Related Experiment Video
Updated: Jul 4, 2026

Precise Electrochemical Sizing of Individual Electro-Inactive Particles
Published on: August 4, 2023
Extraction of electrode kinetic parameters from microdisc voltammetric data measured under transport conditions
Alexander S Barnes1, Emma I Rogers, Ian Streeter
1Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford OX1 3QZ, United Kingdom.
Abstract:
The extraction of electrode kinetic parameters for electrochemical couples in room-temperature ionic liquids (RTILs) is currently an area of considerable interest. Electrochemists typically measure electrode kinetics in the limits of either transient planar or steady-state convergent diffusion for which the voltammetric response is well understood. In this paper we develop a general method allowing the extraction of this kinetic data in the region where the diffusion is intermediate between the planar and convergent limits, such as is often encountered in RTILs using microelectrode voltammetry. A general working surface is derived, allowing the inference of Butler-Volmer standard electrochemical rate constants for the peak-to-peak potential separation in a cyclic voltammogram as a function of voltage scan rate. The method is applied to the case of the ferrocene/ferrocenium couple in [C2mim][N(Tf)2] and [C4mim][N(Tf)2].
Related Concept Videos
Voltammetric Techniques: Linear-Scan (E vs Time)
Interfacial Electrochemical Methods: Overview
Voltammetry: Factors Affecting Measurements
Processes at Electrodes
Voltammograms: Overview
Shapes of Voltammograms
Voltammetry: Stripping Methods
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...

