公开(公告)号：US20200090874A1

公开(公告)日：2020-03-19

申请号：US16472980

申请日：2017-09-29

Applicant: SHOWA DENKO K.K.

Inventor： Takeshi KAWAMOTO ,  Yuka NIIMI ,  Toshiya KAWASAKI ,  Yoshinori SHIBUYA ,  Takeshi KOHAMA

IPC: H01G9/00 ,  C08G61/12 ,  H01G9/15 ,  H01G9/028 ,  H01G9/048

Abstract: A method of producing a solid electrolytic capacitor, including a step of forming a dielectric film on the surface of a valve-acting metal having fine pores and a step of forming a solid electrolyte layer containing a conductive polymer on the dielectric film; wherein the solid electrolyte layer containing the conductive polymer is formed without using an oxidizing agent by: (i) a method of polymerizing at least one of the compounds (A1) represented by formula (1) disclosed herein in the presence of a compound (B) having a sulfo group; (ii) a method of copolymerizing at least one compound (A2) represented by formula (2) disclosed herein; and (iii) a method of polymerizing at least one of the compounds (A1) and (A2).