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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 »

EIS: Potentiostatic or Galvanostatic Mode?

Posted by gamry on June 8, 2017

IntroductionElectrochemical 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 gamry on August 25, 2016

Purpose of This NoteThis Technical Note outlines how waveform signals are generated with a potentiostat.

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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

IntroductionWith 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…

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Use of Transmission Lines for Electrochemical Impedance Spectroscopy

Posted by gamry on October 20, 2014

Theory and Application of Transmission Line Models to High Surface Area ElectrodesPurpose of This NoteThis 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

Accurate EISGamry Instruments prides itself on performing accurate EIS. We publish an Accuracy Contour Plot (ACP) for every instrument we sell.

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Getting Started With Your First Experiment

Posted by gamry on July 28, 2014

Electrochemical Impedance Techniques
Potentiostatic EIS

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

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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. The theory of Raman spectroscopy and the effect of light on matter are explained.

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Verification of Low-impedance EIS Using a 1 mΩ Resistor

Posted by gamry on August 2, 2013

IntroductionElectrochemical Impedance Spectroscopy (EIS) is a powerful way to gain information about electrochemical systems, often applied to new electrochemical devices used for energy-conversion and storage (ECS), including batteries, fuel cells,…

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Create Your Own Components for EIS Modeling

Posted by gamry on August 2, 2013

IntroductionWith Gamry’s Echem Analyst and Model Editor you can create all sorts of EIS models, provided they are made up of series and parallel combinations of eight different basic circuit…

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OptiEIS™: A Multisine Implementation

Posted by gamry on August 2, 2013

IntroductionElectrochemical Impedance Spectroscopy (EIS) has become a standard technique in the electrochemists’ toolbox providing detailed information over very wide time scales and amplitudes.

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