Electrochemistry - Electrochemical Impedance Spectroscopy (EIS) Theory

Рет қаралды 99,481

AMETEK AMT - Princeton Applied Research and Solartron Analytical

Күн бұрын

This webinar covers theoretical basics of Electrochemical Impedance Spectroscopy (EIS). More details can be found in our Application Notes at www.ameteksi.com/library/appli... and www.ameteksi.com/library/appli.... Please send your questions to parsolsr.support@ametek.com
Contents:
Click on the number behind the row to jump directly to that part in the video.
Introduction 0:00
Comparison of DC and AC techniques 0:40
EIS Fundamentals 3:04
Linearity - Butler Volmer Equation 4:58
Valid EIS Measurements 6:50
Why is frequency important? 9:09
Typical elements:
Resistance 10:51
Capacitance and Constant Phase Element 12:17
Inductance 14:30
Diffusion "Warburg Element" 16:32
Path of leas impedance - which way do I go? 17:41
Plotting of results: Bode and Nyquist (Complex Plane) Plots 21:15
Equivalent circuit analysis - building models 22:50
Frequency domain - deconvolution of parallel electrode processes 25:21
Bandwidth of the SYSTEM (potentiostat, cable and cell) 25:53
Effect of boosters on bandwidth 27:13
Points to consider for us 28:25
Advanced EIS testing: Harmonic Analysis 30:44
Advanced EIS testing: Multi-Sine 33:11
Key concepts and summary 34:41

Пікірлер: 57

@JakeKaje 4 жыл бұрын

Great video! We purchased a potentiostat for routine CV and it came with EIS, it is very useful to know we have these extra capabilities!

@brucemastorovich4478 5 жыл бұрын

Fantastic video! Some of the most useful instruction on EIS that I have found yet.

@ametekamt-princetonapplied5482 5 жыл бұрын

Thank you, Bruce! We appreciate the feedback.

@luciadzinza9495 5 жыл бұрын

Very informative, thank you!

@ratiranjansamal6936 3 жыл бұрын

I have done one of my graduation projects on this topic...have my viva exam tomorrow. Thank you for your great help to make my fundamental doubts cleared 💛

@melonsuperound7976 3 жыл бұрын

Thanks for your kindness~!. Helped a lot

@kaanipek4281 7 жыл бұрын

Awsome.... Thanks for your kindly sharing.... I did not expect to find a lesson which containing every piece of EIS analysis. I did not expect such a lesson on KZfaq too... Thanks again. Good Luck.

@shivshankar4271 6 жыл бұрын

Thank you for sharing more helpful information

@ametekamt-princetonapplied5482 6 жыл бұрын

Kaan, Thank you for this feedback. Please suggest any other related topics that you also think may be valuable.

@yixinhu9457 7 жыл бұрын

This is a very helpful video, thanks!

@ametekamt-princetonapplied5482 5 жыл бұрын

Thank you!

@BuK-HumMraanG 4 жыл бұрын

So cool and thank you very much for sharing

@faraheahmed 7 жыл бұрын

Thank you for this!

@ametekamt-princetonapplied5482 5 жыл бұрын

You are very welcome! Thank you for watching!

@sravanthimagunta9673 5 жыл бұрын

Thanks for awesome video.....Very informative and helpful to researchers..

@juliaberlin1918 5 жыл бұрын

Thank you for watching! We are glad you found value in the video.

@ahmadmajed7374 4 жыл бұрын

Thank you very much for your efforts, could you please refer to me how to perform the "Equivalent Circuit Analysis" for the Nyquist plot @22:50

@alzalame 2 жыл бұрын

Very good video . thank you .

@Ferlezh 6 жыл бұрын

Thanks :) This helped a lot

@ametekamt-princetonapplied5482 6 жыл бұрын

You are welcome. Thank you for the comment; feel free to suggest additional topics.

@sadafjavaid3712 4 жыл бұрын

oh thanks a lot sir.....for this awesome lecture.....it just cleared my concepts...

@ametekamt-princetonapplied5482 4 жыл бұрын

Great! Glad we can help!

@iloverice927 6 жыл бұрын

Thank you very much for the video!!!, i learned a lot from it!!!!! nice!!!!!!

@ametekamt-princetonapplied5482 5 жыл бұрын

Thank you for the positive feedback JC. This helps us understand how the community learns more about electrochemical testing and our products.

@rnboni 6 жыл бұрын

Thank you!

@ametekamt-princetonapplied5482 6 жыл бұрын

Rafael, thank you for taking the time to watch and comment.

@mohammadrendra3663 5 жыл бұрын

My nyquist ended up not having a semi circle fit, how can i define this? can someone help me?

@raavila2245 4 жыл бұрын

When you refer to resistance in 23:33, do you mean electrical resistance or ionic resistance? And how do you distinguish between these two processes in a Nyquist plot?

@jorgeomarrios3427 3 жыл бұрын

at 05:50 ... Butler Volmer equation simplifies to I = I0. nFn/RT.... '' with out alpha'' ??? for small overpotencial n...its correct???

@amelmedakene6588 5 жыл бұрын

thank you very much.what is the diference between elctrical impedance spectroscopy and electrochemical impedance spectroscopy?

@ametekamt-princetonapplied5482 5 жыл бұрын

Thank you for the comment. Practically, consider how the test is applied: Electrochemical Impedance Spectroscopy as a study of an electrochemical cell -- electrodes and electrolyte; whereas, Electrical Impedance Spectroscopy as testing of circuit elements or materials.

@joaquingrassi9303 6 жыл бұрын

thanks !

@ametekamt-princetonapplied5482 6 жыл бұрын

We appreciate the comment Joaquin. With the growing popularity of the EIS technique, we wanted to provide this content as a resource for researchers.

@joaquingrassi9303 6 жыл бұрын

great job! keep going forward!

@diegobertuzzi 5 жыл бұрын

Great video. I have a VersaSTAT 3 potentiostat (with EIS available) I am looking for a guide (or manual) to run the Electrochemical Impedance (I am not a specialist)... Does anyone have a recommendation?

@ametekamt-princetonapplied5482 5 жыл бұрын

Diego, Thank you for wanting to learn more about your VersaSTAT3. There are different resources from AMETEK available including additional videos and technical notes at www.ameteksi.com. There, you can also find contacts for our Applications Team that can help with your specific tests.

@mr_wiizy4485 3 жыл бұрын

@@ametekamt-princetonapplied5482 I have the same situation as Diego, I searched everywhere on intro videos to run the analysis and analyze the data. so far no helpful lead

@JoernLoviscach 6 жыл бұрын

A minor typo: Nernstian, not Nernstain. Like Gaussian and Laplacian.

@user-js9ub3dg7h 6 жыл бұрын

beautiful voice

@ametekamt-princetonapplied5482 6 жыл бұрын

Thank you for timing the time to comment.

@keyruserbara6546 6 жыл бұрын

i measure eis for electrode test in a fuel cell.i observed quarter circle not start from 0,0.normal?

@pluronic123 6 жыл бұрын

If the "semi circle" does not start at 0,0 it means that the solution resistance is higher than 0, as expected. The starting point on the X axis (Z_im = 0) is your Z_re, consistent of Solution resistance and connection resistance. When I use 0.1M H2SO4 as electrolyte, the solution resistance in my system is around 30 Ohm. But this value also contains afaik the ohmic resistance of my cables (which are low) and the conductive glass (which is higher than for metals) as well as the solution res. (highest among those)

@keyruserbara6546 6 жыл бұрын

Esat Becco, thank you for your kind reply

@pb48711 4 жыл бұрын

Capacitance is -j/wC, not -1/(jwC).

@markuspfaff3780 7 жыл бұрын

Where can I find the first video, "Electrochemical Theory"?

@ametekamt-princetonapplied5482 7 жыл бұрын

Hi Markus, we're working on it! Just subscribe to our channel and you will be notified once its available. :-)

@jiameih.8064 5 жыл бұрын

The impedance of capacitor should be 1/(jwc) instead of -1/(jwc)...

@pb48711 4 жыл бұрын

Thanks, I expressed it differently by multiplying your correct answer by j/j, which yields the same result.

@maryb6074 5 жыл бұрын

Great video, great information but presented in a boring way! Hope they improve it.

@ametekamt-princetonapplied5482 5 жыл бұрын

Thanks for the feedback. This is a content-driven presentation that aims to consolidate topics often covered in full-day or week-long short courses into a single lecture. We do have other videos in our Library that have speakers on camera.

@raaj2311 5 жыл бұрын

Nice presentation, but your pace of explanation is too fast to follow.

@ametekamt-princetonapplied5482 5 жыл бұрын

Thank you for the comment. We will take this into consideration for our next presentation.

@tamkhong8939 5 жыл бұрын

say too fast. please slow

@ametekamt-princetonapplied5482 5 жыл бұрын

Phan, Thank you for the comment. We will work to improve on future recordings. The Closed Captioning function provides a written text version that has been benefited others with similar preference.

@mYOwngUn 5 жыл бұрын

@@ametekamt-princetonapplied5482 I dont think youre too fast at all. Everything is clear and at the right pace. People can - if they want, reduce the speed in youtube too