Working Electrode. The working electrode of an electrode system is the electrode, on the surface of which, the analyte is oxidized or reduced (i.e. the electrode at which the electrochemical reaction takes place). The active potential of the working electrode is measured against a standard reference electrode. The reference electrode is essential to accurately measure the potential of the working electrode. The electrode system will also include a counter electrode, which is complimentary to the working electrode and across which the driving potential is applied to activate the electrochemical reaction to achieve the required oxidation or reduction.

Further Information on this Topic can be found in the books of R.P.W. Scott by following the listed links