Abstract: A polarizing electrode for an electric double layer capacitor has good moldability and can achieving higher density of electrode and higher capacity, and an electric double layer capacitor employs the same. The electric double layer capacitor is made of an activated carbon obtained by activating a hard-to-graphitize material (for example, phenol resin) with water vapor, and the activated carbon has a median particle size within a range from 4 ?m to 8 ?m in the particle size distribution and at least a peak observed on the side of smaller particle size than the median particle size in the particle size distribution.

Abstract: By using the polarized electrode for electric double layer capacitor of the present invention, which is produced by mixing powdery activated carbon with a binder, and is characterized by the concentration of an organic compound being not more than 300 (ppm), the amount of organic compounds which remain in the pore of the powdery activated carbon decrease, and a possibility of forming the electric double layer by adsorption of electrolytic ion can be prevented. Thereby, an electric double layer is sufficiently formed inside the pore of the powdery activated carbon, and the diffusion resistance between the powdery activated carbon and the electrolyte becomes low. By constituting as such, an electric double layer capacitor with a large electrostatic capacity and a little internal resistance can be obtained.

Abstract: The present invention provides a secondary battery and a capacitor which may provide an excellent high rate and cycle characteristic as well as sufficient electromotive force and capacity. The secondary battery and a capacitor have an active material of an electrode comprising a trimer compound comprising three units of indole or indole derivatives in condensed ring form, wherein the second position and the third position of each unit form a six-membered ring, and a proton which can be utilized as a charge carrier of the trimer compound.

Abstract: An electric double layer capacitor is provided with a cell, in which a pair of polarizable electrodes, which are impregnated with an electrolyte, are disposed in opposition on either side of a separator; wherein the polarizable electrodes are provided with collector electrodes, and a peripheral portion of the cell is sealed by a sealing member composed of synthetic resin. The collector electrodes are composed of an alloy made of crystal grains of differing components and the collector electrodes pass through the sealing member while in intimate contact with the sealing member, extending to the outside of the sealing member. A metal plated layer made of crystal grains of a single component is formed on those locations on the collector electrodes that pass through the sealing member.

Abstract: A solid electrolytic capacitor includes an anode body formed with a dielectric oxide film, a laminate cathode provided on the dielectric oxide film, a cathode lead frame provided on the cathode, and an anode lead frame attached to a lead portion of the anode body. The laminate cathode includes a solid electrolyte layer, and a mixture layer of a mixture of silver flake particles and carbon particles provided directly on an outer surface of the solid electrolyte layer.

Abstract: A capacitor having a tantalum or tantalum alloy electrode as one of the electrodes with an outgoing lead wire composed of a novel niobium alloy. According to the present invention, a capacitor having good heat resistance property can be inexpensively provided without reducing the capacitance.

Abstract: A capacitor in an implantable medical device is provided. The capacitor having an anode, a cathode including a conductive coating, and an electrolyte disposed and in contact between the anode and the cathode. The conductive coating is composed of a chemisorbed conductive layer that is interposed between a metal substrate and a layer including a mix of activated carbon with a metal-oxide and electrolyte disposed and in contact between the anode and the cathode.

Abstract: The solid electrolytic capacitor of the invention is provided with a first electrode layer and a second electrode layer between which are disposed a dielectric layer formed on the surface of the first electrode layer, and a solid electrolyte layer. The solid electrolyte layer is formed adjacent to the dielectric layer, and it is made of a solid electrolyte containing a conjugated polymer compound and a polymer compound having a proton-donating functional group. Repaired sections are formed in the solid electrolytic capacitor as damaged sections generated in the dielectric layer undergo self-repair due to the metal oxidation power or oxidation catalyzing power of the solid electrolyte. It is thereby possible to reduce deterioration with time and sufficiently inhibit defects and short circuits between electrodes.

Abstract: The present invention relates generally to capacitor cells and the utilization of separator materials that interact with one or more surfactants in such cells. More specifically, the present invention is related to capacitor cells that include separators that are impregnated with a surfactant or that absorb and/or interact with a surfactant that is included in an electrolyte placed within the capacitor cell.

Abstract: This invention relates generally to capacitor cells and the utilization of enhanced metalized separators in such cells. The metalized separators of the present invention generally include a separator base material, such as a Kraft paper, track etched material, or a microporous polymeric sheet, that supports a cathode and/or anode film operably adjoined to one or both surfaces.

Abstract: A solid electrolytic capacitor has a structure in which a dielectric layer and a metal layer are formed in this order on the surface of an anode. The anode is composed of a porous sinter of tantalum particles. The dielectric layer is composed of a dielectric oxide film formed by anodizing the surface of the anode in an aqueous solution consisting of phosphoric acid, for example. The metal layer is formed by preparing a silver paste by mixing silver particles having an average particle diameter of not larger than 0.05 ?m, a protective colloid, and an organic solvent, and applying the silver paste on the surface of the dielectric layer, and drying the silver paste at a temperature of 150° C. or higher. Further, the anode is connected with an anode terminal, and the metal layer is connected with a cathode terminal through a conductive adhesive.

Abstract: Flat electrolytic capacitors, particularly, for use in implantable medical devices (IMDs), and the methods of fabrication of same are disclosed. The capacitors are formed with an electrode stack assembly comprising a plurality of stacked capacitor layers each comprising an anode sub-assembly of at least one anode layer, a cathode layer and separator layers wherein the anode and cathode layers have differing dimensions that avoid electrical short circuits between peripheral edges of adjacent anode and cathode layers but maximize anode electrode surface area.

Abstract: A capacitor and a method for assembling a capacitor. A capacitor is assembled from a case, which contains an anode that is electrically insulated from the case by isolators. A washer is placed above the anode. This washer transfers force from a capacitor cap to the isolators and anode, securing the anode in place. A cap is placed on the case. The cap may be shaped as a toroid with an outer and an inner annular wall. The annular walls may meet at the top and have an opening at the bottom creating a cap cavity in order to store electrolyte or other materials in the cap. The cap also supports a glass seal that insulates the lead tube and lead wire coming from the anode. Once assembled, the capacitor is filled with electrolyte. A weld extends around the cap to secure the cap to the case. The weld may be administered from the top of the capacitor.

Abstract: A niobium powder for a capacitor having a tapping density of 0.5 to 2.5 g/ml, and average particle size of 10 to 1000 ?mum, angle of repose form 10° to 60°, the BET specific surface area from 0.5 to 40 m2/g and a plurity of pore diameter peak tops in the pore distribution, and a producing method therof; (2) a niobium sintered body, which is obtained by sintering the above niobium powder and, having a plurality of pore diameter peak tops in a range of 0.01 ?mum to 500 ?mum, preferably, the peak tops of two peaks among the plurality of pore diameter peak tops having a highest relative intensity are present in the range of 0.2 to 0.7 ?mum and in the range of 0.7 to 3 ?mum, respectively, and a producing method thereof; (3) a capacitor using the above sintered body and a producing method thereof, and (4) an electronic circuit and electronic device using the above capacitor.

Abstract: An anode member is provided which includes a valve metal thin plate and a valve metal powder layer formed on at least one plate surface of the valve metal thin plate. At least one groove is formed in the valve metal powder layer, and the valve metal under powder layer having the at least one groove formed therein is sintered to form the anode member.

Abstract: Implantable medical devices (IMDs) and components, including flat electrolytic capacitors and methods of making and using same, particularly an improved electrolytic capacitor fabricated of an electrode stack assembly comprising a plurality of capacitor layers stacked in registration upon one another. Each capacitor layer comprises a valve metal cathode layer having a cathode tab, a valve metal anode layer having an anode tab, and a separator layer located between the cathode layers. The anode layer is assembled from a plurality of valve metal anode sheets that are etched and anodized, stacked side-by-side, and electrically and mechanically joined together by laser weld beads. A valve metal anode tab having a thickness equal to one or more anode sheet is inserted into a tab notch in one or more stacked anode sheet and joined to the anode sheet stack by laser welding the tab and sheet edges together.

Abstract: A charge storage device comprising: a first electrode; a second electrode being opposed to and spaced apart from the first electrode; a porous separator disposed between the electrodes; a sealed package for containing the electrodes, the separator and an electrolyte in which the electrodes are immersed; and a first terminal and a second terminal being electrically connected to the first electrode and the second electrode respectively and both extending from the package to allow external electrical connection to the respective electrodes, wherein the gravimetric FOM of the device is greater than about 2.1 Watts/gram.

Abstract: An anode (14, 208, 410) and/or cathode (12, 212, 420) of a capacitor has a large surface area. The high surface area of the anode is provided by forming the anode from a thin, electrically conductive layer (16) formed from metal particles (18) or an electrically conductive metallic sponge (416). These materials provide a porous structure with a large surface area of high accessibility. The particles are preferably directional or non-directional sponge particles of a metal, such as titanium. The conductive layer has a dielectric film (36, 236, 414) on its surface, formed by anodizing the particle surfaces. The dielectric film has a combination of high dielectric constant and high dielectric strength. The cathode (12, 212, 420) of the capacitor is either a conventional solid material or, more preferably, has a large surface provided by forming the surface from a sponge or particles analogously to the anode.

Abstract: The invention provides a process for fabricating a solid electrolytic capacitor of the chip type which process includes the steps of plating a fabrication frame comprising an anode terminal member and a cathode terminal member projecting from a pair of side frame members respectively so as to be opposed to each other, the anode terminal member being stepped so as to provide a lower portion toward the cathode terminal member, a hole extending vertically and being formed in each of the anode terminal member and a higher portion of the cathode terminal member, joining an anode lead of a capacitor element to an upper surface of the cathode terminal member and a bottom surface of the capacitor element to an upper surface of the lower portion of the cathode terminal member, forming a packaging resin portion around the capacitor element without permitting resin to ingress into the holes, and cutting the anode and cathode terminal members along vertical planes extending through the respective holes.

Abstract: A capacitor includes an anode body, a dielectric layer adjacent to the anode body, a cathode layer adjacent to the dielectric layer, and an enclosure that substantially encloses the anode body, the dielectric layer, and the cathode body. The enclosure has an upper side and an underside and is made of a castable material. The capacitor includes an anode contact having a contact section on the underside of the enclosure, an anode conductor that connects the anode body to the anode contact, and a cathode conductor that contacts the cathode layer and that exits the enclosure. The cathode conductor is a plate having holes at a portion of the cathode conductor inside the enclosure. The holes are at least partially filled with castable material.

Abstract: An electrolyte for a capacitor and capacitor containing the electrolyte. The electrolyte has up to about 85%, by weight, water, up to about 65%, by weight organic solvent and an acid defined by HOOC—(CH2)x—COOH wherein x is 3, 5, 7 or 9, and ammonium hydroxide.

Abstract: A raw material composite 10 for a carbon material used in an electric double layer capacitor contains microcrystalline carbon having a layered crystal structure similar to graphite, and is formed a carbon material for an electric double layer capacitor by undergoing an activation treatment. Here, the raw material composite is characterized in that a Hardgrove grindability index HGI defined by ASTMD-409-71 is 50 or above, an interlayer distance d002 of the microcrystalline carbon determined by an X-ray diffraction method is 0.343 NM or below, and a crystallite size Lc002 of the microcrystalline carbon determined by the X-ray diffraction method is 3.0 nm or below.

Abstract: The present invention relates to a method of manufacturing a flat aluminum electrolytic capacitor comprising a separator impregnated with an electrolytic solution, an anode foil and a cathode foil, a flat capacitor element that has external lead-out terminals connected respectively to the anode foil and the cathode foil, and a flexible casing that houses the capacitor element and is hermetically sealed, said method comprising the steps of encasing the capacitor element in the flexible casing and applying aging treatment before hermetically sealing the casing, and hermetically sealing the flexible casing, and also relates to a flat aluminum electrolytic capacitor comprising a separator impregnated with the electrolytic solution, the anode foil and the cathode foil, the flat capacitor element that has the external lead-out terminals connected respectively to the anode foil and the cathode foil, and the flexible casing that houses the capacitor element and is hermetically sealed, wherein the electrolytic capacit

Abstract: The invention provides a solid electrolytic capacitor which comprises a capacitor element including an anode body having an anode leading member, and a dielectric coating layer, a solid electrolyte layer and a cathode leading layer which are formed successively over a surface of the anode body. The anode leading member has an anode terminal member connected thereto, the cathode leading layer has a cathode terminal member connected thereto, and the capacitor element is covered with a packaging resin portion. The cathode terminal member is connected to the cathode leading layer with current control means provided therebetween. The current control means comprises a current control layer reversibly increasable in electrical resistance with overcurrent or excessive heat, and a pair of electrode members each in the form of a plate or foil and having the current control layer sandwiched therebetween. The electrode members are joined to the cathode leading layer and the cathode terminal member, respectively.

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 aluminum material for electrolytic capacitor electrodes, the aluminum material having aluminum purity of 99.9% or more, consisting of: Si: 2 to 50 ppm; Fe; 2 to 50 ppm; Cu: 15 to 150 ppm; Zn: 1 to 80 ppm; Pb: 0.1 to 3 ppm; at least one of Zr and V: 11 ppm or more, a total content of the at least one of Zr and V being 11 to 100 ppm; and the balance being Al and impurities, wherein a content of B is controlled to be 2 ppm or less. In the aluminum material, Ti: 1 to 30 ppm, Mn group composition (at least one of Mn, Ga, Mg and Ca): 1 to 50 ppm in total, and In group composition (at least one of In, Sn, Sb): 1 to 30 ppm in total are selectively added. A method for manufacturing an aluminum foil for electrolytic capacitor electrodes according to the present invention, comprises the steps of: rolling the aforementioned aluminum material into a foil; and performing final annealing of the foil at the temperature of 430 to 580° C.

Abstract: A dielectric oxide film is formed on the surface of a valve metal plate formed of aluminum and a conductive polymer layer is provided so as to cover the valve metal plate and the dielectric oxide film. The conductive polymer layer is formed of polyaniline having para-toluenesulfonic acid as a dopant. A conductive carbon paste layer and a silver paste layer are provided at the outer side of the conductive polymer layer and a metal plate, comprising a copper foil, is overlapped onto the silver paste layer. Anode lead terminals are connected to the ends of the valve metal plate and the respective end parts of the metal plate are arranged as cathode lead terminals. A shield strip line device, which is low in impedance, especially in high-frequency ranges of 100 MHz or more, and is favorably adapted to high speed and high frequencies, mainly for use as a bypass device for a noise filter or as a decoupling device, is thus obtained.

Abstract: An electric double layer capacitor, including at least one basic cell, an electrode plate, and an outer package which covers the basic cell and the electrode plate in a decompression state. The basic cell may be laminated in its thickness direction to form a layered cell and includes a separator, a pair of polarized electrodes disposed so as to sandwich the separator, a pair of collectors disposed so as to sandwich the polarized electrodes, and a gasket disposed between the pair of collectors so as to surround the pair of polarized electrodes. The electrode plate body is attached to each of the collectors located at the outermost side in a laminated direction of the layered cell. A sealing material having a higher gas barrier property than the collectors is disposed so as to seal an interface between the collectors and the electrode plate in the outer package.

Abstract: A organic electrolytic capacitor comprising a positive electrode, a negative electrode and an aprotic organic solvent of a lithium salt as an electrolytic solution, wherein a positive electrode active material is capable of reversibly holding lithium ions and anions, a negative electrode active material is capable of reversibly holding lithium ions, the negative electrode active material has three times or more capacitance per unit weight as the positive electrode active material, the weight of the positive electrode active material is larger than the weight of the negative electrode active material, and the negative electrode is provided with lithium deposited thereon in advance. Ease of manufacture, high capacity and high withstanding voltage are achieved with this constitution.

Abstract: An electrolytic capacitor comprising an anode, cathode and an electrolyte. The electrolyte comprises: about 35-60%, by weight water; about 10-55%, by weight organic solvent; about 0.05 to 10%, by weight, sulphuric acid; about 0.05 to 10%, by weight, boric acid; and about 0.05 to 10%, by weight, phosphorus oxy acid.

Abstract: A solid electrolytic capacitor including a valve metal positive electrode, an anodized layer formed on a surface of the positive electrode, a conductive polymer-containing negative electrode conductive layer, and a coupling agent layer and a surface active agent layer placed between the anodized layer and the negative electrode conductive layer.

Abstract: A membrane electrode assembly for a polymer electrolyte fuel cell has a polymer electrolyte membrane, an anode, and a cathode having a catalytic layer and a diffusion layer. The alloy catalyst contains ruthenium in the anode diffusion layer. The assembly has less loss of efficiency, particularly when operated at high potentials.

Abstract: Implantable defibrillators are implanted into the chests of patients prone to suffering ventricular fibrillation, a potentially fatal heart condition. A critical component in these devices is an aluminum electrolytic capacitors, which stores and delivers one or more life-saving bursts of electric charge to a fibrillating heart. These capacitors make up about one third the total size of the defibrillators. Unfortunately, conventional manufacturers of these capacitors have paid little or no attention to reducing the size of these capacitors through improved capacitor packaging. Accordingly, the inventors contravened several conventional manufacturing principles and practices to devise unique space-saving packaging that allows dramatic size reduction.

Abstract: A capacitor comprising an aluminum case; a capacitor stack mounted within the aluminum case, the capacitor stack comprising one or more anodes and one or more cathodes, one of the one or more anodes and one or more anodes attached to the aluminum case; wherein the case is adapted to be an active capacitor element. In one aspect, a capacitor includes a case having an etched inner surface, the inner surface including an etched upper inner surface and an etched lower inner surface. The capacitor further includes a capacitor stack disposed within the case, where the capacitor stack includes a plurality of cathode stacks and a plurality of anode stacks, and the cathode stacks are electrically coupled with the etched inner surface. The plurality of anode stacks include a first anode stack disposed adjacent to the upper inner surface.

Abstract: In a second generation fuel cell, hydrogen and oxygen are produced by the chemical dissociation of water with the simultaneous generation of electron charged hydroxyl ions. Alkali metals, termed initiators, and alkaline earths, termed moderators, react exothermally with water in the cathode compartment to generate charged hydroxyl ionic current flow in an amount corresponding to the electrochemical equivalence of the weight of each type material reacted. The ionic electron current flow resulting from the chemical reactions occurring in the cathode compartment is discharged on the outer surfaces of a metal conduit acting as a capacitor plate, and are electrically conducted through its metal wall and deposited on the inner surfaces of the metal conduit. The build up of electron charge on the inner wall reaches a critical potential and emits electrons to receptor hydroxyl ions of the passive receptor anodic electrolyte circuit flowing through the metal conduit.

Abstract: The invention relates to a process for the controlled growth of nanotubes or nanofibers on a substrate, characterized in that it furthermore comprises the production, on the substrate (11), of a bi-layer structure composed of a layer of catalyst material (71), for catalyzing the growth of nanotubes or nanofibers, and a layer of associated material, said associated material being such that it forms a noncatalytic alloy with the catalyst material at high temperature.

Abstract: The present invention relates to a method for producing a niobium-oxide solid electrolytic capacitor comprising an anode being at least one member selected from niobium monoxide, niobium and an alloy mainly comprising niobium, or a mixture of niobium monoxide with niobium or an alloy mainly comprising niobium, which capacitor is formed by the electrolytic oxidation (electrochemical formation) of the anode; and the method comprising sequentially repeating twice or more a step of exposing a dielectric layer to a temperature of 200 to 1,000° C. before formation of a cathode and a step of re-electrochemically forming the dielectric layer.

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 element includes a porous member made of valve metal powder, an anode wire projecting from the porous member, and a cathode layer formed on the porous member. The cathode layer is formed to have a thickness of no less than 35 &mgr;m, and more preferably, no less than 40 &mgr;m.

Abstract: An improved tantalum-carbon capacitor employs activated carbon in place of expensive metals to achieve a large surface area, and therefore higher capacitance, but at substantially lower cost than can be achieved using expensive metals to increase surface area. The capacitor includes a tantalum case, a tantalum anode, a dielectric layer on the anode, an electrolyte in contact with the dielectric layer on the anode, a layer of tantalum carbide on an inner surface of the case, and a layer of activated carbon between the layer of tantalum carbide and the electrolyte.

Abstract: An electrolysis solution for electrolytic capacitors including an aqueous organic solvent consisting of water and a water-compatible organic solvent and 1,6-decane-dicarboxylic acid or salt thereof dissolved therein. The solution further contains one or more additives selected from dinitriles, pivalic acid and salts thereof, diesters, alkylated lactones, cyanoalkanoic esters, monocarbboxylic acids each having a C3-7 alkyl chain and substituted with two C1-4 alkyl groups at the &bgr;-position to the carboxyl group and salts thereof, monocarboxylic acids each having C3-7 alkyl chain and substituted with one ethyl group at the &agr;-position to the carboxyl group and salts thereof, and monocarboxylic acids derived from cyclic saturated compounds each having five or six ring-constituting carbon atoms and salts thereof.

Abstract: A drop-fill assembly and method for uniformly distributing electrode active particles onto a current collector is described. The drop-fill assembly comprises a conduit containing two or more spaced apart sifting screens. A funnel is located upstream of the sifting screens to distribute an electrode active powder into the center of the conduit with a downward velocity. The mesh of any one sifting screen is out of direct alignment with respect to the next or previous screen. The electrode active powder is poured into the funnel and distributed across the conduit's cross-section as it bounces off and passes through the misaligned sifting screens. The powder exits at the bottom of the conduit lying in a thin, uniform layer on a current collector, taking on the shape of the desired electrode due to the boundary of the conduit and pressing fixtures located above and beneath the current collector. The powder layer is then pressed on to the current collector to produce an electrode.

Abstract: The invention features an electrochemical device which includes at least two capacitor electrodes 16, each of which includes a conductive material characterized in that at least ten percent (10%) of the overall surface area of the conductive material is an edge plane. In contrast to a basal plane, the electric field along an edge plane is distorted so as to exhibit an ‘edge effect or ‘fringe effect. Capacitor electrodes 16 with many edges, points, corners, or fractal surfaces exhibit greater capacitance per unit volume or mass amount of capacitor electrode material, than do materials in which the surface area of the material is predominately basal plane. An electrochemical device of the invention can be, for example, an electrochemical cell, e.g., a battery, a capacitor, or a flow-through capacitor.

Abstract: A dielectric layer is formed on a surface of a porous portion formed at least on a surface of a valve metal sheet. A solid electrolyte layer is formed on the dielectric layer, and a collector layer is formed on the solid electrolyte layer. A first insulating portion is formed on an outer periphery of the dielectric layer, and a solid electrolyte layer is formed on a portion of the dielectric layer corresponding to an opening of the first insulating portion. A portion of the solid electrolyte layer is formed on the first insulating portion. A second insulating portion is formed on the first insulating portion and on the outer periphery of the solid electrolyte layer. A collector layer is formed on a surface of the solid electrolyte layer exposed through an opening of the second insulating portion, thus providing a solid electrolytic capacitor. The solid electrolytic capacitor has less current leakage and a high withstand voltage.

Abstract: A solid electrolytic capacitor having a high capacitance and excellent high frequency response including a valve metal sheet which is made porous, a dielectric layer formed on the porous portion, a solid electrolyte layer formed on the dielectric layer, a collector layer and an electrode exposure area formed on the solid electrolyte layer, and an insulating section electrically insulating the electrode exposure area from the collector layer, in which the electrode exposure area and the collector layer are formed on the same surface of the valve metal sheet.

Abstract: As a storage cell for surface mounting which reduces the mounting area, increases the reliability of soldering and realizes high-density mounting, provided is a storage cell for surface mounting having: a polar storage cell housing a component between a case and a top cover and sealed with an insulator; an anode terminal connected to an outer surface of the case; and a cathode terminal connected to an outer surface of the top cover. In this storage cell, the anode terminal is provided with an external connection connected to a printed wiring board, the cathode electrode is provided with a mounting-fixing portion connected to an external connection connected to the printed wiring board and the top cover, and a plated layer is formed on the external connections of the anode terminal and cathode terminal and on the mounting-fixing portion of the cathode terminal.

Abstract: A capacitor includes a valve metal foil including a valve metal porous body and a lead portion, a dielectric layer provided on the valve metal porous body, a solid electrolyte layer on the dielectric layer, a collector layer on the solid electrolyte layer, an anode lead connected to the lead portion, a housing for accommodating the valve metal porous body, the dielectric layer, the solid electrolyte layer, the collector layer, and the anode lead, and for having an end of the anode lead exposed from a surface of the housing, an anode external terminal provided over the housing and connected with the end of the anode lead, and a cathode external terminal provided over the housing and coupled with the collector layer. The capacitor has a large capacitance, a small ESR, and a small ESL.

Abstract: The present invention aims to address a problem of contact failure likely to occur in the joint between an internal lead and an external terminal and to provide a reliable aluminum electrolytic capacitor. To this end, an aluminum electrolytic capacitor of the present invention is structured so that a through-hole provided through an internal lead has a diameter smaller than the outer diameter of an aluminum rivet and the peripheral edge of this through-hole is drawn to provide a cylindrical portion integral with the through-hole.

Abstract: The present invention provides a secondary battery and a capacitor which may provide an excellent high rate and cycle characteristic as well as sufficient electromotive force and capacity. The secondary battery and a capacitor have an active material of an electrode comprising a trimer compound comprising three units of indole or indole derivatives in condensed ring form, wherein the second position and the third position of each unit form a six-membered ring, and a proton which can be utilized as a charge carrier of the trimer compound.

Abstract: The present invention relates to the field of solid state capacitors. The invention particularly relates to capacitors of the type in which a powder-formed valve action material, typically tantalum, forms a highly porous anode body portion of a solid state capacitor.