Supercapacitance of Single-Walled Carbon Nanotubes-Polypyrrole Composites

Table 1

Capacitance and real impedance values at 0.01 Hz for pure polymeric and composite films.

Modified electrode	Slope of −𝑍^′′=𝑓(1/2𝜋 · frequency)	𝑍𝑟 (Ω cm^2) at 0.01 Hz	C (F cm^−2)	Relative standard deviation (%)
PPY/ClO4^−; 1 mA cm^−2, 20 min	12.646	73.5	0.079	4.23
PPY/CNTs; 1 mA cm^−2, 10 min	10.807	47.8	0.093	4.57
PPY/CNTs; 1 mA cm^−2, 20 min	4.4154	15.3	0.226	6.26
PPY/CNTs; 2 mA cm^−2, 20 min	2.2193	10.2	0.451	6.73