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Effect of magnetic field on the electrochemical properties of polyaniline films

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.