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Large Amplitude AC Voltammetry – A Comparison Between Theory and Experiment
Author(s) -
Engblom Sten O.,
Myland Jan C.,
Oldham Keith B.,
Taylor Alicia L.
Publication year - 2001
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/1521-4109(200105)13:8/9<626::aid-elan626>3.0.co;2-j
Subject(s) - voltammetry , cyclic voltammetry , amplitude , signal (programming language) , harmonic , analytical chemistry (journal) , range (aeronautics) , voltage , chemistry , materials science , physics , electrochemistry , electrode , quantum mechanics , computer science , environmental chemistry , composite material , programming language
Recently a published theory advocates the abandonment of the classical limitation that the applied voltage signal, V , in reversible AC voltammetry, be small compared with RT / nF . We have performed experiments designed to test the validity of the theoretical predictions. The AC voltammetric peak heights and areas have been measured as a function of V , for both the fundamental and harmonic frequencies. As well, the shapes of the AC voltammograms have been compared with predictions. In general, experiment agrees well with theory. Though our experiments have not yet addressed a range of concentrations, they do have strong implications for electroanalytical applications of AC voltammetry.