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 was produced by the in situ direct coating approach. the supercapacitor performance of the nanocomposites was studied by fourier transform infrared (ft-ir) spectroscopy and scanning electron microscopy (sem). the electrochemical properties of electrodes were also investigated by cyclic voltammetry (cv), galvanostatic charge–discharge and electrochemical impedance spectroscopy (eis) techniques in 0.5 m na2so4. the specific capacitance of 321.47 f. g-1, 277.77 f. g-1 and 80 f. g-1 obtained for pani/mno2-mwcnt, mno2-mwcnt and mwcnt, respectively. the eis results also showed that the capacitive behavior of mwcnt was improved by the addition of mno2 and pani.