Contribution à la synthèse d’oxydes de manganèse par complexation dans les films de polymère : Application dans les générateurs électrochimiques

Abstract

This thesis is devoted to the electrochemical study, the synthesis and the characterization of a new poly [4- (pyrrol-1-yl) benzoic acid]-MnO2 composite material that has been deposited on the surface of an electrode of vitreous carbon. The polymer film has been deposited by electrochemical oxidation of the 4- (pyrrol-1-yl) benzoic acid monomer in acetonitrile medium. The MnO2 particles were inserted by complexation of the Mn2 + ions by the polymer film thanks to the COOH carboxylic group present in the structure of the polymer followed by their electrochemical oxidation to form the MnO2 particles dispersed in the polymer film. The characterization of the composite material was carried out by impedance spectroscopy, scanning electron microscopy and X-ray diffraction.