Abstract: There is provided a solid electrolytic capacitor, including: a condenser element including a positive electrode wire inserted and mounted to be biased from a center of a chip body; a positive electrode terminal including a pattern layer extendedly formed to the positive electrode wire to be bonded to the positive electrode wire; and a negative electrode terminal electrically connected to the condenser element.

Abstract: There is provided a solid electrolytic capacitor, including: a condenser element including a chip body molded by sintering, a positive electrode terminal contact layer formed on one area of the chip body to be exposed to the outside, an insulating layer formed in the entire area or some area other than one area in which the positive electrode terminal contact layer is formed, and a negative electrode layer stacked on the insulating layer; a negative electrode extracting layer stacked to be electrically connected with the negative electrode layer; a negative electrode terminal stacked on the negative electrode extracting layer; a positive electrode terminal stacked on the positive electrode terminal contact layer.

Abstract: A multilayer electrolytic capacitor has a laminated body in which anode foils and cathode foils are alternately laminated with separators in between, and a lead member connected to corresponding electrode foils among the anode foils and cathode foils. Each of the anode foils and each of the cathode foils have their respective main electrode portions opposed to each other through the separator and their respective lead portions led from the associated main electrode portions. Each lead portion includes an end face intersecting with a direction in which the lead portions are led, and a side face intersecting with the end face and extending in a lamination direction in the laminated body. The lead member has a first portion extending in the direction in which the lead portions are led, and a second portion intersecting with the first portion and extending in the lamination direction. The second portion of the lead member is connected to the side faces of the lead portions.

Abstract: A solid electrolytic capacitor comprises an insulating substrate in which an anode terminal and a cathode terminal are formed. A first anode section and a first cathode section are formed on a first surface of the insulating substrate, so as to be spaced from each other in a first predetermined direction. A second anode section and a second cathode section are formed on a second surface of the insulating substrate, so as to be spaced from each other in a second direction generally perpendicular to the first direction. The anode terminal comprises the first and second anode sections, which are electrically connected to each other. The cathode terminal comprises the first and second cathode sections, which are electrically connected to each other. A capacitor element is arranged on the first surface of the insulating substrate with an anode section thereof being oriented in the first direction.

Abstract: Provided are a three-dimensional net-like aluminum porous body in which the diameter of cells in the porous body is uneven in the thickness direction of the porous body; a current collector and an electrode each using the aluminum porous body; and methods for producing these members. The porous body is a three-dimensional net-like aluminum porous body in a sheet form, for a current collector, in which the diameter of cells in the porous body is uneven in the thickness direction of the porous body. When a cross section in the thickness direction of the three-dimensional net-like aluminum porous body is divided into three regions of a region 1, a region 2 and a region 3 in this order, the average cell diameter of the regions 1 and 3 is preferably different from the cell diameter of the region 2.

Abstract: A solid electrolytic capacitor comprises an insulating substrate in which an anode terminal and a cathode terminal are formed. The anode terminal comprises a first anode section formed on a first surface of the insulating substrate, and a second anode section formed on a second surface of the insulating substrate, which are electrically connected to each other. A connection part is formed integrally with the first anode section. The cathode terminal comprises a first cathode section formed on the first surface and a second cathode section formed on the second surface, which are electrically connected to each other. A distance between the first anode section and the first cathode section is smaller than a distance between the second anode section and the second cathode section. And an anode section and a cathode section of a capacitor element are electrically connected to the connection part and the first cathode section respectively.

Abstract: At least one wound film/foil or metalized film capacitor is sealed between its electrodes to form a sealed enclosed annular region between the interior of the enclosure, the electrodes and the exterior of the wound capacitor to form a sealed capacitor assembly. A fluid dielectric can be introduced into the sealed enclosed annular region under a vacuum to form a sealed and impregnated wound capacitor assembly.

Abstract: A process for forming a laminate with capacitance and the laminate formed thereby. The process includes the steps of providing a substrate and laminating a conductive foil on the substrate wherein the foil has a dielectric. A conductive layer is formed on the dielectric. The conductive foil is treated to electrically isolate a region of conductive foil containing the conductive layer from additional conductive foil. A cathodic conductive couple is made between the conductive layer and a cathode trace and an anodic conductive couple is made between the conductive foil and an anode trace.

Abstract: A stacked solid electrolytic capacitor and a method for manufacturing the same are disclosed. The stacked solid electrolytic capacitor includes two capacitor sets, a positive electrode conducting device, a negative electrode conducting device, and a package unit. Each capacitor set includes at least one capacitor unit. The front side of the positive electrode portion of the capacitor set extends to form a positive electrode pin. The positive electrode conducting device has at least one first positive electrode conducting lead frame and at least one second positive electrode conducting lead frame. The first positive electrode conducting lead frame is electrically connected with the second positive electrode conducting lead frame. The negative electrode conducting device has at least one negative electrode conducting lead frame, and is electrically connected with the negative electrode of the two capacitor sets by using metal conductive material.

Abstract: A pressure regulating valve is provided on a terminal plate of a capacitor. This pressure regulating valve includes a gas permeable sheet, a valve body made of silicone rubber, a packing, and a cap. The gas permeable sheet that prevents permeation of electrolyte is provided so as to close a hole created in the terminal plate. The packing is interposed between the valve body and the gas permeable sheet, and is made of an elastic material with moisture permeation resistance higher than that of silicone rubber. The cap is fixed onto the terminal plate and covers the valve body and the packing such that the valve body and the packing are retained in a compressed state with respect to the terminal plate. The valve body and the packing are provided away from the gas permeable sheet.

Abstract: A surface mount electronic component includes an element, an anode terminal, a cathode terminal, and an outer package body. The element has a configuration including an anode, and a cathode formed on a part of the surface of the anode via a dielectric substance. An anode terminal is electrically connected to the anode, and a cathode terminal is electrically connected to the cathode. The outer package body covers an element laminated body such that a part of the anode terminal and a part of the cathode terminal are exposed. The outer package body is made of a norbornene resin. Thus, an electronic component having high reliability can be achieved.

Abstract: The invention relates to a process for the production of electrolyte capacitors having a low equivalent series resistance and low residual current, electrolyte capacitors produced by this process and the use of such electrolyte capacitors.

Abstract: A capacitor containing a solid electrolytic capacitor element that includes an anode, dielectric, and solid electrolyte is provided. An anode lead extends from the anode and is electrically connected to an anode termination. The anode termination contains an upstanding portion that is bent or folded about an axis so that it possesses two or more sections. A slot (e.g., U-shaped) extends through the sections of the upstanding portion for receiving an anode lead. The resulting “folded” configuration of the anode termination increases the total thickness of the upstanding portion and its associated slot, which thereby enhances the degree of mechanical support and stability that the termination provides to the anode lead. This is particularly beneficial for thicker anode leads, such as those having a height and/or width of about 100 micrometers or more, in some embodiments about 200 micrometers or more, and in some embodiments, from about 250 to about 1000 micrometers.

Abstract: Capacitive devices are described having electrical interconnects of electrodes which possess efficient electrical contact between current collectors, electrical isolation of electrodes, and/or electrochemical stability, while minimizing the mechanical stress and strain applied to the electrodes. The capacitive devices are adaptable to a wide range of electrode dimensions and electrode stack heights.

Abstract: Provided is a method for forming a capacitor. The method includes: providing an anode with a dielectric thereon and a conductive node in electrical contact with the anode; applying a conductive seed layer on the dielectric; forming a conductive bridge between the conductive seed layer and the conductive node; applying voltage to the anode; electrochemically polymerizing a monomer thereby forming an electrically conducting polymer of monomer on the conductive seed layer; and disrupting the conductive bridge between the conductive seed layer and the conductive node.

Abstract: A solid electrolytic capacitor has a capacitor body formed from a pressed anode, a dielectric layer and a solid electrolyte layer. An anode lead extends from anode pellet and is electrically connected to an anode termination. The outer surface of the capacitor body forms a cathode that is electrically connected to a cathode termination. Base anode and cathode termination portions are coplanar and connected with a recessed leadframe channel. A capacitor element is attached to the anode and cathode termination portions and encapsulated. The recessed leadframe channel is removed to isolate the anode and cathode terminations on a single mounting surface, leaving a surface groove formed between the anode and cathode terminations.

Abstract: An electrical energy storage device includes a first electrode; a second electrode; a separator; and an electrolyte; where the separator is an electronic insulator; the separator is positioned between the first and second electrodes; the separator includes a first surface proximal to the first electrode and a second surface proximal to the second electrode; the separator is configured to support an electric double layer at the first surface, the second surface, or at both the first surface and the second surface; and the device is an electrical energy storage device.

Abstract: An aspect of the present invention provides a solid electrolytic capacitor that comprises: an anode mainly formed of a valve metal or an alloy thereof; an anode lead terminal a part of which is buried in a side surface of the anode; a dielectric layer formed on surfaces of the anode and mainly formed of an oxide; a conducting polymer layer formed on the dielectric layer; a cathode layer formed on the conducting polymer layer on an outer circumferential surface of the anode, the cathode layer comprising: a carbon layer; and a silver paste layer formed on the carbon layer; a thermal expansion layer provided on the side surface of the anode and on a part of the outer circumferential surface continuing from the side surface; and a rein outer package provided to cover the anode, dielectric layer, cathode layer, and thermal expansion layer, wherein a thermal expansion coefficient in a temperature range lower than a glass transition temperature of the thermal expansion layer is larger than that of each of the silver

Abstract: The invention relates to a process for producing electrolytic capacitors with low equivalent series resistance, low residual current and high thermal stability, which consist of a solid electrolyte and an outer layer comprising conjugated polymers, to electrolytic capacitors produced by this process and to the use of such electrolytic capacitors.

Abstract: A capacitor includes a capacitor element including first and second electrodes, an electrolyte solution, first and second collector plates made of metal and joined to the first and second electrodes of the capacitor element, respectively, a case accommodating the capacitor element, the electrolyte solution, the first and second collector plates, a terminal plate placed at an opening of the case and joined to the second collector plate, and a sealing rubber sealing the terminal plate and the opening of the case. The case has a tubular portion and a bottom plate closing the tubular portion. An inner surface of the bottom plate of the case has a contacting portion contacting the first collector plate and a junction portion facing the first collector plate.

Abstract: A component built-in wiring board is provided. The component built-in wiring board 10 includes a core substrate 11, a first component 61, a first built-up layer 31 and a capacitor 101. The core substrate 11 has a housing hole 90 and the first component 61 is housed in the housing hole 90. A component mounting region 20 capable of mounting a second component 21 is provided in a surface 39 of the first built-up layer 31. The capacitor 101 has electrode layers 102 and 103 and a dielectric layer 104. The capacitor 101 is embedded in the first built-up layer 31 such that a first front surface 105 and a second front surface 106 in the electrode layer 102 and a first front surface 107 and a second front surface 108 in the electrode layer 103 are disposed in parallel with the surface 39 of the first built-up layer 31.

Abstract: Disclosed herein is an energy storage apparatus. The energy storage apparatus according to an exemplary embodiment of the present invention includes: a first electrode structure; a second electrode structure opposite to the first electrode structure; and an electrolyte positioned between the first electrode structure and the second electrode structure, wherein the first electrode structure includes: a first current collector having a rugged structure; and a first active material layer conformally covering the rugged structure.

Abstract: A compound having the formula below. X is hydroxyl, a sulfonic ester or salt thereof, a phosphonate or salt thereof, a carboxylate or salt thereof, or a boronic ester or salt thereof. The value n is an integer greater than or equal to 2. A polymer made by polymerizing the compound. A method of: reacting NH2—(CH2—CH2—O)n—CH2—CH2—OH with thiophene acid chloride to form a (SC4H3)—CO—NH—(CH2—CH2—O)n—CH2—CH2—OH amide; reacting the amide with a vinyl sulfonic ester, a vinyl phosphonate, a vinyl carboxylate, or a vinyl boronic ester to form an intermediate; and converting the intermediate to a salt form.

Abstract: Provide an electrochemical device offering a large capacity per current collector and a low internal resistance, which is also easy to assemble. Provided is a laminated sheet body 16S by inserting a negative-electrode continuous body 11BW between an adjacent pair of first current collectors 12a, 12a with their first current collector main units 12a1 connected together, and also between an adjacent pair of first current collectors 12a, 12a with their first tabs 12a2 connected together, with respect to a plurality of positive electrodes 11A arranged in the width direction apart from each other, after which the negative-electrode continuous body of the laminated sheet body is cut to the unit width dimension of an element to obtain a plurality of laminated bodies 16.

Abstract: A nanoporous insulating oxide composite electrode and ultracapacitor device, method of manufacture and method of use thereof. The composite electrode being constructed from a conductive backing electrode and an composite layer. Preferably, the ultracapacitor device is configured in a stacked, coiled or button cell configurations and includes composite electrodes. The composite layer being substantially free of mixed oxidation states and nanoporous and having a median pore diameter of 0.5-500 nanometers and average surface area of 300-600 m2/g. The composite layer made from a stable sol-gel suspension containing particles of the insulating oxide, the median primary particle diameter being 1-50 nanometers. Preferably, the insulating oxide is Al2O3, MgAl2O4, SiO2 or TiO2. Preferably, the backing electrode is carbon paper sputter-coated with a film of Au.

Abstract: A metal capacitor in which an electric conductivity is significantly improved by applying a metal material for an electrolyte and a manufacturing method thereof is provided. The metal capacitor includes a terminal increase-type metal member; a metal oxide layer being formed on the terminal increase-type metal member; an insulating layer being formed on the main electrode layers and the terminal increase-type metal member to externally expose the first and the second electrode withdrawing portions of the terminal increase-type metal member; a main electrode layer being formed at the through-hole forming portion to fill in the plurality of through-holes formed on the through-hole forming portion of the terminal increase-type metal member; a first and a second lead terminals; and a sealing member sealing the terminal increase-type metal member connected to the first and the second lead terminals to externally expose the first and the second lead terminals.

Abstract: Provide is an aluminum electrolytic capacitor exhibiting low specific resistance and low impedance property and realizing high reliability. An electrolytic capacitor has a structure in which: a capacitor element which is formed by rolling an anode foil and a cathode foil each connected with an electrode extraction lead through a separator and which is impregnated with a drive electrolytic solution is included in a cylindrical outer case having a closed-end; and an open end of the outer case is sealed with an elastic sealing body, in which: the drive electrolytic solution contains a tricyanomethide salt represented by the below-indicated chemical formula (1); and the drive electrolytic solution has a water content of 3.0 wt % or less: where, R represents a cation pairing with a tricyanomethide ion in formation of a tricyanomethide salt.

Abstract: A solid electrolytic capacitor includes an anode 2 made of a valve metal or an alloy thereof, a dielectric layer 3 provided on the surface of the anode 2, a conductive polymer layer 5 provided on the dielectric layer 3, and a cathode layer 6 provided on the conductive polymer layer 5. A fullerene layer 4 made of an insulating fullerene is provided between the dielectric layer 3 and the conductive polymer layer 5.

Abstract: A process for producing a solid electrolyte capacitor with an anode comprising a sintered fine NbOx powder, where 0.5<x<1.7, includes providing a green anode body. The green anode body is sintered so as to provide a sintered anode body. The sintered anode body is formed so as to provide a formed anode body, wherein the forming is essentially performed without applying a pressure. The formed anode body is provided with a cathode so as to provide the solid electrolyte capacitor.

Abstract: A capacitor assembly containing a solid electrolytic capacitor element and an anode lead extending in a direction therefrom, first and second cathode terminations, and an anode termination is provided. The first cathode termination contains a first portion that is substantially parallel to a lower surface of the capacitor element and in electrical contact therewith, and the second cathode termination contains a second portion that is substantially parallel to an upper surface of the capacitor element and in electrical contact therewith. Through such a “sandwich” configuration, the degree of surface contact between the cathode terminations and capacitor element is increased, which can help dissipate heat and allow it to handle higher currents that would normally cause overheating. The terminations may also provide increased mechanical support.

Abstract: A double layer capacitor (DLC) containing at least one double layer capacitor cell is provided. Each double layer capacitor cell contains two current collectors, each containing a metallized carrier film with upper and lower planar surfaces, two thin electrode layers in direct contact with the lower and upper planar surfaces of the metallized carrier films of the first and second current collectors, and a polymer electrolyte layer in direct contact with the first and the second thin electrode layers. The polymer electrolyte is applied as a liquid which impregnates and encases the electrode layers and then solidified to form the electrolyte layer. The resulting DLC is preferably no thicker than about 20 microns, and may be as thin as 5 microns. Methods of producing a DLC and for forming a cross-linked electrolyte are also provided.

Abstract: Solid electrolytic capacitors are provided with decreased equivalent series resistance (ESR). The solid electrolytic capacitors include: an anode containing a valve metal or an alloy that is mainly made of a valve metal; a dielectric layer formed on a surface of the anode; an electrolyte layer formed on the dielectric layer; a carbon layer formed on the electrolyte layer; and a silver paste layer formed on the carbon layer, wherein the silver paste layer contains a nonionic surfactant.

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: A solution or dispersion of an ion-permeable compound, a carbon fine particle a, and a solvent is coated on a conductive sheet such as an aluminum foil, the coat is dried to form a film a, which allows to obtain a collector for an electric double layer capacitor. A solution or dispersion of a binder, a carbon fine particle b, an activated carbon b, and a solvent is coated on the film a, the coat is dried to form a film b, which results in obtaining an electrode for an electric double layer capacitor. The electrode is piled on a separator, and immersed in an electrolytic solution to obtain an electric double layer capacitor.

Abstract: An electrical storage device includes high surface area fibers (e.g., shaped fibers and/or microfibers) coated with carbon (graphite, expanded graphite, activated carbon, carbon black, carbon nanofibers, CNT, or graphite coated CNT), electrolyte, and/or electrode active material (e.g., lead oxide) in electrodes. The electrodes are used to form electrical storage devices such as electrochemical batteries, electrochemical double layer capacitors, and asymmetrical capacitors.

Abstract: Double-layer capacitors capable of operating at extremely low temperatures (e.g., as low as ?75° C.) are disclosed. Electrolyte solutions combining a base solvent (e.g., acetonitrile) and a cosolvent are employed to lower the melting point of the base electrolyte. Example cosolvents include methyl formate, ethyl acetate, methyl acetate, propionitrile, butyronitrile, and 1,3-dioxolane. An optimized concentration (e.g., 0.10 M to 0.75 M) of salt, such as tetraethylammonium tetrafluoroborate, is dissolved into the electrolyte solution. In some cases (e.g., 1,3-dioxolane cosolvent) additives, such as 2% by volume triethylamine, may be included in the solvent mixture to prevent polymerization of the solution. Conventional device form factors and structural elements (e.g., porous carbon electrodes and a polyethylene separator) may be employed.

Abstract: An electrolytic capacitor is provided having an airtight casing, electrodes immersed in an electrolytic solution, electrical contacts connected to the electrodes, and a means (10, 43) for sorption of harmful substances. The means for sorption of harmful substances includes a polymeric housing (11, 12) permeable to the harmful substances but impermeable to the electrolytic solution and contain one or more getter materials (14, 45) for sorption of the harmful substances.

Abstract: On a surface of an anode member 12 having a valve action, a cathode layer 14 is formed, and at a terminal lead-out face 12a at one end of the anode member 12, an anode wire 16 is led out of it; thus a capacitor element 10 is formed. An anode terminal 4 is joined to the anode wire 16. A cathode terminal 5 is joined to the cathode layer 14. A protective layer 2 of resin covers part or all of the capacitor element 10. A packaging member 3 of resin harder than the protective layer 2 covers around the capacitor element 10 including the protective layer 2 and the anode wire 16 to form a package. The protective layer 2 has a larger linear expansion coefficient than the packaging member 3. The mass ratio of the packaging member 3 to the total mass of the packaging member 3 and the protective layer 2 between the terminal lead-out face 12a and the exterior face of the packaging member 3 opposite the terminal lead-out face 12a is 50% or more.

Abstract: A solid electrolytic capacitor includes a capacitor element having two opposite cathode surfaces, a cathode terminal metal plate having a first cathode connecting portion electrically connected to one of the two opposite cathode surfaces, and an auxiliary cathode metal plate having a second cathode connecting portion electrically connected to the other one of the two opposite cathode surfaces of the capacitor element. The cathode terminal metal plate includes a groove electrically connected to the first cathode connecting portion. The auxiliary cathode metal plate includes an end portion that is electrically connected to the second cathode connecting portion and engages with the groove. The cathode terminal metal plate further includes an outer terminal portion.

Abstract: An electrochemical capacitor includes a first electrode including a first flexible substrate, a second electrode including a second flexible substrate, and an electrolyte. The first electrode includes a first layer of single-walled carbon nanotubes inkjetted on the first flexible substrate and a layer of first nanowires disposed on the first layer of single-walled carbon nanotubes. The second electrode includes a second layer of single-walled carbon nanotubes inkjetted on the second flexible substrate and a layer of second nanowires disposed on the second layer of single-walled carbon nanotubes. The electrolyte is sandwiched between the layer of first nanowires and the layer of second nanowires to form the electrochemical capacitor. A flexible energy storage device includes a first flexible substrate, a second flexible substrate, and one or more electrochemical capacitors formed between the first flexible substrate and the second flexible substrate. The flexible energy storage device can be wearable.

Abstract: An object is to provide a power storage device with improved cycle characteristics and a method of manufacturing the power storage device. Another object is to provide an application mode of the power storage device for which the above power storage device is used. In the method of manufacturing the power storage device, an active material layer is formed over a current collector, a solid electrolyte layer is formed over the active material layer after a natural oxide film over the active material layer is removed, and a liquid electrolyte is provided so as to be in contact with the solid electrolyte layer. Accordingly, decomposition and deterioration of the electrolyte solution which are caused by the contact between the active material layer and the electrolyte solution can be prevented, and cycle characteristics of the power storage device can be improved.

Abstract: It is an object to perform insertion and extraction of lithium ions effectively at a positive electrode of a power storage device so as to increase the reaction speed. Further, it is an object to increase the capacitance per unit volume of an active material of a positive electrode. A layer containing carbon and an active material layer are stacked at a positive electrode, whereby insertion and extraction of lithium ions are effectively performed at the positive electrode and reaction speed can be increased, even when the thickness of the positive electrode is increased. The active material layer interposed between the layers each containing carbon includes particulate crystals and therefore has high density, so that the active material can have large capacitance per unit volume.

Abstract: In a lower-face electrode type solid electrolytic multilayer capacitor and a mounting member having the same according to the present invention, fillet forming portions are formed by forming an electrode substrate cutting portion at a predetermined portion of an edge face in longer direction or in shorter direction of an electrode substrate, and a covering resin cutting portion on an edge face of a covering resin in a staircase pattern so that the electrode substrate cutting portion is surrounded by the covering resin cutting portion. According to the present invention, it is possible to provide the lower-face electrode type solid electrolytic multilayer capacitor and the mounting member having the same, in which the productivity is excellent, the volume efficiency can be improved to achieve the high capacitance, and the stable fillet can be formed on mounting.

Abstract: A solid electrolytic capacitor of the present invention includes an anode element made of a sintered body of a valve-action metal; a dielectric coating, a solid electrolyte layer, and a cathode lead layer, sequentially formed on a surface of the anode element; and an anode lead member made of a conductive metal projecting from the anode element, the anode lead member having a base end thereof embedded in the anode element, the base end being formed such that a cross section thereof perpendicular to a direction extending inwardly of the anode element has a contour with four rounded rectangular corners.

Abstract: There is provided an electrochemical device and a method for manufacturing the same. The electrochemical device includes: a collector that includes first and second electrodes disposed opposite to each other and an ion transmittable separator disposed therebetween; and a fixing member that surrounds the external surface of the collector and fixes the collector by bending parts formed at both ends. The electrochemical device can minimize the movement of the collector and maximize the overlapping portion between the first and second electrodes, thereby having excellent capacity.

Abstract: A silicon oxide material is obtained by cooling and precipitating a gaseous mixture of SiO gas and silicon-containing gas and has an oxygen content of 20-35 wt %. Using the silicon oxide material as a negative electrode active material, a nonaqueous electrolyte secondary battery is constructed that exhibits a high 1st cycle charge/discharge efficiency and improved cycle performance while maintaining the high battery capacity and low volume expansion of silicon oxide.

Abstract: A capacitor element includes a positive electrode body made of valve metal, a dielectric oxide layer on the positive electrode body, a solid electrolytic layer made of conductive polymer on the dielectric oxide layer, and a negative electrode layer on the solid electrolytic layer. A solid electrolytic capacitor includes the capacitor element, a package made of insulating resin covering the capacitor element, a base electrode provided at an edge surface of the package and made of non-valve metal coupled with the positive electrode body, a diffusion layer for connecting the positive electrode body to the base electrode, an external electrode on the base electrode, and an external electrode connected to the negative electrode layer. The solid electrolytic capacitor reduces the number of components and processes to reduce its cost and to have a small size, and has a small equivalent series resistance and a small equivalent series inductance.

Abstract: The invention relates to a process for the production of electrolyte capacitors having a low equivalent series resistance and low residual current, electrolyte capacitors produced by this process and the use of such electrolyte capacitors.

Abstract: A composite suitable as a charge-storing material for electrochemical capacitors contains carbon nanotubes and a carbonaceous materiel. The carbonaceous material is the carbonization residue of a biopolymer or seaweed rich in heteroatoms. Wherein the carbonization residue of the biopolymer or seaweed is electrically conductive and has a heteroatom content as detected by XPS of at least 6%.

Abstract: To provide an electrolytic capacitor having lead wires excellent in weldability with a boss member made of aluminum, excellent in solder wettability, and less whisker. The lead wires have a nickel plating layer in a thickness of 0.3 to 5.0 ?m, a palladium plating layer in a thickness of 0.01 to 0.10 ?m, and a gold plating layer in a thickness of 0.002 to 0.030 ?m.