Vertically aligned ZnO nanorod core-polypyrrole conducting polymer sheath and nanotube arrays for electrochemical supercapacitor energy storage

Table 1 Electrochemical impedance spectroscopy data obtained from actual Nyquist plots

Components	R_s(Ω . cm²)	R_ct(Ω . cm²)	W(Ω . cm²)	C_i(mf.cm^-2)	C_i(f.g^-1)
ZnO nanorod core-PPy sheath	0	5.8	20.4	107.3	74
Narrow PPy nanotube (2-h etch)	0	8.2	8.4	84.2	58
Open PPy nanotube (4-h etch)	1	7.2	5.4	83	57.2