Electrical properties of polyaniline films formed in acid with and without Cs+ ions in the electrolyte

The effect of Cs+ ions added to the electrolyte for polyaniline films electrosynthesized in 0.1 m aniline/0.5m H2SO4 was investigated. Some properties of PANI films, such as the capacitance, the ohmic resistance and the charge-transfer resistance were obtained using electrochemical impedance spectroscopy. It was found that Cs+ ions used during PANI synthesis change its morphology, with a consequent increase in capacitance and conductivity, and a decrease in charge-transfer resistance.