612results about "Electrolytic capacitors" patented technology

The invention discloses a preparation method and application of three-dimensional intercalation multidirectional conductive MXene-based aerogel, and relates to the technical field of advanced electrochemical energy storage materials and devices. According to the MXene / conductive polymer and nanofiber composite aerogel developed by the invention, the two-dimensional conductive material, the pseudocapacitance polymer and the high-performance nanofiber are integrated in a three-in-one manner, so that collaborative optimization of conductivity, the number of active sites and structural stability is realized, and inherent defects of a single-component material are fundamentally avoided; and a universal solution is provided for solving the industrial problem of unbalanced performance of the electrode material.

A method for producing a conductive polymer dispersion, the method comprising a step for adding an electric conductivity improving agent to a dispersion that contains a conjugated conductive polymer and a polyanion and dispersing the same, wherein the step is performed at a liquid temperature of 30°C or higher.

The invention belongs to the technical field of electrode foil formation treatment, and particularly relates to an electrode foil and a preparation method thereof and an aluminum electrolytic capacitor, the preparation method of the electrode foil comprises the steps of performing multi-stage formation treatment on a corrosion foil, the number of stages of the formation treatment is at least two, and the formation treatment at least comprises first-stage formation and second-stage formation, first heat treatment is carried out after the second-stage formation; a formation liquid used in the second-stage formation is a mixed solution containing adipate and monopotassium phosphate. According to the preparation method provided by the invention, the formation liquid used in secondary formation is the mixed solution containing adipate and monopotassium phosphate, the limitation of traditional single formation liquid is broken through, and synchronous optimization of the structure, hydration resistance and electrochemical performance of the aluminum oxide film is realized through multi-stage formation, mixed solution synergy and the synergistic effect of formation and heat treatment; meanwhile, production cost is reduced, and environmental load is relieved.

A wiring module is directed to a wiring module configured to be attached to a plurality of power storage elements having electrode terminals. The wiring module includes: a plurality of busbar units: and wires connected to the busbar units. Each of the busbar units includes: a busbar connected to the electrode terminals; a circuit board; and a fixing means configured to fix the circuit board to the busbar. A conductive path is routed on the circuit board, and the conductive path includes: a connection land electrically connected to the busbar; and a wire land soldered to the corresponding wire. The busbar includes a crimping part that fixes the wire, and the wire is interposed between the crimping part and the circuit board.

The electrochemical device includes: a case including a recessed container having a bottom and a side wall, and a cap covering the opening of the recessed container; a power generation element including a laminate having an electrode layer, an electrode layer and a solid electrolyte layer laminated together and contained in the interior space of the case such that the bottom and electrode layer face each other; and a conductive plate located adjacent to the opening of the recessed container and positioned between the electrode layer and cap. The recessed container includes insertion holes with openings in the upper end surface of the side wall. The conductive plate includes elastic locking portions located on edges thereof and corresponding in position to the insertion holes. With each elastic locking portion inserted in an insertion hole, the tip portion of the elastic locking portion presses a side surface of the insertion hole.

The invention discloses a method for preparing mesoporous Bi2O3 through block polymer micelle induced self-assembly and application, and relates to the field of supercapacitor electrode materials. The method comprises the following steps: dissolving P123 in a solvent, adding an acidic reagent, then adding Bi (NO3) 3.5 H2O or BiCl3, and uniformly stirring to form a mixed solution; preparing KOH into a KOH solution, adding the KOH solution into the mixed solution, stirring, and standing to obtain the mesoporous Bi2O3. Mesoporous Bi2O3 is synthesized by adopting a micelle-induced self-assembly method, the microtopography and particle size of the mesoporous Bi2O3 can be regulated and controlled, the mesoporous structure enables the Bi2O3 material to have higher specific surface area and porosity, more active sites are exposed, the stability and electrochemical performance of the Bi2O3 electrode material are improved, and the preparation method is suitable for industrial production. The problems of poor conductivity and poor cycling stability are solved.

The invention provides an aluminum foil and a preparation method thereof, the preparation method comprises the following steps: the aluminum foil is subjected to electrochemical corrosion in a mixed acid solution, the half cycle of alternating current adopted by the electrochemical corrosion comprises a plurality of wave crests, and the mixed acid solution comprises at least one of nitric acid and phosphoric acid; passivating the aluminum foil; washing the aluminum foil with water; and the steps of electrochemical corrosion, passivation treatment and water washing are repeated until the aluminum foil reaches the preset corrosion amount. The nitric acid can improve the overall corrosion amount, reduce the surface corrosion of the aluminum foil and promote the longitudinal development of corrosion. Phosphate radicals and aluminum ions can form a complex, so that the concentration of free Al < 3 + > in a hole etching area is reduced, corrosion reaction balance is pushed to move rightwards, and further corrosion is promoted.

The invention relates to the technical field of aluminum electrolytic capacitors, in particular to an anode foil production device and method for an aluminum electrolytic capacitor. Comprising a foundation assembly, the foundation assembly comprises a base, a portal frame is installed on the top of the base, and a hollow conveying belt is installed in the base; a drying assembly is installed in the portal frame and comprises an upper drying bin fixedly connected into the portal frame, and an upper drying rod is arranged at the bottom of the upper drying bin. A lower drying bin is fixedly connected into the base and located in the middle of the hollowed-out conveying belt, and a lower drying opening is formed in the upper portion of the lower drying bin. Aiming at the defects in the prior art, the invention provides the anode foil production device and method for the aluminum electrolytic capacitor, which can effectively solve the problems of anode foil deformation and surface damage caused by overlarge airflow impact during drying and material performance change caused by local high temperature in the prior art.

The invention discloses a supercapacitor with a honeycomb structure and a preparation method thereof, the supercapacitor comprises a positive current collector, a negative current collector and a honeycomb energy storage layer, and the positive current collector and the negative current collector respectively cover two opposite surfaces of the honeycomb energy storage layer; the honeycomb energy storage layer is formed by folding, stacking and fixing a plurality of composite films, each composite film comprises a first electrode layer, an electrolyte layer and a second electrode layer, and the first electrode layer, the electrolyte layer and the second electrode layer are sequentially stacked and are respectively compounded and fixed through a bonding layer. The preparation method comprises the following steps: firstly, sequentially compounding and fixing the first electrode layer, the electrolyte layer and the second electrode layer to form a composite membrane with a sandwich structure, coating an adhesive on the single side surface of each composite membrane at intervals, and then stacking and stretching a plurality of composite membranes to form a honeycomb core structure; after folding, a positive current collector and a negative current collector are compounded on the two sides of the honeycomb core structure. An energy storage structure and a force bearing structure are organically combined, and the energy storage performance and the mechanical performance are synergistically improved.

The invention discloses a post-treatment liquid and application thereof in an anode foil formation post-treatment process, and the post-treatment liquid comprises the following components in percentage by mass: 0.1-5% of a main film-forming agent, 0.05-3% of a synergistic stabilizer and the balance of a solvent, the main film-forming agent is selected from at least one of a waterborne polyurethane emulsion and a silane coupling agent; the synergistic stabilizer is selected from at least one of organophosphate, molybdate and tungstate. The main film-forming agent and the synergistic stabilizer are compounded to obtain the post-treatment liquid, on one hand, the synergistic stabilizer is firmly combined with an aluminum oxide substrate to carry out deep passivation treatment on an oxidation film on the surface of the anode foil, and on the other hand, the synergistic stabilizer is subjected to network crosslinking with a hydrophobic protection layer formed by the main film-forming agent; the three-dimensional composite protective film can effectively isolate water molecules, repair microdefects on the surface of an oxidation film, prevent the phenomena of specific volume attenuation, leakage current increase and the like of the anode foil, and improve the long-term working reliability of the capacitor.

Disclosed are novel electrolytes, and techniques for making and devices using such electrolytes, which are based on compressed gas solvents. Unlike conventional electrolytes, disclosed electrolytes are based on “compressed gas solvents” mixed with various salts, referred to as “compressed gas electrolytes.” Various embodiments of a compressed gas solvent include a material that is in a gas phase and has a vapor pressure above an atmospheric pressure at room temperature. The disclosed compressed gas electrolytes can have wide electrochemical potential windows, high conductivity, low temperature capability and / or high pressure solvent properties. Examples of a class of compressed gases that can be used as solvent for electrolytes include hydrofluorocarbons, in particular fluoromethane, difluoromethane, tetrafluoroethane, and pentafluoroethane. Also disclosed are battery and supercapacitor structures that use compressed gas solvent-based electrolytes and techniques for constructing such energy storage devices. Techniques for electroplating difficult-to-deposit materials using compressed gas electrolytes as an electroplating bath are also disclosed.

To provide a chip-type electrolytic capacitor that is less prone to misjudgment during visual inspection of the quality of soldering when mounted on a circuit board. [Solution] The chip-type electrolytic capacitor 1 comprises a capacitor body 2 having lead terminals 23 and a base plate 3 that holds the capacitor body 2. The base plate 3 has a base plate body 31 and a plurality of auxiliary terminals 40 embedded in the bottom 32 of the base plate body 31. The auxiliary terminals 40 have a main body portion 41 positioned to the side of the lead terminal storage groove 34 and a projection portion 42 that extends from the main body portion 41 toward the side surface 35(36) of the base plate body 31, with its tip protruding from the side surface 35(36). In a plan view from the bottom 32 side of the base plate body 31, when the width direction is defined as the direction perpendicular to the direction in which the lead terminal storage groove 34 extends, the widthwise center position C of the tip of the projection portion 42 on the side surface 35(36) of the base plate body 31 is further away from the widthwise center line CL1 of the lead terminal storage groove 34 than from the widthwise center line CL2 of the main body portion 41.

According to the preparation method of the solid tantalum capacitor, the solid tantalum capacitor is composed of a tantalum block, a medium oxide layer with gradient thickness, a cathode layer, a transition layer, a silver layer and a plastic packaging layer, and the thickness of the medium oxide layer is in gradient nonlinear decrease from the outer surface of the tantalum block to the body center of the tantalum block; the preparation method of the solid tantalum capacitor comprises the following steps of pressing and sintering, energizing, heat treatment, complementary forming, coating, graphite silver paste, plastic packaging and multiple times of aging. The environment of the aging process is as follows: the relative humidity is 60-90%, the aging temperature is 60-125 DEG C, and the aging voltage is 0.6-1.5 times of rated voltage; according to the method, secondary energizing and multiple humidifying and aging processes are matched, so that the thickness of the dielectric oxide layer of the solid tantalum capacitor has the structural characteristic of gradually reducing from outside to inside, the capacity contribution degree has the trend of gradually increasing from outside to inside, the short-plate effect of the external dielectric oxide layer is supplemented, and the performance of the solid tantalum capacitor is improved. Therefore, the overall voltage endurance capability of the tantalum capacitor is improved, and the capacity of the tantalum capacitor is not sacrificed.

Provided are: at least one cylindrical power storage device (20); and an upper holder (30) that holds an upper end side of the power storage device, a positive electrode terminal (26) and a negative electrode terminal (25C) being disposed at an upper end portion of the power storage device, the negative electrode terminal being disposed at a position that is more outward in a radial direction of the power storage device than the positive electrode terminal, and a negative electrode lead (50) that is connected to the negative electrode terminal from an outer side in the radial direction, the upper holder having a restriction portion (34) that is located at a position that is more inward in the radial direction than at least a portion of the negative electrode lead.

The invention belongs to the technical field of electrode foil formation treatment, and particularly relates to a preparation method of an electrode foil, the electrode foil and an aluminum electrolytic capacitor. The preparation method comprises the following steps: carrying out first-stage formation, second-stage formation, repair treatment and third-stage formation on an aluminum foil; the first-stage formation and the third-stage formation are independently carried out in a treatment solution containing a boron element; the secondary formation is carried out in a treatment solution containing a phosphorus element; the repairing treatment is carried out in treating fluid containing rare earth ions. According to the preparation method of the electrode foil, the phosphorus-containing active substances and the rare earth ions are introduced into the formation process, the effects of reducing energy consumption and improving the specific volume and the CV product of the electrode foil are achieved, and meanwhile the leakage current of the electrode foil is reduced.

A power storage device 10 comprises a case 20, a power storage element 30, a belt-like lead 41, and an opening-sealing member 50. The opening-sealing member 50 is provided with: an insulating gasket 51 having a base part 53; and an electroconductive opening-sealing plate 56. The opening-sealing plate 56 has a displacement part 57. The displacement part 57 of the opening-sealing plate 56 and the lead 41 are electrically connected to each other. By displacement of the displacement part 57 in a direction separating away from the lead 41 in response to a rise in internal pressure inside the case 20, the displacement part 57 and the lead 41 are electrically disconnected from each other. The storage device 10 further comprises a displacement suppression means 43 that is disposed in the case 20 and that suppresses displacement of the lead 47 when the displacement part 57 is displaced in the direction separating away from the lead 41. Accordingly, the operation reliability in an electric current cutoff mechanism is enhanced.

It could be helpful to provide a laminate for an electrochemical device that can advantageously be used as a device member having excellent blocking resistance and low-temperature adhesiveness. The laminate includes a substrate and a functional layer. The functional layer contains heat-resistant fine particles; adhesive particles containing an adhesive polymer; and a binder. The adhesive polymer contains a polyester polymer having a glass-transition temperature in a range of not lower than 10°C and not higher than 95°C. In plan view of the laminate from a side corresponding to the functional layer, the functional layer includes an adhesion region formed of the adhesive particles and a heat-resistant region formed of the heat-resistant fine particle and the binder. In the laminate, the volume-average particle diameter of the adhesive particles is larger than the average stacking direction height of the heat-resistant region.

An electronic component that includes: a base body; and an external electrode that covers a part of an outer surface of the base body, the external electrode including: an underlying electrode containing copper and silicon; and a metal layer that covers an outer surface of the underlying electrode, wherein at least some of the copper has copper particles with a flattening ratio of 0.5 or less, and when the underlying electrode is viewed in section, the silicon is distributed so as to fill gaps between the copper particles.

An energy storage device includes: an electrode assembly formed by stacking a plurality of plates and elongated in a predetermined direction intersecting with a stacking direction; a container that accommodates the electrode assembly and is elongated in the predetermined direction; and a positive electrode terminal and a negative electrode terminal that are electrically connected to the electrode assembly. The electrode assembly includes: an electrode assembly body; and a pair of connecting portions that protrudes from one end portion of the electrode assembly body in the predetermined direction, and is electrically connected to the positive electrode terminal and the negative electrode terminal. A protruding portion on which the pair of connecting portions is disposed is formed at one end portion of the container in the predetermined direction.

The invention relates to an electrochemical cell for a battery of an electric or hybrid motor vehicle, said negative electrode comprising a negative current collector comprising at least one negative foil, said positive electrode comprising a positive current collector comprising at least one positive foil, said electrochemical cell comprising at least one separator, the separator being positioned between the negative foil and the positive foil, said electrochemical cell comprising a plurality of layers of active material soaked in electrolyte, characterized in that said electrochemical cell comprises a first subassembly (100) in which the negative foil and the positive foil each comprise one of the electrolyte layers, the electrolyte layer being in contact with said separator,said electrochemical cell comprising a second sub-assembly (200) in which the negative and positive foils are in contact with the separators, said second sub-assembly (200) forming a capacitor. Figure 1,

The invention relates to the technical field of aluminum electrolytic capacitors, and particularly discloses an aluminum powder sintering type electrolytic capacitor anode foil and a preparation method thereof.The magnesium element is introduced into spherical aluminum powder, a uniform fine grain structure is obtained during sintering, the porosity of the anode foil is improved, and the dielectric property of the anode foil is enhanced; the preparation method comprises the following steps: preparing spherical aluminum powder, then coating and modifying by using a silicon dioxide-titanium dioxide shell layer, keeping the sintering activity of aluminum, mixing the modified spherical aluminum powder with an additive to prepare modified aluminum powder slurry, coating the modified aluminum powder slurry on a high-purity aluminum foil, and sintering and forming to obtain the aluminum powder sintering type electrolytic capacitor anode foil with good dielectric property.

To provide a photoelectric conversion element excellent in photoelectric conversion efficiency.SOLUTION: A photoelectric conversion element has a first electrode 3, a second electrode 7, a photoelectric conversion layer 5 arranged between the first electrode 3 and the second electrode 7, and a reflection layer 6 arranged between one of the first electrode 3 and second electrode 7 and the photoelectric conversion layer 5. A wavelength at which the reflectance in a visible light region of the reflection layer 6 becomes maximum is within the range of a wavelength at which the optical absorption coefficient of the photoelectric conversion layer 5 is one-fifth or more of the maximum value in the visible light region.SELECTED DRAWING: Figure 1

The invention discloses a preparation method of a phosphorus-doped nickel-manganese bimetallic sulfide composite material and application of the phosphorus-doped nickel-manganese bimetallic sulfide composite material in a supercapacitor. According to the method, used raw materials are easy to obtain, the price is relatively low, and the cost is low; and the preparation process is simple, short in period and suitable for batch production and commercial application. The specific capacity and the energy density efficiency of the supercapacitor prepared by taking the prepared phosphorus-doped nickel-manganese bimetallic sulfide composite material as a positive electrode material of the supercapacitor and conductive carbon black as a negative electrode can be greatly improved; the requirement of a battery market on a high-specific-capacity battery is met; the method has high practical application value.

This capacitor (10) comprises: a first electrode (111); a dielectric layer (112) formed on the surface of the first electrode (111); an inorganic conductive layer (120) disposed on the dielectric layer (112); and a second electrode (131) disposed on the inorganic conductive layer (120). The main component of the inorganic conductive layer (120) is a fluorine-containing inorganic oxide.

Method for creating an electrode on a substrate (10) using a laser assisted deposition process. A metal paste (14) is printed and dried (15) on the substrate to form a conductive layer (16), and by 2D or 3D inspection, the dimensions of the conductive layer are measured. The substrate is subject to a pretreatment process (12) so as to increase adhesion and / or conduction of the conductive layer to the substrate. An electrode that is produced according to the present method may be used in flexible devices.

To provide transparent photovoltaic cells.SOLUTION: A transparent photovoltaic cell includes a first visibly transparent electrode, a visibly transparent active layer including a light absorbing material that has a bandgap greater than or equal to about 2.75 eV, and a second visibly transparent electrode. The active layer is disposed between the first transparent electrode and the second transparent electrode. The transparent photovoltaic cell is visibly transparent.SELECTED DRAWING: Figure 1

An adhesive film for a metal terminal being interposed between a metal terminal electrically connected to an electrode of a power storage device element, and a power storage device external member that seals the power storage device element. The adhesive film is configured from a laminate provided with: a first polyolefin layer disposed on the metal terminal side; a base material; and a second polyolefin layer disposed on the power storage device external member side. Under the following measurement conditions, the restoration rate measured when an indenter is pressed in a vertical direction with respect to a cross section in a thickness direction of the first polyolefin layer is 46.0% or greater. Restoration rate measurement conditions are a load of 10 mN, a load application speed of 1 mN / 10 seconds, retention time of 10 seconds, a load releasing speed of 1 mN / 10 seconds, and measurement temperature of 25° C.

The present invention provides a method for producing a conductive polymer dispersion suitable for the manufacture of capacitors, and a method for producing capacitors. [Solution] A method for producing a conductive polymer dispersion, comprising adding a surfactant to a conductive complex containing a conductive complex containing a π-conjugated conductive polymer and a polyanion, and water to obtain a mixed solution, and then performing a purification treatment to remove the surfactant from the mixed solution to obtain a conductive polymer dispersion from which the surfactant has been removed. Examples of the surfactant include one or more selected from the group consisting of dodecylbenzenesulfonic acid or its salt, polyoxyethylene alkyl ether-sulfate ester or its salt, alkylnaphthalenesulfonic acid or its salt, polyoxyalkylene alkenyl ether, and benzenedodecyldimethylammonium or its salt.

The application discloses a high-heat-conducting electrolytic capacitor paper, which is prepared from the following components in parts by weight: paper base fiber: 40-100 parts; modified ceramic filler powder: 5-25 parts; adhesive: 1-10 parts; and auxiliary agent: 2-15 parts. The application also provides a preparation method of the high-heat-conducting electrolytic capacitor paper. The high-heat-conducting electrolytic capacitor paper has good adsorption and good insulation, and still has very low ESR in the high-frequency working process. The ceramic filler powder and the adhesive are added into the paper base fiber matrix, the ceramic filler powder greatly enhances the heat-conducting performance of the capacitor paper, and the adhesive can effectively improve the strength of the paper, so that the strength requirement of the electrolytic capacitor paper in various processing can be met. Overall, the high-heat-conducting electrolytic capacitor paper has high heat conductivity and high paper strength, and has all the excellent performances of the paper base capacitor paper.