Title:
ELECTROLYTIC CAPACITOR
Document Type and Number:
WIPO Patent Application WO/2020/262091
Kind Code:
A1
Abstract:
Provided is an electrolytic capacitor that has low impedance as a result of the water content thereof being increased, that has a withstand voltage of 400V or more, and that makes it possible to increase long-term reliability. An electrolytic capacitor (1) that serves as a means for solving the problem addressed by the present invention includes ethylene glycol, 10-30 mass% of water, and 1-12 mass% of an amine salt of carboxylic acid as an electrolyte solution (2e), said electrolyte solution (2e) has 0.01-2 mass% of at least one of ammonium hypophosphite, an amine salt of hypophosphoric acid, and hypophosphoric acid added thereto, and the carboxylic acid is a polycarboxylic acid having a chain hydrocarbon skeleton and a molecular weight of 140-500.
Inventors:
NOZAWA YOSUKE (JP)
Application Number:
PCT/JP2020/023491
Publication Date:
December 30, 2020
Filing Date:
June 16, 2020
Export Citation:
Assignee:
RUBYCON CORP (JP)
International Classes:
H01G9/035; H01G9/145
Foreign References:
| JP2005039245A | 2005-02-10 | |||
| JP2005019773A | 2005-01-20 | |||
| JPS5734326A | 1982-02-24 |
Attorney, Agent or Firm:
WATANUKI PATENT SERVICE BUREAU (JP)
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