Title:
ELECTROLYTIC CAPACITOR AND PRODUCTION METHOD FOR ELECTROLYTIC CAPACITOR
Document Type and Number:
WIPO Patent Application WO/2023/233610
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing: an electrolytic capacitor that uses a sintered foil having a metal sinter at at least the surface thereof as an electrode foil and stably exhibits the relatively large capacitance that is characteristic of sintered foils; and a production method for the electrolytic capacitor. An electrolytic capacitor (1) comprises: a capacitor element (2) that includes a positive electrode foil (8) having a dielectric layer, a negative electrode foil (9), and a separator (10) between the positive electrode foil (8) and the negative electrode foil (9); and an electrolyte (3) that permeates the capacitor element (2). The positive electrode foil (8) or the negative electrode foil (9) is obtained by shaping a sinter of a composition that contains a metal powder into a foil (is a foil-shaped sinter (8c)) or is obtained by forming a sinter coating film (8b) of the sinter on the surface of a substrate. The viscosity μ [cP] of the electrolyte (3) at 25[°C] is no more than 400 [cP].
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Inventors:
NAKAJIMA YOHEI (JP)
KANEKO TSUTOMU (JP)
SAKURAI YOSHISHIGE (JP)
NOZAWA TAKASHI (JP)
KANEKO TSUTOMU (JP)
SAKURAI YOSHISHIGE (JP)
NOZAWA TAKASHI (JP)
Application Number:
PCT/JP2022/022431
Publication Date:
December 07, 2023
Filing Date:
June 02, 2022
Export Citation:
Assignee:
RUBYCON CORP (JP)
YOKO TOYO METALS CO LTD (JP)
YOKO TOYO METALS CO LTD (JP)
International Classes:
H01G9/035; H01G9/052
Domestic Patent References:
| WO2019026701A1 | 2019-02-07 |
Foreign References:
| JP2005303062A | 2005-10-27 | |||
| JP2006524913A | 2006-11-02 | |||
| JP2008034257A | 2008-02-14 | |||
| JP2008098279A | 2008-04-24 |
Attorney, Agent or Firm:
WATANUKI PATENT SERVICE BUREAU (JP)
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