PalmSens Knowledge Base

Cyclic voltammetry

Cyclic Voltammetry (CV), also known as Cyclic Polarization, is the most popular technique for electrochemists. It provides fast information about a system, allows to introduce a time scale and the results are often very visual.

A voltammetry is a technique where the potential is changed and the current is measured. Afterwards the current is plotted versus the potential to create a voltammogram.

A cyclic voltammogram consists of two linear sweeps of the working electrodes potential with two opposed slopes. The slope of the sweeps is equal except for the direction (- / +) and is called Scan Rate. CV is also known as cyclic polarization and could be described as two polarization curves.

The Cyclic Voltammogram is then the plot the two sweep’s current versus the potential.

Related articles

AC Voltammetry (ACV)

In AC Voltammetry a potential scan is made with a superimposed sine wave which has a relatively small amplitude (normally 5 – 10 mV) and a frequency of 10 – 250 Hz. The AC sign...

High-speed linear scan cyclic voltammetry

High-speed linear scan cyclic voltammetry is cyclic voltammetry with a very high scan rate (up to 1×106 V·s−1). At PalmSens, high-speed linear scan cyclic voltammetry is u...

Fast Cyclic Voltammetry (FCV)

Fast Cyclic Voltammetry (FCV) of Fast-scan cyclic voltammetry (FSCV) is cyclic voltammetry with a very high scan rate (up to 1×106 V·s−1).  Application of high scan rate ...

Cyclic Polarization

Cyclic Polarization is an electrochemical technique commonly called Cyclic Voltammetry at PalmSens. It is a known method of demonstrating the presence of a substance in a given li...

Staircase Cyclic Voltammetry

Staircase Cyclic Voltammetry is an electrochemical technique commonly called Cyclic Voltammetry at PalmSens. It is a known method of demonstrating the presence of a substance in a...

Cyclic Voltammetry 4/4- Investigation of Catalytic Processes

This chapter is part of the series ‘Cyclic Voltammetry – the Most Used Technique’. In this final chapter we delve into catalytic processes. 

Cyclic Voltammetry 3/4- What Information Can a CV Provide?

This chapter is part of the series ‘Cyclic Voltammetry – the Most Used Technique’. Here we explain what information can be read from a cyclic voltammogram (CV) and how.

Cyclic Voltammetry 2/4- What is a Cyclic Voltammogram?

This chapter is the first part of the series ‘Cyclic Voltammetry – the Most Used Technique’. This introductory chapter goes into detail on cyclic voltammograms.

Cyclic Voltammetry 1/4- Introduction

Moving from passive potentiometric experiments to potentiostatic experiments by controlling the potential was an important development. However, the step that followed towards potentiodynamic experiments may have been even more important for modern electrochemistry. Potentiodynamic experiments made it easy to collect all the data needed for a plot of current I versus potential E. These plots are called a voltammogram and the technique used for measuring is called voltammetry. In a short period of time the cyclic voltammetry (CV) provides a lot of information and allows kinetic investigations. It is by far the most used technique by PalmSens customers. Experienced electrochemists read quite some information from the shape of a CV.

Cyclic voltammetry

Cyclic voltammetry is a known method of demonstrating the presence of a substance in a given liquid by drawing a graph with a characteristic wavy line. The graph has a typical, recognizable form in which the electron flow (current: i) is measured in Volt against the potential (E).

bg
Compare Products