US 12,462,986 B2
Electrolytic capacitor and method for producing same
Shinji Kondou, Kanagawa (JP); Kazuya Yamasaki, Kyoto (JP); Takashi Kawasaki, Osaka (JP); Koji Yokoyama, Miyagi (JP); Hitoshi Ishimoto, Hyogo (JP); Yoshihisa Nagasaki, Osaka (JP); and Yuji Miyachi, Saga (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 18/553,176
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Apr. 12, 2022, PCT No. PCT/JP2022/017574
§ 371(c)(1), (2) Date Sep. 28, 2023,
PCT Pub. No. WO2022/220235, PCT Pub. Date Oct. 20, 2022.
Claims priority of application No. 2021-069303 (JP), filed on Apr. 15, 2021.
Prior Publication US 2024/0177940 A1, May 30, 2024
Int. Cl. H01G 9/028 (2006.01); H01G 9/00 (2006.01); H01G 9/15 (2006.01)
CPC H01G 9/028 (2013.01) [H01G 9/0036 (2013.01); H01G 9/15 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An electrolytic capacitor comprising:
an anode body;
a dielectric layer covering the anode body;
a first solid electrolyte layer covering the dielectric layer; and
a second solid electrolyte layer covering the first solid electrolyte layer,
wherein:
the first solid electrolyte layer contains a first conductive polymer being a self-doped type conductive polymer including polythiophene as a basic skeleton and having a conductivity of less than or equal to 2 S/cm,
the second solid electrolyte layer contains a second conductive polymer including polypyrrole as a basic skeleton, and
a conductivity of the first solid electrolyte layer is less than or equal to 2 S/cm.