The concentration impedances of electrolyte species involved in an electro-chemical reaction taking place on a rotating disk electrode are not always classical convective diffusion impedances expressed as R th(taup)1/2/(taup)1/2. They are classical when the flux of the species at the interface is proportional to the faradaic current density. The concentration impedances of the electrolyte species are however more complicated when the structure of the reaction mechanism is such that this condition is not satisfied. A mechanism for the anodic dissolution of a metal, one of the simplest mechanisms presenting this property, has been investigated. For certain values of kinetic parameters and electrode potential, it is nevertheless possible to obtain impedance diagrams comprising an arc with a shape that is analogous to that of a convective diffusion impedance.
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ECOLE NATL SUPER ELECTROCHIM & ELECTROMET GRENOBLE,F-38402 ST MARTIN HERES,FRANCEECOLE NATL SUPER ELECTROCHIM & ELECTROMET GRENOBLE,F-38402 ST MARTIN HERES,FRANCE
GIMENEZ, I
DIARD, JP
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ECOLE NATL SUPER ELECTROCHIM & ELECTROMET GRENOBLE,F-38402 ST MARTIN HERES,FRANCEECOLE NATL SUPER ELECTROCHIM & ELECTROMET GRENOBLE,F-38402 ST MARTIN HERES,FRANCE
DIARD, JP
LEGORREC, B
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ECOLE NATL SUPER ELECTROCHIM & ELECTROMET GRENOBLE,F-38402 ST MARTIN HERES,FRANCEECOLE NATL SUPER ELECTROCHIM & ELECTROMET GRENOBLE,F-38402 ST MARTIN HERES,FRANCE
LEGORREC, B
MAXIMOVITCH, S
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ECOLE NATL SUPER ELECTROCHIM & ELECTROMET GRENOBLE,F-38402 ST MARTIN HERES,FRANCEECOLE NATL SUPER ELECTROCHIM & ELECTROMET GRENOBLE,F-38402 ST MARTIN HERES,FRANCE
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ECOLE NATL SUPER ELECTROCHIM & ELECTROMET GRENOBLE,F-38402 ST MARTIN HERES,FRANCEECOLE NATL SUPER ELECTROCHIM & ELECTROMET GRENOBLE,F-38402 ST MARTIN HERES,FRANCE
GIMENEZ, I
DIARD, JP
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ECOLE NATL SUPER ELECTROCHIM & ELECTROMET GRENOBLE,F-38402 ST MARTIN HERES,FRANCEECOLE NATL SUPER ELECTROCHIM & ELECTROMET GRENOBLE,F-38402 ST MARTIN HERES,FRANCE
DIARD, JP
LEGORREC, B
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ECOLE NATL SUPER ELECTROCHIM & ELECTROMET GRENOBLE,F-38402 ST MARTIN HERES,FRANCEECOLE NATL SUPER ELECTROCHIM & ELECTROMET GRENOBLE,F-38402 ST MARTIN HERES,FRANCE
LEGORREC, B
MAXIMOVITCH, S
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ECOLE NATL SUPER ELECTROCHIM & ELECTROMET GRENOBLE,F-38402 ST MARTIN HERES,FRANCEECOLE NATL SUPER ELECTROCHIM & ELECTROMET GRENOBLE,F-38402 ST MARTIN HERES,FRANCE