Current_Interruption_OA_I_Source PUBLIC

Not provided.

Circuit to determine the voltage drop in solution and the voltage drop at the electrochemical interface. Current is controlled by the voltage V2 and R7. The time-dependent output show that the measured voltage across the whole cell is in two parts, one (R1+R3)*I dropping rapidly and the other (R2//C2) decaying more slowly. In addition, simulating the frequency response shows that the same information can be obtaining with a sin wave source. R1 is the resistance of the wire and electrical contact in the working electrode, a carbon fiber. R2//C2 is the interface, R3//C3 is the bulk solution and C1//R4 is the reference electrode. No potentiostat here.