20.500.12556/DiRROS-15844 Modelling the electrochemical transients during repassivation under open-circuit conditions in a neutral solution The responses of the current and the coupled potential to rapid depassivation have been studied on a three-electrode system under open-circuit conditions. Passivated AISI 304 stainless steel in low- and high-conductivity solutions of NaSO has been depassivated with a single, rapid scratch over the small fraction of surface of the working electrode (WE). Single- and dual-WE configurations have been implemented. Once the surface is scratched, the current and potential transients exhibit a delayed maximum and minimum, respectively, in contrast to the outcome of more common potentiostatic scratching experiments. A simple model based on the equivalent circuit has been developed to predict the observed transients and provides clear relations between the features of the transient and the parameters of the electrolyte and the electrodes. The interfacial capacitance of the electrodes’ passive surfaces proves crucial for the shapes of the observed potential and current transients. It is shown that this capacitance temporarily provides the majority of the charge for repassivation under open-circuit conditions. Possible sources of specific discrepancies between the model and the measured transients are indicated. repassivation open circuit conditions transient modelling interfacial capacitance repasivacija potencial odprtega kroga prehodni pojav modeliranje kapacitivnost elektrokemičnega dvosloja true false true Pergamon Press Angleški jezik Slovenski jezik © 2021 The Author(s). Published by Elsevier Ltd. Neznano 2022-11-24 08:47:10 2023-06-21 07:40:48 2023-06-22 03:35:50 0000-00-00 00:00:00 2022 0 0 Št. članka 139685; str. 1-10 Vol. 404 Feb. 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2021-12-01 54 0013-4686 10.1016/j.electacta.2021.139685 88895491 https://www.sciencedirect.com/science/article/pii/S0013468621019691?via%3Dihub 1 d20004fb-6bc3-11ed-a69a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=20951 RAZ_Zajec_Bojan_2022.pdf RAZ_Zajec_Bojan_2022.pdf 1 8ABF36984E675E52D9457397B6025E34 cca7c753d922d03eb5fe0cbdbf556364d5242dfbd14a4db5964b19bd44bbbe78 c84b0d9d-9720-11ed-b359-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=21393 Zavod za gradbeništvo Slovenije 0 0 0