Voltam

The Voltam parameter list is one of the EC Parameter Groups available in the Check Parameters and Scan views for Electrochemistry modes. Although this list is available for all modes, the specific options on the list and the ideal settings will change depending on the microscope type and imaging mode.

Elec area

• Surface area of the working electrode exposed to electrolyte, used to calculate the current density, J.

Voltam function

• Determines the cell current data type plotted on the vertical (y) axis of the voltammogram in the Electrochemistry window.
• Range or Settings:
  • Current: Cell current is plotted as a function of the working electrode potential.
  • Cur Dens: Cell current density is plotted as a function of the working electrode potential (current density is Current divided by Electrode Area).
  • Log Cur: The log of the cell current is plotted as a function of the working electrode potential.
  • Lg Cur Dens: The log of the cell current density is plotted as a function of the working electrode potential.
  • Charge: Integrated current (charge) is plotted as a function of the working electrode potential.
  • Chrg Dens: Charge density through working electrode (integrated current density) is plotted as a function of the working electrode potential.

I range

• Controls the vertical (y-axis) scale of the voltammogram graph.
• Units vary depending on Voltam function setting:

Volt Maximum

• Highest voltage level displayed on the voltammogram graph (right-hand side).

Volt Minimum

• Lowest voltage displayed on the voltammogram graph (left hand side).

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