I want to measure IR drop. Is there a way to measure it from galvanostatic charge/dicharge curve?
Thanks Meng for your answer, but what are the steps exactly? can you help me ?
According to the EIS spectra, you may always get the electrochemical parameters of Rs, Rct,Cdl, etc. If possible, you can try to relate these parameters to the IR drop from gralvanostatic charge/discharge curve. Then, a relationship between them may be found, according to which IR drop may be measured by EIS indrectly.
You can study this method:
https://www.google.com/patents/CN87217029U?cl=en&dq=Measure+ir+drop&hl=en&sa=X&ei=PPWVU529M-Gz0QXHxoGQDQ&ved=0CDYQ6AEwAg
Or search for similar in the search box
Charge-discharge is time against potential diagram. Straight line part in the discharge curve from maximum potential give the value of IR drop. If you want to measure IR drop means, In discharge part
1. note down the maximum potential and time (s) - V1
Consider max potential is 1 V at 60 s.
2. Note down the minimum potential in the same time -V2
low potential in 60 s is less then 1 V, say 0.98 V
The difference between V1 and V2 is IR drop. So 1 V - 0.98 V = 0.02 V is IR drop
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