Electrolytic capacitor
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United States of America Patent
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Feb 27, 2024
Grant Date -
Sep 1, 2022
app pub date -
Jul 31, 2020
filing date -
Aug 8, 2019
priority date (Note) -
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Abstract
An electrolytic capacitor includes a capacitor element. The capacitor element includes an anode body, a dielectric layer that covers at least a part of the anode body, a solid electrolyte layer that covers at least a part of the dielectric layer, and a cathode lead-out layer that covers a part of the solid electrolyte layer. The cathode lead-out layer contains a carbon material and a first polymer including an acid group. The acid group includes at least one selected from the group consisting of a sulfone group, a carboxyl group, and a derivative of the sulfone group or the carboxyl group.
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