First in an on-going series of Free Webinars - Basics of EIS presented live on March 26, 2020 hosted by Gamry Instruments and presented by Dr. Jacob Ketter.
Пікірлер: 34
@emmanuelonyekaezeoba63462 жыл бұрын
Very comprehensive.!!Thank you
@ChemistryMdteachesit244 жыл бұрын
this is very instructive and clear my question is what can you tell us about the voltammetric and impedance spectroscopy analyzer?
@gamryinstruments4 жыл бұрын
Hi Meschac. The basics of our instruments, and how they function, can be found here: www.gamry.com/application-notes/instrumentation/potentiostat-fundamentals/ There are various models of instruments we offer to allow for measurements across a very wide impedance range. More information on each model can be found here: www.gamry.com/potentiostats/browse-all-potentiostats/ If you have any other questions, please feel free to email sales@gamry.com or techsupport@gamry.com, and one of our engineers would be happy to help!
@yuzheng49792 жыл бұрын
How can i calculate energy density, electrical conductivity by gamry? in my lab we use 1010e
@loly1987nony3 жыл бұрын
what is the meaning of getting overflow for EIS for corrosion measurement? using Gamry reference 3000
@gamryinstruments3 жыл бұрын
There can be many reasons why an overload may occur during an EIS test. You can send your data and cell setup information to techsupport@gamry.com, and one of our support engineers can provide feedback for your specific experiment.
@andreiacarvalho52713 жыл бұрын
[organic solar cells] Hey guys. Does anyone know how to extract diffusion coefficient, kinetic parameter and electrolyte resistance from EIS measurements in OSCs?
@gamryinstruments3 жыл бұрын
Thanks for your comment. Please contact Dr. Jacob Ketter at JKetter@Gamry.com. Dr. Ketter will be able to discuss your question.
@aad6632 Жыл бұрын
If your KK transform doesn't fit your experimental data how can you change the conditions of your measurement (voltage amplitude....) to improve the fitting? And if it doesn't fit only at low frequencies, does it invalidate the rest of the spectra? In my case it fits the spectra in the high frequency range (which gives the most important information) and deviates later at low frequencies. Thank you in advance.
@simransapra8233 жыл бұрын
why the charge transfer resistance comes high when the electrolyte is EC/DEC(FEC-10%) and lower when the electrolyte is EC:DEC?
@gamryinstruments3 жыл бұрын
It is possible the FEC, which is added to help prevent blocking SEI formation, actually does some sort of blocking itself. This could slow the reaction down. It is also possible SEI is favored, and so the other path that it is pushed to has slower kinetics (and higher ET resistance). This phenomenon is not fully understood. Going to Research Gate may yield responses from the most up-to-date research in this field.
@simransapra8233 жыл бұрын
@@gamryinstruments Thank you
@atttomole Жыл бұрын
How is DC voltage selected when doing EIS? This is rarely discussed when discussing EIS.
@gamryinstruments Жыл бұрын
In many situations, EIS is run without DC polarization. Meaning, the DC polarization is set to 0V vs Eoc (Open Circuit Potential). This is so the spectra can be acquired at steady-state. There can be exceptions in cases of high impedance coatings, driving a fuel cell, etc, but these are less common. If you email techsupport@gamry.com, one of our engineers can discuss how to set a DC potential that is appropriate for your application.
@mafis6532 жыл бұрын
Do you have a video of how to start up a gamry 600 potentiostat?
@gamryinstruments2 жыл бұрын
Thank you for your interest. All videos we currently have available can be found on our web site : www.gamry.com/resources/gamry-product-videos/ There are also Quick Start Guides available for all of our instruments: www.gamry.com/support/documentation-downloads/ --
@mesfinzewdu37163 жыл бұрын
How can i attened the live webinars
@gamryinstruments3 жыл бұрын
There are no new webinars currently scheduled. Here is a link to the Registration Page: www.gamry.com/resources/webinars/ - keep checking as we will be scheduling new Webinars and Live Demos. There is a form on this page to register for the webinar you would be interested in. Thanks for your support of Gamry
@ranjeevparashar3313 жыл бұрын
Why is a plot not drawn between impedance vs applied AC voltage in the EIS study?
@gamryinstruments3 жыл бұрын
There is no valuable information obtained from plotting Impedance vs AC Voltage. The amplitude of the signal is only important in ensuring that you remain in the linear response region for your cell. If you have more questions, please feel free to contact techsupport@gamry.com
@ranjeevparashar3313 жыл бұрын
Thanks a lot. I got it.
@pluransart17953 жыл бұрын
Can you guys add a download link to the slides?
@gamryinstruments3 жыл бұрын
The PDF is available at this link: www.gamry.com/assets/Uploads/BasicsOfEIS.pdf Visit the Video Library on our web site to view videos of all of our "Live" webinars and download the available PDFs of each -- www.gamry.com/resources/gamry-product-videos/
@dineshrani60223 жыл бұрын
@@gamryinstruments thanks
@ranjeevparashar3313 жыл бұрын
Why AC current is employed for EIS studies?
@gamryinstruments3 жыл бұрын
An AC signal is used so that both the real and imaginary components of the overall cell impedance can be measured. This allows for both the resistance and inductance/capacitance to be measured. With a DC signal, only the real impedance can be measured.
@phillac2 жыл бұрын
How did you know, that the value for C is C = 1μF in the simplified circuit?
@gamryinstruments2 жыл бұрын
The EIS dummy cell (also known as the AC dummy cell) we provide with our instruments uses a 1μF capacitor. So it is a known value from the hardware used. If you have additional questions, please reach out to our Technical Support Engineers at techsupport@gamry.com
@phillac2 жыл бұрын
@@gamryinstruments Ah okay, thank you! I thought that I missed something
@physicsarena34703 жыл бұрын
CAN I GET THIS PPT ? PLEASE
@gamryinstruments3 жыл бұрын
Thank you for your interest. Here is a link to the PDF version of this webinar: www.gamry.com/assets/Uploads/BasicsOfEIS.pdf Visit the Video Library of our web site to view videos of all our Webinars and to download the available PDF versions: www.gamry.com/resources/gamry-product-videos/