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- Auxiliary_electrode abstract "The Auxiliary electrode, often also called the counter electrode, is an electrode used in a three electrode electrochemical cell for voltammetric analysis or other reactions in which an electrical current is expected to flow. The auxiliary electrode is distinct from the reference electrode, which establishes the electrical potential against which other potentials may be measured, and the working electrode, at which the cell reaction takes place.In a two-electrode system, either a known current or potential is applied between the working and auxiliary electrodes and the other variable may be measured. The auxiliary electrode functions as a cathode whenever the working electrode is operating as an anode and vice versa. The auxiliary electrode often has a surface area much larger than that of the working electrode to ensure that the half-reaction occurring at the auxiliary electrode can occur fast enough so as not to limit the process at the working electrode.When a three electrode cell is used to perform electroanalytical chemistry, the auxiliary electrode, along with the working electrode, provides circuit over which current is either applied or measured. Here, the potential of the auxiliary electrode is usually not measured and is adjusted so as to balance the reaction occurring at the working electrode. This configuration allows the potential of the working electrode to be measured against a known reference electrode without compromising the stability of that reference electrode by passing current over it.The auxiliary electrode may be isolated from the working electrode using a glass frit. Such isolation prevents any byproducts generated at the auxiliary electrode from contaminating the main test solution: for example, if a reduction is being performed at the working electrode in aqueous solution, oxygen may be evolved from the auxiliary electrode. Such isolation is crucial during the bulk electrolysis of a species which exhibits reversible redox behavior.Auxiliary electrodes are often fabricated from electrochemically inert materials such as gold, platinum, or carbon.".
- Auxiliary_electrode wikiPageExternalLink A00535.html.
- Auxiliary_electrode wikiPageExternalLink Potentiostat_Primer.htm.
- Auxiliary_electrode wikiPageID "14171783".
- Auxiliary_electrode wikiPageRevisionID "603445767".
- Auxiliary_electrode hasPhotoCollection Auxiliary_electrode.
- Auxiliary_electrode subject Category:Electroanalytical_chemistry_devices.
- Auxiliary_electrode subject Category:Electrodes.
- Auxiliary_electrode type Artifact100021939.
- Auxiliary_electrode type Conductor103088707.
- Auxiliary_electrode type Device103183080.
- Auxiliary_electrode type ElectroanalyticalChemistryDevices.
- Auxiliary_electrode type Electrode103274796.
- Auxiliary_electrode type Electrodes.
- Auxiliary_electrode type Instrumentality103575240.
- Auxiliary_electrode type Object100002684.
- Auxiliary_electrode type PhysicalEntity100001930.
- Auxiliary_electrode type Whole100003553.
- Auxiliary_electrode comment "The Auxiliary electrode, often also called the counter electrode, is an electrode used in a three electrode electrochemical cell for voltammetric analysis or other reactions in which an electrical current is expected to flow.".
- Auxiliary_electrode label "Auxiliary electrode".
- Auxiliary_electrode label "Elettrodo ausiliario".
- Auxiliary_electrode sameAs Elettrodo_ausiliario.
- Auxiliary_electrode sameAs m.03cws9w.
- Auxiliary_electrode sameAs Q1768785.
- Auxiliary_electrode sameAs Q1768785.
- Auxiliary_electrode sameAs Auxiliary_electrode.
- Auxiliary_electrode wasDerivedFrom Auxiliary_electrode?oldid=603445767.
- Auxiliary_electrode isPrimaryTopicOf Auxiliary_electrode.