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Table 2 Characteristic resistance and capacitive parameters estimated by fitting of Nyquist plots

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

Components CPEdl(mMho, p) Rct(Ω) CPEw(mMho, p) Rnr(Ω) CPEnr(mMho, p)
ZnO nanorod core-PPy sheath Q = 0.025 p = 0.55 21.24 Q = 0.03 p = 0.61 6 Q = 0.012 p = 0.75
Narrow PPy nanotube (2-h etch) Q = 0.0006 p = 0.87 18 Q = 0.036 p = 0.74 28 Q = 0.065 p = 0.44
Open PPy nanotube (4-h etch) Q = 0.04 p = 0.61 16 Q = 0.04 p = 0.76 20 Q = 0.389 p = 0.42