Resumo

ARRIETA ALMARIO, Álvaro; JARAMILLO MUNOZ, Andrés  e  PALENCIA LUNA, Manuel. Conductive films from Cassava starch as material for an electrochemical accumulator (battery). Rev. Soc. Quím. Perú [online]. 2015, vol.81, n.4, pp.328-338. ISSN 1810-634X.

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.

Palavras-chave : Polymeric battery; polypyrrole electrodes; starch films.

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