公开(公告)号：EP4386796A1

公开(公告)日：2024-06-19

申请号：EP22214355.4

申请日：2022-12-16

申请人： Heraeus Epurio GmbH

发明人： Ishikawa, Akio ,  Merker, Udo

IPC分类号： H01G9/00 ,  H01G9/028 ,  H01G9/052 ,  H01G9/025 ,  H01G9/15 ,  H01G9/055 ,  H01G9/07

CPC分类号： H01G9/0036 ,  H01G9/028 ,  H01G9/15 ,  H01G9/0525 ,  H01G9/055 ,  H01G9/151 ,  H01G9/025

摘要： The present invention relates to a process for manufacturing a capacitor, comprising the process steps:
a) provision of a porous electrode body (1) made of an electrode material (2), wherein a dielectric (3) at least partially covers a surface of this electrode material (2);
b) introduction of a liquid composition which comprises an electrically conductive polymer and a dispersing agent into at least a part of the porous electrode body (1) provided in process step a), wherein a conductive layer made from the liquid composition has a conductivity of less than 100 S/cm;
c) at least partial removal of the dispersing agent from the porous electrode body (1) obtained in process step b) for the formation of a solid electrolyte layer (4) that at least partially covers a surface of the dielectric (3);
d) filling at least a part of the pores (5) of the porous electrode body (1) obtained in process step c) with an impregnation solution comprising at least one impregnation solvent, wherein the at least one impregnation solvent has a boiling point (determined at 1013 hPa) of at least 150°C;
e) encapsulation of the porous electrode body (1) obtained in process step d);
f) heating the encapsulated electrode body obtained in process step e) at a temperature of higher than 50°C for more than 10 minutes.
The invention also relates to capacitor manufactured with this process, to the use of an electrolytic capacitor and to electronic circuits.