The influence of uncompensated solution resistance in large-amplitude potential step chronoamperometry involving reversible redox systems was investigated. By means of additional external resistors, the system-imminent resistance could be deliberately changed. The observed current-transients show significant deviations from the ideal "Cottrell" behaviour. It is shown by means of digital simulation experiments that already small uncompensated resistance values give rise to distorted current-transients particularly in systems with high charging or faradaic currents. This effect manifests itself in particular in electrochemical reactions on polymer-coated electrodes. © 1989.
Richtering, W., & Doblhofer, K. (1989). Effect of uncompensated resistance on large-amplitude chronoamperometric experiments. Electrochimica Acta, 34(12), 1685–1688. https://doi.org/10.1016/0013-4686(89)85049-2