Specific Capacitance of a Supercapacitor from Cyclic Voltammetry data
Formula
Cs - Specific capacitance (F/g) = to be calculated.
A - Area under the I vs. E curve (AV) = 0.0154
m - Mass of the electrode material (g) = 20 mg = 0.02 g
ν - Scan rate (V/s) = 10 mV/s = 0.01 V/s
dV - Potential window (difference in potential) = 0.3 (= 0.0 V (-0.3 V))
Area (A) under the curve can be calculated using Origin program, whereas 'dV' is the difference in the potential.
Refer the video tutorial for the calculations of 'A' and 'dV'.
By,
Dr. M Kanagasabapathy
Associate Professor
Department of Chemistry
Rajapalayam Rajus College
Madurai Kamaraj University
Rajapalayam 626117 (TN)