14 results about "Polymer capacitor" patented technology

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 utility model discloses a laminated electrode packaging structure of a tantalum polymer capacitor, which relates to the technical field of capacitor packaging and comprises an inner electrode, an outer electrode and an outer electrode, the end electrodes are arranged at the two ends of the inner electrode, each end electrode comprises tantalum metal layers arranged on the two sides of the inner electrode and used for improving the conductivity of the end electrode, the inner electrode comprises chips which are horizontally stacked in a staggered mode, a second ceramic dielectric layer is arranged outside each chip, and the tantalum metal layers are arranged on the tantalum metal layers. According to the utility model, the chip is arranged in the second ceramic dielectric layer in an inclined manner at 5 degrees, so that the electric field distribution is further optimized, the response capability of the capacitor to the change of the electric field is improved, the effective working length of the inner electrode is increased, the area of the inner electrode is increased in a phase-changing manner, and the capacitance is improved.

This invention describes a packaging structure for roll-type (wound-type) aluminum conductive polymer capacitor element. Two protective substrates are applied to sandwich a roll-type capacitor element in between with an insulating material surrounding the capacitor element also in between the protective substrates. The protective substrates comprise electrically separated anodic conductive pad and cathodic conductive pad on their surfaces. The capacitor element is oriented with its axis perpendicular to the two substrates. The anodic and cathodic leads of the capacitor element pass through the through holes. An anodic external terminal is plated over the anodic conductive pad and a cathodic external terminal is plated over the cathodic conductive pad so that the anodic external terminal is electrically connected to the anodic lead and the cathodic external terminal is electrically connected to the cathodic lead. In another arrangement, the anodic and cathodic leads are bent by about 90 degree so that they point to the two sides of the packaging. External terminals are placed on the two sides of the packaging on the surfaces of the insulating material. In still another arrangement, the packaging structure uses only one protective substrate.

A substrate-type multi-layer polymer capacitor (MLPC), including a casing, a core, and two electroplated terminals. The core is arranged in an inner cavity of the casing. The casing is formed by joining two first packaging plates and two second packaging plates. The two electroplated terminals are formed by electroplating. One of the two electroplated terminals is configured to cover one end of the casing to form an anode, and the other of the two electroplated terminals is configured to cover the other end of the casing to form a cathode electrically led out from the core. The first packaging plate includes a substrate, an electrode plate and two metal plates. The electroplated terminals are integrally sealed with the casing.

To provide a hybrid capacitor with improved electrical quality and reproductivity, and to provide a method of manufacturing the same.SOLUTION: A capacitor comprises a working element. The working element comprises an anode including a first dielectric body on the anode, a cathode, and a conductive separator provided between the first dielectric body and cathode. The conductive separator comprises a separator and a first conductive polymer. The first conductive polymer at least partially encapsulates the separator. A second conductive polymer at least partially encapsulates the first conductive polymer. The first conductive polymer has a higher conductivity than the second conductive polymer. An anode lead is in electrical contact with the anode, and a cathode lead is in electrical contact with the cathode.SELECTED DRAWING: Figure 1

Disclosed in the present application are a multilayer polymer capacitor based on an n-type conductive polymer, and a preparation method therefor. The preparation method comprises the following steps: acquiring a single capacitor having an oxide dielectric layer on the surface, cleaning and drying the surface of the single capacitor, impregnating same with a surface modifier solution, and then drying same, so as to obtain a surface-modified single capacitor; sequentially impregnating the surface-modified single capacitor with a polymerizable monomer solution and an oxidant solution, performing drying after each instance of impregnation, and repeating the process 6-10 times until an n-type conductive polymer film is formed; impregnating the single capacitor having the n-type conductive polymer film with an outer film layer solution, and heating and drying same to achieve the complete growth of an n-type conductive polymer on an oxide film; and impregnating same with a conductive carbon paste and a silver paste, and then laminating and extruding same, so as to obtain a multilayer polymer capacitor. While the equivalent series resistance of the multilayer polymer capacitor is reduced, the working stability of the multilayer polymer capacitor in a high-temperature and high-humidity environment is effectively improved.

The application discloses an aluminum wire type polymer capacitor, which comprises a shell and a capacitor body; the capacitor body comprises a stacked aluminum wire structure and a conductive plate, the conductive plate comprises an anode conductive plate and a cathode conductive plate, the stacked aluminum wire structure is provided with an anode area and a cathode area, the anode area of the stacked aluminum wire structure is fixedly connected with the anode conductive plate, and the cathode area of the stacked aluminum wire structure is fixedly connected with the cathode conductive plate; the stacked aluminum wire structure is composed of one or more stacked aluminum wire units; and the stacked aluminum wire unit is composed of a plurality of parallel aluminum wires. By arranging the stacked aluminum wire structure, the aluminum foil structure of a traditional laminated capacitor is replaced, the capacity and the ripple current resistance of the capacitor are greatly improved under the premise of ensuring that the capacitor has a small volume and an equivalent series resistance.

The invention provides a polymer capacitor which is a solid electrolytic capacitor, and polydopamine is arranged between a dielectric layer on a valve metal surface of the capacitor and a polymer conductive polymer layer. Polydopamine is introduced between the dielectric layer and the high-molecular conductive polymer layer, the polydopamine is formed by self-polymerization of dopamine, the surface of the polydopamine contains groups such as phenolic hydroxyl groups and amino groups, the polydopamine and-OH on the surface of the dielectric layer of the metal oxide film can form hydrogen bonds, and meanwhile, the polydopamine and a continuous conjugated pi electron system ring of conductive high-molecular can form pi-pi accumulation; therefore, the bonding capacity between the metal oxide film dielectric layer and the high-molecular conductive polymer in the high-molecular solid electrolytic capacitor is improved, and the problem that the bonding capacity between the metal oxide film dielectric layer and the high-molecular conductive polymer in the high-molecular solid electrolytic capacitor is weak is solved. The invention also provides a preparation method of the polymer capacitor.

To provide a conductive polymer dispersion having small particles and a high conductivity, and the use of the same in the preparation of polymer capacitors.SOLUTION: A polythiophene dispersion includes: (a) a polythiophene copolymer of a first monomer of Formula I and a second monomer of Formula II, where A has a C1-C5 alkylene bridge further functionalized with at least one functional group selected from among sulfonic acid, phosphonic acid, phosphate ester, sulfate ester, carboxylic acid, and salts of them, and B has a C1-C5 alkylene bridge, where a molar ratio of the first monomer to the second monomer is from 1 / 4 to 4 / 1; (b) a polymeric polyanion having specific substituents; where a molar ratio of the functional groups of the polyanion to the sum of A and B is from 1.1 to 1.75.SELECTED DRAWING: None

The application relates to a preparation method and application of a fluorene polyester-tris (2-hydroxyethyl) cyanurate composite dielectric with high breakdown strength and dielectric performance, and relates to the technical field of composite film preparation. The application aims to solve the problem that traditional composite dielectrics cannot have high dielectric constant and high breakdown strength. The fluorene polyester-tris (2-hydroxyethyl) cyanurate composite dielectric prepared by the method has excellent dielectric performance and breakdown performance. The application provides a new material selection for high-performance capacitors and aviation materials, and is widely applied to advanced fields such as electricity, electronics and new energy vehicles. Meanwhile, the preparation equipment is simple in process operation, easy to implement, low in cost, environment-friendly and pollution-free, and provides an extremely favorable way for developing advanced polymer capacitors. The application can obtain a preparation method and application of a fluorene polyester-tris (2-hydroxyethyl) cyanurate composite dielectric with high breakdown strength and dielectric performance.

An improved capacitor is provided. The capacitor includes a working element, where the working element includes an anode including a first dielectric on the anode, a cathode, and a conductive membrane between the first dielectric and the cathode. The conductive membrane includes a membrane and a first conductive polymer, wherein the first conductive polymer at least partially encapsulates the membrane. The second conductive polymer at least partially encapsulates the first conductive polymer and wherein the first conductive polymer has a higher conductivity than the second conductive polymer. The anode lead is in electrical contact with the anode, and the cathode lead is in electrical contact with the cathode.

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 conducting polymer having a conductivity of at least 100 S / cm, preferably at least 500 S / cm.

The invention discloses an ultrahigh-ductility fiber-reinforced geopolymer capacitor and a preparation method thereof, and the capacitor comprises modified geopolymer layers and three-dimensional porous carbon-metal composite material layers which are alternately arranged. The modified geopolymer layer is prepared from fine aggregate, slag, metakaolin, silica fume, an alkali activator, polyvinyl alcohol fiber and steel fiber. The preparation method comprises the following steps: uniformly mixing the slag, the metakaolin and the silica fume in a dry mixing manner, then adding the fine aggregate, and uniformly mixing in a dry mixing manner to obtain a solid mixture; adding an alkali activator into the solid mixture and stirring; adding polyvinyl alcohol fibers and steel fibers, uniformly stirring, pouring into a mold, and carrying out ultrasonic vibration to obtain homogenous and dispersed slurry; horizontally laying foamed nickel adsorbed with carbon black on the slurry; covering the foamed nickel adsorbed with the carbon black with a second layer of slurry; repeating for 2-4 times, and maintaining at constant temperature. The capacitor has the advantages of ultrahigh ductility, excellent mechanical strength and efficient energy storage performance.