Journal of Solid State Electrochemistry

, Volume 18, Issue 12, pp 3239–3243 | Cite as

Thin film-modified electrodes: a model for the charge transfer resistance in electrochemical impedance spectroscopy

  • Shaltiel Eloul
  • Christopher Batchelor-McAuley
  • Richard G. Compton
Feature Article


A simple but general model is derived for the charge transfer resistance for a solution phase redox couple reacting at an electrode modified with a thin film such as a self-assembled monolayer. The layer itself is non-electroactive but changes the impedance response by virtue of altering the solubilities and diffusion coefficients of the electroactive species within the layer as compared to bulk solution. Such effects can give the illusion of altered electron transfer characteristics.


Modified electrodes Electrochemical impedance spectroscopy Thin film Self-assembled monolayer Charge transfer resistance 



The research leading to these results has received partial funding from the European Research Council under the European Union’s Seventh Framework Programme (FP/2007-2013)/ERC Grant Agreement No. 320403.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Shaltiel Eloul
    • 1
  • Christopher Batchelor-McAuley
    • 1
  • Richard G. Compton
    • 1
  1. 1.Department of Chemistry, Physical and Theoretical Chemistry LaboratoryUniversity of OxfordOxfordUK

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