US 12,136,525 B2
Electrolytic capacitor and method for producing same
Hiroyuki Arima, Osaka Fu (JP); and Takehiro Kobayashi, Osaka Fu (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 17/795,802
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Jan. 29, 2021, PCT No. PCT/JP2021/003234
§ 371(c)(1), (2) Date Jul. 27, 2022,
PCT Pub. No. WO2021/153730, PCT Pub. Date Aug. 5, 2021.
Claims priority of application No. 2020-015779 (JP), filed on Jan. 31, 2020.
Prior Publication US 2023/0078283 A1, Mar. 16, 2023
Int. Cl. H01G 9/028 (2006.01); H01G 9/00 (2006.01)
CPC H01G 9/028 (2013.01) [H01G 9/0036 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An electrolytic capacitor, comprising a capacitor element, wherein
the capacitor element includes an anode body having a dielectric layer formed at a surface of the anode body, and an electrolyte layer disposed adjacent to the dielectric layer,
the electrolyte layer contains a conductive polymer doped with a dopant, conductive particles, and a non-aqueous solvent,
the anode body has a porous portion at the surface,
an average particle diameter of the conductive particles is larger than an average pore diameter of the porous portion,
the conductive polymer is in a particle form, and
an average particle diameter of the conductive polymer is smaller than the average pore diameter of the porous portion.