49results about "Hybrid capacitors" patented technology

A nanocomposite electrode including a substrate, a binding compound, a conductive additive, and NiO / Fe2VO4 nanoparticles. The NiO / Fe2VO4 nanoparticles have a substantially spherical shape. A mixture of the binding compound, the conductive additive and the NiO / Fe2VO4 nanoparticles, is at least partially coated on a first surface of the substrate. A method of making the NiO / Fe2VO4 nanoparticles is described.

A multilayer structure is provided, comprising a metal substrate and an electrode above the metal substrate. An adhesion layer is positioned between a main surface of the metal substrate and the electrode.

The invention discloses a cathode steel bar current on-line detection system and method based on thermoelectric self-power supply, and relates to the technical field of aluminum electrolysis smelting, the system comprises: a current acquisition unit arranged at two detection points on the surface of a cathode steel bar and used for acquiring a voltage drop between the two detection points to generate a voltage drop signal; the hot end of the thermoelectric power generation unit is attached to the surface of the cathode steel bar, the cold end is connected with the heat dissipation structure, and the temperature difference between the hot end and the cold end drives carriers to move directionally to generate initial electric energy; the energy management unit is used for storing the initial electric energy and boosting and converting to generate stable power supply voltage; and the signal processing and wireless transmission unit is driven by the stable power supply voltage, performs division operation on the voltage drop signal and the resistance value after temperature compensation to generate a current value, modulates the current value into a wireless signal and sends the wireless signal to a far-end receiving terminal. The waste heat of the electrolytic cell is utilized to generate power, energy self-sufficiency is achieved, data are transmitted in a wireless mode, and the problems of power supply and signal transmission in cathode steel bar current detection are fundamentally solved.

The invention relates to the technical field of energy storage equipment, in particular to an energy storage unit, an energy storage device and an energy supply and storage system.The energy storage unit comprises a conductive structure, the conductive structure comprises a conductive layer and an insulating layer, and the insulating layer divides the conductive layer into two conductive parts; each conductive part comprises a conductive body and a GFRP (Glass Fiber Reinforced Plastic) rib material, and the GFRP rib material is configured in the conductive body; the conductive body is prepared by filling a biochar-ECC composite material with a conductive solution. The piezoelectric film is applied to the expansion joint connecting structure of the bridge floor or the road surface for energy generation, can be used for power generation and can also be used for improving the anti-seepage performance of the expansion joint connecting structure. And by combining the energy storage device, the durability and stability of the energy storage system are remarkably improved, the energy storage cost is greatly reduced, and the problems of high cost, low energy storage density and the like in the existing energy storage technology are solved.

The invention belongs to the technical field of fluid control, and discloses a high-speed electric control valve and a control method thereof, and the valve comprises a tubular valve body, an internal diaphragm, a metal explosion wire adhered to the diaphragm, a connecting electrode and a control circuit. The energy storage circuit module is composed of a high-voltage capacitor and a fast thyristor, when a trigger signal is received, the thyristor is conducted to enable the capacitor to instantly discharge to the explosion wire, the metal wire is gasified to generate shock waves to break down the diaphragm, and microsecond-level high-speed conduction is achieved. The diaphragm is preferably a polyimide film with the thickness of 10-100 microns, the explosion wire is a copper / tungsten wire with the diameter of 0.05-0.5 mm, and the explosion wire is matched with a capacitor with the charging voltage of 200-1000 V and the capacitance value of 10-1000 [mu] F. The control method comprises the steps of diaphragm installation, capacitor charging, triggering signal sending, high-voltage discharging and diaphragm breaking conduction, and reliable operation is ensured by dynamically adjusting charging voltage and adopting an optical fiber / wireless triggering mode. The invention has the characteristics of fast response and strong interference resistance, and is suitable for high pressure difference occasions needing to accurately control the on-off of gas.

A physical secondary battery (100) comprises: a first electrode (10); a second electrode (20); a p-type semiconductor layer (30) provided between the first electrode (10) and the second electrode (20); an n-type semiconductor layer (80) that is provided between the p-type semiconductor layer (30) and the second electrode (20) and that has a thinner film thickness than that of the p-type semiconductor layer (30); and a dielectric layer (90) provided between the p-type semiconductor layer (30) and the n-type semiconductor layer (80), the p-type semiconductor layer (30) having a film thickness of 100 nm or less.

An aerosol delivery device includes a substrate (610) configured to carry an aerosol precursor composition, and a resonant transformer (1202) including a transmitter coupling device (302) and a resonant receiver coupling device (602) proximate the substrate. The aerosol delivery device also includes a pulse width modulation (PWM) inverter (1204) configured to drive the resonant transformer. The PWM inverter includes a bridge circuit (1206) coupled to the transmitter coupling device, and a PWM controller (1208) embodied as an integrated circuit and configured to output a PWM signal to the bridge circuit configured to drive the transmitter coupling device to generate an oscillating magnetic field and induce an alternating voltage when the resonant receiver coupling device is exposed to the oscillating magnetic field. The alternating voltage induces the resonant receiver coupling device to generate heat and thereby vaporize components of the aerosol precursor composition.

The invention relates to the technical field of energy storage materials, in particular to a carbon-cement-based super energy storage material and a preparation method and application thereof. The preparation method comprises the following steps: S1, mixing cement and nano carbon black powder to obtain a solid nano composite material a; s2, adding a water reducing agent and the cured capsule composite material into deionized water, and stirring until the materials are dissolved to obtain a solution b; s3, mixing the solid nano composite material a, the solution b and deionized water to obtain mixed slurry c; s4, the mixed slurry c is subjected to pouring, curing and demolding, and a carbon-cement-based composite material d is obtained; and S5, cutting into slices, polishing, and completely soaking in an electrolyte solution to obtain the carbon-cement-based super energy storage material. The carbon-cement-based super energy storage material prepared by the invention has excellent conductivity and energy storage characteristics such as high specific surface area, high mechanical property, high energy storage capacity, high-efficiency charge-discharge capacity and the like.

Generally disclosed herein is a mechanism to mitigate power fluctuations of a data center by dynamically charging and discharging a capacitor-based energy storage device. According to some examples, a supercapacitor control system can be configured to monitor power demand fluctuations and initiate charging of the supercapacitor during a workload ramp-up period for training machine learning (ML) models with massive training data. As the system starts discharging the supercapacitors during the ramp-up period, the system is capable of reducing the rate of the power demand increase. Similarly, during a ramp-down period, the system is configured to charge the supercapacitor as the training of the ML model is being finished and the power demand decreases. The power stored in the supercapacitors may be used to reduce the rate of the power demand decrease when the training of the ML model is being completed, thereby maintaining the stability of the power utility.

One aspect of the present invention is a carbon dioxide adsorption battery comprising: a positive electrode; a negative electrode; a separator disposed between the positive electrode and the negative electrode; an electrolyte layer disposed between the negative electrode and the separator; and a flow path connected to the negative electrode. The electrolyte layer includes an electrolyte capable of dissolving carbon dioxide, and a compound capable of adsorbing and desorbing carbon dioxide by electrochemical reaction. The negative electrode is an electrode capable of transmitting gas, and the positive electrode is provided with a porous electrode containing an electrolyte.

An electronic lock that includes a hybrid capacitor in the power supply circuit that also includes a battery as the primary source of electrical power. A Li-SOCl2 battery is used as the primary power source, and the hybrid capacitor is used as a secondary (or backup) power source, and the power supply circuit disclosed herein overcomes many of the shortcomings of those two individual power sources. A proper combination of these two solutions is very complimentary in terms of delivering the power needs of electronic lock systems over a wide temperature range, operational conditions, and battery discharge states. The results obtained by use of this type of power supply circuit are increased primary battery longevity, increased performance at low temperatures, easier battery level sensing of the primary Li-SOCl2 cell, as well as overcoming the voltage delay that is present in primary batteries of this chemistry.

The invention relates to the technical field of activated carbon production, in particular to a method for producing capacitive activated carbon from ultra-low-ash low-rank coal, which comprises the following steps: taking low-ash low-rank coal as a raw material, and effectively removing ash and inorganic salt through crushing, deionized water cleaning and vacuum drying; the pore structure is optimized through activating agent mixing and microwave assistance, and the mesoporosity is improved; carrying out post-treatment, removing the residual activating agent through diluted hydrochloric acid ultrasonic cleaning, and drying and forming; finally, a high-density oxygen / nitrogen-containing functional group is introduced through oxidizing agent surface modification and urea high-temperature nitrogen doping, and the pseudocapacitance effect and the electrochemical performance are remarkably enhanced. Through repeated cleaning with deionized water and combination of vacuum drying, the ash removal rate is increased to 95% or above, oxidation side reaction is avoided, and the purity of the raw materials is guaranteed; meanwhile, microwave-assisted activation is introduced, intercalation reaction of the activating agent and coal is accelerated by microwave selective heating, and mesoporous generation is promoted by microwave-induced molecular vibration.

A multilayer structure is provided, comprising a metal substrate and an electrode above the metal substrate. An adhesion layer is positioned between a main surface of the metal substrate and the electrode.

The application provides a metal organic polyhedral cross-linked gel electrolyte and a preparation method and application thereof, and belongs to the technical field of secondary batteries and polymer electrolytes.The metal organic polyhedral cross-linked gel electrolyte is composed of a chemical cross-linked network, a zinc salt and a solvent; the chemical cross-linked network is constructed by a first polymer and a metal organic polyhedron through coordination bonding; and the metal organic polyhedral cross-linked gel electrolyte further comprises a second polymer interpenetrating in the chemical cross-linked network to form a semi-interpenetrating network structure.The cross-linked network structure of the gel electrolyte is stable and uniform, and structural defects of a traditional MOPs-based electrolyte are completely avoided; mechanical properties and toughness are synergistically improved, zinc negative electrode dendrite growth is effectively inhibited; low-temperature electrochemical performance is excellent, and application limitations of zinc-based batteries under extreme working conditions are broken through; an electrochemical cycle life is super-long, and excellent long-term service stability is exhibited; and dual-function characteristics are combined, and the preparation efficiency and use safety of zinc-based batteries are improved.

The invention is applicable to the technical field of electrochemical energy storage, and provides a fluorine-containing alcohol-based diluent electrolyte and application thereof, the fluorine-containing alcohol-based diluent electrolyte comprises a solvent, a zinc salt and a fluorine-containing alcohol-based diluent, and the fluorine-containing alcohol-based diluent accounts for 10-90 vol% of the total volume of the electrolyte; the fluorine-containing alcohol-based diluent is at least one of a straight-chain fluoroalcohol compound and a derivative thereof, a branched-chain fluoroalcohol compound and a derivative thereof, and a naphthenic fluoroalcohol compound and a derivative thereof, and the fluorine-containing alcohol-based diluent has a hydrophilic hydroxyl group and a hydrophobic fluorine-containing carbon chain, and is induced to form a water-rich and water-poor interlaced three-dimensional microphase separation structure in the electrolyte; zinc ions are mainly located in a water-rich phase and keep water solvation, anions tend to be distributed in a water-poor phase, and the ion decoupling type local high-concentration electrolyte is formed. Zinc ions get rid of polyanion coordination clusters, migration resistance is reduced, ion mobility and conductivity are improved, hydrogen evolution side reactions are inhibited, zinc dendrites and corrosion are relieved, interface stability is remarkably improved, and the cycle life is prolonged.

A semiconductor memory device having a hybrid capacitor includes a cell transistor including a gate structure provided on a substrate, and a first impurity region and a second impurity region disposed on the substrate at both sides of the gate structure, a bit line structure electrically connected to the first impurity region, and a hybrid capacitor including a control element electrically connected to the second impurity region and configured to control the flow of current by changing a resistance thereof according to a magnitude of an applied voltage, and a cell capacitor connected in series to the control element and functioning as a storage node configured to store charges, wherein the control element includes a first electrode, a switching material layer, and a second electrode, and the cell capacitor includes the second electrode, a capacitor dielectric layer, and a third electrode.

To provide an aerosol delivery device that includes: a substrate 610 configured to carry an aerosol precursor composition; and a resonant transformer 1202 including a transmitter coupling device 302 and a resonant receiver coupling device 602 that is positioned in proximity to the substrate.SOLUTION: The aerosol delivery device also includes a pulse width modulation (PWM) inverter 1204 configured to drive the resonant transformer. The PWM inverter includes: a bridge circuit 1206 coupled to the transmitter coupling device; and a PWM controller 1208 embodied as an integrated circuit and configured to output a PWM signal to the bridge circuit, where the bridge circuit is configured to drive the transmitter coupling device to generate an oscillating magnetic field and induce an alternating voltage in the resonant receiver coupling device when exposed to the oscillating magnetic field. The alternating voltage causes the resonant receiver coupling device to generate heat and thereby vaporize components of the aerosol precursor composition.SELECTED DRAWING: Figure 12

The invention provides a method for preparing a high-performance carbon material from coal liquefied asphalt, and belongs to the technical field of activated carbon preparation. The preparation method comprises the following steps: mixing the coal liquefied asphalt and an extraction agent, and carrying out hot extraction to obtain ash-free extracted asphalt and extraction residues; the extraction residues are subjected to pyrolysis, and pyrolysis tar is obtained; and mixing the pyrolytic tar with the ash-free extracted asphalt, carbonizing and activating to obtain the carbon material. According to the present invention, the ash-free extraction asphalt is extracted from the coal liquefaction asphalt by using the thermal extraction manner, the ash-free extraction asphalt and the tar obtained through the pyrolysis of the extraction residue are mixed to form the asphaltene-based interpenetrating network structure precursor, and the thermal stability of the pyrolysis tar and the thermal stability of the extraction asphalt are different so as to achieve the purpose of the asphaltene-based interpenetrating network structure precursor; easily decomposed components in the pyrolysis tar are volatilized in the carbonization process to form an interpenetrating network pore structure in the carbon matrix, so that the performance of the carbon material is improved.

The invention discloses an automatic assembly welding machine for supercapacitors, comprising a frame, wherein a first turntable device and a second turntable device are provided on the frame, a plurality of jigs are provided on the first turntable, and a plurality of positioning clamps are provided on the second turntable; a cover plate feeding device, an upper connecting piece feeding device, a first laser welding device and a transfer device are provided on the periphery of the first turntable; a core body feeding device, a lower connecting piece feeding device, a second laser welding device, a core body turning device, a third laser welding device, a bending device and a material unloading and conveying device are provided on the periphery of the second turntable, so as to realize automatic feeding, assembly, welding and unloading of the cover plate, the upper connecting piece, the core body and the lower connecting piece, and no manual operation is required during the process, so as to reduce the labor intensity; moreover, a plurality of jigs and a plurality of positioning clamps are rotated to switch different positions and work at the same time, so as to improve the assembly welding efficiency.

The utility model provides a gridding temperature self-balancing super capacitor system, which comprises a multilayer gridding structure capacitor bank formed by stacking a plurality of capacitor units (11), the system comprises cooling units arranged around the capacitor units (11), and a plurality of temperature self-balancing super capacitor units (11) arranged on the periphery of the cooling units, the number of the cooling units being in one-to-one correspondence with the number of the capacitor units (11), and the number of the cooling units being in one-to-one correspondence with the number of the capacitor units (11) and being in one-to-one correspondence with the number of the capacitor units (11). Wherein the cooling unit comprises a cooling pipeline arranged around the capacitor unit (11), the two ends of the cooling pipeline are communicated with the liquid storage tank (1), and a bidirectional electromagnetic valve (2) used for controlling the flowing direction of substances in the pipeline is arranged between the cooling pipeline and the liquid storage tank (1).

This application provides a multilayer structure. This multilayer structure comprises a semiconductor or insulator substrate. The substrate has a main surface. An electrode containing a noble metal or a conductive oxide is arranged above this main surface. An electroceramic layer is arranged above the electrode. In the multilayer structure, an adhesion layer is arranged between the main surface of the substrate and the electrode.

The invention relates to the technical field of nano materials, and discloses a ZnO nanowire as well as a preparation method and application thereof. The ZnO nanowire is formed by mutually connecting ZnO nano-particles, and the particle size of the ZnO nano-particles is 5-50 nm; wherein the length-diameter ratio of the ZnO nanowire is 80-350, and the specific surface area of the ZnO nanowire is 100-200m < 2 > / g. The ZnO nanowire disclosed by the invention has a special bead-like structure, and the structure not only keeps the specific characteristics of high length-diameter ratio and high specific surface area of the ZnO nanowire, but also can expose more active sites, so that the catalytic performance, the adsorption performance and the gas-sensitive performance of the ZnO nanowire are favorably improved.

This method for manufacturing an electric power storage module comprises a first inspection step for inspecting a module to be inspected within a chamber. In the first inspection step, the following inspections are performed simultaneously: a first airtightness inspection between a first cell and a first adjacent cell that includes an internal space adjacent to an internal space of the first cell, among a plurality of cells to be inspected; and a second airtightness inspection between the first cell and a second adjacent cell that includes a frame adjacent to a first cell frame, among the plurality of cells to be inspected.

The invention belongs to an alkali treatment surface modification MXene material preparation method and an electrolyte, Ti3AlC2 powder is slowly added into polytetrafluoroethylene containing concentrated HCl and LiF, aluminum layer etching is carried out, and after etching is completed, washing is carried out until the solution is neutral; dispersing the obtained product in water, continuously introducing inert gas for degassing treatment, sealing at room temperature for ultrasonic stripping, centrifuging the obtained dispersion liquid, and freeze-drying the supernate to obtain the few-layer Ti3C2Tx nanosheet; the method comprises the following steps: weighing a few layers of Ti3C2Tx nanosheets, slowly adding an alkali solution under stirring, carrying out a stirring reaction under inert gas, carrying out vacuum filtration on a reacted sample, washing a filter cake with water until a filtrate is neutral, and carrying out freeze drying to obtain surface functionalization modified MXene. The electrochemical performance research of the material finds that the alkali intercalation modified MXene has excellent ion capture performance and good stability on various ions (Na < + >, Pb < 2 + >, Al < 3 + > and the like).

A system for collection of static electricity deploys a plurality of planar capacitors connected in parallel and aligned to form a capacitor stack, which has two parallel and opposing major surfaces arranged for receiving a static electricity charge from the atmosphere. The system also includes electronic circuitry in communication with the capacitor stack. The electronic circuitry is configured to cause the static electricity charge to at least partially discharge thereinto so as to prepare the capacitor stack for receiving an additional static electricity charge from the atmosphere.

A nanocomposite electrode including a substrate, a binding compound, a conductive additive, and NiO / Fe2VO4 nanoparticles. The NiO / Fe2VO4 nanoparticles have a substantially spherical shape. A mixture of the binding compound, the conductive additive and the NiO / Fe2VO4 nanoparticles, is at least partially coated on a first surface of the substrate. A method of making the NiO / Fe2VO4 nanoparticles is described.

The utility model relates to a welding-free universal serial bus (USB) rechargeable battery, which comprises a metal barrel shell, a printed circuit board (PCB), a battery cell, a USB interface and a cap, and is characterized in that the PCB is electrically connected with a positive terminal, a negative terminal and a negative conducting piece; the battery cell is mounted in the metal barrel shell, a positive electrode pin of the battery cell is inserted into the positive terminal, and a negative electrode pin of the battery cell is inserted into the negative terminal; one end of the negative electrode conduction piece abuts against the side wall of the metal barrel shell to form electric connection; and the USB interface is electrically connected with the PCB. According to the welding-free USB rechargeable battery, the positive terminal and the negative terminal are electrically connected with the PCB, the positive pin of the battery cell is inserted into the positive terminal, and the negative pin of the battery cell is inserted into the negative terminal, so that quick insertion connection and electric conduction between the battery cell and the PCB are realized, and welding is not needed; one end of the negative electrode conduction piece is electrically connected with the PCB, and the other end of the negative electrode conduction piece is electrically connected with the metal barrel shell, so that quick connection and electric conduction between the metal barrel shell and the PCB are realized; when charging is needed, a charging head is inserted into the USB interface; after the battery is fully charged, the positive electrode connecting pin of the positive electrode cap is electrically connected with the PCB, the positive electrode is conducted, meanwhile, the negative electrode of the battery cell is electrically connected with the side wall of the metal barrel shell through the negative electrode conduction piece, and the negative electrode is conducted; the welding-free USB rechargeable battery is convenient to produce, the production cost is reduced, and welding-free installation of the rechargeable battery is realized.

Handheld scanner (100), including: a housing (115) with an opening (125); an internal power source (155) located inside the housing (115) and having an active state in which output power is provided and a shutdown state in which no output power is provided; a power source monitoring system (160) configured to detect whether the internal power source (155) has reached a predetermined discharge level at which the internal power source (155) should be switched off to prevent damage to the internal power source (155); an image sensor (135) directed towards the aperture (125) and configured to (i) be powered by the internal power source (155) when the internal power source (155) is in the active state, and (ii) capture image data representing an environment in a field of view of the handheld scanner (100); a barcode decoder (140) which communicates with the image sensor (135) and is configured to (i) be powered by the internal power source (155) when the internal power source (155) is active, (ii) receive the image data and (iii) decode a barcode captured in the image data; an indicator (175); and a processor (145) configured to: to be supplied with energy by the internal power source (155) when the internal power source (155) is in the active state, to detect, based on one or more outputs of the power source monitoring (160), whether the internal power source (155) has reached the predetermined discharge quantity, and when the internal power source (155) has reached the predetermined discharge quantity: to configure the indicator (175) to provide an indication that the internal power source (155) is switched off while the internal power source (155) is in the shutdown state, and to put the internal power source (155) into the shutdown state, so that the image sensor (135), the character decoder (140) and the processor (145) are switched off.

Provided is a capacitor, and more preferably a hybrid capacitor, and a method of making the capacitor. The capacitor comprises an anode, with a dielectric on the anode, and a cathode with a barrier layer on the cathode. A separator, conductive polymer, liquid electrolyte and stabilizer are between the anode and

A multilayer structure is provided, comprising a metal substrate and an electrode above the metal substrate. An adhesion layer is positioned between a main surface of the metal substrate and the electrode.