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The Influence of Coupled Faradaic and Charging Currents on Impedance Spectroscopy

Authors
  • Wu, Shao-Ling
  • Orazem, Mark E.
  • Tribollet, Bernard
  • Vivier, Vincent
Type
Published Article
Journal
Electrochimica Acta
Publisher
Elsevier
Publication Date
Jan 01, 2014
Accepted Date
Jan 20, 2014
Identifiers
DOI: 10.1016/j.electacta.2014.01.120
Source
Elsevier
Keywords
License
Unknown

Abstract

The coupling of faradaic and charging currents is shown, by numerical simulation, to result in impedance responses showing high-frequency frequency dispersion that resembles pseudo-Constant-Phase-Element (CPE) behavior. The results show that coupling of faradaic and charging currents should be considered when modeling the impedance response for systems influenced by mass transfer, even for large concentrations of supporting electrolyte.

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