What is Electrochemical Impedance Spectroscopy (EIS) and How Does it Work?

[@giuseppemisia5578]

Brief and simple, and the example of the orchestra finally made it clear for me as a total beginner! Thanks!

[@Pineresearch]

EIS is a very complicated subject, so we are really glad this video was helpful!

[@kevinha3192]

Clear, simple, and make absolute senses. I just want to say thank you to the dude who explaining this !!!Great job man !!!

[@Pineresearch]

You are very welcome! Happy you enjoyed the video :)

[@HelminiJayarathne]

I have been doing EIS this week and wanted a clear explanation of EIS basics. This video helped me understand and interpret my data. Thank you very much! Great help!

[@Pineresearch]

We're really glad it was helpful!

[@priyankaroy6804]

Can you please suggest some open source eis data fitting software fit for biosensing application.

[@yabooaion]

The best EIS intro video I saw till now. It really helped me to get an overview over EIS and its application. Much thanks and Greetings from Germany!

[@Pineresearch]

Glad it was helpful!

[@homayoonsoleimani5832]

One of the best educational videos I have ever seen on KZbin!

[@Pineresearch]

Thank you so much! Stay tuned for more educational electrochemistry videos from us :)

[@rupertkeller2074]

the best video on that topic so far. Thank you!

[@Pineresearch]

We are glad you liked the video! :)

[@aakashnarayanan8993]

Thank you so much for this wonderful explanation. I've been trying to make sense of nyquist plots for some time now and none of the websites I visited made it this simple and clear.

[@Pineresearch]

We appreciate the comment, glad it was helpful for you! I think making sense of EIS data is a lifelong task, to be honest I'm not sure it ever completely makes sense! :D

[@fransiscusmichaelcahyalie1637]

You have no idea how your videos helped me with my studies! Thanks a lot!

[@Pineresearch]

Happy to hear that! Stay tuned for more!!

[@smritisngh]

I am very grateful for your easy and simple explanation for such a important technique.

[@Pineresearch]

Glad you enjoyed it!!

[@rajanneupane3591]

WOW! The best video on EIS by a mile and a half!

[@Pineresearch]

Thank you! We are really glad you enjoyed the video and it was helpful!

[@bear-jw8fi]

Thank you for your explanation! As a beginner in this field, i really need this kind of videos to help me understand this field.

[@Pineresearch]

You're very welcome!

[@dimple7267]

Best overview of EIS I ever saw. Better than my university professor's

[@Pineresearch]

We are glad you liked it! I would also say that university professors can get caught up in the weeds of the technique, but we prefer a simpler and more accessible approach to the technique :)

[@dimple7267]

@@Pineresearch Speaker is very well learned about the technique

[@Pineresearch]

@@dimple7267 Thank you! I did a lot of preparation for the video and consulted several colleagues to make sure the content was accurate :)

[@Mrnoth3m]

Extremely eloquent and helpful video

[@Pineresearch]

Glad you liked it

[@wenwuxu6300]

This is an amazing video for getting the first look at EIS. Thank you very much for sharing!!!! I love it.

[@Pineresearch]

Glad you enjoyed it!

[@akhileshkumar-mu8gb]

Thanks for such an explanation in simple words with accurate analogies.

[@Pineresearch]

Thank you, glad you enjoyed it!

[@HALOO_ANTON]

This is so complex but your explanation helps me a lot to understand it

[@Pineresearch]

EIS is probably one of the most complex areas of electrochemistry, and electrochemistry itself is pretty complex. We tried to make the introduction to the field as easy to understand as possible. But it will take some time and experimentation to really understand it. Thanks for watching!

[@nikdhabarde]

This is indeed one of the best videos simplifying EIS concepts.

[@Pineresearch]

Thank you Nikhil! I appreciate the comment. It was good seeing you at MRS :)

[@salimrafik9568]

It was 12 minutes of pleasure, simple clear and easy explanation of eis. Please keep entertaining us with electrochemical technics especially those applied for electrocatalysis and rechargeable batteries…

[@Pineresearch]

Thanks, will do!

[@mayurpalshikar3204]

clear and crisp explanation, Thanks for video!

[@Pineresearch]

Glad you enjoyed it!

[@michaeloshea1765]

Perfect, clear explanation. Many thanks!

[@Pineresearch]

Glad it was helpful!

[@chandrabeixon7299]

the best explanation about EIS in yt fr

[@Pineresearch]

Thank you!!

[@aaclassroom]

It was such a simple and excellent explanation in a 12-minute video. Many thanks.

[@Pineresearch]

Glad it was helpful!

[@BikingWithCraig]

As a total beginner on the subject this was a great intro - well delivered and really enjoyable. That you :)

[@Pineresearch]

Thank you, we appreciate the comment and glad you enjoyed the video!

[@sreyabnambiar150]

Thank you so much. These topics are so crucial for electrochemical research but seldom explained to this level of clarity.Waiting for more such educational videos..

[@Pineresearch]

We are glad you enjoyed the video. Yes, we're looking forward to making more videos like this, so stay tuned!

[@sreyabnambiar150]

@@Pineresearch could you please do videos on ionic conductivity,arrhenius plot and other important topics on solid electrolytes

[@Pineresearch]

@@sreyabnambiar150 I'll make the effort. There are a lot of electrochemistry topics we want to cover. So I'll add these to the list. Thank you!

[@sreyabnambiar150]

@@Pineresearch Thank you soo much and wish you good luck for your future endeavours

[@Pineresearch]

@@sreyabnambiar150 Thank you! You too!

[@touahriayoucef8167]

you deserve all my appreciation thanks

[@Pineresearch]

Hahaha, you are too kind. Thank you!

[@touahriayoucef8167]

​@@Pineresearch hhhh thank you for your comment, but I benefited a lot from your explanations

[@PhysicsNitDurgapurMG]

Excellent, concise introductory video for beginners. :) Thanks

[@Pineresearch]

Glad you enjoyed it, thank you for the comment!

[@ankitapaul5163]

You just saved my life!! Thank you 🥺

[@Pineresearch]

I'm so glad it the video was helpful. I never considered electrochemist as a life saving career :)

[@Thiyagadhayalan]

simple yet very clear explanation, thanks.

[@Pineresearch]

You're very welcome!!

[@tiddlywinks497]

This is fantastic! Looking into EDL and had no idea how EIS worked before this

[@Pineresearch]

Great, thanks so much for your comment and I'm glad it was helpful!

[@danidelatierra]

great video! watched several videos before this and didnt understand until now :)

[@Pineresearch]

We're really glad that this helped. EIS is certainly a complicated subject, and we tried to make it as simple as possible.

[@lahirusandaruwan5360]

This video was really helpful for a good understanding about EIS. Thank you.

[@Pineresearch]

You're very welcome!

[@BabyUwaTVChannel]

Thank you for this lucid explanation!

[@Pineresearch]

You are very welcome!

[@ammyazr1001]

I can just say , you and your explanations are perfect!

[@Pineresearch]

Thank you so much! Glad you liked it!

[@shunmuganathan.s4411]

Thank you so much for breaking down such a complex technique!! I definitely owe you so much, man.

[@Pineresearch]

glad you enjoyed the video! Always happy to help!

[@PralayMaity-z4d]

Really impressive....Easy & simple explanation ...Salute to your effort..

[@Pineresearch]

Much appreciated!

[@AcrosstheNanoverse]

Great explanation! I loved the analogy to an orchestra! Looking forward to more videos on this topic :D

[@Pineresearch]

Glad you liked it!

[@marcmullenbach5786]

Amazing video, great analogies. Just hands-on knowledge!

[@Pineresearch]

Thank you kindly!

[@mulugetaale6604]

That is perfect for a beginner. Thank you!

[@Pineresearch]

Glad you enjoyed it!

[@dipint4913]

Thank you. Crystal and clear explanation.

[@Pineresearch]

Glad it was helpful!!

[@ramachandrankRam]

clear explanation , Easy to understand thank you

[@Pineresearch]

You are welcome!

[@amenehmohammadnezhad7889]

Thanks for such a great description of EIS

[@Pineresearch]

Glad you liked it!!

[@alicanakguney]

harika bir video. bir hadise ancak bu kadar güzel anlatılabilirdi. congratulation ❤

[@Pineresearch]

Needed to use google translate for this. Thank you, I'm glad you enjoyed it

[@Chimbleton]

Wow this was amazing, I'm so grateful for your explanation. This was so clear and concise. I have tried to understand through articles though they were very complicated, this however was so straight forward. Thank you so much!

[@Pineresearch]

Yeah, there are a lot of complicated articles and books on EIS. I'm glad the video was helpful!

[@sirengokeith8716]

Great piece of presentation

[@Pineresearch]

Glad you liked it!

[@LakshanPreshann]

Perfect explanation for new beginners.. thank you..

[@Pineresearch]

We appreciate your comment and watching our video! If you have more questions you want to ask us, feel free to join one of our Livestreams on Fridays at 1pm EST, we try to answer electrochemistry questions every week.

[@nikoselbiropoulos512]

really congrats from the bottom of my heart

[@Pineresearch]

Thank you very much!

[@pawanbohane604]

Thank you for such amazing explanation of EIS

[@Pineresearch]

You're very welcome, glad you enjoyed it!

[@elmamathew2588]

Lovely explanation. Thank you so much. Kindly release more videos like this about Cyclic voltammetry and GCD

[@Pineresearch]

Glad you enjoyed the video. I definitely plan on making more videos about these different electrochemistry topics :) . Stay tuned!

[@rajashreebortamuly2901]

Thank you so much for the great explanation

[@Pineresearch]

You are welcome! Glad it was helpful!

[@danielturner7743]

You made that really easy to understand, cheers. I can't wait to get stuck in to some serious characterisation :)

[@Pineresearch]

I'm happy to hear that. We've got some Advanced EIS Webinars and circuit fitting KZbin videos that might be helpful for whatever system you are looking to characterize.

[@jeksu2]

Well made video! Took notes!

[@Pineresearch]

Glad it was helpful!

[@hamza6766]

May you live long gentleman! How simply and concisely you described it. Keep it up! 😊 100/100 for you! If I could go more than 100 then I would have gone further

[@Pineresearch]

Awwwww thank you so much for the very kind words :)

[@shriyzfr15]

Amazing explanation... This will be very helpful for my research project..

[@Pineresearch]

Glad it was helpful!

[@zehaoyang5533]

Thank you! this video helps me to know EIS

[@Pineresearch]

Glad you enjoyed it!

[@VIVEKKUMAR-is3bo]

Thanks for this easly explanation about EIS❤

[@Pineresearch]

Thank you liked it!

[@josehumbertodiasdasilva2678]

Excellent explanation! Thank you!

[@Pineresearch]

Of course! I'm glad you liked it!

[@payam1597]

Wonderful. Thank you!

[@Pineresearch]

Glad you enjoyed it!

[@JitendraKumarMeenaphc]

thank you it's helpful in my post graduation project 🙏

[@Pineresearch]

We are happy it's helping you for your post graduation project. EIS is challenging to learn.

[@EatMeetRepeat]

Thank you so much for such a video full of knowledge and explain in such a simple way. I hope to see more videos in this regard specially on EIS of ceramic electrolyte and how EIS help us to find bulk resistance, grains and grain boundaries resistance, charge transfer resistance and warber. and also stay connected with you guys.

[@Pineresearch]

Absolutely! Glad you enjoyed the video!

[@thirukumaran3141]

This is really useful for me, nice explanation..

[@Pineresearch]

Glad it was helpful!

[@lysu8060]

awesome , informative and impressive explanation!Thanks for sharing--(I''m a che student from asia)

[@Pineresearch]

We are very glad that you enjoyed the video and thought it was helpful. We are based in the US, so we are glad we provide some transcontinental help :)

[@LuizEnger]

Thanks for the video! Would really appreciate another one going deep into circuit fitting.

[@Pineresearch]

Thank you Luiz! Actually, Dr. Neil Spinner with Pine Research does a somewhat regular advance EIS webinar that covers circuit fitting in more detail. There a few KZbin videos from us on the subject, like EIS of a perovskite film kzbin.info/www/bejne/rZrboWamgNt-g8U and EIS of a PEM water electrolyzer kzbin.info/www/bejne/mpOYqa2rga-BarM. We've got a few more in the works, but follow us on twitter and check out our website for the next time we do an advanced EIS circuit fitting webinar.

[@LuizEnger]

@@Pineresearch Thanks a lot! I'll definitely look into those!

[@hritikkable]

Appreciate the details and specificity 💯🙌🏼

[@Pineresearch]

Happy to help!

[@deimergomezmejia6542]

excellent explanation!

[@Pineresearch]

Thank you!! Glad you enjoyed it

[@snehamathivanan7679]

You are a great teacher! 👌🙂

[@Pineresearch]

Thank you! 😃

[@gaspargascon9783]

Super well explained

[@Pineresearch]

Thank you Gaspar! EIS is complicated and we wanted to make it as simple as possible.

[@rileywells3045]

Excellent video, thanks a lot!

[@Pineresearch]

You are welcome! We've glad you liked it!

[@aaronessilfie2588]

Great introductory video

[@Pineresearch]

Thank you!

[@simrandeepkaur9414]

Beautifully explained 🙏🏻❤️

[@Pineresearch]

Glad you enjoyed it! :)

[@mdabdussalamshaik9487]

Thank u for providing such a knowledgeable and important video in free of cost. The way you explained everything, is really comprehensible. NeverthIess, I have one question regarding this EIS, I hope You will address my doubt. I have seen a video in you tube where Mott Schottkey plot was done from EIS data. I have used the same method to plot Mott Schottkey from EIS, but in EIS data, no potential data column was given, which is required to plot Mott Schottkey, instead a frequency column was given. I want to know if you have any idea how EIS data can be used to plot Mott Schottkey. Thank u

[@Pineresearch]

Thank you for your kind words. I'm no expert at Mott-Schottky, my colleague Dr. Neil Spinner prepared the advanced EIS webinar on the topic. But you are correct, Mott-Schottky requires a column of potential data as well to perform the analysis. What that means is you will need to perform EIS experiments centered around multiple potentials. So it's a fairly long experiment. Does that make sense?

[@carlienovak2336]

This was very helpful, thank you!

[@Pineresearch]

We are glad that you liked the video!

[@anandkumartiwari5864]

Excellent presentation and content

[@Pineresearch]

Thank you!

[@aymenbenmakhlouf3680]

great explanation,,, thanks

[@Pineresearch]

Glad it was helpful!

[@fencros7y919]

Thank you for your good explanation. Recently I was figuring out how to use EIS to calculate the diffusion coefficient. In many literatures the researchers just simply carried out a EIS test and then used the equation D=(R^2*T^2)/(2A^2*n^4*F^4*C^2*σ^2). I feel confused about what is semi-infinite diffusion, the physical meaning of warburg coefficient, in what circumstances can I use the equation. What is the differences between soluble analyte (analyte diffusion) and solid analyte (counter ion diffusion)? Maybe too many questions haha.

[@Pineresearch]

I completely understand. These are great questions, and might be a bit too much to address in a single KZbin comment. Shameless plug aside, Pine Research is offering a free EIS webinar series pineresearch.com/eis-webinar-series-registration/ it's run by my colleague Dr. Neil Spinner, and I think you'd get a lot out of it. To address questions about warburg coefficients, semi-infinite diffusion, etc he will probably talk about those in the later parts of the series (part 3, 4, and 5). However, I would encourage you to attend the whole thing. I hope this was helpful.

[@onurekmekci5429]

Great explanation. Thank you for your sharing.

[@Pineresearch]

Thank you for the comment, and we appreciate you watching our content!

[@reuben2504]

Thanks! really well explained

[@Pineresearch]

We are glad it was helpful!

[@OlegFedyna]

Amazing video, understood everything!

[@Pineresearch]

Glad it helped!

[@TheBachela]

Great video. Keep them coming bro!

[@Pineresearch]

Thank you! Yes, I've got another one in the works. Stay tuned :)

[@amyknodel143]

this is so helpful thank you!!

[@Pineresearch]

You're so welcome!

[@mattbailey8599]

Great video, thanks

[@Pineresearch]

Glad you liked it!

[@MikeEnergy_]

Really great video !

[@Pineresearch]

So glad you liked it!

[@antoniomartino3323]

Life saver, Thanks!

[@Pineresearch]

Awesome! I'm glad the video was helpful :)

[@50LOT1]

I need video explaining how to use eis and which test I should select. I have like 8 option in my system. I'm confused and also how u determine if the same has high or low corrosion resistant from z real zcimag graph. I saw all your video but non explain what is the data mean in that I get. Thank you so much

[@Pineresearch]

I'm glad you enjoyed the video. It's one thing to understand EIS conceptually, it's another to do it on a real system and understand what it means. We have a bunch of other videos on EIS that go into more details, for example, our video on EIS of coated steel corrosion kzbin.info/www/bejne/haeUfH56jLGkZtU

[@islamzerrougui7718]

I have questions please, what is the point of doing model for EIS ? Do the circuit represent the electrochemical reaction so basically we can use it as model for our system????

[@Pineresearch]

Your exactly right. EIS data by itself isn't very useful, it's only useful when you use it to model an electrochemical system, using the circuit elements as parts of your system.

[@jonathansonnenschirm8535]

great video! thanks a lot!

[@Pineresearch]

We're glad you enjoyed it!

[@leilapani3488]

thank you so much for such great job , please continue it, if you can please explain about warburg and the pseudo-capacitive behaviour in circuit.

[@Pineresearch]

Hello Leila, we are glad you enjoyed the video. Describing warburg and pseudo-capacitive behavior is probably a topic for another lengthy video. But in short, a warburg element is used for the impedance associated with diffusion, which one can observe with the 45 degree tail on the Nyquist plot in the low frequency region. Constant phase elements (CPE's) are circuit elements used to describe pseudo-capacitive behavior. A capacitor is two charged parallel plates separated by a dielectric. Sometimes in electrochemical systems you'll get things that are almost like a capacitor, but not entirely...because it's electrochemistry :D . So it's hard to circuit fit an electrochemical system to an ideal capacitor because almost nothing in electrochemistry is ideal, so we use a CPE instead. I hope this was helpful. Stay tuned for more!

[@ayushisinghal1379]

thank you, it was a nice presentation. I have a doubt why two phase change occur

[@Pineresearch]

I'm glad you enjoyed the presentation. What do you mean by "doubt two phase change occur"?

[@ayushisinghal1379]

@@Pineresearch in the Nyquist plot, I am getting two semi circles. what does it mean?

[@Pineresearch]

@@ayushisinghal1379 Hello Ayushi. Two semi circles means that you have two Randles circuits (resistor and capacitor in parallel) in series. Physically, your electrochemical system has at least two interfaces. Does this make sense? We have free circuit simulation software you can download off our website pineresearch.com/shop/kb/knowledge-category/downloads/ You just need to create an account, but then you can download AfterMath software and under the Analysis/Tools select circuit simulation. You can then see what the Nyquist plot with two Randles circuits in series look like and how the two semi-circles change. I hope this helps.

[@ayushisinghal1379]

@@Pineresearch it is quite complicated but thank you

[@Pineresearch]

@@ayushisinghal1379 Another resource that might help is our knowledgebase article pineresearch.com/shop/kb/theory/eis-theory/eis-basics/ Section 3 in particular goes into circuit fitting and the Randles (RC) circuit. The article only describes the simple case of one semi-circle however. If you have two RC circuits in series you would get two semi-circles, using the same logic described for the one semi-circle case.

[@jiangluo6894]

What if I want to learn deeper about EIS, do you have any recommendations for videos?

[@Pineresearch]

We have a bunch of advanced EIS videos from our webinars. I would also recommend checking out our free webinars we offer. We are actually offering a 5-part EIS webinar starting February 2nd. pineresearch.com/webinar-registration/ This would give you a deeper dive into EIS.

[@pragatipatil9308]

Very helpful!!!

[@Pineresearch]

Thank you!!

[@nessrineakrour9083]

It's very helpful thank you so much

[@Pineresearch]

Most welcome 😊

[@calvinms7503]

Thank you!

[@Pineresearch]

You're welcome!

[@dadangramadhan7727]

thank you sir :) that's wonderful explanation :)

[@Pineresearch]

We're glad you liked it! :)

[@danielebellisario9235]

really thanks!

[@Pineresearch]

You're welcome!

[@prakritithakur7302]

Excellent video 👏👏

[@Pineresearch]

Thank you!!

[@AbdolazimHasseli]

Thank you.

[@Pineresearch]

You're welcome! Glad you liked it.

[@sudipta5332]

Hello sir, we perform EIS experiments on our own potentiostate (CH instrument). Is your webinar going to be helpful for our EIS data analysis or is that solely for pine research instruments ?

[@Pineresearch]

Out 5-part EIS webinar series is general for EIS and can be useful for anybody trying to learn EIS regardless of the potentiostat they use. For parts of the webinar that go over circuit fitting, we will be using Pine Research's AfterMath software to perform the circuit fitting. But you can use other software to perform circuit fitting. I hope this was helpful.

[@sudipta5332]

@@Pineresearch thank you so much

[@S.K-b4n]

Really nice

[@Pineresearch]

Thank you! Cheers!

[@PaulGaurav]

great class.

[@Pineresearch]

Glad you enjoyed it!!

[@MohdArhamKhan-c7o]

Its a very good explanation but can you please elaborate about why in Nyquist Plot the value Zimaginary is in negative scale??

[@Pineresearch]

Plotting negative Zimaginary is mostly a convenience thing. For most systems the imaginary impedance is negative, so we would be able to plot data in the 1st quadrant rather than the 3rd in a graph. But fundamentally, negative imaginary impedance comes from capacitive processes, the impedance of a capacitor is -j/wC. So the negative sign is just part of the equation.

[@priyankaroy6804]

Thank you for your wonderful presentation. Can you please suggest some open source eis data fitting software fit for biosensing application

[@Pineresearch]

Pine Research's AfterMath software is free to download (you just need to make a free account) and it has EIS circuit fitting. We also have some tutorials on circuit fitting on our KZbin channel. pineresearch.com/shop/kb/knowledge-category/software/