Electrochemical Impedance Spectroscopy


EIS: A Powerful Technique

Electrochemical Impedance Spectroscopy (EIS) is a powerful technique with a broad range of research applications.  Click on a link below to view the Application or Technical Note.


Complete List EIS Application Notes »

Basics of Electrochemical Impedance Spectroscopy

Posted by gamry on April 17, 2018

This tutorial presents an introduction to Electrochemical Impedance Spectroscopy (EIS) theory and has been kept as free from mathematics and electrical theory as possible

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EIS on Curved Electrodes

Posted by gamry on April 3, 2018

The purpose of this Technical Note is to show that you can do EIS using Gamry Instruments’ potentiostats not only on flat samples in electrochemical cells, but also on curved parts not immersed in a liquid medium.

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EIS: Potentiostatic or Galvanostatic Mode?

Posted by gamry on June 8, 2017

Electrochemical Impedance Spectroscopy (EIS) measurements are more often performed in potentiostatic mode than under galvanostatic mode. The reason is partly convention and partly driven by materials.

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Waveform Generation and Frequency Resolution

Posted by Dominik on August 25, 2016

This Technical Note outlines how waveform signals are generated with a potentiostat. Further, the term “frequency resolution” is discussed which is often mentioned in specification sheets for potentiostats.

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Determination of the correct value of Cdl from the impedance results fitted by the commercially available software

Posted by gamry on March 11, 2015

With the introduction of a constant phase element (CPE) as a replacement for the capacity in EIS measurements, most of the experimentally obtained results could be fitted by commercially available software.

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Use of Transmission Lines for Electrochemical Impedance Spectroscopy

Posted by gamry on October 20, 2014

This application note discusses theory and practice of transmission lines.

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How Cabling and Signal Amplitudes Affect EIS Results

Posted by gamry on August 12, 2014

Accuracy Contour Plot (ACP) describe a region of accuracy over a given range of impedances and frequencies under a defined set of conditions.

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Getting Started With Your First Experiment

Posted by gamry on July 28, 2014

Electrochemical impedance spectroscopy (EIS) is a powerful technique that utilizes a small amplitude, alternating current (AC) signal to probe the impedance characteristics of a cell.

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Raman Spectroscopy

Posted by gamry on January 6, 2014

This application note discusses Raman spectroscopy and its combination with electrochemical techniques.

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Low-impedance EIS at its Limits: Gamry Reference 30k Booster

Posted by gamry on August 2, 2013

This Application Note describes measurement of very small impedances using Electrochemical Impedance Spectroscopy (EIS).

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