Study on poly(3,4-ethylenedioxythiophene) behaviour in I-/I-2 solution

The properties of poly( 3,4-ethylenedioxythiophene) (PEDT) film have been s tudied in iodide solutions by cyclic voltammetry and stripping voltammetry methods. It has been shown that formation of charge-transfer complexes betw een iodine species and polymeric rings promotes storage of iodine on an ele ctrode covered by PEDT film. Due to this behaviour the PEDT layer can be em ployed for electroanalysis of dilute (10(-4)-10(-3) M) solutions of iodide salts by stripping voltammetry methods. The possibility of PEDT film applic ation for zinc-iodide rechargeable batteries was also examined. (C) 2000 El sevier Science S.A. All rights reserved.