Process for producing polymer capacitors for high reliability applications

A process for manufacturing a capacitor, comprising the process steps:

• a) provision of a porous electrode body made of an electrode material, wherein a dielectric at least partially covers a surface of this electrode material;
• 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 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 obtained in process step b) for the formation of a solid electrolyte layer that at least partially covers a surface of the dielectric;
• d) filling at least a part of the pores of the porous electrode body 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) at least partial removal of the impregnation solvent from the porous electrode body obtained in process step d);
• and
• f) encapsulation of the porous electrode body obtained in process step e).