Intro to Electrochemical Impedance Spectroscopy (EIS) of Batteries
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- เผยแพร่เมื่อ 10 ก.ย. 2024
- A very brief introduction to electrochemical impedance spectroscopy (EIS).
01:35 Let's dive into an actual EIS experiment for context!
02:21 Time for Math!
03:28 Turn a (x,y) graph into (Z', Z") graph! (Nyquist Plot)
03:53 Impedance & Equivalent Circuit Elements Explained
06:02 Nyquist Plot & EIS
07:07 Analyzing Battery Nyquist Plot Data
The paper by Professor Meng’s group referenced is available here:
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I will definitely have to acknowledge you in my PhD thesis for all these wonderful videos that are directly relevant! thanks
Send me a link so I can read your thesis!! Best wishes on your research ⚡️
what is your PhD research topic ?
Teaching is a gift and it comes so naturally to you. Many thanks
Great job. As a Mechanical Engineer in the battery cell space, I haven't been able to get a clear high level grasp of EIS until now! Thank you! 👍
You’re welcome ☺️
Thank you so much for explaining the foundational math. You are a life saver!
U got me 9mins 22 secs focussed. So far the best explanation I've ever listened to. 💚 Ur work.
Fredric Joes , I’m glad you enjoyed it!! Thanks for watching and for the feedback 😊
@@AcrosstheNanoverse I'm working on my post MSc project works. And will be soon starting my doctorate. Your help will be very much appreciated. Please make videos on Analytical Instrumentations. fredricjoes96@gmail.com is my email. I would love to learn from u. Reach out wen u r free.
To be honest
This is the only video that is suitable for learning EIS for beginners. Good and simple explanation.
Hoping for more electrochemistry related topic
Just one request
Your were talking about the increase of impedance over the period of time
But didn't mention the cause
It would be useful if you mention one or 2 of them
Thank you so much!
@@AnandJayarajan , SEI growth, degradation of electrodes, electrolyte decomposition,... a battery starts breaking the moment it starts working haha!
This video was very helpful in explaining what EIS was. I finally understand, on a surface level, what it actually is. I am currently in a Ph.D. Program for chemical engineering (electrochemistry) and had no prior exposure to topics like this. Thank you so much!
So glad to hear this video helped!! Best wishes in your studies and research 😊⚡️
your clarity of thought inspires me
Thank you! I appreciate you saying that :)
Summarized precisely and perfectly. Thank you !
Great work! You have cleared so many of my doubts in EIS. Love the way you describe things. Please uploaded more electrochemistry videos!
Thank you! I'm working on it! Anything specific you'd like to see?
@@AcrosstheNanoverse I would love to see videos on the electrochemical studies of batteries found in a research paper. A video on cyclic voltammetry and charge discharge will be exciting since you add a practical touch in your videos. :')
Such an Excellent Explanation. You made it look very simple but is not that simple as it looks. Thank you so much
Thank you!
This video greatly helped me for my thesis work. Using EIS to calculate and study oxide thicknesses on Zirconium alloys. Thanks for the insight!
Amazing! Best wishes with your research!
Thank you mam, You perfectly concise the bigger topic into a nutshell. I would like more videos about cv gcd eis of two electrode and three electrode systems.❤❤❤
thanks a lot! one of the best videos on basics of EIS on internet for a beginer like me. really appreciated
Glad it was helpful!
Thank you very much from Brazil. I am studying the growth of oxide films on duplex stainless steels using the voltametric technique and your contribution is very useful.
Very cool! Best wishes in your research!
You are serving the scientific community well and guiding young scientists. Well done!
Wow, thank you!
WoW, very amazing and simple explanation. Sometimes, we finds an inward (downward) bent in semicircle tail. Why this happens?
good question - it's due to induction - can happen because of the wiring external to the cell or some phenomena inside the cell. @@roh4523
Wow. Great Job. I am Into Eis for a fuel cell and you explaind the topic so Well for me.great Job thank you
Great video! Thank you for sharing this kind of knowledge in a such understandable way.
Thank you!
Now the vague ideas of my study are aligned. Great Work
Thank you for watching! Happy I can help! 😊
can't wait for the next EIS video. very clear explanation!
Hey! Just posted a new EIS video! I hope you like it :) th-cam.com/video/9j7PMgFmAq0/w-d-xo.html
Your explanation is very much useful for me and it's more helpful for my products because basically i am a potentiostat developer for electrochemical applicatios🥰🙏
Got any plans I could follow to make my own inexpensively?
Very easy but precise explanation. I'll give the link to the video to my students
Your teaching style is awesome and good interpretation, I am very charming of your lesson.
Thank you so much! I appreciate the feedback 😊
Thanks alot for clearing a concept of EIS in a very simple way..
You’re welcome 😊⚡️
Finally I understand the imaginary and real axis. I would like to ask something, what if the semicircle line did not touch the x-axis? I'm new to EIS and working on the surface modification for electrochemical sensors.
Thanks for this good explanation. It is very useful to study photocatalytic semiconductor materials.
Thank you so much! You made it so easy to understand. I'm glad I found your video.
Thanks for watching!
Thanks for sharing! Great intro video. Looking forward to learning more.
Thank you for your clear explanation and looking forward to seeing more videos from you related to this field. (Especially with more focus on solid-state batteries)
Thank you!
Excellent presentation
Thank you , I have a test next week and your explanation was spot on
Best wishes on your test! You’ve got this! Let me know how it goes 😊👍
@@AcrosstheNanoverse sure, thanks a lot 😀
It was a great introductory video! I had a few more questions to ask: 1) Is knowing the value of R the only purpose of performing EIS?
2) What is the significance of the diameter of the semi-circle and its radius ("height")?
3) Why do we apply just AC load to perform this experiment and not DC?
4) Which parameter does the y-axis signify?
1. No, 2. Magnitude of “capacitance” - I put it in quotes because it depends on the system you are studying as to what that means exactly, 3. Look at the equations.. the phase shift between incoming and outgoing AC signal is important + we are using it to look at super fast processes. 4. Imaginary impedance.
Great explanation. You are a great teacher. You should create more videos on this topic,
MianHusnain Iqbal, thank you! I am planning on it!! :)
I just posted a new video on this topic! I hope you enjoy it! th-cam.com/video/9j7PMgFmAq0/w-d-xo.html
Thank you for sharing! I can't wait to watch your other videos.
Thank you for watching!
Awesome video, please continue making battery videos!
Thanks! More coming soon! Be sure to subscribe so you don't miss them!
thank u so much, ALhamdulillah you are my best teacher about introductioon EIS, i hope we can meet hehe :)
There are certain papers that have been written as if they want to teach junior researchers how to perform research. The paper you mentioned here is one of them. Thanks.
Interesting! I didn’t realize that when I shared it; but I did choose it because I thought it was great for junior researchers! So that makes sense to me 😊👍
Thanks, using this explanation for my job interview next week.
How did the interview go?? 😊
@@AcrosstheNanoverse all good thanks. Still waiting to find out if I got the job! I've put your explanation on EIS into my memory bank (my brain) under "useful info" ready to access when I need it.
Wow..Graet! just love your way of teaching and became fan of you.
Thank you!
excellent, easy to understand and I enjoy learning to the last second
I’m so glad to hear you enjoyed it! Thank you for watching 😊
7.06 minute onward was the most interesting part....enjoyed
Thank you! Glad you enjoyed it! I made another video about Nyquist Plots, I hope it is interesting too! th-cam.com/video/9j7PMgFmAq0/w-d-xo.html
I have two concerns.
1)Can you explain me as of why in the y-axis, why there is a negative sign in the impedance (which is the imaginary part of the total impedance ) is plotted.
2) What if we switch the real impedance to y axis and imaginary impedance to x-axis?
What redox couple would you recommend for long term storage of charged electrolyte in an organic flow battery?
Excellent video. I wish you can make an extensive video on EIS for battery applications.
I filmed another video on Nyquist plots as they relate to EIS! I hope you enjoy it :) th-cam.com/video/9j7PMgFmAq0/w-d-xo.html
This is my first EIS video, just started working with an electrochemical research group, I am trying to build some AI for it :) I think I got a pretty good picture! Thanks alot :))
Very cool 😎 best wishes on your research!
Thank you, this was really helpful and clear. Keep uploading interesting content!
Thanks for watching!
Great video!!!
Very easy to understand!!
Thanks. It helped me a lot!
Thanks! You’re welcome!
simply amazing!
Thank you so much , i was unable to interpret the data but now i know how to do it
I’m so glad to hear that this helped! Thank you for watching! 😊
Brilliant explanation starting from the basics👍👍👍👍
Thank you!
Amazing...Thank you so much
This is a brilliantly intuitive intro to EIS ! I wonder why you didn't use the phrase "Nyquist plot" in the video, though as I was looking to see that after checking the description of the timestamps.
Thank you! I do have another video fully dedicated to Nyquist Plots! Would love to know what you think of it 😊⚡️
Include rapid interchange of molecular orientation at the interface with applied frequency and subsequent nullification of double layer effects, a suggestion.
Thank you! Great explanation.
Thank you!
Hi. Short and clear about a EIS. However, I would like to know if we fail to measure the impedance of the battery which is SOH, do we have any risk for safety point of view?
Does it impact to fast discharge if we fail to measure impedance.? Happy to receive your feedback. Thanks
Very well explained mam..Thanks
Most welcome 😊
Thank you from Germany!
Thanks for watching! 😊
Thank you so much
Just amazing 👏. You explained everything really interestingly...
Glad to hear it! ⚡️
Very well explained. Thanks
Brilliant. Really useful video. Thank you
Nice explanation. Thanks :)
Thank you for watching! :)
Hi, im working on Silicon anodes for LIBs. I want to calculate diffusion coefficient from impedence. I just want to how to calculate lithium molar concentrstion C?? Pls explain?? Same problem with Randles sevick equation also. In both these cases i want know the concentration of Li. Iam using 1M LiPF6( EC: DEC:FEC) ELECTROLYE. thankyou
I don’t know exactly what you’re asking. There’s lots of papers out there that describe measuring parameters like you are listing (diffusion coefficient, etc.). Look at those :)
Please continue this battery research video series.
Be sure to subscribe! More are coming soon 😊
You earned a subscriber, ma’am. Great work.
Thank you for subscribing!! :)
thanks for this video, you're so cut ahah and your explanation and expression are very clear. Good job ;)
I also thought she is so cute and explains to a point I feel am chatting with her. I almost asked a question only to realize its you tube. Thanks, am also publishing in the same and its thus so helpful to me
Hello.. Why the charge transfer resistance is high when I use 1M NaClO4 in EC:DEC(10% FEC) and low with 1M NaClO4 in EC:DEC
I believe in you! You can solve this one! Good luck :)
Thanks for believing in me.Actually I am struggling for last 2 months with this problem. Is it related with the rest time, that is we put for rest after the fabrication of coin cells for proper soakage of the electrolyte. Please help!!
hats off thanks
Thanks for watching!
Just great
I want more of your videos.. It's really useful.. God bless❤
6:12 didn't you mean AC voltage? Since EIS is the measure of the current response of the system subjected to fixed voltage perturbation (mV) in a wide frequency range usually 100k-0.01Hz?
Yes, AC voltage. Made that mistake, although technically there’s 2 types of EIS- GEIS and PEIS. Thanks for catching that!
@@AcrosstheNanoverse Thanks, for your reply. On the other hand, do you know some kind of animation visual representation of how the capacitance behaves when it comes to testing coatings. Rp is easy as it is represented with the resistance of the pores, but I have had always a problem with how to imagine the Cc? Is that the charge that is stored inside the pores by a chance? For new undamaged coatings Cc is very low range 1*10-11, and with its degradation rises as more charge can be stored on its surface, Would that reflect that behaviour? Thanks, EIS lady :)
I have data eis but i can not compute codctivity
Great explanation. Please keep it up!
Thanks, will do!
Great explanation! I just checked the channel, sadly only 3 videos. Hope to see more coming! Done subscribe!
Thank you! More are coming for sure! Working full time has me busy, but some videos are in progress :)
Just posted a new one today! Enjoy! :) th-cam.com/video/9j7PMgFmAq0/w-d-xo.html
this is very helpful for me .....thanks
Thank you for watching!
Beautiful explanation
thank you! I appreciate the feedback
how I measure the corrosion by this
nice presentation mam
Thank you!
It looks like you know a lot more about EIS than shown in the video. Do you mind sharing some more information on EIS, with some more detail? I am a Master's student working on EIS of a li-ion battery for my thesis. It would be really helpful if you could share some references specific to EIS of a li-ion battery or another video going into more detail about this process.
Tirth Shah , message me with your email and I’ll reach out. I can definitely help :)
@@AcrosstheNanoverse My e-mail is shahtirth123@gmail.com. I have performed EIS in COMSOL Multiphysics 5.3 but am looking for the theory behind EIS. If you can share some notes I can use for my thesis, it would be a great help. Thank you for connecting.
I just posted a new video on EIS and Nyquist plots! Enjoy :) th-cam.com/video/9j7PMgFmAq0/w-d-xo.html
May I ask whether the power of the lithium batteries is DC or AC ? thanks
DC :)
@@AcrosstheNanoverse
Is the redox reaction order of lithium battery linear or nonlinear ?
Thanks for addressing EIS very precisely. How one can determine the EIS, of a battery sample?
Thank you for watching! I’m not sure what you’re asking specifically, but you do typically need a potentiostat for performing electrochemical techniques like EIS. Gamry and Biologic are 2 companies that are known for selling these devices. Once you have one and know the theory behind how the technique works, you can do EIS! 😊
spectroscopy term is used for study of interaction of radiation with matter. So, in case of EIS,How is spectroscopy term is justified?
Good question! Spectroscopy is often associated with measurements of the light spectrum (or electromagnetic radiation spectrum); however, there are other spectra too! For EIS the spectrum that is being referred to is the spectrum of AC signal frequencies (Hz) that is being applied to/measured from the sample
@@AcrosstheNanoverse Thanks
Hi,
I found you video to be quite insightful. My undergraduate dissertation is on Impedance Spectroscopy of fuel cells. Could u please share some more content regarding EIS. Thanks in advance.
The Motivated , if you’re interested in more content, message me your email. :)
@@AcrosstheNanoverse Thank you for your quick reply. My email is wemakeadifference2016@gmail.com
I just posted a new video on EIS and Nyquist Plots! I hope you enjoy it! th-cam.com/video/9j7PMgFmAq0/w-d-xo.html
Why charge transfer occur at only low frequency ?
At high frequency because it is a fast process. Electron exchange is very fast compared to other processes like diffusion.
Thanks a lot!
you're very welcome :)
Great
Please make a video on " how to calculate the voltage of a lithium ion battery theoretically? ( Energy level concept) "
Thanks for the suggestion! That's an excellent idea. I'll work on it. Be sure to subscribe so you get notifications of new videos :)
@@AcrosstheNanoverse thanks for your kind reply
I am eagerly waiting for your video....
Omg. Beautifully explained. Would love if you could explain the niquistic plot more in detail. Subscribed!
Thank you! I plan to make a better video (this one was a practice), and I will def go into all the beauty of Nyquist plots!! Math is wonderful.
Hey! I just posted a video as per your request about Nyquist plots! I hope this helps! th-cam.com/video/9j7PMgFmAq0/w-d-xo.html
Superb mam
thank! good teaching...
One of the simplest Explanations of a very complicated topic. Do you have any plans of making a video on Kalman Filter and its use in attery modeling??
I have been working on a Kalman Filter video as per your request! I'm not too familiar with the technique but I'm interested and want to learn more. In the meantime, here is a video on Nyquist plots! th-cam.com/video/9j7PMgFmAq0/w-d-xo.html
Thank you so much.
Such a wonderful video about EIS.
can you give me some notes on EIS because I am a beginner and working on this topic.
Hi! Check out my newest video on EIS and Nyquist plots. I included a few papers that incorporate this technique in the description of the video. th-cam.com/video/9j7PMgFmAq0/w-d-xo.html
@@AcrosstheNanoverse Thank you
Wow just.... wow. Thank you 😁
haha, I'm glad you liked it! Thanks for watching!
Really nice ! thank you !
Could you maybe also talk about GITT? :D
Good idea!
What was the electrolyte with the best performance??
I don't remember off the top of my head, but the study listed in the description below lists the electrolyte formulations studied. The conclusion should have the information you seek :)
Well I have used EIS for impedance measurements of MOS capacitor on different temperatures (300 to 350K) and voltages (1 to 5V). It was a headache lol 😂
Nice explanation
Mam,
Could you please make video on capacity fade of battery
That would take many many videos! But more are coming soon so be sure to subscribe! Thanks for watching 😊
@@AcrosstheNanoverse sounds great mam!
my conclusion graduation paper (how do you call it in english?) will be about connect Impedance properties of an eletrolyte with optical properties. But I'm a chemical Engeneering student, so I haven't seen enough about eletricity in my graduation. Thanks for the video
Thank you for watching! Good luck on your thesis project! Congrats on graduating :)
Me who only passed Algebra watching this: ahh yes... i see i see.... oooh of course...
nice video.
Thank you!