Abstract

Effect of magnetic field on the electrochemical properties of polyaniline films

Author(s): Wenyi Su, Fengyan Liang, Li Ma

The polyaniline (PANI) films are prepared on both bare nickel flake and flexible polyethylene terephthalate-indium tin oxide substrates by potantionstatic method in the presence and absence of a constant magnetic field (MF) (0.8T). Based on the cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), Tafel plot and UV-vis spectra, the paper has studied the effect of MF on the electrochemical properties of PANI films, and the result shows that the PANI films prepared in the presence of a constant MF have a higher value of redox-current, better stability, smaller charge transfer resistance, more noble value of the corresponding corrosion potential, and a longer wavelength where the peak of ð-polaron transition appears.