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An electrochemical cell for the efficient turn around of wafer working electrodes
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View: Figures


Image of FIG. 1.
FIG. 1.

A schematic cross section of the cell, showing (1) the Teflon base, (2) the Teflon reservoir, (3) the perfluoroelastomer o-ring, (4) the working electrode, and (5) the two half turn thumb screws. On the left, the thumb screw is shown turned into position holding the reservoir securely to the base. On the right, the thumb screw is shown turned out of position, allowing the reservoir to be lifted from the base. The reference and counter electrodes are placed in the cylindrical well of the reservoir to make contact with the electrolyte.

Image of FIG. 2.
FIG. 2.

Cyclic voltammograms of 5 mM and 1 M KCl at a scan rate of (a) 10 and (b) 250 mV/s.

Image of FIG. 3.
FIG. 3.

The magnitude of the peak cathodic current, , as a function of the square root of the scan rate, , for one working electrode trial. The dashed line is a linear fit to the vs data for the trial. The electrochemical area of this electrode was found to be .

Image of FIG. 4.
FIG. 4.

The electrochemical area of the Au/Si working electrodes for ten trials. The unweighted average area for all the trials is indicated by the solid line, while the dashed lines represent the average plus and minus the standard deviation of the trials.

Image of FIG. 5.
FIG. 5.

Double step chronoamperometry of 5 mM and 1 M KCl from 600 mV to 0 mV and back to 600 mV with a step time of 5 s. The dashed lines are linear fits to the vs data for all the currents below .


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: An electrochemical cell for the efficient turn around of wafer working electrodes