Non-linear fitting of electrochemical techniques
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Abstract
Data analysis made with non-linear fitting are not very common, a possible cause is the inaccessibility to specialized software that require license as Zview® or DigiElch. Electrochemical techniques are useful for the determination of kinetics, thermodynamic of cells parameters. The non-linear fitting can be made using Solver into a spreadsheet of Microsoft Excel. This paper present two electrochemical techniques as examples of the developed methodology. Values of area and heterogeneous electron transfer rate constant were calculated from chronoamperometry and cyclic voltammetry of hexacyanoferrate(III) onto platinum ultramicroelectrodes.
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