The Global and Local Impedance Response of a Blocking Disk Electrode with Local Constant-Phase-Element Behavior - Laboratoire Interfaces et Systèmes Electrochimiques Accéder directement au contenu
Article Dans Une Revue Journal of The Electrochemical Society Année : 2007

The Global and Local Impedance Response of a Blocking Disk Electrode with Local Constant-Phase-Element Behavior

Résumé

Numerical methods were used to calculate the influence of geometry-induced current and potential distributions on the impedance response of a blocking disk electrode with a local constant-phase element behavior. While the calculated global impedance is purely capacitive, the local impedance has high-frequency inductive loops that were observed in experiments conducted on a stainless steel electrode in 0.05 M NaCl + 0.005 M Na2SO4 electrolyte. The calculated global impedance responses are in good agreement with experimental results obtained using both the steel electrode and a glassy-carbon disk in KCl electrolytes of differing concentrations. The computed local and both local and global ohmic impedances are shown to provide insight into the frequency dispersion associated with the geometry of disk electrodes.

Domaines

Chimie

Dates et versions

hal-01727863 , version 1 (09-03-2018)

Identifiants

Citer

Vicky Mei-Wen Huang, Vincent Vivier, Isabelle Frateur, Mark Orazem, Bernard Tribollet. The Global and Local Impedance Response of a Blocking Disk Electrode with Local Constant-Phase-Element Behavior. Journal of The Electrochemical Society, 2007, 154 (2), pp.C89-C98. ⟨10.1149/1.2398889⟩. ⟨hal-01727863⟩
46 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More