242results about "Capacitor electrodes" 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.

The invention discloses an aluminum electrolytic capacitor special for an electric tool and a preparation method of the aluminum electrolytic capacitor. The method comprises the following steps that a positive electrode guide pin and a negative electrode guide pin are riveted to an anode foil and a cathode foil respectively; placing electrolytic paper between the anode foil and the cathode foil, and winding to form a core package; carrying out baking drying and electrolyte impregnation treatment on the wound core package, and then carrying out packaging and aging; the electrolyte consists of the following components in percentage by mass: 45-60% of a solvent, 25-40% of a solute, 5-15% of an additive and 5-10% of a stabilizer, the solute contains 2-butyl suberic acid; the stabilizer contains alkyl phosphate. According to the preparation method of the aluminum electrolytic capacitor special for the electric tool, the electrolyte formula is optimized, oxidation hydrolysis of the electrode foil and the oxidation film is effectively inhibited, the ion migration resistance is reduced, the polarization phenomenon is reduced, the loss value and the equivalent series resistance (ESR) of the obtained capacitor are remarkably reduced, the ripple resistance is improved, and the aluminum electrolytic capacitor is suitable for the electric tool.

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 provides a lightweight flexible composite micro-energy storage module, which comprises a flexible substrate, a composite electrode layer, a solid electrolyte layer and a packaging layer, and is characterized in that the flexible substrate is made of a polyurethane-graphene composite material, the thickness of the flexible substrate is 50-200 [mu] m, and the surface of the flexible substrate is provided with a micro-crack structure; the composite electrode layer is formed by alternately stacking MXene / silicon carbon composite nanosheets and polypyrrole conductive polymers, wherein the mass ratio of MXene to silicon carbon is 3: 1 to 5: 1. According to the invention, through the mechanical interlocking design of the microcrack structure of the flexible substrate and the composite electrode layer, the interlayer binding force is significantly enhanced, and the structural integrity under dynamic bending is improved; the root-shaped ion transmission channel of the solid electrolyte layer and the vertical orientation transition layer realize electron-ion dual-channel cooperative transmission and reduce the interface impedance; the gradient hydrophobic structure of the packaging layer is matched with mechanics through chemical bonding, the sealing performance, the flexibility and the environmental tolerance are balanced, and the service life of the module is prolonged.

This invention discloses a surface-mount solid aluminum electrolytic capacitor and its manufacturing method, comprising a capacitor core package, which includes N capacitor cores, N+1 conductive metal meshes, a substrate, anode leads, cathode leads, and a silver paste covering tape. The capacitor core package is encapsulated and electroplated to form a solid aluminum electrolytic capacitor. The capacitor core includes an anode portion, a cathode portion, and an insulating barrier tape. In this invention, the conductive metal mesh sandwiched between the metal pads in the anode portion of the capacitor core and the cathode portion of the capacitor core can achieve the flatness of the core package. The silver paste covering tape located on the side of the cathode portion of the core package is embedded in the gap formed between two adjacent capacitor cores due to the conductive metal mesh sandwiched, forming an integrated connection. This prevents the resin encapsulant from being squeezed into the core layers during encapsulation, preventing core deformation damage that could lead to increased leakage current and increased ESR. Furthermore, it can prevent insufficient capacitance or even capacitor failure caused by delamination between cores.

The invention relates to the technical field of preparation of tantalum capacitor cathode plates, in particular to a preparation device and method of a high-performance tantalum electrolytic capacitor cathode plate, and mainly comprises a support, impregnation spin-drying rollers are symmetrically arranged on the support, and a first conveying belt and a second conveying belt are respectively arranged between the impregnation spin-drying rollers. Tantalum capacitor workpieces are placed on the first conveying belt and the second conveying belt, synchronous rods in the separation mechanism are distributed in a high-low staggered mode, the synchronous rods on the two sides of the tantalum capacitor workpieces ascend and descend in a staggered mode, and the tantalum capacitor workpieces are effectively separated in a reciprocating mode. And the position of the moving block is adjusted through a bidirectional lead screw in the adjusting mechanism, so that cylindrical tantalum capacitor workpieces of different models are adapted.

The invention discloses a device and a method for preparing tantalum powder by reducing gaseous magnesium, and solves the problems of high oxygen content, poor particle uniformity, incomplete reaction and the like in the prior art. The device adopts a vertical multi-layer reaction furnace structure, and realizes efficient reduction of tantalum oxide through heating of a resistance wire and reaction with gaseous magnesium. The method comprises gaseous magnesium reduction and product post-treatment. The oxygen content of the tantalum powder prepared through the method is controlled to be 3000-6000 ppm, the specific volume reaches 80000-100000 mu F.V / g, the apparent density ranges from 1.5 g / cm < 3 > to 1.8 g / cm < 3 >, particle size distribution is uniform, and the method is suitable for large-scale production of electronic-grade tantalum powder.

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.

The invention belongs to the technical field of capacitor electrode foil manufacturing, and discloses a capacitor formed foil multi-stage oxidation treatment device and a capacitor formed foil multi-stage oxidation treatment process, the device comprises multi-stage formation tanks which are arranged in sequence, cleaning mechanisms are arranged among the multi-stage formation tanks, the device further comprises a transmission mechanism used for transmitting formed foil, and the transmission mechanism comprises transmission rollers. The transmission rollers are arranged in an up-and-down staggered mode, and the formed foil sequentially penetrates through the transmission rollers; the head end of the formed foil is wound around the driving roller, and the driving roller is used for winding and tightening the formed foil; the inclining assembly is used for inclining the transmission roller and the driving roller; according to the scheme, the transmission roller and the driving roller drive formed foil to incline through the inclination assembly, so that water and formed liquid flow from high to low and are prevented from being accumulated on the two sides of the transmission roller; the problem that water accumulates on the two sides of a transmission roller in an existing formed foil cleaning device is solved.

The invention belongs to the technical field of electronic materials, and particularly relates to a high-performance sintered foil matched with multi-particle-size aluminum powder for industrial production and a preparation method of the high-performance sintered foil. In order to solve the problem that an existing sintered foil cannot obtain high bending performance and high specific capacitance performance at the same time, a multi-particle-size aluminum powder gradient matching strategy is adopted, the aluminum foil is prepared through slurry preparation, slurry stirring, double-face coating and drying integrated operation, sintering and formation treatment, the specific capacitance of the sintered foil after standardization is 0.8-1.2 mu F / cm, and the specific capacitance of the aluminum foil is 0.8-1.2 mu F / cm. The specific capacitance fluctuation range is smaller than or equal to 8%, the bending frequency is 40-100 times after a 90-degree bending test, the bent film layer is free of cracking and falling off, the leakage current is smaller than or equal to 3 [mu] A / cm < 2 > under the 25 DEG C and rated voltage test, and the film can be directly used for industrial production.

This capacitor is provided with: a porous body that comprises a plurality of pores; and a conductor. The porous body comprises: a conductive base material; a first dielectric layer that is disposed on the base material; and a second dielectric layer that is disposed on the base material. The conductor is disposed on the first dielectric layer and the second dielectric layer. The first dielectric layer is disposed, in the porous body, in a first region that includes a boundary between the porous body and the outside of the porous body. The second dielectric layer is disposed in a second region that is located more inward of the porous body than the first region in the porous body.

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.

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.

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 method for fixing a film to a capacitor element and an electrolytic capacitor in which stability of an operation is improved.SOLUTION: A method for fixing a film 12 to a capacitor element 3 includes the steps of: providing an electrolytic capacitor 1 including a case 2 which has a bottom surface 5 and a side surface 6 and has a recess 14 for the film 12 provided on the bottom surface 5, and a capacitor element 3 which is attached to the case 2; embedding the film 12 into the recess 14; embedding an attachment ring 13 made of metal onto the film 12; bringing the film 12 into contact with the attachment ring 13 to deform and fasten them; and fixing the attachment ring 13 with laser welding or riveting. Since riveting can be completed in the whole of the attachment ring 13 or in a part in the attachment ring 13, the film 12 can be fixed by fixing the attachment ring 13.SELECTED DRAWING: Figure 1

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.

The present disclosure provides a core package, an aluminum electrolytic capacitor, and a method for sealing the same. The core package includes a plurality of first electrode foils and a plurality of second electrode foils arranged in a stacked manner. The first electrode foil is either an anode foil or a cathode foil, and the second electrode foil is the other of the anode foil and the cathode foil. Among the plurality of first electrode foils, one first conductive foil piece is provided at the edge of each first electrode foil. A first portion of the first conductive foil piece is electrically connected to the corresponding first electrode foil, and a second portion of the first conductive foil piece extends and protrudes with respect to the first electrode foil. The plurality of first conductive foil pieces are all connected to one first conductive foil strip via the second portions. Here, an oxide film is formed on the surface of the first conductive foil piece.

A capacitor may include a stack assembly that may include a plurality of anode plate members, each having an embedded wire. The anode plate members may be separated by at least one cathode foil sandwiched between separator sheets. A conducting member may electrically connect the embedded wires and may have an externally accessible end portion that is hermetically sealed from the interior of the capacitor. A case covers the stack assembly and may be attached to a cover. The case and cover may enclose the stack assembly within an interior area of the capacitor. The at least one cathode foil may be connected to the case. An electrolyte fluid may be disposed within the interior area. A passage may be provided through a central portion of the stack assembly. A tube, surrounded by insulation, may pass through the passage and may be connected to the cover and the case.

A solid electrolytic capacitor comprising a capacitor element, anode lead extending from a surface of the capacitor element, an anode termination that is in electrical connection with the anode lead, a cathode termination that is in electrical connection with the solid electrolyte, and a casing material that encapsulates the capacitor element and anode lead is provided. An interfacial coating is disposed on at least a portion of the anode termination and / or cathode termination and is in contact with the casing material. The coating contains a hydrophobic resinous material and the adhesion strength of the casing material is about 5 newtons per square millimeter or more as determined at a temperature of about 23° C. and relative humidity of about 30%.