Membrane voltammetry: the metal/electrolyte interface

Literature Information

Publication Date 2001-07-02
DOI 10.1039/B103038H
Impact Factor 3.676
Authors

Brett Kralj, Robert A. W. Dryfe


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Abstract

A straightforward method to generate ensembles of microelectrodes, using a commercial membrane material is reported. Quantitative analysis of the oxidative currents flowing for a solution phase redox probe (in voltammetric and chronoamperometric experiments) shows that a recessed microelectrode model describes transport to the individual elements of the ensemble. Treatment of the recessed electrode geometry in terms of an equivalent inlaid microelectrode geometry is described. This approximation allows the voltage sweep rate dependence of the voltammetric currents and the standard electron transfer rate constant of the redox probe to be obtained using existing theory. Furthermore, we propose that membrane voltammetry may be a useful tool for the characterisation of porous materials, given the inherent sensitivity of electrochemical experiments to mass transport parameters.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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