Pulse voltammetry at the rotating disc electrode

A backwards-implicit-based finite difference simulation of differential pulse voltammetry (DPV) and square wave voltammetry (SWV) at a rotating disc electrode has been developed. Results show that under comparable physical conditions convection independence is reached at lower rotation frequencies when employing SWV than when using DPV. The relative extent of convection and diffusion control of mass transport as the rotation frequency changes is quantified and equations are presented that permit conditions to be identified corresponding to diffusion-only transport.