Solid electrolytic capacitor

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United States of America Patent

PATENT NO 11657982
APP PUB NO 20210335553A1
SERIAL NO

17272330

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Importance

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Abstract

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In a solid electrolytic capacitor having an electrolyte layer consisting of a solid electrolyte layer and a liquid, the solid electrolytic capacitor, which suppresses a dedoping reaction and which ESR thereof does not keenly increase, in particular, after a loading of heat stress, is provided. In the solid electrolytic capacitor, the electrolyte layer is formed in the capacitor element which is formed by opposing an anode foil and a cathode foil. This electrolyte layer includes the solid electrolyte layer and the liquid. The solid electrolyte layer includes a conductive polymer consisting of a dopant and a conjugated polymer. The liquid is filled in air gaps in the capacitor element on which the solid electrolyte layer is formed. The electrolyte layer includes ammonia as a cation component, and a molecular ratio of the cation component relative to 1 mol of a functional group which can contribute to a doping reaction of the dopant, in the electrolyte layer is 23 or less.

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Patent Owner(s)

Patent OwnerAddress
NIPPON CHEMI-CON CORPORATION5-6-4 OSAKI SHINAGAWA-KU TOKYO 141-8605

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sakakura, Masao Tokyo, JP 12 103
Sato, Kenta Tokyo, JP 115 1274

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