Hello,
i was wondering why the LIB has a different resistance at charge and discharge?
Typical the resistance is lower at discharge allowing a higher C-rate at discharge. This also is connected to a higher T-range given for discharge compared to charge
Dear Maximilian Mellin
I think it depends on the electrochemical reaction that happened during each process. during discharge, Li ions should intercalate in the cathode active material (CAM), which are mostly metal oxide, or olivine type materials. during this reaction, electrochemical reaction is the reduction of metals in the crystal of the CAM. this reduction reaction is kinetically the slowest reaction that happened during discharge and can control the speed of whole reaction in the battery. on the other hand, during the charge reaction, li ions should intercalate between Graphite layers and C oxidation state will change and it would be the reaction that control the kinetic of whole reaction. as far as these two reaction differ from each other, I think they would show different resistance in battery during charge and discharge.
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