Mirceski, Valentin and Puiu, Mihaela and Gulaboski, Rubin and Skrzypek, Sławomira and Bala, Camelia (2025) Surface electrode processes in the light of implicit anodic and cathodic current components. Journal of Solid State Electrochemistry, 29 (6). pp. 2203-2212. ISSN 1432-8488
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Abstract
A recently introduced methodology (Sci Rep 14:17314) for estimating the implicit anodic and cathodic current components of a net, experimentally measured current at a given potential is applied to surface-confined, diffusionless electrode processes. Under the simplest conditions of a voltammetric experiment with a linear potential sweep, the conventional voltammogram is
deconstructed into genuine anodic and cathodic current components. These components exhibit high sensitivity to electrode kinetics, offering an alternative perspective on electrochemical reversibility compared to conventional cyclic voltammetry. To calculate the implicit current components, prior knowledge of the formal potential of the redox couple is required, along with integration of the net current. Once determined, these current components allow independent estimation of the electrode kinetic parameters, i.e., standard rate constant and the electron transfer coefficient, either through Tafel-like analysis or by
employing a novel form of differential current. In the kinetic regime of very fast, seemingly electrochemically reversible electrode reactions—where the net current becomes independent of electrode kinetics—the implicit current components remain highly sensitive to these kinetics. The theoretical considerations are supported by experiments on the reduction of methylene blue, covalently immobilized on a gold electrode via the self-assembly of a mixed peptide-thiol layer.
Item Type: | Article |
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Impact Factor Value: | 2.5 |
Subjects: | Natural sciences > Chemical sciences Natural sciences > Physical sciences |
Divisions: | Faculty of Medical Science |
Depositing User: | Rubin Gulaboski |
Date Deposited: | 30 Jun 2025 08:02 |
Last Modified: | 30 Jun 2025 08:03 |
URI: | https://eprints.ugd.edu.mk/id/eprint/36144 |