Performance of the Chemical and Electrochemical Composites of PPy/CNT as Electrodes in Type I Supercapacitors

Figure 14

Charge and discharge plots of the specific capacitance values as a function of the cycle number for (a) electrochemical and chemical PPy/CNT composites after 1000 cycles and (b) the electrochemical PPy/CNT composite and its constituent materials after 50 cycles. The current densities of the composites and their constituent material were 1.0 mA cm⁻² for the electrochemically synthesized PPy/CNT composite, 0.1 mA cm⁻² for the chemically synthesized PPy/CNT composite, 0.5 mA cm⁻² for PPy, and 0.1 mA cm⁻² for the CNTs, in EC/DMC (50% v/v) containing 1 mol L⁻¹ LiClO₄.

(a)

(b)