US 12,293,880 B2
Electrolytic capacitor
Yuichiro Tsubaki, Kyoto (JP); and Tatsuji Aoyama, Kyoto (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed on Oct. 11, 2022, as Appl. No. 18/045,654.
Application 18/045,654 is a continuation of application No. 17/155,644, filed on Jan. 22, 2021, granted, now 11,508,530.
Application 17/155,644 is a continuation of application No. 16/703,080, filed on Dec. 4, 2019, granted, now 10,937,601, issued on Mar. 2, 2021.
Application 16/703,080 is a continuation of application No. 15/915,109, filed on Mar. 8, 2018, granted, now 10,535,472, issued on Jan. 14, 2020.
Application 15/915,109 is a continuation of application No. PCT/JP2016/004271, filed on Sep. 20, 2016.
Claims priority of application No. 2015-189454 (JP), filed on Sep. 28, 2015.
Prior Publication US 2023/0109930 A1, Apr. 13, 2023
Int. Cl. H01G 9/145 (2006.01); H01G 9/00 (2006.01); H01G 9/025 (2006.01); H01G 9/028 (2006.01); H01G 9/035 (2006.01); H01G 9/055 (2006.01); H01G 9/07 (2006.01)
CPC H01G 9/145 (2013.01) [H01G 9/0032 (2013.01); H01G 9/0036 (2013.01); H01G 9/025 (2013.01); H01G 9/028 (2013.01); H01G 9/035 (2013.01); H01G 9/0003 (2013.01); H01G 9/055 (2013.01); H01G 9/07 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An electrolytic capacitor comprising:
an anode body having a dielectric layer;
a solid electrolyte layer in contact with the dielectric layer of the anode body; and
an electrolytic solution, wherein:
the electrolytic solution contains a solvent and a solute,
the solvent contains a glycol compound,
the solute contains an acid component and a base component,
a mass of the acid component in the solute is greater than a mass of the base component in the solute,
the acid component contains a carboxylic acid and a first aromatic compound having a hydroxyl group,
a part of the carboxylic acid is derived from a salt of the carboxylic acid component and the base component,
the glycol compound contains ethylene glycol, and
a proportion of ethylene glycol in the glycol compound is 30% by mass or more.