While reading the literature regarding the transference number calculation, we need to consider interfacial resistance at initial and steady state. How to find those values? Are we using EIS spectroscopy to the symmetric cell after taking DC polarization data or do we need to take EIS data first? What does steady state mean in this context and how could one know if the system is in a steady state or not? Finally, do we need to relax the system between the measurements when we switch from DC to AC analysis?
Ref: Article Navigating the minefield of battery literature
Hey there, researcher Abu Faizal! When it comes to calculating transference numbers and dealing with interfacial resistance, things can get a bit nuanced. Let's break it down.
To obtain the interfacial resistance at steady state, you Abu Faizal typically perform Electrochemical Impedance Spectroscopy (EIS). Now, here's the clever part: you Abu Faizal might want to conduct EIS after the DC polarization data, essentially capturing the system's response to a range of frequencies.
Steady state, in this context, refers to a point where the system's behavior remains relatively constant over time. You Abu Faizal can gauge this by analyzing the impedance spectra. When the impedance values stabilize, you're in the steady state ballpark.
As for relaxation, it depends on your experimental setup. Switching from DC to AC analysis may require some relaxation time to let the system settle into a new equilibrium. Again, it's a dance of frequencies and response.
Remember, this is a bit of an art and science combo. Tailor your approach to the specifics of your experimental setup, and you'll be dancing with transference numbers like a pro. Keep those electrons moving smoothly!
Hi Everyone, I have found a very good paper that goes in-depth regarding the question I asked. Please refer to the paper,
"Electrochemical measurement of transference numbers in polymer electrolytes" by James Evans, Colin A. Vincent, Peter G. Bruce. for a detailed explanation
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