124results about "Capacitor electrodes" patented technology

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.

A solid electrolytic capacitor includes a laminate in which capacitor elements each including an anode foil, and cathode foils are laminated, an exterior resin covering the laminate and having a first end face on which a part of each anode foil is exposed and a second end face on which a part of each cathode foil is exposed, an anode external electrode electrically connected to each anode foil at the first end face, and a cathode external electrode electrically connected to each cathode foil at the second end face. A first average distance from an end point on the second end face to the respective cathode foils in the lamination direction on the mounting surface side of the exterior resin is smaller than a second average distance from the end point to the respective cathode foils in a region where the capacitor elements and the cathode foils overlap.

This application relates to the field of electronic component technology, specifically to a novel rare-earth capacitor and its preparation method. The novel rare-earth capacitor provided by this application includes: an anode, a cathode, and a rare-earth electrolyte. The anode is an aluminum substrate plated with titanium. The rare-earth electrolyte includes: an organic solvent, an electrolyte salt, and rare-earth electrolyte additives. The organic solvent includes: a mixture of ethylene glycol (EG) and gluconate (GBL). The electrolyte salt includes: ammonium phthalate and imidazole salt. The cathode is titanium foil. This application can meet the stringent low-temperature environment requirements of -40℃ and possesses extremely high resistance to blast impact and vibration. Even in extreme conditions where the distance between adjacent detonators is only 0.3–0.5 meters and there is a millisecond-level delay in detonation, it can still ensure that the electronic detonator is not affected by the preceding explosion. This product can replace existing imported tantalum capacitors, achieving domestic supply chain integration and effectively reducing costs.

The application discloses a sheet type laminated solid-state aluminum electrolytic capacitor and a preparation method thereof. The capacitor comprises a core package and a resin shell. The resin shell is packaged outside the core package and forms the solid-state aluminum electrolytic capacitor. The core package comprises a core package prototype, an anode lead frame and a cathode lead frame. The core package prototype comprises arc-shaped cores and metal shafts. A conductive silver paste layer is arranged in a cathode gap between two adjacent arc-shaped cores. The fixed position of the anode part of each core is at the center of the core, which is surrounded by the annular cathode part. Each core cathode part is integrally connected through the conductive silver paste, so that the whole core package presents a disc structure. The core package with the structure is more compact and has no gap. In the packaging process, the organic resin can be prevented from being squeezed into the core layers, the core deformation damage is prevented, the leakage current and ESR increase is prevented, the capacity shortage caused by the delamination between the cores and even the capacitor failure can be further prevented. Meanwhile, the cathode part of the core has a larger area and smaller ESR.

The application belongs to the technical field of conductive connection, and discloses a tantalum capacitor electrode connection structure, which comprises a tantalum capacitor connecting seat assembly and a tantalum capacitor assembly. The inside bottom end of the tantalum capacitor connecting seat assembly is provided with a conductive transposition assembly, and the inside top end of the tantalum capacitor connecting seat assembly is provided with a first transposition driving assembly and a second transposition driving assembly. The conductive positive electrode and the conductive negative electrode are optimized and improved, and the movable conductive connection is realized. Moreover, the long and short pins of the tantalum capacitor assembly are inserted in sequence with the conductive positive electrode and the conductive negative electrode. No matter whether the long and short pins are inserted in the positive direction or the reverse direction, the structure linkage is adopted, so that the long and short pins of the tantalum capacitor assembly are always in one-to-one positive direction with the conductive positive electrode and the conductive negative electrode, that is, the error-avoiding conductive connection is realized. When the tantalum capacitor assembly is disassembled, the arc-shaped reset spring is pushed and reset, and the tantalum capacitor assembly forms the electrode power-off action of self-ejection on the tantalum capacitor connecting seat assembly.

To provide a film-like functional material for use as an electrode applied to electrical energy storage devices, and a method for producing the film-like functional material.SOLUTION: In a film-like functional material 1, a carrier medium 2 including a total carrier volume and having a cross-sectional extent 7 less than or equal to 100 μm is arranged; a strip-shaped extent is formed from linear carrier elements 3a and node-like carrier elements 3b; the linear carrier elements and node-like carrier elements form the ingredient components of the carrier medium and pass throughout the total carrier volume; and the strip-shaped extent has interconnected partial volumes 5 present therein. The carrier elements 3 are coated to be sheathed with a first functional ingredient, and the remaining volume of the total carrier volume formed by the partial volumes is filled with at least one second functional ingredient.SELECTED DRAWING: Figure 2D

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.

This disclosure proposes a method for preparing a nitride photoelectrode with photoelectrocatalytic properties, comprising etching a nitride material with an irregular surface using an alkaline solution to obtain a nitride material with an irregular surface; and depositing a co-catalyst onto the nitride material with the irregular surface to obtain a nitride photoelectrode loaded with the co-catalyst.

An electrode foil for an electrolytic capacitor comprises a substrate containing a valve-acting metal and a dissimilar metal composite layer covering the surface of the substrate. The dissimilar metal composite layer includes a mixed region containing a first metal and a second metal different from the first metal. The mixed region constitutes at least 50% of the thickness of the dissimilar metal composite layer. The mixed region is used to achieve a content of at least 1 atom% for both the first metal (M1) and the second metal (M2) relative to the total metal content.

The present invention provides a thin-film capacitor capable of arranging a pair of terminal electrodes on the same side. The thin-film capacitor (1) comprises: a metal foil (10) having a roughened upper surface (11); a dielectric film (D) covering the upper surface (11) of the metal foil (10) and having an opening that partially exposes the metal foil (10); a first electrode layer connected to the metal foil (10) via the opening; and a second electrode layer connected to the dielectric film (D) but not connected to the metal foil (10). Thus, both the first and second electrode layers can be arranged on the upper surface (11) of the metal foil (10). Moreover, since the metal foil (10) is roughened, a larger capacitance can be obtained.

Provided is a separator for a power storage device, the separator including: a substrate 10 that is a polyolefin microporous membrane containing a polyolefin as a main component; and a coating layer 20 that is arranged on at least one surface of the substrate 10. In this separator, the coating layer 20 contains an inorganic filler 1 and a thermoplastic polymer, the thermoplastic polymer contains a particulate polymer 2 protruding from the surface of an inorganic filler portion L1, and, in the surface observation of the coating layer 20, a coefficient of variation (cv) of the areas (si) of Voronoi polygons obtained by Voronoi tessellation using the protruding particulate polymer 2 as a generator is 0.10 to 0.60.

The present invention provides a thin-film capacitor with high adhesion to a circuit board. The thin-film capacitor (1) comprises: a metal foil (10) having a roughened upper surface (11); a dielectric film (D) covering the upper surface (11) of the metal foil (10) and having an opening that partially exposes the metal foil (10); a first electrode layer connected to the metal foil (10) via the opening; and a second electrode layer connected to the dielectric film (D) but not connected to the metal foil (10). The angle θa formed by another main surface (12) and the side surface (13) of the metal foil (10) is greater than 20° and less than 80°. Thus, the angle of the side surface (13) is a conical shape greater than 20° and less than 80°, thereby suppressing warping and improving adhesion to the multilayer substrate when embedded in the multilayer substrate.

A Ti-Zr alloy in powder form is described. Sintered pellets and capacitor anodes containing the Ti-Zr alloy powder of the present invention are further described.

Various embodiments of an electrical component and a method of forming such component are disclosed. The electrical component includes a substrate having a first major surface, a second major surface, and a cavity disposed in the substrate. The cavity extends between the first major surface and the second major surface. The electrical component also includes an anode electrode that includes a conductive foil layer disposed on the second major surface of the substrate and over the cavity. Tantalum material is disposed within the cavity and includes tantalum particles. A dielectric layer is disposed on the tantalum particles, and an electrolyte cathode layer is disposed on the dielectric layer. The electrical component also includes a cathode electrode disposed over the cavity.

This capacitor 1a comprises a metal tantalum 10, a conductor 20, and a tantalum oxide film 30. The tantalum oxide film 30 is disposed in contact with the metal tantalum 10, and is disposed between the metal tantalum 10 and the conductor 20. The tantalum oxide film 30 includes a first part 31 and a second part 32 containing fluorine. The second part 32 exists at a position closer to the metal tantalum 10 than the first part 31 in the thickness direction of the tantalum oxide film 30. Additionally, the concentration of fluorine in the second part 32 is lower than the concentration of fluorine in the first part 31.

To provide an electrolytic capacitor with a reduced equivalent series resistance (ESR), and a method for manufacturing the electrolytic capacitor.SOLUTION: A method for manufacturing an electrolytic capacitor includes the steps of: preparing a positive electrode foil 11, a negative electrode foil 12, and a first conductive polymer diffusion liquid including a first conductive polymer component and a first dispersant; a step of applying the first conductive polymer diffusion liquid on a surface of the electrode foils by a coating technique, removing at least a part of the first dispersant, and forming a first conductive polymer layer including the first conductive polymer compound; and a step of manufacturing a capacitor element by using the electrode foils with the first conductive polymer layer formed.SELECTED DRAWING: Figure 3

A solid electrolytic capacitor having a thickness of about 1,000 µm or less is provided. The capacitor comprises a capacitor element comprising an anode component comprising a porous anode body disposed on a surface of an anode substrate. The anode substrate is formed from a valve metal composition and the porous anode body is formed from a sintered powder containing a valve metal composition and having a thickness of about 650 µm or less. The capacitor element further comprises a cathode coating disposed over a dielectric and the porous anode body. The cathode coating comprises a solid electrolyte containing conductive polymer particles, wherein at least a region of the anode substrate is free of the cathode coating. An anode termination is electrically connected to the region of the anode substrate that is free of the cathode coating, and a cathode termination is electrically connected to the cathode coating.

A dielectric 10 includes a complex oxide. The complex oxide is amorphous and has a composition represented by CexAl1–xOk. In said composition represented by CexAl1–xOk, the condition 0.400≤x<0.90 is satisfied, and k is a value that preserves the electroneutrality of the complex oxide.

To provide an electrolytic capacitor in which a decrease in capacitance over time is suppressed, a cathode body included in the electrolytic capacitor, and a manufacturing method for the electrolytic capacitor.SOLUTION: The electrolytic capacitor includes an anode foil, a cathode body, and an electrolytic solution. The anode foil includes a valve metal and has a dielectric oxide film formed on a foil surface. The cathode body has the anode foil of the valve metal and a carbon layer laminated on the cathode foil. The interface resistance between the cathode foil and the carbon layer is 1.8 mΩ cm2 or less.SELECTED DRAWING: Figure 1

The invention relates to a mounting structure (3) for a capacitor (4). A first pair (11) and a second pair (12) of holding elements (13) are integral parts of the mounting structure (3) and are elastically biased. A locking element (30) spans and connects at least the second pair (12) of holding elements (13) and is in a form and force fitting contact with at least the second pair (12) of holding elements (13)

The invention relates to the technical field of electrochemical energy storage, and discloses a preparation method of a bismuth carbon nanowire-based planar electrochemical filter capacitor, which comprises the following steps of: (1) adding 2g of polyacrylonitrile and 1g of bismuth nitrate pentahydrate into 20mL of dimethylformamide, and stirring for 12 hours at room temperature in an argon atmosphere to obtain a white transparent viscous spinning precursor solution; (2) filling the spinning precursor solution into an injector with a 20G needle, and taking a roller wrapped by aluminum foil as a receiving device; according to the bismuth carbon nanowire-based planar electrochemical filter capacitor and the preparation method thereof, bismuth nitrate pentahydrate and polyacrylonitrile are co-dissolved in a spinning precursor solution, and after electrostatic spinning and gradient heat treatment, in-situ generation and uniform embedding of bismuth or oxide nanoparticles thereof in a carbon nanofiber matrix are realized; the problems of particle aggregation and weak interface bonding caused by a traditional post-loading method are effectively avoided, and the integrity and cycling stability of the electrode structure are improved.

Provided is an improved method for forming a solid electrolytic capacitor. The method includes forming a first dielectric oxide on a tantalum anode by applying a first formation electrolyte on the anode;forming a second dielectric oxide on the first dielectric oxide by applying a second formation electrolyte on the anode;wherein at least one of the first formation electrolyte or the second formation electrolyte comprises a derivative of inositol as defined by Formula 1:Wherein each of R1-R6 is defined.

A capacitor includes metallic tantalum, a solid electrolyte, and a tantalum oxide film. The tantalum oxide film is disposed between the metallic tantalum and the solid electrolyte. A first portion includes fluorine. A second portion is in contact with the first portion, the second portion being closer to the solid electrolyte than the first portion in a thickness direction of the tantalum oxide film. A fluorine concentration in the second portion is lower than a fluorine concentration in the first portion.

The utility model discloses a foil surface acid liquor cleaning device in electrode foil production, and relates to the technical field of electrode foil production, the foil surface acid liquor cleaning device comprises two acid scraping rollers, the two acid scraping rollers are staggered in the vertical direction, a material passing gap is arranged between the roller surfaces of the two acid scraping rollers, and tension adjusting components are arranged at the two ends of one acid scraping roller; the tension adjusting assembly comprises a sliding seat, the acid scraping roller is rotationally connected with the sliding seat, the sliding seat is slidably connected with the support in the vertical direction, and a lead screw used for driving the sliding seat to slide is arranged on the support. According to the foil surface acid liquor cleaning device in electrode foil production, the amount of acid liquor brought out by the electrode foil can be reduced, and the discharge amount of waste acid is reduced, so that the wastewater treatment cost is reduced.

A tantalum capacitor according to an embodiment of the present disclosure includes: a tantalum body; a tantalum wire connected to the tantalum body; a conductive polymer layer disposed on the tantalum body; and a first reinforcement layer disposed on the conductive polymer layer and including iron (Fe) doped carbon nanotubes.

A capacitor (1a) is provided with a tantalum metal (10), a solid electrolyte (20), and a tantalum oxide film (30). The tantalum oxide film (30) is disposed between the metal tantalum (10) and the solid electrolyte (20). The first site 31 contains fluorine. The second portion 32 is in contact with the first portion 31 at a position closer to the solid electrolyte 20 than the first portion 31 in the thickness direction of the tantalum oxide film 30. The concentration of fluorine in the second site 32 is lower than the concentration of fluorine in the first site 31.

This capacitor assemply comprises a capacitor element, a first external packaging case, and a second external packaging case. One of the first external packaging case and the second external packaging case is an anode external packaging case that is provided with an anode terminal for electrically connecting with an anode section of the capacitor element, and is a bottomed tube shape in which one end section is open, and the other is a cathode external packaging case that is provided with a cathode terminal for electrically connecting with a cathode section of the capacitor element, and is a bottomed tube shape in which one end section is open. The open end section of the first external packaging case and the open end section of the second external packaging case are joined, unifying the anode external packaging case and the cathode external packaging case and storing the capacitor element.

The present invention provides a thin-film capacitor with high adhesion to a circuit board. The thin-film capacitor (1) comprises: a metal foil (10) having a roughened upper surface (11); a dielectric film (D) covering the upper surface (11) of the metal foil (10) and having an opening that partially exposes the metal foil (10); a first electrode layer connected to the metal foil (10) via the opening; and a second electrode layer connected to the dielectric film (D) but not connected to the metal foil (10). The first and second electrode layers do not cover the outer peripheral region (15) of the upper surface (11) of the metal foil (10), but are formed in the region surrounded by the outer peripheral region (15). In this way, the outer peripheral region (15) of the roughened upper surface (11) of the metal foil (10) is exposed, thereby increasing the adhesion to the circuit board.