513results about "Capacitor electrolytes/absorbents" patented technology

A capacitor that is capable of exhibiting good electrical properties under a wide variety of different conditions is provided. The capacitor contains a capacitor element that includes a sintered porous anode body, a dielectric that overlies the anode body, and a solid electrolyte that overlies the dielectric and includes a conductive polymer. The capacitor also contains multiple exposed anode lead portions that are electrically connected to respective anode terminations and a planar cathode termination that is electrically connected to the solid electrolyte.

A solid electrolytic capacitor includes: a capacitor element including an anode part and a cathode part; a substrate that supports the capacitor element; a sealing body that seals the capacitor element; a first external electrode electrically connected to the anode part; a second external electrode electrically connected to the cathode part; and an adhesive layer disposed between the capacitor element and a first surface of the substrate. At an interface between the first surface and the adhesive layer, a maximum height Rz1 of surface roughness of the first surface is 5 μm or more, and a maximum height Rz2 of surface roughness of the adhesive layer is 3 μm or more.

The invention relates to a production process of a high-stability anhydrous aluminum electrolytic capacitor and the capacitor manufactured by the same, and the capacitor is manufactured by the following method: activating electrolytic paper: activating the surface of the electrolytic paper by adopting an activating agent containing a polyethylene glycol derivative, and removing a solvent to obtain activated electrolytic paper; the activated electrolytic paper, the anode foil, the activated electrolytic paper and the cathode foil are sequentially stacked and wound into a columnar core structure, in the process, the aluminum pad leading-out piece is riveted to the two electrode foils, and an element A is obtained; dipping: dipping the element A in the anhydrous electrolyte, so that the element A is fully dipped in the anhydrous electrolyte to obtain an element B; and assembling: assembling the element B, a shell, a sealing plug and an electronic component to obtain the anhydrous aluminum electrolytic capacitor. Through activating treatment, the adsorption efficiency of the element A on the water-free electrolyte is improved, meanwhile, the phenomenon that under the extreme condition, the capacitance is likely to be reduced can be reduced, and the durability of the element A is improved.

To provide a method for producing a conductive polymer dispersion suitable for production of a capacitor excellent in performance regarding equivalent series resistance.SOLUTION: A polymerization step of polymerizing a monomer for forming a π - conjugated conductive polymer in a reaction liquid containing a polyanion and water to form a conductive composite containing the π - conjugated conductive polymer and the polyanion, thereby obtaining a conductive polymer dispersion liquid containing the conductive composite and the water, wherein in the polymerization step, the monomer is polymerized so that a total concentration of the π - conjugated conductive polymer and the polyanion with respect to a total mass of the reaction liquid is 1.90 mass% or less.SELECTED DRAWING: None

A process for the production of a layer composition, comprising the process steps: a) provision of a substrate with a substrate surface; b) formation of a stabilized electrically conductive polymer layer on at least a pail of the substrate surface, the formation of the stabilized electrically conductive polymer layer comprising the process steps: b1) formation of an electrically conductive polymer layer comprising an electrically conductive polymer on at least a part of the substrate surface; b2) application of a liquid stabilizer phase, comprising at least one stabilizer and at least one solvent or dispersant, onto the electrically conductive polymer layer obtained in process step b1) for the formation of a stabilizer layer, wherein the at least one stabilizer is a flavonoid. The present invention also relates to a layer composition and to the use of a layer composition.

The invention belongs to the field of paper for aluminum electrolytic capacitors, and particularly relates to a high-voltage-resistance low-loss electrolytic capacitor diaphragm and a preparation method thereof. According to the diaphragm, a plant fiber single-layer paper base with the beating degree of 90-98 degrees SR is adopted, hydrophilic polymer coatings distributed in a discontinuous point shape are formed on the two surfaces of the diaphragm through gravure coating, the coating coverage rate ranges from 20% to 70%, and the total gluing amount ranges from 0.2 g / m to 6.0 g / m. According to the structure, on the premise that the thickness is not obviously increased, the smoothness of the diaphragm is obviously reduced, and the electrolyte adsorbability is enhanced, so that the ESR is reduced to 20-22 m omega, and meanwhile, it is ensured that the breakdown voltage is larger than or equal to 550 V. The aluminum electrolytic capacitor is suitable for high-performance and miniaturized aluminum electrolytic capacitors.

A capacitor element that includes: a capacitor unit including an anode plate including a core portion and a porous portion on at least one main surface of the core portion, a dielectric layer on a surface of the porous portion, and a cathode layer that includes a solid electrolyte layer on a surface of the dielectric layer, and the solid electrolyte layer contains a conductive polymer; and a sealing layer covering the capacitor unit, wherein the sealing layer contains a first insulating resin and first flattened inorganic fillers, and the first flattened inorganic fillers are oriented in a surface direction orthogonal to a thickness direction in a portion of the sealing layer that covers the capacitor unit.

This solid electrolytic capacitor element comprises: a positive electrode body; a dielectric layer formed on a surface of the positive electrode body; and a negative electrode part covering at least a portion of the dielectric layer. The negative electrode part is provided with a solid electrolyte layer covering at least a portion of the dielectric layer. The solid electrolyte layer contains a conductive polymer component containing a conjugated polymer. The solid electrolyte layer has an oxygen permeability P1, when heated at 230°C for five hours, of not more than 1.0 cm3 / m2·24h·atm. Using this solid electrolytic capacitor element, it is possible to provide a solid electrolytic capacitor element and a solid electrolytic capacitor having excellent heat resistance.

To provide an electrolytic capacitor capable of sufficiently maintaining an electrostatic capacitance and an ESR.SOLUTION: An electrolytic capacitor comprises a capacitance element, and an electrolyte liquid. The capacitance element comprises: a positive electrode body having a chemical coating; and a solid electrolyte contacted with the chemical coating. The electrolyte liquid contains a solvent, a polymer component, and a solute. The solvent contains at least one selected from the group consisting of a lactone compound, a glycol compound, and a sulfone compound. A concentration of the polymer component in the electrolyte liquid is 15 mass% or less. The solute contains at least one of benzene-dicarboxylic acid and its derivative as a first acid component, and at least one of an amin and an amidine as a basic component. The concentration of the solute in the electrolyte liquid is 15 mass% or more and 40 mass% or less. A ratio V / Vw of a formation voltage V applied to the positive electrode body for forming the chemical coating and a rating voltage Vw of the electrolytic capacitor is 1.7 or less.SELECTED DRAWING: Figure 1

A composition for an electrolytic capacitor and an electrolytic capacitor including the composition is provided. The composition includes an intrinsically conductive polymer and an electrolyte solution. The electrolyte solution includes an organic solvent, an ionic salt compound and a succinimide-based compound.

A solid electrolytic capacitor according to the present invention comprises a positive electrode body, a dielectric layer that is formed on the surface of the positive electrode body, a solid electrolyte layer that includes a conductive polymer and covers at least a portion of the dielectric layer, and a negative electrode layer that covers at least a portion of the solid electrolyte layer. A layer that includes a boro-di-organic acid compound is provided between the dielectric layer and the negative electrode layer.

An electrolytic capacitor disclosed herein includes: a stacked body of an anode foil having a dielectric layer formed on a surface thereof and a cathode foil; and a layer containing a conductive polymer and an insulating material disposed between the dielectric layer and the cathode foil. The insulating material is at least one kind of material selected from the group consisting of insulating fibers and insulating particles. No separator is disposed between the anode foil and the cathode foil.

To provide an electrolytic capacitor and a manufacturing method that can maintain low ESR while utilizing conductive polymers and flexible crystals.SOLUTION: An electrolytic capacitor comprises an electrolytic layer between a pair of electrodes. The electrolytic layer includes conductive polymers obtained by depositing a conductive polymer solution containing conductive polymers and neutralizing agents and flexible crystals, and the electrolytic layer does not contain metal ions derived from the neutralizing agents. A manufacturing method for the electrolytic capacitor has an electrolytic layer formation step of impregnating and drying the conductive polymer solution in which a conductive polymer is dispersed or dissolved between the pair of electrodes, and the conductive polymer solution does not contain metal ions.SELECTED DRAWING: Figure 1

The present disclosure provides an organic conductor having excellent moisture resistance, and an electrolytic capacitor using the same. The organic conductor contains a conjugated polymer and a dopant. The dopant contains: a disulfonaphthalic acid compound having a naphthalene ring, two sulfo groups bonded to the naphthalene ring, and two carboxy groups, or an acid anhydride group thereof, bonded to the naphthalene ring; or an acid anhydride of the disulfonaphthalic acid compound.

Provided is an improved method for preparing an electrolytic capacitor comprising:forming an anode with a dielectric on the anode;forming a conductive polymer layer on the dielectric wherein the forming of the conductive polymer layer comprises sequential applying multiple layers of a conductive polymer on the dielectric;applying a treatment to the conductive polymer layer wherein the treatment comprises applying a dopant wherein the dopant comprises:a carboxylic acid compound defined by the formula:R2—(C(O)OX3)m; anda compound selected from the group consisting of:an aromatic sulfonate compound defined by the formula:R1—(S(O)2OX1)n and a phosphorus containing compound defined by:R3—(OxP(O)(OX4)2)p wherein all groups are defined.

A method for producing an electrolytic capacitor, the electrolytic capacitor including a capacitor element including an anode body and a cathode body each having a foil shape. The anode body includes a dielectric layer on a surface of the anode body. The method includes a step of forming a capacitor element precursor by winding or stacking a separator, the anode body, and the cathode body with the separator interposed between the anode body and the cathode body, a step of impregnating the capacitor element precursor with a treatment liquid containing a polyhydric alcohol, a solvent, and a conductive polymer component, a step of impregnating the capacitor element precursor with a liquid component after the step of impregnating the capacitor element precursor with the treatment liquid, and a step of forming the capacitor element by eluting the polyhydric alcohol into the liquid component.

This solid electrolytic capacitor includes a first electrode, a dielectric layer covering at least a part of the first electrode, and a second electrode covering at least a part of the dielectric layer. The second electrode includes a solid electrolyte layer, a conductive carbon layer covering at least a part of the solid electrolyte layer, and a metal particle layer covering at least a part of the carbon layer. The solid electrolyte layer includes a pyrrole electrolytic polymerization layer, the carbon layer includes carbon particles and a binder, and the binder includes rubber particles.

A capacitor 1a includes a metallic tantalum 10, an electric conductor 20, and an oxidized tantalum film 30. The oxidized tantalum film 30 is disposed between the metallic tantalum 10 and the electric conductor 20, where the oxidized tantalum film 30 is in contact with the metallic tantalum 10. The oxidized tantalum film 30 includes a first portion 31 containing fluorine, and a second portion 32. The second portion 32 is located closer to the metallic tantalum 10 than the first portion 31 in a thickness direction of the oxidized tantalum film 30. And a fluorine concentration at the second portion 32 is lower than a fluorine concentration at the first portion 31.

The present invention relates to a polymer capacitor comprising an anode, a dielectric layer and a cathode wherein the cathode comprises a solution processed n-type conductive polymer having an electrical conductivity of at least 100 S / cm, preferably at least 500 S / cm.

This solid electrolytic capacitor (100) includes a capacitor element (170) provided with a first electrode layer (141), a dielectric layer (150), a solid electrolyte layer (163), and a second electrode layer (160) formed on the outer surface of the solid electrolyte layer (163). The solid electrolyte layer (163) is formed of a polymer film containing: a crosslinked polymer obtained through crosslinking of a polymer having a carbonyl group by means of a crosslinking agent including a dihydrazide compound; and a complex formed of polyethylene dioxythiophene and polystyrene sulfonate. The second electrode layer (160) has a conductive polymer film (165) formed in contact with the solid electrolyte layer (163). The solid electrolyte layer (163) is a precoat layer used when forming the conductive polymer film (165) through electrolytic polymerization.

To provide techniques for reducing an anomalous charge current (ACC) in an electrolytic capacitor.SOLUTION: When a conductive polymer 18 is applied to an electrolytic capacitor, processing of forming mordant layers (20, 21) of a phytic acid or the like is performed. Examples of sites where the mordant layers are formed are preferably between primary and secondary conductive polymers (18 / 22), between a dielectric 16 and the primary conductive polymer, on each layer of the primary conductive polymer, and the like.SELECTED DRAWING: Figure 1

The invention relates to the technical field of production and processing of solid-liquid hybrid capacitors, and in particular discloses a method for manufacturing a solid-liquid hybrid capacitor with quantitative electrolyte injection. The method comprises: step S1, placing an aluminum capacitor casing to be injected with an electrolyte on a lifting platform; step S2, injecting a predetermined quantity of electrolyte into an injection tube via a liquid intake tube; and step S4, driving a drive rod and a piston to move downward within the injection tube by a telescopic member, so as to inject the electrolyte in the injection tube into the aluminum capacitor casing. The telescopic member is extended to move the drive rod downward, so that the piston moves downward in the injection tube to inject the electrolyte into the aluminum capacitor casing. A shaking drive member on the drive rod comes into contact with a cover plate on a connecting member to shake the injection tube vertically, so that the electrolyte adhering to the inner wall of the injection tube is shaken off and flows into the aluminum capacitor casing, thereby enabling the predetermined quantity of electrolyte to enter the aluminum capacitor casing completely to the greatest extent, and effectively avoiding the problems of insufficient and inconsistent electrolyte volume in each injection.

This electrolytic capacitor comprises a capacitor element and a liquid component. The capacitor element comprises a positive electrode body that has a dielectric layer on a surface thereof, and a conductive polymer component that covers a part of the dielectric layer. The liquid component contains a first solvent, a base component, and an acid component. The first solvent is composed of at least one substance that is selected from the group consisting of polyols and derivatives thereof. The base component contains a first base which has an acid dissociation constant of a conjugate acid of from 5 to 10, while having no boiling point or a boiling point of 100°C or higher.

Integrated photoelectrochemical capacitor based on bismuth vanadate BiVO4 and poly(3,4-ethylenedioxythiophene) (PEDOT) is characterized in that it comprises a BiVO4 layer, preferably with a thickness ranging from 70 to 1000 nm, deposited on fluorine-doped tin oxide (FTO) conductive glass on one side, and an electrochemically deposited PEDOT layer on FTO glass on the other side, wherein both FTO glass layers are bonded together on the non-conductive side using resin, preferably epoxy, and the conductive sides are connected using tape.

A polymer electrolyte can be formed from (e.g., by polymerizing) a mixture that includes oligomer(s), additive(s), solvent(s), salt(s), and / or any suitable components. The polymer electrolyte can further or alternatively include monomer(s) (e.g., a stiffening monomer that in solution or incorporated into a cured polymer modifies a mechanical property such as flexural modulus of the battery cell; adhesion monomers such as a monomer that interacts with one or more surface within a battery to modify or improve adhesion of the electrolyte and the surface; etc.).

An electrolytic capacitor for a semiconductor device includes a conductive substrate, a dielectric layer on the conductive substrate, and a conductive polymer layer on the dielectric layer. The conductive polymer layer may include at least one additive. The at least one additive may include an anodizing agent to promote oxide growth of the dielectric layer. The at least one additive may instead or additionally include an organic solvent, an additive to promote hydration resistance of the dielectric layer, and / or an additive to increase conductivity of the conductive polymer layer.

To provide an electric or electronic device having excellent heat resistance and moisture resistance. The electric or electronic device of the present disclosure having a configuration including a first electrode layer, a conductive material layer, and a second electrode layer that are layered in this order, the conductive material layer containing a conductive material having a configuration in which a conjugated macromolecular compound is doped with an anion selected from the group consisting of a nitrogen anion, a boron anion, a phosphorus anion, and an antimony anion. The anion is preferably an anion represented by Formula (a-1) or (a-2).

A capacitor capable of exhibiting good electrical properties under a wide variety of conditions is provided. The capacitor comprises a capacitor element consisting of a sintered porous anode body, a dielectric material covering the anode body, and a solid electrolyte containing a conductive polymer, also covering the dielectric. The capacitor also includes multiple anode conduction sections extending from the ends of the capacitor element. Furthermore, the capacitor includes a housing that defines an internal cavity in which the capacitor element is arranged and hermetically sealed.