Title:
SOLID ELECTROLYTIC CAPACITOR
Document Type and Number:
WIPO Patent Application WO/2023/079953
Kind Code:
A1
Abstract:
Provided is an electrolytic capacitor in which an increase in ESR is suppressed even in high-temperature environments. The electrolytic capacitor comprises a positive electrode foil, a negative electrode body, a separator, and a solid electrolytic layer. The positive electrode foil has a dielectric oxide film that is made of a valve metal and that is formed on a foil surface. The negative electrode body has a negative electrode foil that is made of a valve metal, and a carbon layer that is layered on the negative electrode foil. The solid electrolytic layer includes an electrically conductive polymer that is held by the separator and that is doped with an acid component. The separator contains fibers which have a hydroxyl group, in which molecules are bonded to each other via a 1,4-glycosidic bond, and which are treated with alkali.
Inventors:
KOSEKI KAZUYA (JP)
Application Number:
PCT/JP2022/038839
Publication Date:
May 11, 2023
Filing Date:
October 19, 2022
Export Citation:
Assignee:
NIPPON CHEMICON (JP)
International Classes:
H01G9/02; H01G9/028; H01G9/145; H01G9/15
Domestic Patent References:
| WO2005101432A1 | 2005-10-27 |
Foreign References:
| JP2016012667A | 2016-01-21 | |||
| JP2006190878A | 2006-07-20 |
Attorney, Agent or Firm:
KIUCHI Mitsuharu et al. (JP)
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