US 12,340,955 B2
Solid electrolytic capacitor element having improved thermal stability, and solid electrolytic capacitor and method for manufacturing same
Hitoshi Fukui, Saga (JP); and Makoto Nagashima, Kyoto (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 18/001,679
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Jul. 2, 2021, PCT No. PCT/JP2021/025153
§ 371(c)(1), (2) Date Dec. 13, 2022,
PCT Pub. No. WO2022/009800, PCT Pub. Date Jan. 13, 2022.
Claims priority of application No. 2020-117402 (JP), filed on Jul. 7, 2020.
Prior Publication US 2023/0223203 A1, Jul. 13, 2023
Int. Cl. H01G 9/048 (2006.01); H01G 9/00 (2006.01); H01G 9/15 (2006.01)
CPC H01G 9/048 (2013.01) [H01G 9/0032 (2013.01); H01G 9/0036 (2013.01); H01G 9/15 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A solid electrolytic capacitor element comprising:
an anode body that includes a base material part, and a porous part disposed on a main surface of the base material part;
a dielectric layer that is disposed on at least a part of a surface of the anode body; and
a cathode part that covers at least a part of the dielectric layer, wherein:
the cathode part includes a solid electrolyte layer that covers the at least a part of the dielectric layer,
the anode body includes a first part and a second part, the first part being a cathode forming part on which the solid electrolyte layer is formed, the second part being a part on which the solid electrolyte layer is not formed,
the second part includes at least an anode part including an end of the anode body opposite to the first part,
the first part is sectionalized into a plurality of regions,
the porous part in the first part has a groove at a boundary between adjacent regions among the plurality of regions, and
the groove is provided into a part of the base material part from the porous part in a thickness direction of the anode foil.