Preparation and Supercapacitive Performance of Polyaniline with MnO2 as Oxidant

The doped polyainiline(PANI) was successfully polymerized with HCl as dopant and MnO2 as oxidant and characterized by scanning electron microscopy, filtergrating infrared spectrometer for structure and electrochemical station for supercapacitive performance. Results indicate that the monomer conversion is enhanced with the increasing of MnO2 concentration, the decreasing of monomer concentration, the falling of polymerization temperature and the extending of polymerization time. The prepared polyaniline is accumulated with shaggy grain which is about 100 nm, and shows excellent supercapacitive performance with a maximum specific capacitance of 178 F/g.