We know charge transfer happens at the electrodes in a supercapacitor or a battery or in corrosion. But what exactly happens during charge transfer in a supercapacitor? How is this electronic charge giving rise to pseudocapacitance? How is the electron during the switching of transition states helping in adding more psedocapacitance?
(1) If its conducting polymer the electronic charge and the doping ions will rise to
pseudocapacitance and the charge transfer will follow the redox reaction.
(2) if its carbon materials the charge transfer will arise to electrochemical double layer
(Charge accumulation of electrode-electrolyte interface)
For further clarification please follow the following review articles.
many time charge transfer resistance is a confusing term. it may be viewed as polarization resistance. When the electrode polarity is changed from positive to negative or vice versa, the ions have to revert from its highest potential position, this happens very fast in metals and acidic/alkaline electrolyte because of high conductivity. but if the electrolyte is neutral and the current collector is non metal, the process is much slower. and thus shows higher polarization resistance
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