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Electrochemical cells have at least two electrodes, and those cells used for analysis purposes usually have three electrodes. While various redox reactions occur at each of these electrodes, there is usually one particular electrode in the cell which is the focus of the experiment or analysis in question. This principle electrode is called the working…

A quiescent solution is a liquid solution that is unstirred.

In the field of chemistry, the term reduction is used to describe a process involving a gain of electrons by an atom, ion, or molecule. In a chemical reaction where one reactant is reduced (i.e., gain of electrons), one or more of the other reactants undergo oxidation (i.e., loss of electrons). An example of a…

[notice] By convention, redox half reactions are generally tabulated in textbooks and other reference works as reduction reactions with the oxidized form on the left side and the reduced form on the right side, but it is understood that the reaction may occur in either direction. [/notice]

In the field of chemistry, the term oxidation is used to describe a process involving a loss of electrons by an atom, ion, or molecule. In a chemical reaction where one reactant is oxidized (i.e., loss of electrons), one or more of the other reactants undergo reduction (i.e., gaining electrons). An example of a chemical…

The current observed at a working electrode in an electrochemical experiment is often the sum of the current due to redox reactions occurring at the electrode surface and other currents such as capacitive charging/discharging of the electrode double layer. The portion of the current usually of interest to an electrochemist is the current caused by…

The glossary contains a list of terms commonly used in the electrochemical sciences. If you wish to make changes or additions to this glossary, then be sure to click here to read the instructions. anode cathode electroanalytical cell electrochemical cell electrode rotating electrode working electrode

There is no industry-wide standard for assigning colors to the various electrode connections on a potentiostat. Each manufacturer has settled on a different color coding, and some manufacturers, including Pine, have changed color coding schemes over the years. This article attempts to address this confusing subject and bring together what is presently known about potentiostat…