Echem Newsletter - Fall 2017
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New Application Note
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| Introduction to Non-standard Charge-discharge Cycle Tests: Custom Current Profiles |
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Cyclic charge and discharge (CCD) of batteries is a standard cycling test that Gamry Instruments has implemented into our Electrochemical Energy software. We also have an application note that explains how to run CCD with our potentiostats.
In this application note, we consider cycling tests that require more than just constant current, power, or resistance. These tests use a preset current profile to discharge a battery. The current profile is designed to mimic operating conditions that the battery is exposed to in its lifetime. Here we examine the charging and discharging of batteries for electric vehicles, associated with driving cycles such as the EPA Urban Dynamometer Driving Schedule (UDDS). Although we are not testing actual electric-vehicle batteries here, we show results from a standard 18650 Li-ion battery.
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New White Paper...
Getting Started with Electrochemical Corrosion Measurement
Most metallic corrosion occurs via electrochemical reactions at the interface
between the metal and an electrolyte solution. For example, a thin film of moisture
on a metal surface forms the electrolyte for atmospheric corrosion. A second
example is when wet concrete is the electrolyte for reinforcing rod corrosion in
bridges. Although most corrosion takes place in water, corrosion in non-aqueous
systems is not unknown.
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Fall MRS
November 26-December 1, 2017
Boston, Massachusetts
When:
November 26-December 1
Where:
Boston, MA
For more information and to register, please visit Materials Research Society website.
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Reference Electrode Overview and Care
Proper care must be taken to ensure that your electrode continues to take accurate measurements. The tip of the reference electrode is porous glass frit or electro porous KT glass (opaque white). The frit allows ionic transport into the electrode. In order to operate properly the frit must always be kept wet with electrolyte.....