Thank you so much for the video. What is the graph at 2:01 called, please? Where can I read more about the same? I mean, I understand your explanation, but I need a literature source.
@@shashidharmuniswamy2620 Yeah! Lithium should have some great examples. The graph itself is species concentration vs position for a process called "chronopotentiometry". I would also recommend reading up on the "electrical double layer".
In the video at 8:12 min How you can interpret a niquist plot starting from 15band not from zero .What does his means? what is responsible for this shift?
Thank you for sharing this video. I have a question, why real part of impedance vary with frequency in nyquist plot? Or do i misinterpreting what graph tells?
If you're using a manufactured potentiostat (biologic or gamry, for instance), you can contact scientists there. They may be able to help you even without that specific instrumentation - worth a try!
[organic solar cells] Hey guys. Does anyone know how to extract diffusion coefficient, kinetic parameter and electrolyte resistance from EIS measurements in OSCs?
Unfortunately, I am unfamiliar with the physics of organic solar cells. If I understand correctly, electrons/holes are the only current-supplying species as opposed to electrons/ions in batteries/fuel cells. Two ideas come to mind: holes transport differently than ions although I believe diffusion coefficients still apply (with slight modification to the transport model) and second, the gap between the electrodes is smaller than typical separator thicknesses in batteries/fuel cells. These might impact the interpretation of the Nyquist plot/equivalent circuit. Frankly, I don't know if the same methods of extracting diffusion coefficients apply but it has been done, as shown in the following sources: Perrier, Gérard, et al. "Impedance spectrometry of optimized standard and inverted P3HT-PCBM organic solar cells." Solar Energy Materials and Solar Cells 101 (2012): 210-216. Ripolles-Sanchis, Teresa, et al. "Diffusion-recombination determines collected current and voltage in polymer: fullerene solar cells." The Journal of Physical Chemistry C 116.32 (2012): 16925-16933. I'd be surprised if a textbook doesn't cover this. I wish I had more time to look into it, hope this helps you start!
Dc does nothing for the reactance or the imaginary part of impedance. You won’t measure anything helpful with static measurements. You’ll just get real part or resistance. Actually come to think you might get some information at the Instant that you switch the load
You're amazing, thank you. you mentioned the critical bits without making it long and dull.
THANK YOU i've been dying understanding EIS from books, and your video really helps me!
Thank you for this extremelly clear explainantion!
Thank you very much for explaining in such a easy manner
Omg thank you for your helps a lot!!!
Desperately looking forward to your next video
Wow, the best explanation I've seen and also only for a course work....you should start making contents!
Thank you for the lecture. It is very insightful.
Nice work, you guys definetly gave me insight
Thank you so much for sharing this.
Wow amazing explanation please keep making videos you are helping humanity progress :)
This video was very helpful! Thank you
thanks for concise explanations
Very nice ;
Thanks ! This video helps me a lot !
Thanks for your explanation in detail
good job guys.. nice flow, graphic.. just nice.. keep up the good work
Thank you. It was really helpful.
Thank you. This is a very informative video.
Great video
Really nice video. Can you explain why ZReal (real resistance right?) is lowest at high frequencies? And why does it increase with lowering frequency?
Would really appreciate a transcript of this video
Thank you so much for the video. What is the graph at 2:01 called, please? Where can I read more about the same? I mean, I understand your explanation, but I need a literature source.
Perhaps search for "Lithium concentration gradient at electrode surface"
@@AcrosstheNanoverse Thank you!
@@shashidharmuniswamy2620 Yeah! Lithium should have some great examples. The graph itself is species concentration vs position for a process called "chronopotentiometry". I would also recommend reading up on the "electrical double layer".
Hi@@alexanderquinn3177 Thank you for your response!
really helpful video.
In the video at 8:12 min How you can interpret a niquist plot starting from 15band not from zero .What does his means? what is responsible for this shift?
Generally, a shift like that means there is a resistor component, in this case, equal to 15 units (e.g., ohms).
Thank you for sharing this video. I have a question, why real part of impedance vary with frequency in nyquist plot? Or do i misinterpreting what graph tells?
Thank You.
thank you very interesting. I have a problem. I can't find the equivalent circuit for my reponse impedance. It's complicated. I need help .
If you're using a manufactured potentiostat (biologic or gamry, for instance), you can contact scientists there. They may be able to help you even without that specific instrumentation - worth a try!
[organic solar cells]
Hey guys. Does anyone know how to extract diffusion coefficient, kinetic parameter and electrolyte resistance from EIS measurements in OSCs?
Unfortunately, I am unfamiliar with the physics of organic solar cells. If I understand correctly, electrons/holes are the only current-supplying species as opposed to electrons/ions in batteries/fuel cells. Two ideas come to mind: holes transport differently than ions although I believe diffusion coefficients still apply (with slight modification to the transport model) and second, the gap between the electrodes is smaller than typical separator thicknesses in batteries/fuel cells. These might impact the interpretation of the Nyquist plot/equivalent circuit. Frankly, I don't know if the same methods of extracting diffusion coefficients apply but it has been done, as shown in the following sources:
Perrier, Gérard, et al. "Impedance spectrometry of optimized standard and inverted P3HT-PCBM organic solar cells." Solar Energy Materials and Solar Cells 101 (2012): 210-216.
Ripolles-Sanchis, Teresa, et al. "Diffusion-recombination determines collected current and voltage in polymer: fullerene solar cells." The Journal of Physical Chemistry C 116.32 (2012): 16925-16933.
I'd be surprised if a textbook doesn't cover this.
I wish I had more time to look into it, hope this helps you start!
Amazing. Do you know how to calculate the time constant of a process?
Really depends! Often you can find theory for a particular process that will help you find the time constant. Do you have a specific process in mind?
Why mainly AC biased is employed for the EIS studies?
Dc does nothing for the reactance or the imaginary part of impedance. You won’t measure anything helpful with static measurements. You’ll just get real part or resistance. Actually come to think you might get some information at the Instant that you switch the load
excellent
HI, how did you animate the curve shown at 7:30 minutes?
Hi Vipul. We used Matlab and its VideoWriter tool.
Excellent
Thanks a lot! Those boring books really made me exhausted :(