Patent ID: 11955294
Assignee: KYOCERA AVX COMPONENTS CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A solid electrolytic capacitor comprising a capacitor element, wherein the capacitor element comprises:
a sintered porous anode body that is formed from a powder having a specific charge of from about 10,000 μF*V/g to about 70,000 μF*V/g;
a dielectric that overlies the anode body, formed by anodically oxidizing the sintered porous anode body;
a conductive polymer coating that overlies the dielectric, wherein the conductive polymer coating contains poly(4-(2,3-dihydrothieno-[3,4-b][1,4]dioxin-2-ylmethoxy)-1-butane-sulphonic acid;
a solid electrolyte that overlies the conductive polymer coating, wherein the solid electrolyte includes:
i) at least one inner layer that overlies the conductive polymer coating, wherein the inner layer is generally free of extrinsically conductive polymers and includes an intrinsically conductive polymer containing repeating thiophene units of the following general formula (1) and/or (2):, , wherein,
X1 and X2 are independently hydrogen, an optionally substituted alkyl, optionally substituted alkoxy, optionally substituted alkylene oxide, optionally substituted thiocyano, optionally substituted thioalkyl, or optionally substituted amino, or wherein X1 and X2 are combined to form an optionally substituted alkylenedioxy or an optionally substituted alkylenedithio group; and
R is an optionally substituted alkyl, optionally substituted alkoxy, optionally substituted alkylene oxide, optionally substituted aryl optionally substituted heterocyclyl, optionally substituted condensed ring group, or a salt or acid of any of the foregoing; and
ii) at least one outer layer that overlies the inner layer, wherein the outer layer includes conductive polymer particles containing a complex of an extrinsically conductive thiophene polymer and a counterion; and

an external polymer coating that overlies the solid electrolyte and includes conductive polymer particles containing a complex of an extrinsically conductive thiophene polymer and a counterion;
wherein the capacitor exhibits a capacitance recovery of about 90% or more.