Influence of Additives on Performance of Polypyrrole–Carbon Nanotube Supercapacitors

Polypyrrole (PP) and composite PP–multiwalled carbon nanotube (MWNT) materials were prepared for supercapacitors (SC) using new dopants for PP. The MWNT dispersion was achieved using advanced dispersants. The 36 mg cm−2 PP electrochemical electrodes showed a capacitance of 6.3 F cm−2 at 2 mV s−1 scan rate. PP–MWNT composites showed enhanced capacitance for high charge–discharge rates and large electrode mass with enhanced cyclic stability. The …