Abstract
In a.c. voltammetry, a programmed electrical potential—a linear ramp modulated by a sine wave of frequency ω and modest amplitude—is applied to the working electrode of a voltammetric cell. If the electrolyte solution contains a solute that undergoes a reversible electron exchange at the electrode, then the ensuing faradaic current incorporates two aperiodic components, together with a pseudosinusoidal component of every frequency that is an integer multiple of ω. An exact mathematical model is presented that predicts how the time-dependent amplitudes of each of these latter harmonic currents evolve during the experiment. This analytical model, which does not invoke simulation or Fourier transformation, is useful only at early voltammetric times, but a numerical scheme extends the solution to encompass the entire scan. Amazingly, the time-dependent amplitudes of the periodic currents match their semiintegrals in shape.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
