silver electrode

https://doi.org/10.1351/goldbook.09101

Electrode in the form of foil, mesh, wire, rod, tube, powder, pellets, or single crystal of silver.

Note: Ag electrodes were first used in potentiometry for the determination of ClA, BrA, IA, as well as for AgA+ ions, to which they are sensitive.
Source:
PAC, 2020, 92, 641. (Terminology of Electrochemical Methods of Analysis (IUPAC Recommendations 2019)) on page 660 [Terms] [Paper]