Current Distribution at the Rotating Ring‐Disk Electrode

Abstract

The digital simulation method is used to calculate the current densities at both the ring and disk surfaces of a ring‐disk electrode when the two surfaces are at the same potential. Simulated and experimental results show that the current density at the ring is nonuniform and measurably different from that at the disk electrode, even if the current density at the disk is assumed to be uniform. In addition, a technique is presented which allows the determination of the simulation representations of the electrode radii from experimental data.