Conductive paste for solid electrolytic capacitor electrode and process for producing solid electrolytic capacitor electrode using the same
View Patent ↗A conductive paste for a solid electrolytic capacitor electrode contains an electroconductive powder having a mean particle size of no more than 1 μm and at least 90% thereof having a particle size of at least 0.3 μm; an organic binder; and a solvent.
1. A process for producing an electrode of a solid electrolytic capacitor, comprising the steps of:
providing an anode body having an oxide film acting as a dielectric formed on the surface thereof;
forming a solid electrolyte layer on the anode body;
applying, directly to the solid electrolyte layer, a conductive paste for a solid electrolytic capacitor electrode comprising an electroconductive powder with a mean particle size no more than 1 μm and at least 90% thereof having a particle size of at least 0.3 μm, an organic binder and a solvent, to form a conductive paste layer; and
drying the conductive paste layer to form a conductive layer.
2. The process for producing the electrode of a solid electrolytic capacitor according to claim 1 , wherein the anode body is selected from the group consisting of tantalum, niobium oxide, aluminum and a mixture thereof.
3. The process for producing the electrode of a solid electrolytic capacitor according to claim 1 , wherein the organic binder in the conductive paste is selected from the group consisting of thermoplastic resins, thermosetting resins and a mixture thereof.
4. The process for producing the electrode of a solid electrolytic capacitor according to claim 1 , wherein the electroconductive powder in the conductive paste is in the form of flakes.