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Polypyrrole Coated Carbon Electrodes as Anodes in ZnCl(2) Batteries

IP.com Disclosure Number: IPCOM000050538D
Original Publication Date: 1982-Nov-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Bargon, J: AUTHOR [+2]

Abstract

Carbon electrodes coated with polypyrrole can be used as anodes in the ZnCl(2) batteries in vehicles of in utility applications. These coated electrodes can be shown to be more energy efficient, since the potential required to induce the Cl-/Cl(2) reaction is lower than that required when using untreated carbon electrodes. Furthermore, polypyrrole surfaces are more resistent to chlorine-induced corrosion of carbon electrodes than is carbon. The coating on the carbon electrodes can easily be manufactured by electroplating the carbon electrodes in a suitable solution of a polar solvent (acetonitrile) or H(2)O, electrolyte, and pyrrole. The electrodes thus obtained do not require any further conditioning.

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Polypyrrole Coated Carbon Electrodes as Anodes in ZnCl(2) Batteries

Carbon electrodes coated with polypyrrole can be used as anodes in the ZnCl(2) batteries in vehicles of in utility applications. These coated electrodes can be shown to be more energy efficient, since the potential required to induce the Cl-/Cl(2) reaction is lower than that required when using untreated carbon electrodes. Furthermore, polypyrrole surfaces are more resistent to chlorine- induced corrosion of carbon electrodes than is carbon. The coating on the carbon electrodes can easily be manufactured by electroplating the carbon electrodes in a suitable solution of a polar solvent (acetonitrile) or H(2)O, electrolyte, and pyrrole. The electrodes thus obtained do not require any further conditioning.

Polypyrrole-activated surfaces achieve discharge in the Cl-/Cl(2) couple at a lower potential than is characteristic for carbon electrodes which have not been subjected to the pyrrole electroplating treatment.

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