#Platinum notes 4 best settings software

The electrodes can be seen in figure 1.įigure 1: Materials used for a 3 electrode EIS experiment. Note: A portion of the bare metal must be exposed in order to make an electrical connection to the working electrode. More electrode setups can be found here.įor this tutorial a coated aluminum plate will be used for the working electrode, a graphite rod will be used as the counter electrode, and a Gamry SCE will be used as the reference. In this configuration there is a working electrode (your material sample), counter electrode (graphite and platinum are commonly utilized), and an independent reference electrode- Saturated Calomel Electrodes (SCE) and Silver/Silver Chloride (Ag/AgCl) are most common. Electrode and Cell SetupĮIS is most commonly run in 3 electrode mode. This assumes the instrument is calibrated.

#Platinum notes 4 best settings software

NOTE: This guide begins after the initial potentiostat setup and software installation. With a basic understanding of the system it can be known if the potentiostat will be able to gather the desired information, and if the data collected meets accuracy requirements. Knowledge of the electrochemical system being investigated is also useful before beginning.

This guide will focus on the application of the EIS technique for analyzing the corrosion performance of coated aluminum panel. EIS has far reaching applications including coatings, batteries, fuel cells, photovoltaics, sensors, and biochemistry.

The theory behind EIS is more complex than DC techniques, so it’s advised to have a basic understanding of the underlying principles before beginning. EIS differs from direct current (DC) techniques in that it allows the study of capacitive, inductive, and diffusion processes taking place in the electrochemical cell. The AC signal is scanned over a wide range of frequencies to generate an impedance spectrum for the electrochemical cell under test. Overview of Electrochemical Impedance SpectroscopyĮlectrochemical impedance spectroscopy (EIS) is a powerful technique that utilizes a small amplitude, alternating current (AC) signal to probe the impedance characteristics of a cell. Getting Started With Your First Experiment Electrochemical Impedance Techniques