CHARACTERISTICS OF POLYPYRROLE CHEMICALLY SYNTHESIZED BY VARIOUS OXIDIZING REAGENTS

Polypyrrole was chemically synthesized using various oxidizing reagent s and examined as a positive electrode material. Physical properties, morphologies and electrochemical characteristics of polypyrrole were g reatly influenced by the oxidizing reagent used for polymerization. In general, polypyrrole with a smaller particle size and a larger specif ic surface area showed better discharge performance than that with a l arger particle size and a smaller specific surface area. Polypyrrole w as also synthesized on various conducting and nonconducting substrates using Fe(ClO4)(3) as an oxidizing reagent. By using PP nonwoven fabri c as a substrate material, a high discharge capacity of 72 mA h g(-1) was obtained. Polypyrrole synthesized on only one side of PP nonwoven fabric was able to be used as an electrode.