Fundamental Principles of Organic Electrochemistry: Fundamental Aspects of Electrochemistry Dealing with Organic Molecules - Fundamentals and Applications of Organic Electrochemistry - page 13

Instrumentation for CV, consisting of both the
wave generator and potentiostat in a single
package, is available from a number of
manufactures. The voltammograms obtained
are output to an X-Y recorder or PC.
2.6 Steady-State and
Non-Steady-States Polarization
Curves
A plot of current density against electrode
potential under a set of constant operating
conditions, known as a polarization curve, is the
standard electrochemical technique for
characterizing the electrode reactions [7]. A
steady-state polarization curve describes the
relationship between the electrode potential
and the current density, which is recorded by
holding the electrode potential and recording
the stable current response. Under vigorous
stirring, the stable current response can be also
obtained by potential scanning measurements
and the diffusion limiting current is dependent
on the potential scan rate. The voltammogram
obtained in this case corresponds to the
steady-state polarization curve. A
non-steady-state polarization curve can be
obtained at a rapid potential scan rate in the
absence of any convections. However, even
under still conditions a steady-state
polarization curve may be obtained by using a
slow potential scan since the influence of