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Development of protective polymeric electrically highly conductive films for application on electrochemical energy generating devices and manufacture of an automatic applicator

Grant number: 02/07995-3
Support type:Research Grants - Innovative Research in Small Business - PIPE
Duration: November 01, 2003 - October 31, 2009
Field of knowledge:Engineering - Chemical Engineering - Chemical Technology
Principal researcher:Valdemar Stelita Ferreira
Grantee:Valdemar Stelita Ferreira
Company:V S Ferreira Consultoria
City: Americana

Abstract

The project aims to refine two different formulations and the applicator equipment for aqueous polymeric emulsions with added graphite which, after drying, result in electrically conductive films, impermeable to ions or gases, thermically and chemically resistant for use in alkaline batteries and fuel cells. Formulation One will allow the replacement of solvent based films used in the alkaline battery industry for the internal coating of the nickeled steel casing, preventing the corrosion of the cathode collector. Such batteries have a heavy demand in the latest generation of electronic devices such as minidiscs, CD-players, digital cameras and electronic organizers. Variations of the properties described, applied in Formulation Two, will permit the reduction in the thickness of the present carbon/graphite bipolar separators used in fuel cells. These separators collect and conduct the current from the anode of a cell to the cathode of the adjacent cell, while they also distribute hydrogen gas over the anode surface and the air or oxygen over the cathode surface. The project will be carried out in three stages, which include the formalization of the procedures, various types of tests, acquisition of equipment and materials and development of the manufacturing technologies on a large scale, among other activities. (AU)

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