Term: rotating disc electrode
https://doi.org/10.1351/goldbook.09124

Definition:
A disc electrode that is embedded in the centre of a cylinder which rotates in solution around the longitudinal cylinder axis.

Notes:
1) The limiting current is given by the Levich equation.
2) The current is directly proportional to the electrode area and the electrode is uniformly accessible.
3) A second annular working electrode may be positioned concentric with the disc to make a rotating ring-disc electrode (RRDE). This arrangement is largely used in mechanistic studies.

Related Term: levich equation (http://doi.org/10.1351/goldbook.09140).
Related Term: electrode (http://doi.org/10.1351/goldbook.09060).

Source: PAC, 2020, 92, 641. 'Terminology of Electrochemical Methods of Analysis (IUPAC Recommendations 2019)' on page 667 (https://doi.org/10.1515/pac-2018-0109)

Citation: 'rotating disc electrode' 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.09124

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