仪器与硬件

Application Notes on Electrochemical Instrumentation

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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The Value of Stack Mode Measurements

Posted on 11 August 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 on 12 November 2016

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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Calibration of an Au-coated Quartz Crystal

Posted on 1 September 2016

The purpose of this Application Note is to show the reader a simple experiment where we reduce Cu2+ onto an Au electrode and then oxidize Cu back off. We will then use the result to calculate a calibration factor for the crystal. Conversely, we will show you how to calculate the molar mass of the species deposited using a calibration factor.

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Changing Potentiostat Speed Settings

Posted on 16 August 2016

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. These changes presume a working knowledge of Gamry Instruments’ Explain™ scripting language.

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Checking the Integrity of a Gamry Cell Cable

Posted on 1 August 2016

Of all the components of a Gamry system, the Cell Cable is the one that is constantly being flexed and exposed to corrosive environments. This test may take a couple of minutes, but if it identifies a problem, it will be time well-spent.

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Measuring the Optical Power of your LED

Posted on 27 February 2016

When performing experiments with dye solar cells, light is focused on the cell and its current response is measured. The generated current depends strongly on the intensity of the light. 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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Potentiostat Fundamentals

Posted on 2 August 2015

This Application Note may be difficult to follow unless you have some familiarity with electrical terms such as voltage, current, resistance, frequency, and capacitance. If you feel your knowledge in this area is lacking, we suggest review of a very basic electronics or physics book.

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Understanding iR Compensation

Posted on 26 July 2015

This application note presumes that you have a basic understanding of potentiostat operation. If not, please review our Primer on Potentiostats. Experienced potentiostat users should skip the primer and read on.

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Tips and Techniques for Improving Potentiostat Stability

Posted on 15 July 2015

This application note is meant to provide you with several tips and techniques for improving potentiostat stability. Potentiostats can become unstable for several reasons. Improving the stability may require trying several different techniques.

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Troubleshooting Your Gamry Potentiostat

Posted on 13 July 2015

If you suspect that your Gamry Potentiostat is misbehaving, the first step is to calibrate it. The Calibration element on the UDC 4 is a 2000 ohm precision resistor (with some protection components).

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