Relation Between Current and Electrode Potential

Linear Relation Between Current and Electrode Potential 

The most remarkable point which should be mentioned in relation to the physical aspects of the CTs obtained with transition metal oxides and 

The above argument along with the evidences presented in Section III is indicative of other transport mechanisms than dijfusion controlled lithium transport dominating during the CT experiments of transition metal oxides and graphite. Furthermore, the Ohmic relation between and AE indicates that the internal cell resistance plays a critical role in lithium intercalation/deintercalation. If this is the case, it is reasonable to say that the interfacial flux of lithium is determined by the difference between the applied potential Eapp and the actual instantaneous electrode potential E(t), divided by the internal cell resistance Rceii, and that therefore lithium hardly undergoes the realpotentiostatic constraint at the electrode/electrolyte interface (see Section II). This condition is referred to as the cell-impedance controlled lithium transport. 

Comparison of Cell Resistances Determined by the Current Transient Technique and by Electrochemical Impedance Spectroscopy 

For the sake of clarity of the above argument about the cell-impedance controlled lithium transport, it is very useful to determine experimentally the internal cell resistance as a function of the electrode 

The relaxation time t, especially was determined to be shorter than Is, irrespective of the initii electrode potential. All of the capacitors were fully charged before the initial time of 10 s, which indicates that the time of 10 s is long enough for one to analyze the CTs in terms of bulk diffusion of lithium. 

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If the dominant mechanism of deposition involves the formation of adatoms followed by surface diffusion to steps, the relation between current and electrode potential becomes complicated. The essential... 

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