The Saul'yev method of digital simulation under derivative boundary conditions

Abstract

Expressions for implicit boundary concentrations in electrochemical digital simulations are developed for use with the Saul'yev method, for chronopotentiometry and quasi-reversible potential-step chronoamperometry. As with the Crank-Nicolson method, derivative boundary conditions cause very poor performance of the Saul'yev schemes unless algorithms for implicit boundary concentrations are applied. With such algorithms, however, some of the Saul'yev schemes are very efficient.