Performance of polyaniline/manganese oxide-MWCNT Nanocomposites as Supercapacitors

Composite electrodes of polyaniline/MnO2-Multi walled carbon nanotube (PANI/MnO2-MWCNT), MnO2-MWCNT nanocomposites and MWCNT were produced by the in situ directcoating approach. The structure and morphology of the nanocomposites were studied by Fouriertransform infrared (FT-IR) spectroscopy and scanning electron microscopy (SEM). Theelectrochemical properties of electrodes were also investigated by cyclic voltammetry (CV),galvanostatic charge–discharge and electrochemical impedance spectroscopy (EIS) techniques in0.5 M Na2SO4. The specific capacitance of 321.47 F. g-1, 277.77 F. g-1, and 80 F. g-1 wereobtained for PANI/MnO2-MWCNT, MnO2-MWCNT, and MWCNT, respectively. The EISresults also showed that the capacitive behavior of MWCNT was improved by the addition ofMnO2 and PANI.

کلیدواژه ها:

Chemical polymerization ، supercapacitor ، PANI/MnO2-MWCNT ، impedance ، MnO2