Various embodiments of an electrical component and a method of forming such component are disclosed. The electrical component includes a substrate having a first major surface, a second major surface, and a cavity disposed in the substrate. The cavity extends between the first major surface and the second major surface. The electrical component also includes an anode electrode that includes a conductive foil layer disposed on the second major surface of the substrate and over the cavity. Tantalum material is disposed within the cavity and includes tantalum particles. A dielectric layer is disposed on the tantalum particles, and an electrolyte cathode layer is disposed on the dielectric layer. The electrical component also includes a cathode electrode disposed over the cavity.

Various embodiments of an electrical component and a method of forming such component are disclosed. The electrical component includes a substrate having a first major surface, a second major surface, and cavity disposed in the substrate. The cavity extends between the first major surface and a recessed surface. Tantalum material is disposed within the cavity. Further, the tantalum material includes tantalum particles. The electrical component also includes a dielectric layer disposed on the tantalum particles and an electrolyte cathode layer disposed on the dielectric layer. The electrical component further includes a cathode electrode disposed on the electrolyte cathode layer and over the cavity.

A capacitor and methods of processing an anode metal foil are presented. The capacitor includes a housing, one or more anodes disposed within the housing, one or more cathodes disposed within the housing, one or more separators disposed between an adjacent anode and cathode, and an electrolyte disposed around the one or more anodes, one or more cathodes, and one or more separators within the housing. The one or more anodes each include a metal foil that includes a first plurality of tunnels through a thickness of the metal foil in a first ordered arrangement, the first ordered arrangement being a close packed hexagonal array arrangement, and having a first diameter, and a second plurality of tunnels through the thickness of the metal foil having a second ordered arrangement and a second diameter greater than the first diameter.

The invention relates to a method for producing electrode foils (1) for capacitors (10), comprising the method steps of: A) providing a metal foil (1), B) transferring microstructures (2) located on a stamping die onto a main surface of the metal foil by a reforming process.

An electrolytic capacitor includes a capacitor element. The capacitor element includes an anode including a dielectric layer thereon and a cathode member including a conductive polymer and in contact with the dielectric layer. The capacitor element is impregnated with a liquid containing at least one of polyalkylene glycol and derivatives of polyalkylene glycol. The liquid further contains an oxidation inhibitor.

An electrolytic capacitor includes a capacitor element. The capacitor element includes an anode including a dielectric layer thereon and a cathode member including a conductive polymer and in contact with the dielectric layer. The capacitor element is impregnated with a liquid containing at least one of polyalkylene glycol and derivatives of polyalkylene glycol. The liquid further contains an oxidation inhibitor.

A method of manufacturing an aluminum electrolytic capacitor includes impregnating an aluminum electrolytic capacitor with a first electrolyte to form a first impregnated capacitor, aging the first impregnated capacitor using a first aging process to form a first aged capacitor, impregnating the first aged capacitor with a second electrolyte to form a second impregnated capacitor, the second electrolyte being different from the first electrolyte, aging the second impregnated capacitor using a final aging process to form a final aged capacitor, and impregnating the final aged capacitor with a third electrolyte.

An electrolytic capacitor includes a capacitor element, a solid electrolyte layer, an electrolyte solution. The capacitor element has an anode foil with a dielectric layer, and a cathode foil. The solid electrolyte layer is provided between the anode foil and the cathode foil. And the capacitor element is impregnated with the electrolyte solution. The cathode foil includes a covering layer that contains at least one metal selected from titanium and nickel or a compound of the at least one metal. And the solid electrolyte layer contains a conductive polymer, a polymer dopant, and a base component.

A device includes an electrode stack including a plurality of conductive anodes, a plurality of conductive cathodes, a plurality of separators arranged between the conductive anodes and the conductive cathodes, and a dielectric material disposed on a surface of each of the conductive anodes. The stack has a top surface, a bottom surface, and an edge extending between the top surface and the bottom surface. A continuous electrically insulating film overlies the edge, peripheral portions of the top surface and peripheral portions of the bottom surface so that a central portion of the top surface and a central portion of the bottom surface are exposed. An electrolyte is disposed between the conductive anodes and the conductive cathodes.

A device includes an electrode stack including a plurality of conductive anodes, a plurality of conductive cathodes, a plurality of separators arranged between the conductive anodes and the conductive cathodes, and a dielectric material disposed on a surface of each of the conductive anodes. The stack has a top surface, a bottom surface, and an edge extending between the top surface and the bottom surface. A continuous electrically insulating film overlies the edge, peripheral portions of the top surface and peripheral portions of the bottom surface so that a central portion of the top surface and a central portion of the bottom surface are exposed. An electrolyte is disposed between the conductive anodes and the conductive cathodes.