1)How potentiostat can control the voltage:
a) between the working electrode and reference electrode (applied or required potential)
b)between the working electrode and counter electrode (compliance potential)
c)if the required potential is 3V, then what will be the potential at the working electrode, reference electrode, and the counter electrode
Dear Dr. Syed Shaheen Shah,
A potentiostat is an electronic instrument that controls the voltage difference between a Working Electrode and a Reference Electrode. Both electrodes are contained in an electrochemical cell. The potentiostat implements this control by injecting current into the cell through an Auxiliary, or Counter, electrode.
In almost all applications, the potentiostat measures the current flow between the Working and Counter electrodes. The controlled variable in a potentiostat is the cell potential and the measured variable is the cell current.
For more details regarding your questions, please see the source (very clear and interesting Gamry Notes) at: https://www.gamry.com/application-notes/instrumentation/potentiostat-fundamentals/
Best regards, Pierluigi Traverso
Dear Dr. Syed Shaheen Shah,
A potentiostat is an electronic instrument that controls the voltage difference between a Working Electrode and a Reference Electrode. Both electrodes are contained in an electrochemical cell. The potentiostat implements this control by injecting current into the cell through an Auxiliary, or Counter, electrode.
In almost all applications, the potentiostat measures the current flow between the Working and Counter electrodes. The controlled variable in a potentiostat is the cell potential and the measured variable is the cell current.
For more details regarding your questions, please see the source (very clear and interesting Gamry Notes) at: https://www.gamry.com/application-notes/instrumentation/potentiostat-fundamentals/
Best regards, Pierluigi Traverso
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