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  • Title: Thin and flexible bio-batteries made of electrospun cellulose-based membranes.
    Author: Baptista AC, Martins JI, Fortunato E, Martins R, Borges JP, Ferreira I.
    Journal: Biosens Bioelectron; 2011 Jan 15; 26(5):2742-5. PubMed ID: 21055915.
    Abstract:
    The present work proposes the development of a bio-battery composed by an ultrathin monolithic structure of an electrospun cellulose acetate membrane, over which was deposited metallic thin film electrodes by thermal evaporation on both surfaces. The electrochemical characterization of the bio-batteries was performed under simulated body fluids like sweat and blood plasma [salt solution--0.9% (w/w) NaCl]. Reversible electrochemical reactions were detected through the cellulose acetate structure. Thus, a stable electrochemical behavior was achieved for a bio-battery with silver and aluminum thin films as electrodes. This device exhibits the ability to supply a power density higher than 3 μW cm(-2). Finally, a bio-battery prototype was tested on a sweated skin, demonstrating the potential of applicability of this bio-device as a micropower source.
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