Abstract

BAPTISTA, A.C.; BORGES, J.P.  and  FERREIRA, I.. Produção de Biobaterias a partir de Membranas obtidas pela Técnica de Electrofiação. C.Tecn. Mat. [online]. 2010, vol.22, n.1-2, pp.2-13. ISSN 0870-8312.

This research work envisages the production of bio-batteries based on electrospun membranes.The present work aims at the development of an electrochemical device (bio-battery) able to generate electrical power from body fluids, like sweat or blood, to supply small power consumption electronic devices.To the development of these bio-batteries, cellulose acetate membranes were made with a matrix of nanofibers produced by electrospinning. The cellulose acetate membrane works both as support and as a separator. Thin films were deposited on both surfaces of the membrane to form the electrodes of the electrochemical device.The electrochemical behavior of membranes was analysed by cyclic voltammetry in order to evaluate the electrochemical reactions. The power generated by these devices depends not only on the materials used as electrodes, but also on the membrane thickness. In order to demonstrate the great potential of these electrochemical devices, bio-batteries prototypes were tested in sweated skin, demonstrating promising voltage and current values.

Keywords : bio-batteries; cellulose-based membranes; electrospinning; thin films.

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