Publication: General Explicit Mathematical Solution for the Voltammetry of Nonunity
Stoichiometry Electrode Reactions: Diagnosis criteria in Cyclic Voltammetry
Authors
Gomez-Gil, Jose María ; Laborda Ochando, Eduardo ; Molina, Angela
item.page.secondaryauthor
item.page.director
Publisher
American Chemical Society
publication.page.editor
publication.page.department
DOI
https://doi.org/10.1021/acs.analchem.9b05023
item.page.type
info:eu-repo/semantics/article
Description
Abstract
Electrochemical reactions can effectively follow nonunity stoichiometries as can be found in
the electrochemistry of halides, hydrogen and metal complexes. The voltammetric response of these
systems shows peculiar deviations with respect to the well-described features of the 1:1 stoichiometry.
With the aim of specifying such differences, a rigorous and manageable analytical theory is deduced
for the complete characterization of reversible electrode processes with complex stoichiometry in
cyclic voltammetry (CV) at macroelectrodes. Particularly, the main features of the CV of 2:1, 1:2, 3:1
and 1:3 processes (that is, the peak currents and potentials and the influence of the scan rate and of
the species concentration and diffusion coefficients) are given and compared with the 1:1 case in order
to propose unambiguous diagnostic criteria of the stoichiometry of the electrode reaction. Also,
expressions for the concentration profiles and surface concentrations of the redox species are given.
publication.page.subject
Citation
Analytical chemistry 2020, 92
item.page.embargo
Collections
Ir a Estadísticas
Este ítem está sujeto a una licencia Creative Commons. http://creativecommons.org/licenses/by-nc-nd/4.0/