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ADDITIVES FOR ENHANCED PERFORMANCE OF CONDUCTING POLYMERS IN ELECTROCHEMICAL CELLS

IP.com Disclosure Number: IPCOM000008514D
Original Publication Date: 1997-Dec-01
Included in the Prior Art Database: 2002-Jun-19

Publishing Venue

Motorola

Related People

Authors:
Peter R. Elliker Guoping Deng Jason N. Howard Frank Russell Denton, III

Abstract

Electrochemical devices based on conducting polymers suffer from short operating lifetimes and incomplete utilization of the polymer's capacitance. These problems are common to the investigation of conducting polymers for energy storage applica- tions A primary cause of the short lifetimes could be due to poor interaction between the highly polar electrolyte system and the lower polarity of the con- ducting polymer. If the degree of interaction between polymer and electrolyte is low, then phase separation may occur when the conducting polymer is cycled between the doped and undoped states during charging and discharging. The result will be a dwindling capacity of the conducting polymer due to charge and/or solvent trapping. This paper describes a unique approach to conducting polymer stabilization through the use of electrolyte additives.