Cycling Performance of Supercapacitors Assembled with Polypyrrole/Multi-Walled Carbon Nanotube/Conductive Carbon Composite Electrodes

Abstract

Polypyrrole (PPy)/multi-walled carbon nanotube (MWCNT)/conductive carbon (CC) composites are synthesized by the chem. oxidative polymn. method. The morphol. anal. of the composite materials indicates uniform coating of PPy over MWCNTs and conductive carbon. The electrochem. performances of PPy/MWCNT/CC composites with different compns. are evaluated in order to optimize the compn. of the composite electrode. Galvanostatic charge-discharge measurements and electrochem. impedance spectroscopy studies prove the excellent cycling stability of the PPy/MWCNT/CC composite electrodes. [on SciFinder(R)]