Title: limiting current
Long Title: IUPAC Gold Book - limiting current
DOI: 10.1351/goldbook.L03532
Status: current

Definition
The limiting value of a faradaic current that is approached as the rate of the charge-transfer process is increased by varying the potential. It is independent of the applied potential over a finite range, and is usually evaluated by subtracting the appropriate residual current from the measured total current. A limiting current may have the character of an adsorption, catalytic, diffusion, or kinetic current, and may include a migration current.

Related Terms
- adsorption: https://goldbook.iupac.org//terms/view/A00159
- applied potential: https://goldbook.iupac.org//terms/view/A00424
- catalytic: https://goldbook.iupac.org//terms/view/C00889
- diffusion: https://goldbook.iupac.org//terms/view/D01722
- faradaic current: https://goldbook.iupac.org//terms/view/F02321
- kinetic current: https://goldbook.iupac.org//terms/view/K03399
- migration current: https://goldbook.iupac.org//terms/view/M03921
- residual current: https://goldbook.iupac.org//terms/view/R05311

Sources
- PAC, 1974, 37, 499. 'Electrochemical nomenclature' on page 513 (https://doi.org/10.1351/pac197437040499)
- PAC, 1985, 57, 1491. 'Recommended terms, symbols, and definitions for electroanalytical chemistry (Recommendations 1985)' on page 1497 (https://doi.org/10.1351/pac198557101491)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/L03532/html
- json: https://goldbook.iupac.org/terms/view/L03532/json
- xml: https://goldbook.iupac.org/terms/view/L03532/xml

Citation: Citation: 'limiting current' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.L03532
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Accessed: 2025-12-06T10:09:07+00:00