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Autogenous electrolyte, non-pyrolytically produced solid capacitor structure

United States Patent

5,729,424
March 17, 1998
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
A solid electrolytic capacitor having a solid electrolyte comprising manganese dioxide dispersed in an aromatic polyamide capable of further cure to form polyimide linkages, the solid electrolyte being disposed between a first electrode made of valve metal covered by an anodic oxide film and a second electrode opposite the first electrode. The electrolyte autogenously produces water, oxygen, and hydroxyl groups which act as healing substances and is not itself produced pyrolytically. Reduction of the manganese dioxide and the water molecules released by formation of imide linkages result in substantially improved self-healing of anodic dielectric layer defects.
Sharp; Donald J. (Albuquerque, NM), Armstrong; Pamela S. (Abingdon, MD), Panitz; Janda Kirk G. (Edgewood, NM)
The United States of America as represented by the United States (Washington, DC)
08/ 534,437
September 27, 1995
The United States Government has rights in this invention pursuant to Contract No. DE-AC04-94AL85000 between the United States Department of Energy and Sandia Corporation.