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<< Click to Display Table of Contents >> Navigation: Experiments > J - Electrochemical Energy > Techniques > Potentiostatic > Potentiostatic - Experimental Sequence |
Run the Potentiostatic standard technique by selecting Experiment > Electrochemical Energy > Potentiostatic from the Framework™ menu bar. This initiates the following sequence of events:
1.Framework™ creates a Runner window, and the PWR Potentiostatic.exp script is run in this window.
2.The script creates the Setup dialog box which becomes the active window and accepts changes in the experimental parameters. This Setup window remembers the experimental settings from the last time this script was run. To restore the parameters to the values defined in the script, click the Default button.
3.The script now obtains the use of the potentiostat specified during Setup and opens the data file using the Output name. If the potentiostat is in use or the file cannot be opened, the script returns you to the Setup dialog box. The file header information is written to the data file. This information is written to the file prior to data acquisition. If the experiment is aborted, the file contains only this information. This header information includes:
•Tags identifying possible analyses.
•The current time and date.
•A list of the Setup parameters.
4.The cell is turned on.
5.The actual potentiostatic hold occurs. Readings of voltage and current are performed at fixed time-intervals during the hold. The hold is actually performed galvanostatically with a feedback loop to perform a pseudo-potentiostatic experiment. This ensures that the instrument will not go into current overload which can happen under normal potentiostatic mode. A plot of current and voltage versus time is displayed during the hold.
6.The data are written to the output file, and the script cleans up and halts. After the experimental sequence is complete, the cell is turned off. The acquired data are written to the output file. The script then waits for you to click the F2-Skip button. After you do so, the script closes everything that's open, including the Runner window.