Polymer Nanocomposite Electrode Consisting of Polyaniline and Modified Multi-Walled Carbon Nanotube for Rechargeable Battery.

In this study, PANI nanocomposite with modified multi-walled carbon nanotube (mMWCNT) was prepared. Herein MWCNT was modified by Friedel-Crafts acylation reaction. The dc conductivity of PANI nanocomposite according to the content of mMWCNT was measured by four-point probe. The highest conductivity of 9.49 S/cm was obtained in case of PANI nanocomposite with 3 wt% of mMWCNT. And it could be known that MWCNT was less damaged by the modification of Friedel-Crafts acylation reaction (mMWCNT) than strong acid treatment (aMWCNT), so the thermal stability of PANI nanocomposite was higher than that of pure PANI. And the morphology and crystallinity of the PANI nanocomposite were investigated by field emission scanning electron microscope (FE-SEM), transmission electron microscope (TEM) and X-ray diffraction. Also the electrochemical property of PANI nanocomposite was intensively investigated by cyclic voltammetry (CV) and charge-discharge capacity. From the CV data, it could be known that the charge-discharge capacity of PANI nanocomposite electrode was improved compared to pure PANI and PANI + aMWCNT electrodes.