Polarization Curve Experimental Sequence
Run the Electrochemical Energy Polarization Curve standard technique by selecting Experiment>Electrochemical Energy>Polarization Curve from the Framework™ menu bar. This initiates the following sequence of events:
- The Framework creates a runner window, and the pwr polarization curve.exp script is run in this window.
- The script creates the Setup dialog box and accepts changes in the parameters.
- The script now obtains the use of the potentiostat specified during Setup, and opens the data file specified in the Output name. The runner window's Title reflects the Output filename. If the potentiostat is in use or the file cannot be opened, the script returns 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 output file contains only this information. This header information includes: (a) Tags identifying possible analysis; (b) The current time and data; and (c) A list of setup parameters.
- The maximum voltage is determined by measuring the voltage at the start of the experiment. This maximum voltage is used to help determine the appropriate current range for use in the software feedback mode for controlled-power and controlled-load discharge modes.
- The cell is turned ON.
The actual scan occurs. The sample is swept from the Initial Discharge Current to the Final Discharge Current. Readings are taken at fixed time intervals during the sweep.
A plot of voltage versus discharge current is displayed during the scan.
- 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.