Square Wave Voltammetry of Reversible Systems at Ring Microelectrodes. 1. Theoretical Study

Abstract

Ring microelectrodes can be fabricated so as to possess a high perimeter-to-area ratio. Such electrodes have been shown to exhibit high current density, a consequence of convergent diffusion, and should, therefore, display high signal-to-background and high signal-to-noise ratios when employed for analytical voltammetry. A particularly accurate computational method is employed to examine the square wave voltammetry of reversible systems at ring microelectrodes. The method involves a convolution (which for pulse forms of voltammetry reduces to a summation) of the transient current (in response to a large potential step, computed in this work using the integral equation method) and a function of the electrode potential