Potentiostat / galvanostat / EIS

Potentiostats / galvanostats are designed to conduct electrochemical tests for applications like corrosion, coatings, batteries, general electrochemistry, and more. Electrochemical Impedance Spectroscopy (EIS) is an option for every instrument. This analysis method is used to study corrosion, batteries, photovoltaic systems and in certain life science applicationsOther options include a wide variety of voltage and current boosters.

We offer a wide range of Potentiostat by BioLogic Science Instruments. Our range of products includes single potentiostats / galvanostats – additionally, they can be configured as bipotentiostats and multichannel potentiostats / galvanostats which have up to 16 channels that can measure the electrochemical effects of up to 16 simultaneously.

What is the process by which a potentiostat or galvanostat function?

The basic potentiostat utilizes a three electrode system (2 or 4 electrode connections are also possible). It controls and measures the voltage difference between the working electrode and a reference electrode that has a constant voltage. It determines the flow of the current between the working electrode and the counter electrode (that completes the cell circuit). A galvanostat is an instrument regulates the current of the cell instead of the voltage in the cell.

The electrode used to work could be a metallic surface on where a reaction occurs or – for corrosion measurements – a sample of the corrosion-prone material. In the case of testing batteries the potentiostat is attached directly to the electrodes of the battery.

Electrochemical Impedance Spectrum (EIS) tests enable the user to determine the resistance of charge transfer, double layer capacitance and the ohmic resistance.

Why use a potentiostat / galvanostat / EIS?

Potentiostats are essential to studying chemical reactions, e.g. the study of redox chemistry. Another application is testing of batteries. Potentiostats can also be used to test for electrochemically active compounds (e.g. drugs, toxinsand microbes in solution.

Electrochemical Impedance Spectroscopy (EIS) has numerous uses. It is used to study corrosion, e.g. in reinforced concrete and in electrode kinetics, batteries, double-layer studies photovoltaic, and solid-state electrochemistry systems.

Our potentiostat / galvanostat / EIS systems

Essential to the operation of a galvanostat/potentiostat and other applications, such as electrochemical impedance spectroscopy is the application. All our BioLogic instruments are controlled by the very multi-faceted EC-Lab(r) software. It allows us to provide a range of measurement modesand different options for modular methods, with wait and loop options to design a complex experiment chainThe software can also be used to control multiple potentiostats with an interface that is a single view.

A range of high-quality indicators will enable users to prove the validity of their EIS experiment, particularly with regards to non-stationarity, linearity or noise.

Finally, in contrast to other systems, you can  modify in real-time’, i.e. modify the parameters during an experiment in the event that results don’t match up to expectations.

Examples of applications of potentiostats / galvanostats / EIS

Metallic surfaces could become corrosive when they are in contact with a corrosive solution (mostly acidsic medium). With electrochemical techniques you can analyze the behavior of the material when it is submerged in an corrosive liquidGalvanostats and potentiostats are utilized to characterize the characteristics of metalsTechniques like e.g. electrochemical impedance spectrum (EIS), Linear Polarization Resistance and Tafel Plot experiments are used to understand the behaviour of the metals.

The photovoltaic cell are in abundance these daysSolar energy is important in the national, regional, and local energy production. To enhance the efficiency of such an energy supply, a lot of research is being conductedPhotovoltaic solar cells ‘ characterization can be done using polarization as well as Electrochemical Impedance Spectroscopy techniques, which enable the user to evaluate the efficiency of the cell as well as the develop a mathematical model. The role of electrochemistry into energy fields is currently a hot topic.

Understanding the kinetics and thermodynamics of reactions that occur through an electrode the principal purpose of the fundamental science of electrochemistryGalvanostat EIS are fundamental tools in this field. In this application, DC steady-state methods have been used such as: an cyclic voltammetry method, chronoamperometry timing, chronopotentiometry and chronocoulometry. thermometry, square wavevoltammetry as well as other current-potential techniques.