Electrochemical behaviors of polyaniline/polyaniline-sulfonic acid composites

Polyaniline / anionic-polymer composites are important for battery applicat ions due to the cation-exchanging property. Electroactive poly-aniline-2-su lfonic acid (poly-ASA) was used instead of conventional electroinactive sul fonated polymer. Polyaniline / poly-ASA composite was prepared by electroch emical dopant exchange. The redox charge of resulting composite increased u p to 120 % of the initial value and the specific capacity was determined to be 117 Ah/kg. The use of poly-aniline-2,5-disulfonic acid as an electroact ive anionic polymer was also attempted.