Electrode made of a solid amalgam of an appropriate metal.
Notes: - Solid amalgam electrodes are electrochemically similar to the hanging mercury drop electrode. Their main advantages are high hydrogen overpotential (similar to liquid mercury); a wide working potential range; the simple mechanical, chemical, and electrochemical regeneration of the surface; a long lifetime; low toxicity of material (comparable with that of dental amalgams); applicability for field measurements; compatibility with flow-through systems; simple construction, without mobile parts; and easy miniaturization.
- Liquid and paste amalgams can also be used.
Source:
PAC, 2020, 92, 641. 'Terminology of Electrochemical Methods of Analysis (IUPAC Recommendations 2019)' on page 659 (https://doi.org/10.1515/pac-2018-0109)