US 12,424,390 B2
Electrolytic capacitor and method for producing same
Shinji Kondou, Kanagawa Ken (JP); Kazuya Yamasaki, Kyoto Fu (JP); Takashi Kawasaki, Osaka Fu (JP); Koji Yokoyama, Miyagi Ken (JP); Hitoshi Ishimoto, Hyogo Ken (JP); Yoshihisa Nagasaki, Osaka Fu (JP); and Yuji Miyachi, Saga Ken (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 18/549,498
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Mar. 4, 2022, PCT No. PCT/JP2022/009293
§ 371(c)(1), (2) Date Sep. 7, 2023,
PCT Pub. No. WO2022/191050, PCT Pub. Date Sep. 15, 2022.
Claims priority of application No. 2021-040633 (JP), filed on Mar. 12, 2021.
Prior Publication US 2024/0161985 A1, May 16, 2024
Int. Cl. H01G 9/028 (2006.01); H01G 9/00 (2006.01); H01G 9/048 (2006.01); H01G 9/15 (2006.01)
CPC H01G 9/028 (2013.01) [H01G 9/0036 (2013.01); H01G 9/048 (2013.01); H01G 9/15 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electrolytic capacitor comprising:
an anode body;
a dielectric layer that covers the anode body;
a first solid electrolyte layer that covers the dielectric layer; and
a second solid electrolyte layer that covers the first solid electrolyte layer,
wherein the first solid electrolyte layer contains a first conductive polymer that includes polypyrrole as a basic skeleton,
the second solid electrolyte layer contains a second conductive polymer that includes polythiophene as a basic skeleton,
the first solid electrolyte layer has a thickness of 100 nm or less, and
the second solid electrolyte layer has a thickness of 1 μm or more.