Abstract

A total mass flux recycling model has been used to develop a theory for parallel dual-cylinder (PDC) microelectrodes held at a small constant potential difference in static solutions containing a reversible redox couple for the case of steady-state response. The bilinear transformation of coordinates in diffusion space has been used in the treatment. In the model used it is assumed that lines of mass flux and equiconcentration surfaces established between a microcylindrical anode and cathode are represented by orthogonal circular functions. It is shown that, using a PDC device with a very small interelectrode gap, data obtained from non-stirred ferri/ferrocyanide solutions are in good agreement with predictions of the established theory.

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