ELECTROCHEMICAL SYNTHESIS OF POLYANILINE ON ALUMINUM ELECTRODES

Different modes of the electrochemical synthesis of polyaniline are sh own to be possible on the aluminum surface in sulfuric-acid electrolyt es containing catalytic amounts of hexachloroiridic acid and its salts . The effects of various techniques employed for introducing the catal ytic additives in the electrochemical synthesis and the anodic oxidati on of the aluminum electrodes are studied. The catalyst presumably ent ers the composition of the surface oxide film enhancing its conductanc e and promoting better monomer adsorption at the electrode surface by complexing with the aniline molecule.