Solid electrolytic capacitor

Details Solid electrolytic capacitor Solid electrolytic capacitor

2007-12-25

2007-12-25

Ha, Nguyen T. (Department: 2831)

Electricity: electrical systems and devices

Electrolytic systems or devices

Solid electrolytic capacitor

C361S525000, C361S528000, C361S529000, C361S530000, C361S516000, C029S025010, C029S025030

Reexamination Certificate

active

10529128

ABSTRACT:
An anode foil and a cathode foil which has an oxidation film layer on the surface are separated by a separator and wound to form a capacitor element and then anodic forming is performed on this capacitor element. Next, the capacitor element is immersed in a solution of less than 10 wt %, preferably between 2.0 and 9 wt %, more preferably between 5 and 8 wt % of polyimide silicone dissolved in a ketone solvent, and after removing, the solvent is evaporated off at between 40 and 100° C. and heat treating is performed at 150 to 200° C. Next, this capacitor element was immersed in a mixture of polymeric monomer and oxidizing agent and the conductive monomer was made to polymerize in the capacitor element to form a solid electrolyte layer. Furthermore, this capacitor element was stored in an external case and the open end was sealed with sealing rubber to form the solid electrolytic capacitor.

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