公开(公告)号：US20230245836A1

公开(公告)日：2023-08-03

申请号：US18004612

申请日：2021-07-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： MASATOSHI TAKESHITA ,  HIROMI OZAWA ,  YIHAN ZHANG ,  HITOSHI FUKUI

IPC: H01G9/025 ,  H01G9/048 ,  H01G9/15

CPC classification number: H01G9/025 ,  H01G9/048 ,  H01G9/15

Abstract: A solid electrolytic capacitor element includes an anode body, a dielectric layer disposed on a surface of the anode body, and a cathode part covering at least a part of the dielectric layer are provided. The cathode part includes a solid electrolyte layer covering the at least the part of the dielectric layer. The solid electrolyte layer contains a first polymer and a second polymer component. The first polymer component includes a monomer unit corresponding to a thiophene compound. The second polymer component includes a polymer anion. A Raman spectrum of a surface layer in the solid electrolyte layer has a peak characteristic for the first polymer component.