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Copper-copper(II) sulfate electrode
The Copper-copper(II) sulfate electrode is a type of reference electrode, based on the redox reaction with participation of the metal (copper) and its salt - copper(II) sulfate. It is used for measuring electrochemical potential and is the most commonly used reference electrode for testing cathodic protection corrosion control systems.
Additional recommended knowledge
The corresponding equation can be presented as follow:
This reaction characterized by fast electrode kinetics, meaning that a sufficiently high current can be passed through the electrode with the 100% efficiency of the redox reaction (dissolution of the metal or cathodic deposition of the copper-ions).
Commercial reference electrodes consist of a plastic tube holding the copper rod and saturated solution of copper sulfate. A porous plug on one end allows contact with the copper sulfate electrolyte. The copper rod protrudes out the tube. A voltmeter negative lead is connected to the copper rod.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Copper-copper(II)_sulfate_electrode". A list of authors is available in Wikipedia.|