Abstract: An electrolytic capacitor includes a capacitor element that includes an anode body that has a porous structure, a dielectric layer disposed on a surface of the anode body, and a solid electrolyte layer that covers at least a part of the dielectric layer. The anode body contains a first group metal including at least one selected from the group consisting of tantalum, niobium, titanium, aluminum, and zirconium. The dielectric layer contains an oxide of the first group metal and a second group metal including at least one selected from the group consisting of iron, chromium, copper, silicon, molybdenum, sodium, and nickel. A ratio X of a total number of atoms of the second group metal to a total number of atoms of the first group metal in the dielectric layer is equal to or less than 100 ppm.

Abstract: An electrolytic capacitor includes a capacitor element, an anode lead terminal, a cathode lead terminal, and a resin outer package. The capacitor element includes an anode part and a cathode part. The anode lead terminal is electrically connected to the anode part. The cathode lead terminal is electrically connected to the cathode part, and has a first main surface and a second main surface opposite to the first main surface. The resin outer package covers the capacitor element. The cathode lead terminal includes a joint part to be joined with the cathode part. The joint part has a recess on the first main surface. In at least one cross-section cutting the recess an being perpendicular to the first main surface, a relation D1<Dmax is satisfied, where D1 represents an opening width of a first opening at the first main surface of the recess, and Dmax represents a maximum width of the recess inside the recess.

Abstract: A wet electrolytic capacitor that contains an anode formed from an anodically oxidized sintered porous body and a fluidic working electrolyte is provided. The casing contains a metal substrate coated an electrochemically-active material. Through a unique and controlled combination of features relating to the capacitor configuration and sealing assembly, the present inventor has discovered that good electrical properties (e.g., ESR stability) can be achieved at relatively high temperatures. One unique feature of the wet electrolytic capacitor that can help achieve such good ESR stability is the presence of a dielectric layer on the metal substrate of the cathode within a controlled thickness range. In other embodiments, a sealing assembly may be employed that contains a hermetic seal (e.g., glass-to-metal seal) and an elastomeric barrier seal formed from a high-temperature elastomeric material.

Abstract: A method of making a sintered article in which a solid object is embedded includes forming a green body of compressed particles with the solid body is partially embedded. The green body includes an opening across which the solid body extends. The green body is sintered to form a sintered body and the opening permits deformation of the solid body in response to stress applied during the sintering process. A sintered article in which a solid body is at least partially embedded includes an opening. The solid body extends across the opening so that the solid body can deform within the opening. The opening in the solid body prevents distortion of the sintered body from a planar configuration during sintering, even when the green body is relatively thin.

Abstract: Methods of preparing an electrode are provided. A metal powder can be sintered onto a portion of a lead wire to form a connection region. An additional metal powder can be de-oxidation sintered onto the connection region to form the electrode. The oxides formed during the de-oxidation sintering are then removed from the electrode.

Abstract: The present invention is an electrochemical double layer capacitor (EDLC) series stack formed into a single electrolyte cell structure. The concatenated multiple electrode assembly stack has electrode assemblies electrically connected in series. The electrode assemblies have a double-sided activated carbon electrode formed on a current collector. Power tabs are connected to the end electrode assemblies. An electrolyte is also provided. A poly bag contains the electrolyte and the electrode assemblies. The electrode assemblies form a double-sided activated-carbon electrode on a current collector. The EDLC stack has a number of segments and mass free zones separating them. The segments are folded so that mass free zones are disposed at the apex of each fold.

Abstract: Disclosed are supercapacitors having organosilicon electrolytes, high surface area/porous electrodes, and optionally organosilicon separators. Electrodes are formed from high surface area material (such as porous carbon nanotubes or carbon nanofibers), which has been impregnated with the electrolyte. These type devices appear particularly suitable for use in electric and hybrid electric vehicles.

Abstract: An electric double layer capacitor is configured as follows. A changeover switch is connected to a positive electrode of the electric double layer capacitor, a power supply or electric load is connected to a terminal a of the changeover switch, and an auxiliary electrode is connected to a terminal b thereof through a resistor. The changeover switch is being switched to the terminal a, and discharge and charge of the electric double layer capacitor are repeated. When a discharge capacity becomes equal to or less than a lower limit threshold or an internal resistance becomes equal to or more than an upper limit threshold, the changeover switch is switched to the terminal b from the terminal a to make a channel between the positive electrode and the auxiliary electrode be a closed circuit through the resistor, and resistance discharge is conducted from the positive electrode.

Abstract: A high reliability and low power consumption anti-lock brake system is disclosed. The two pilot valves are controlled so as not to be energized concurrently. The secondary battery of the anti-lock brake system is charged by a power supply and/or a generator. An electric double layer capacitor having a housing made of functionally graded aluminum ceramic material is used as the secondary battery.

Abstract: An inexpensive and reliable dry process based capacitor and method for making a self-supporting dry electrode film for use therein is disclosed. Also disclosed is an exemplary process for manufacturing an electrode for use in an energy storage device product, the process comprising: supplying dry carbon particles; supplying dry binder; dry mixing the dry carbon particles and dry binder; and dry fibrillizing the dry binder to create a matrix within which to support the dry carbon particles as dry material.

Abstract: An electrode sheet of an electric double layer capacitor is produced by using granules for formation of an electrode of an electric double layer capacitor which are obtained by kneading and then crushing materials including an activated material, a conductive filler, and a binder at 50 to 97 mass-%, 1 to 30 mass-%, and 2 to 20 mass-%, respectively, and which are essentially granules whose diameter is in a range of 47 to 840 ?m. A method for manufacturing a sheet-like electrode by mixing and kneading materials including an activated carbon, carbon black, and PTFE into a kneaded material, producing a forming material by converting the kneaded material into granules, and forming and rolling the forming material.

Abstract: A solid electrolytic capacitor includes a capacitor element in which an anode lead protrudes from one end of an anode member. An anode lead frame is attached to the anode lead by welding. A contact resistance enlarging portion is formed on a junction face of the anode lead frame with the anode lead, the area over which the anode lead frame comes into contact with the anode lead being smaller than the portion other than the junction face.

Abstract: The present invention provides an electrode for an electric double layer capacitor which enhances an adhesive property between an electrode layer and an etched aluminum foil current collector. An electrode for a capacitor, includes a current collector, an undercoat layer on the current collector, and an electrode layer on the undercoat layer, wherein the current collector is made of an aluminum foil; the undercoat layer includes at least electrically conductive particles (P) and a binder (B) in a weight ratio P/B of 0.25 to 2.33, and the binder (B) includes a fluorine-containing polymer as a main component; and the electrode layer includes at least a carbon material and a binder.

Abstract: To provide a capacitor device that can be made lighter in weight, thin shaped, and miniaturized, which has a plurality of conductive pattern electrodes 18 and 22 electrically separated by a separation groove 19; a capacitor element 15 including an anode lead 16 fixed to the one conductive pattern electrode 18 and a cathode lead 17 fixed to the other conductive pattern electrode 22; an insulating resin 24 for covering the capacitor element 15 and a part working as the conductive pattern electrodes 18 and 22 except for a lower face of the conductive pattern electrodes 18 and 22, and for integrally supporting the conductive pattern electrode and the capacitor element.

Abstract: An electrode for a capacitor including a sintered body of a powder of a valve action metal or its alloy and wherein a lead wire connected to the sintered body made of partially nitrided niobium is disclosed. A molded compact including a molded powder of a valve action metal or alloy thereof and a lead wire made of partially nitrided niobium is also disclosed. Use of a partially nitrided niobium as a material of the lead wire provides a capacitor having high withstand voltage and being light weight without a decrease in capacitance.

Abstract: A capacitor comprising two electrodes and a dielectric interposed therebetween, wherein at least one of the electrodes is made of a valve action metal or its alloy and wherein a lead wire connected to the at least one electrode is made of partially nitrided niobium. Use of a partially nitrided niobium as a material of the lead wire gives rise to a capacitor having high withstand voltage and light weight without a decrease in capacitance.

Abstract: A component cell of an electric double layer capacitor is fabricated by forming first and second half portions of the cell. In each of the half portions a polarized electrode impregnated with electrolyte is pasted to a collector electrode so that a stepped portion is formed on the periphery of the collector electrode. A gasket is attached to the stepped portion of each half portion, and a center gasket is attached to the periphery of a separator which is placed between the first and second half portions. Pressure is then applied to the first and second half portions of the cell in directions towards each other at an elevated temperature so that all gaskets are thermally joined together. A plurality of such component cells are stacked in a layered structure and sealed in a package.

Abstract: An electrode component for an electrochemical cell or a capacitor is described wherein the electrode is produced by physical vapor depositing an electrode active material onto a substrate to coat the substrate. The thusly produced electrode is useful as a cathode in a primary electrochemical cell and as a cathode and an anode in a secondary cell, and as an electrode in an electrochemical capacitor and an electrolytic capacitor.

Abstract: A capacitance type humidity detecting sensor has two electrodes opposing each other with a gap interposed therebetween to form a capacitor on a silicon substrate with a silicon oxide film formed on a surface thereof. A moisture-sensitive film is formed so as to cover the two electrodes with a silicon nitride film interposed therebetween. The silicon nitride film protects the two electrodes from moisture passing through the moisture-sensitive film. The capacitance formed between the two electrodes changes in accordance with ambient humidity. A switched capacitor circuit formed in a circuit element portion processes a signal indicative of a change in the capacitance formed between the two electrodes.

Abstract: A capacitor having two electrodes and a dielectric interposed therebetween is disclosed. At least one of the electrodes is made of a valve action metal or its alloy and a lead wire connected to the at least one electrode is made of partially nitrided niobium. Use of a partially nitrided niobium as a material of the lead wire provides a capacitor having high withstand voltage and being light weight without a decrease in capacitance.

Abstract: A chip capacitor has capacitor component 14 having anode lead 17 and sintered body 21 of a metal having a valve action in which anode lead 17 is embedded so as to project from embedding surface 21a, resin-based insulating film layer 24 containing a white pigment and disposed on the embedding surface of capacitor component 14, water-repellent layer 25 disposed on resin-based insulating film layer 24, anode terminal 12 having a portion bent into joint tongue 31, with anode lead 17 being placed on joint tongue 31, joint tongue 31 and anode lead 17 being welded to each other into anode terminal 12, and antireflection member 34 extending from a proximal end of joint tongue 31 of anode terminal 12 toward sintered body 21. When joint tongue 31 and anode lead 17 are welded to each other by a laser beam, antireflection member 34 prevents the laser beam from being reflected from the welded region.

Abstract: A paste is described for the production of sintered refractory metal layers, particularly for electrolytic capacitor anodes, consisting of 40 to 92% by weight of a refractory metal powder as a discrete phase, and of a continuous phase which substantially consists of organic compounds which are synthesised from carbon, oxygen and hydrogen only, wherein the ratio of the number of oxygen atoms to carbon atoms is at least 0.5, and optionally consisting of a solvent which evaporates below 150° C.

Abstract: The anode member for a solid electrolytic capacitor according to the present invention comprises an anode body made of a valve metal foil having a purity of not less than 99 wt %, and an anode layer formed on the anode body and made of a sintered body of a valve metal powder. By limiting the amount of impurity contained in the valve metal foil to an amount of not more than 1 wt %, impurities in a dielectric oxide film formed by anodic oxidation, namely defects in the dielectric oxide film can be suppressed, so that the resultant solid electrolytic capacitor can have its leakage current lowered with its ESR (equivalent series resistance) being kept low, and that the electrolytic capacitor can be made to have a smaller size and a higher capacitance. The present invention also provides an electrolytic capacitor having a low leakage current, a low ESR, a small size and a high capacitance by using the above novel anode member as well as a method of making the same.

Abstract: A first mold die and a second mold die are moved together and are shaped to define a mold cavity therebetween. A capacitor pellet is positioned within the mold cavity and a plurality of projections extend inwardly to engage the capacitor pellet and hold it spaced away from the cavity side wall.

Abstract: There is provided a ground check system used with an input module and/or sort module of a test handler for checking automatically grounding wires associated with moving parts thereof. The ground check system includes a sensing circuit which is responsive to ESD voltages associated with the grounding wires and to a reference voltage for generating an output voltage. A visual indicator device is mounted on the input module and/or sort module of the test handler and is responsive to the output voltage for alerting an operator of a malfunction in the grounding wires. An output buffer section is also responsive to the output voltage for shutting down the input module and/or sort module when there is a malfunction in the grounding wires.

Abstract: A solid electrolytic capacitor of the present invention includes a positive electrode body, a dielectric layer disposed on the surface of the positive electrode body, a solid electrolyte layer disposed on the surface of the dielectric layer, a negative electrode layer disposed on the surface of the solid electrolyte layer, a positive electrode terminal electrically connected to the positive electrode body, and a negative electrode terminal electrically connected to the negative electrode layer, wherein the negative electrode layer includes a carbon layer and a conductor layer, and the carbon layer contains carbon particles and a benzene compound shown by the chemical formula 1. The whole is covered with facing resin while exposing the positive electrode terminal led out of the positive electrode body and the negative electrode terminal led out of the negative electrode layer. With this configuration, the carbon layer formed is fine and uniform.

Abstract: A capacitor element and a battery cell which a dry-up phenomenon is restricted and an internal resistance is small are provided. The capacitor element provides a porous separator which has ion permeability and the ability of insulation, a pair of carbon electrode layers having many successive through holes separated by the porous separator, a non-conductive gasket holding the surrounding ends of the carbon electrode layers, a pair of conductive separators holding the carbon electrode layers and the non-conductive gasket from the outside, electrolyte solution in the successive through holes of the carbon electrode layers, and minute particles which are more than 0.1 weight % and less than 5.0 weight % of the electrolyte solution. A battery cell provides electrolyte solution and positive/negative electrode active material layers containing minute particles which are more than 0.1 weight % and less than 5.0 weight % of the electrolyte solution in the successive through holes.