Potential Step Chronoamperometry at Microdisc Electrodes: Effect of Finite Electrode Kinetics

Potential step chronoamperometry at microdisc electrodes is studied for a simple one electron reduction (A + e- ⇌ B). Simulations are used to explore quantitatively the effect of electrode kinetics on the current-time transients resulting from such measurements. The use of these transients to extrac...

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Hlavní autoři: Belding, SR, Rogers, E, Compton, R
Médium: Journal article
Jazyk:English
Vydáno: 2009
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Shrnutí:Potential step chronoamperometry at microdisc electrodes is studied for a simple one electron reduction (A + e- ⇌ B). Simulations are used to explore quantitatively the effect of electrode kinetics on the current-time transients resulting from such measurements. The use of these transients to extract kinetic parameters, within the Butler-Volmer formulation, is discussed, and the procedure illustrated using the one electron electroreduction of oxygen in n-hexyltriethylammonium bis(trifluoromethanesulfonyl)imide ([N6,2,2,2][NTf2]) as a model experimental system. © 2009 American Chemical Society.