公开(公告)号：US11908630B2

公开(公告)日：2024-02-20

申请号：US17659620

申请日：2022-04-18

Applicant: TOKIN Corporation

Inventor： Yusuke Hoshina ,  Masami Ishijima ,  Tadamasa Asami ,  Yasuhisa Sugawara

IPC: H01G9/025 ,  H01G9/00

CPC classification number: H01G9/0036 ,  H01G9/025

Abstract: A solid electrolytic capacitor according to an aspect includes an anode body made of a valve metal, a dielectric layer formed on the anode body, a solid electrolyte layer formed on the dielectric layer, and a cathode body layer formed on the solid electrolyte layer. The solid electrolyte layer includes a first layer containing a first conductive polymer doped with a monomolecular dopant, and a second conductive polymer composed of a self-doped-type conductive polymer containing a plurality of side chains containing a functional group, the functional group being able to be doped, and a second layer formed on the first layer and containing a third conductive polymer doped with a polymer dopant; and the first conductive polymer is in contact with the third conductive polymer (the second layer).

公开(公告)号：US12278060B2

公开(公告)日：2025-04-15

申请号：US17812325

申请日：2022-07-13

Applicant: TOKIN Corporation

Inventor： Yasuhisa Sugawara ,  Masami Ishijima ,  Tadamasa Asami ,  Yusuke Hoshina

IPC: H01G9/025 ,  H01G9/00 ,  H01G9/15

Abstract: A solid electrolytic capacitor according to one aspect of the present disclosure includes: an anode body made of a valve metal; a dielectric layer formed on the anode body; and a solid electrolyte layer formed on the dielectric layer. The solid electrolyte layer includes: a first conductive polymer layer formed on the dielectric layer and heterogeneously doped with a monomolecular dopant; a block layer formed on the first conductive polymer layer; and a second conductive polymer layer formed on the block layer and composed of a self-doped-type conductive polymer containing a plurality of side chains containing a functional group that can be doped. The block layer blocks a migration of the self-doped-type conductive polymer from the second conductive polymer layer into the first conductive polymer layer and/or a migration of the self-doped-type conductive polymer from the second conductive polymer layer into pores of the porous anode body.