Corrosion-free electrochemical synthesis of polyaniline using Cu counter electrode in acidic medium

No significant corrosion of the Cu electrode was found while synthesizing from AS in presence of H 2 SO 4 , whereas relatively higher corrosion of Cu as well as contamination of synthesized PAni with corroded Cu were observed for the synthesis from aniline in presence of H 2 SO 4 or from AS in the absence of H 2 SO 4 .

Corrosion-free synthesis yields PAni free from contamination of Cu and exhibits smaller particle size and superior electrical and supercapacitive behavior compared to the process exhibiting corrosion of counter electrode.