Abstract
The influence of polymerization conditions on the electrochemical properties and morphology of polyaniline are studied. It is found that the charge/discharge performance of chemically synthesized polyaniline is greatly influenced by the oxidizing reagents used for the polymerization. Cu(BF 4) 2 and Fe(ClO 4) 3 are particularly suitable reagents. Protons in the reaction media exert a strong influence on the morphology and electrochemical properties of polyaniline in both chemical and electrochemical polymerization processes. A novel process for chemically synthesizing polyaniline is developed to obtain polyaniline with superior electrochemical properties. In this process, polyaniline/ HBF 4 salt is oxidized with Cu(BF 4) 2/acetonitrile and produces fibrous polyaniline with good doping/undoping reversibility.
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