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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Comprehensive cell impedance measurements using the Interface 5000E potentiostat’s dual electrometer

Posted by gamry on January 18, 2018

In this technical note, we look at the less well-known dual-electrometer feature in our Interface 5000E potentiostat. The dual electrometer allows the user to make a second voltage measurement in addition to the one made by the potentiostat.

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Understanding iR Compensation

Posted by gamry on January 16, 2018

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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The Value of Stack Mode Measurements

Posted by gamry on July 17, 2017

Some researchers want to be able to apply or measure voltages larger than 12 V. One example of the need for larger potentials is battery testing, while another might be CV inside small microfluidic channels.

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Understanding the Specifications of your Potentiostat

Posted by gamry on October 21, 2015

This technical note is intended to help you better understanding the specifications 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 by gamry on February 27, 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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Tips and Techniques for Improving Potentiostat Stability

Posted by gamry on July 16, 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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Potentiostat Fundamentals

Posted by gamry on August 2, 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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Reference Electrodes

Posted by gamry on August 2, 2013

For reliable reference electrode performance, you should assign a “Lab Master” and treat it very, very carefully so it can serve as a standard for your other reference electrodes.

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Measuring the Impedance of Your Reference Electrode

Posted by gamry on August 2, 2013

It's very important for optimum potentiostat performance that the impedance of the Reference Electrode in your cell is low!

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Changing Potentiostat Speed Settings

Posted by gamry on August 2, 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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