AC voltammetry

https://doi.org/10.1351/goldbook.09130
Voltammetry in which a sinusoidal alternating potential of small amplitude (\(\pu{10 to 50 mV}\)) of constant frequency (\(\pu{10 Hz to 100 kHz}\)) is superimposed on a slowly and linearly varying potential ramp. The resulting alternating current is plotted versus imposed DC potential. The obtained AC voltammogram is peak-shaped.
Notes:
  1. The phase angle between the alternating current and imposed DC potential is measured in the case of AC voltammetry with phase detection.
  2. In cyclic AC voltammetry, a reverse potential scan is added to the usual forward potential scan.

Waveform for AC voltammetry. The applied potential as a function of time is a sinusoidal alternating potential superimposed on a linearly increasing ramp.

Source:
PAC, 2020, 92, 641. (Terminology of Electrochemical Methods of Analysis (IUPAC Recommendations 2019)) on page 669 [Terms] [Paper]
Citation: 'AC voltammetry' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.09130 RIS BibTex EndNote
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