Theoretical and experimental study of Differential Pulse Voltammetry at spherical electrodes: Measuring diffusion coefficients and formal potentials

A. Molina, E. Laborda, F. Martínez-Ortiz, C. Serna, E.I. Rogers, J.G. Limon-Petersen, N.V. Rees, R.G. Compton

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)

Abstract

Rigorous and approximate analytical expressions are deduced for Differential Pulse Voltammetry at spherical electrodes of any size, including microelectrodes, when the electrogenerated species is soluble in the electrolytic solution. From these, we examine the utility of DPV for the determination of diffusion coefficients and formal potentials, establishing the optimum conditions for this purpose. The experimental validation of the theoretical results is reported for mercury microelectrodes of ca. 50 and 10 μm diameters both in aqueous and ionic liquid media.
Original languageEnglish
Pages (from-to)73-81
Number of pages9
JournalJournal of Electroanalytical Chemistry
Volume634
Issue number2
DOIs
Publication statusPublished - 15 Sep 2009

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