A liquid component for an electrolytic capacitor includes at least one central atom selected from the group consisting of boron, aluminum, and silicon, and a ligand having a plurality of ligand atoms bonded to the central atom. The ligand atoms are at least one selected from the group consisting of oxygen and nitrogen, and are bonded to a carbon atom having no oxo group.

An electrolytic capacitor including: a resin molding including a capacitor element with an anode, a dielectric layer, and a cathode, and a sealing resin sealing the capacitor element; a first external electrode on a first end surface; and a second external electrode connected to the cathode at a second end surface and including a first electrode portion on a first side surface and having a first electrode end in contact with the first side surface and closest to the first end surface in the length direction, and, when viewed in a thickness direction, a region where the capacitor element is opposite to the first electrode portion in a width direction includes a first region where a distance in the width direction between the capacitor element and the first electrode portion is shorter than a distance in the width direction between the capacitor element and the first electrode end.

A method of manufacturing high capacitance anode and cathode films of capacitors is revealed. Perform sputter deposition on a cathode aluminum foil in a vacuum chamber to form a cathode metal layer which is a titanium layer on a surface of the cathode aluminum foil. Then titanium continuously reacts with nitrogen to form cathode columnar crystal deposition on a surface of the cathode metal layer and get a cathode film. Perform sputter deposition on an anode aluminum foil in a vacuum chamber to form an anode metal layer which is a titanium layer on a surface of the anode aluminum foil. Then titanium continuously reacts with oxygen and nitrogen to form anode columnar crystal deposition on a surface of the anode metal layer and get an anode film. Next use the cathode and anode films with high capacitance to form cathode and anode electrodes of the capacitor.

Transition-metal doped Li-rich anti-perovskite cathode compositions are provided herein. The Li-rich anti-perovskite cathode compositions have a chemical formula of Li.sub.(3-δ)M5/.sub.mBA, wherein 0<δ<3m/(m+1) and δ=3m/(m+1) is the maximum value for the transition metals doping, a chemical formula of Li.sub.4-δMs.sub.δ/mPC.sub.4A, wherein 0<δ≦4m/(m+1) and δ=4m/(m+1) is the maximum value for the transition metals doping, or a combination thereof, wherein M is a transition metal, B is a divalent anion, and A is a monovalent anion. Also provided herein, are methods of making the Li-rich anti-perovskite cathode compositions, and uses of the Li-rich anti-perovskite cathode compositions.

A capacitor element includes an anode body including a porous region located at a surface of the anode body, a dielectric layer that covers at least a part of the anode body, and a cathode layer that covers at least a part of the dielectric layer. The anode body includes an anode part and a cathode formation part on which the cathode layer is disposed, the cathode formation part being adjacent to the anode part. At least a part of the porous region of the anode part includes a thin-thickness region that is thinner than the porous region in the cathode formation part, and a metal substrate is stacked on at least a part of the thin-thickness region. The metal substrate is denser than the porous region in the cathode formation part.

According to one embodiment, an aluminum electrolytic capacitor includes an anode, a cathode, and a fiber film. The anode includes a first metal layer and a dielectric layer. The first metal layer includes aluminum. The dielectric layer is formed on the first metal layer. The cathode includes a second metal layer. The second metal layer includes aluminum. The fiber film is provided between the anode and the cathode. The fiber film includes a first layer and a second layer. The first layer includes a first fiber having a first diameter. The first layer is provided between the dielectric layer and the second layer. The second layer includes a second fiber having a second diameter smaller than the first diameter.

A method of manufacturing a solid electrolytic capacitor according to the exemplary embodiment of the present disclosure includes a step of exposing a cathode body end portion, which is a portion of a cathode body, from an exterior body covering the cathode body, which is a conductor, and forming a contact electrode, which is a metal film, on the exposed cathode body end portion.

Provided is a hybrid electrolytic capacitor having large capacitance, low ESR, and superior high-frequency characteristics and high-temperature endurance. The hybrid electrolytic capacitor 1 is provided with: a cathode 10 having a cathode substrate 11 made of a valve metal, an oxide layer 12 provided on a surface of the cathode substrate 11, an inorganic conductive layer 13 provided on a surface of the oxide layer 12 and including an inorganic conductive material, and an organic conductive layer 14 provided on a surface of the inorganic conductive layer 13 and including a conductive polymer; an anode 20 having an anode substrate 21 made of a valve metal and a dielectric layer 22 provided on a surface of the anode substrate 21; and a composite electrolyte layer 30 having a solid electrolyte layer 31 containing conductive polymer particles 31a which is provided between and in contact with the organic conductive layer 14 of the cathode 10 and the dielectric layer 22 of the anode 20, and an electrolytic solution 32 filled between the conductive polymer particles 31a in the solid electrolyte layer 31.

Many electronic devices may employ electrolytic polymer capacitors in their power supplies for noise filtering, decoupling/bypassing, frequency conversion and DC-DC and AC-DC conversion. However, some polymer capacitors exhibit an anomalous charging current phenomenon, which may prevent proper charging and cause failure in power circuits of the electronic devices. Disclosed herein are polymer capacitors that have a wide band gap material layer between an insulator/dielectric and a polymer cathode, a charge depletion region in the insulator/dielectric, or both, that may mitigate the anomalous charging current.

An electrolytic capacitor that includes: a cuboid resin molded body having a first end surface and a second end surface opposite to each other; a first external electrode on the first end surface and electrically connected to an exposed end of an anode; and a second external electrode on the second end surface and electrically connected to an exposed end of a cathode, wherein at least one of the first and second external electrodes has a multilayer structure including: an inner plating layer; and a resin electrode layer on the inner plating layer and containing a resin component and at least one metal selected from Ni, Cu, and Ag, and a total number of layers defining each of the first and second external electrodes is four or less.