CONDUCTIVE FILMS FROM CASSAVA STARCH AS MATERIAL FOR AN ELECTROCHEMICAL ACCUMULATOR (BATTERY)

Abstract

Currently, there is a need to develop new devices capable of storing energy, which are
lightweight, flexible and friendly to the environment. In this paper we present the synthesis
and characterization of cassava starch films and polypyrrole films, which were used in the
development of an electrochemical battery. The starch films were synthesizedchemically
from native cassava starch adding plasticizers and lithium perchlorate. Moreover, polypyrrole
films were doped with p-toluenesulfonic acid (pTS) and Indigo Carmin (IC) and synthesized
electrochemically in an electrochemical cell of three electrodes (working, reference and
auxiliary). The characterization was carried out using electrochemical techniques of cyclic
voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The results indicate
excellent electrochemical behavior of starch films with conductivities of approximately 3x10-3 S cm-1 and a good redox activity which allow the accumulation of charge in the
device assembly.