Electrochemical Instrumentation

Application Notes on Electrochemical Instrumentation

Potentiostats

Some of the notes below cover potentiostats in general and others are for Gamry Instruments systems specifically.  Click on a link below to download the PDF version of the Application or Technical Note.

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Understanding the Specifications of your Potentiostat

Posted on 21 October 2015

This technical note is intended to help you better understanding the functionality of potentiostats. Various parameters that are typically listed in specification sheets of potentiostats are explained. In addition, it is shown which parameters are more relevant for specific applications and where you should pay attention.

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Measuring the Optical Power of your LED

Posted on 27 February 2015

In order to calculate the efficiency of a solar cell, the optical power of the incident light has to be known. This technical note explains how to measure and calculate the optical power of your light source.

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Calibration of an Au-coated Quartz Crystal

Posted on 13 October 2014

electrode and then oxidize Cu back off using the result to calculate a calibration factor for the crystal.

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Tips and Techniques for Improving Potentiostat Stability

Posted on 16 July 2014

This application note provides several tips and techniques for improving potentiostat stability. Potentiostats can become unstable and improving the stability may require trying several different techniques.

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Measurement of Small Electrochemical Signals

Posted on 15 July 2014

Potentiostats are often required to work near the limits of their measurement ability. The Gamry Instruments Reference 600 can resolve current changes. Measurements of small currents place demands on the instrument, the cell, the cables, and the experimenter. Many of the techniques used in electrochemistry of larger currents must be modified when used to measure pA and fA currents. In many cases, the basic physics of the measurement must be considered.

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Potentiostat Fundamentals

Posted on 2 August 2013

A potentiostat is an electronic instrument that controls the voltage difference between a Working Electrode and a Reference Electrode. Both electrodes are contained in an electrochemical cell. The potentiostat implements this control by injecting current into the cell through an Auxiliary or Counter electrode.

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Faraday Cage: What Is It? How Does It Work?

Posted on 2 August 2013

In Faraday’s studies and experiments regarding charge, magnetism, and their interaction, he found that charge on a conductor only resided on the outer surface.

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Checking the Integrity of a Gamry Cell Cable

Posted on 2 August 2013

Of all the components of a Gamry system, the cell cable is the one that is constantly being flexed and exposed to corrosive environments.

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Changing Potentiostat Speed Settings

Posted on 2 August 2013

This application note describes the software changes that you can make to slow down a Gamry Instruments’ potentiostat. Slowing down the potentiostat can improve its stability.

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Understanding iR Compensation

Posted on 26 July 2013

Some initial background information describes the general issue of iR errors. This application note presumes that you have a basic understanding of potentiostat operation.

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