dear Santimoy 

I think this link will help you. 

https://www.researchgate.net/post/Could_anyone_tell_me_how_can_to_measure_IR_drop

good luk

Hi,

Definitely yes. From charge discharge plots, you can estimate the ohmic drop when you switch from charge to discharge and deduce a resistance. But the most reliable method is to use Electrochemical Impedance Spectroscopy.

All my best

Patrice Simon

Thanks Zuhair Elseddig and Prof. Simon for valuable suggestion. I want to clarify another point from you. What would be the magnitude of IR drop studied from discharge profile in charge discharge profile. How can I measure the valu of IR drop from discharge curve?

Please provide me some literature if possible.

Dear Santimoy,

Immediately when you stop to charge at constant current (I) and during the discharge process two parameters, you should consider. The drop in voltage (ΔV) due to internal resistance, and drop in voltage due to capacitance.

The IR drop can be calculated from ΔV/current (Ohm's Law), unfortunately at high currents, you can not deduced IR drop by this method. Additionally, the IR drop should increase linearly with the current so that the slope gives you equivalent series resistance.

I hope a links below will be helpful for you.

https://www.tecategroup.com/ultracapacitors-supercapacitors/ultracapacitor-FAQ.php

http://www.sciencedirect.com/science/article/pii/S002207287580088X

Yours sincerely,

Mouad

Thanks Mouad Dahbi for your suggestion.