Method of manufacturing solid electrolytic capacitor
View Patent ↗Provided is a method of manufacturing a solid electrolytic capacitor including a capacitor element, the capacitor element having an anode body with a dielectric coating film formed on a surface thereof and a solid electrolyte made of a conductive polymer. The method includes the steps of: forming the capacitor element having the anode body with the dielectric coating film formed on the surface thereof; preparing a polymerization liquid A containing one of a monomer as a precursor of the conductive polymer and an oxidant, and a silane compound; preparing a polymerization liquid B by adding the other of the monomer and the oxidant that is not contained in polymerization liquid A, to polymerization liquid A; and performing polymerization after impregnating the capacitor element with polymerization liquid B.
1. A method of manufacturing a solid electrolytic capacitor including a capacitor element, the capacitor element having an anode body with a dielectric coating film formed on a surface thereof and a solid electrolyte made of a conductive polymer, the method comprising the steps of:
forming the capacitor element having the anode body with the dielectric coating film formed on the surface thereof;
preparing a polymerization liquid A containing a monomer as a precursor of the conductive polymer and a silane compound;
preparing a polymerization liquid B by adding an oxidant to said polymerization liquid A; and
forming said conductive polymer by performing polymerization after impregnating said capacitor element with said polymerization liquid B.
2. A method of manufacturing a solid electrolytic capacitor including a capacitor element, the capacitor element having an anode body with a dielectric coating film formed on a surface thereof and a solid electrolyte made of a conductive polymer, the method comprising the steps of:
forming the capacitor element having the anode body with the dielectric coating film formed on the surface thereof;
preparing a polymerization liquid A containing an oxidant and a silane compound;
preparing a polymerization liquid B by adding a monomer as a precursor of the conductive polymer to said polymerization liquid A; and
forming said conductive polymer by performing polymerization after impregnating said capacitor element with said polymerization liquid B.
3. The method of manufacturing a solid electrolytic capacitor according to claim 1 , wherein the silane compound has a concentration of 5 to 20 wt % relative to a total weight of the monomer as the precursor of the conductive polymer, the oxidant, and the silane compound.
4. The method of manufacturing a solid electrolytic capacitor according to claim 2 , wherein the silane compound has a concentration of 5 to 20 wt % relative to a total weight of the monomer as the precursor of the conductive polymer, the oxidant, and the silane compound.
5. The method of manufacturing a solid electrolytic capacitor according to claim 1 , wherein, in the step of preparing said polymerization liquid B, the oxidant is added to said polymerization liquid A having a temperature of 5 to 40° C.
6. The method of manufacturing a solid electrolytic capacitor according to claim 2 , wherein, in the step of preparing said polymerization liquid B, the monomer as the precursor of the conductive polymer is added to said polymerization liquid A having a temperature of 5 to 40° C.