Electrochemical synthesis of polypyrrole films on copper electrode: Evalution of corrosion protection efficiency

The use of appropriate electrolyte allows to deposit Polypyrrole (PPy) films on oxidizable metals such as copper by electrochemical oxidation of Pyrrole[1-3]. In this work citric acid, sodium benzoate are used as electrolytes and compared in terms of easiness for polypyrrole deposition,and filmcharacteristics [4,5].Electrochemical measurements in the presence of these electrolytes with and without pyrrole demonstrate that copper can be efficiently passivated before polypyrrole electrodeposition.