Theoretical analysis of surface electrode reaction coupled with preceding chemical reaction under conditions of differential square-wave voltammetry

The most recent advancement in electrochemical techniques, derived from square-wave voltammetry (SWV), is known as differential square-wave voltammetry (DSWV). DSWV is introduced as an alternative to SWV to enhance the analytical and kinetic performances of the technique. Particularly for electrode reactions with slow kinetics, DSWV has been reported to improve the voltammetric features of both the forward and backward current components. In this study, we present an initial set of theoretical results obtained by exploring the DSWV as a working technique for investigating a surface electrode mechanism coupled with a reversible preceding chemical reaction. By examining the theoretical data associated with the surface CE reaction scheme, we can gain a comprehensive understanding of how the physical parameters of both the electrode reaction (E) and the preceding chemical reaction (C) can impact the simulated voltammetric outputs in DSWV. Furthermore, this study identifies specific voltammetric features that can be utilized to easily recognize this mechanism under DSWV conditions.

Automated summary

Differential square-wave voltammetry (DSWV) is an electrochemical technique derived from square-wave voltammetry (SWV) that enhances the analytical and kinetic performances. It improves the voltammetric features of both the forward and backward current components, especially for electrode reactions with slow kinetics. This study explores DSWV as a working technique for investigating a surface electrode mechanism coupled with a reversible preceding chemical reaction, providing theoretical results and identifying specific voltammetric features for recognizing this mechanism under DSWV conditions.