> Iad + e; Iad + I- -> I2 + e; I2 + I- -> I3-. The 2nd reaction det. the exchange c.d. The transfer coeff. is 0.5, the standard exchange c.d. is 400 ma./cm.2, and the energy of activation is 15 kcal./mole. [on SciFinder (R)]

    AB - The I/iodide redox couple was studied on Pt in 0.5M H2SO4 by measuring the impedance as a function of frequency. From these measurements, the exchange c.d. j0 was derived according to Sluyters. The dependence of j0 on the reversible potential and the I and the iodide concns. was established. By comparing the theoretical slopes with the exptl. slopes, it is shown that the electrode process consists of the 3 reactions: I- -> Iad + e; Iad + I- -> I2 + e; I2 + I- -> I3-. The 2nd reaction det. the exchange c.d. The transfer coeff. is 0.5, the standard exchange c.d. is 400 ma./cm.2, and the energy of activation is 15 kcal./mole. [on SciFinder (R)]

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