Physics:Working electrode

Short description: Electrode on which an electrochemical reaction occurs

In electrochemistry, the working electrode is the electrode in an electrochemical system on which the reaction of interest is occurring.^[1]^[2]^[3] The working electrode is often used in conjunction with an auxiliary electrode, and a reference electrode in a three-electrode system. Depending on whether the reaction on the electrode is a reduction or an oxidation, the working electrode is called cathodic or anodic, respectively. Common working electrodes can consist of materials ranging from inert metals such as gold or platinum, to inert carbon such as glassy carbon, boron-doped diamond^[4] or pyrolytic carbon, and mercury drop and film electrodes.^[5] Chemically modified electrodes are employed for the analysis of both organic and inorganic samples.

Special types

↑ Kissinger, Peter; William R. Heineman (1996-01-23). Laboratory Techniques in Electroanalytical Chemistry, Second Edition, Revised and Expanded (2 ed.). CRC. ISBN 978-0-8247-9445-3.
↑ Bard, Allen J.; Larry R. Faulkner (2000-12-18). Electrochemical Methods: Fundamentals and Applications (2 ed.). Wiley. ISBN 978-0-471-04372-0.
↑ Zoski, Cynthia G. (2007). Handbook of Electrochemistry. Amsterdam: Elsevier. ISBN 978-0-444-51958-0.
↑ Irkham; Watanabe, T.; Fiorani, A.; Valenti, G.; Paolucci, F.; Einaga, Y. (2016). "Co-reactant-on-Demand ECL: Electrogenerated Chemiluminescence by the in Situ Production of S2O82− at Boron-Doped Diamond Electrodes". Faraday Discuss 138 (48): 15636–15641. doi:10.1021/jacs.6b09020. PMID 27934028.
↑ Heard, D. M.; Lennox, A.J.J. (2020-07-06). "Electrode Materials in Modern Organic Electrochemistry.". Angewandte Chemie International Edition 59 (43): 18866-18884. doi:10.1002/anie.202005745. PMID 32633073.

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v t e Electroanalytical methods
Techniques	Adsorptive stripping voltammetry Amperometric titration Anodic stripping voltammetry Bulk electrolysis Cathodic stripping voltammetry Chronoamperometry Coulometry Cyclic voltammetry Differential pulse voltammetry Electrogravimetry Hydrodynamic technique Linear sweep voltammetry Normal pulse voltammetry Polarography Potentiometry Rotated electrode voltammetry Squarewave voltammetry Staircase voltammetry Voltammetry
Instrumentation	Amperostat Auxiliary electrode Dropping mercury electrode Electrode Electrolytic cell Galvanic cell Hanging mercury drop electrode Ion selective electrode Mercury coulometer pH meter Potentiostat Reference electrode Rotating disk electrode Rotating ring-disk electrode Salt bridge Saturated calomel electrode Silver chloride electrode Standard hydrogen electrode Ultramicroelectrode Voltameter Working electrode
Theory	Activity coefficient Butler–Volmer equation Cell notation Cottrell equation Debye–Hückel equation Double layer Faraday's laws of electrolysis Half-reaction Ionic strength Nernst equation
Analytical Chemistry