I am working on Cyclic voltammetry and what is the importance of distance between three-electrode (reference electrode of silver/silver chloride electrodes (Ag/AgCl, a counter electrode of platinum wire and a glassy carbon electrode) and their dimensions.
Anatole Borisov
Ideally, you would have the reference electrode as close as possible to the working electrode to reduce iR drop. Additionally, the surface area of the counter electrode should be much larger (at least twice as large, but more is better) than the working electrode, but can be placed anywhere as long as electrical contact is maintained.
Chapter 3 of Eliaz and Gileadi from Physical Electrochemistry is helpful
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