Elsevier

Synthetic Metals

Volume 41, Issue 3, 6 May 1991, Pages 1133-1136
Synthetic Metals

An aluminum solid electrolytic capacitor with an electroconducting-polymer electrolyte

https://doi.org/10.1016/0379-6779(91)91570-ZGet rights and content

Abstract

A new type of aluminum solid electrolytic capacitor in which electroconducting polymer is applied as an electrolyte was developed. It was found that polypyrrole doped with alkylnaphthalenesulfonate (PPy/ANS) offers excellent thermal and moisture stabilities. By providing an etched and anodized aluminum foil electrode with a thin layer of pyrolytic manganese dioxide, higher coverage with electrochemically synthesized polypyrrole was accomplished. The newly developed capacitor not only has good frequency and temperature characteristics but also has good thermal and moisture stabilities.

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