Abstract

A novel double potential step technique is described. It is based on the concept that the product of an electrode process diffusing away from the surface may react with another potentially electroactive species; the fluxes of the two species are balanced during the first pulse and this leads to a rising i-t response during the second pulse at a potential where only the latter species is electroactive. The experiments have been simulated and the shape and timescale of the transient have been shown to depend on the nature and rate of the chemical reaction. These concepts are tested with three systems.

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