The Apparent Constant-Phase-Element Behavior of an Ideally Polarized Blocking Electrode | Zendy

Vicky Mei-Wen Huang | Zendy; Vincent Vivier | Zendy; Mark E. Orazem | Zendy; Nadine Pébère | Zendy; Bernard Tribollet | Zendy

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The Apparent Constant-Phase-Element Behavior of an Ideally Polarized Blocking Electrode

Author(s) -

Vicky Mei-Wen Huang,

Vincent Vivier,

Mark E. Orazem,

Nadine Pébère,

Bernard Tribollet

Publication year - 2007

Publication title -

journal of the electrochemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.258

H-Index - 271

eISSN - 1945-7111

pISSN - 0013-4651

DOI - 10.1149/1.2398882

Subject(s) - electrical impedance , constant phase element , electrode , ohmic contact , exponent , constant (computer programming) , phase (matter) , dispersion (optics) , materials science , chemistry , physics , mathematical analysis , dielectric spectroscopy , mathematics , optics , computer science , electrochemistry , linguistics , philosophy , quantum mechanics , programming language , organic chemistry

International audienceTwo numerical methods were used to calculate the influence of geometry-induced current and potential distributions on the impedance response of an ideally polarized disk electrode. A coherent notation is proposed for local and global impedance which accounts for global, local, local interfacial, and both global and local ohmic impedances. The local and ohmic impedances are shown to provide insight into the frequency dispersion associated with the geometry of disk electrodes. The high-frequency global impedance response has the appearance of a constant-phase element CPE but can be considered to be only an apparent CPE because the CPE exponent is a function of frequency

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