25results 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.

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 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.

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.

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.

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.

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 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.

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.

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 nitrogen-containing heterocyclic ring dihalogen or nitrogen-containing heterocyclic ring bisphenol compound, a nitrogen-containing heterocyclic ring carbon chain polymer and a preparation method and application of the nitrogen-containing heterocyclic ring dihalogen or nitrogen-containing heterocyclic ring bisphenol compound and the nitrogen-containing heterocyclic ring carbon chain polymer. A nitrogen heterocyclic ring compound, a halogen-containing aromatic hydrocarbon compound or a hydroxyl-containing aromatic hydrocarbon compound are subjected to a Friedel-Crafts reaction, and the nitrogen-containing heterocyclic ring dihalogen or bisphenol compound is prepared; the nitrogen-containing heterocyclic ring dihalogen or bisphenol compound is subjected to a coupling reaction under the catalysis of transition metal to obtain a nitrogen-containing heterocyclic ring carbon chain polymer, and the nitrogen-containing heterocyclic ring carbon chain polymer is prepared into a film or ionomer adhesive with excellent free radical resistance and alkali resistance. In the process of preparing the nitrogen-containing heterocyclic bisphenol compound through the Friedel-Crafts reaction and preparing the nitrogen-containing heterocyclic carbon chain polymer through the coupling reaction, superacid does not need to be used, use of the superacid can be avoided, on one hand, the production cost can be reduced, and on the other hand, pollution to the environment can be reduced.

The invention relates to the technical field of orchard robots, in particular to an anti-attenuation system and method for a range-extending type super-capacitor orchard robot in a low-temperature environment, and the method comprises the steps: obtaining an anti-attenuation control instruction containing robot attributes and super-capacitor parameters; predicting environment features based on robot attributes, and generating a multi-cluster environment feature flow; registering and optimizing the super capacitor database by combining the attributes and the parameters, and determining an optimized parameter library; an anti-attenuation control learner and a loss analyzer are introduced, and a dual-channel control system is constructed through loss optimization learning; and finally, inputting the capacitance parameter and the environment characteristic flow into double channels to generate an anti-attenuation control report. According to the method, through environment dynamic prediction, data driving optimization and multi-model collaborative learning, accurate hierarchical regulation and control of the capacitance attenuation risk in the low-temperature environment are achieved, and the endurance stability and operation reliability of the orchard robot are remarkably improved.

The invention relates to the technical field of charging and discharging management of super capacitors, and discloses a charging and discharging management method and device of a super capacitor, electronic equipment and a storage medium, and the method comprises the steps: obtaining and analyzing historical time sequence data of the super capacitor, and combining real-time state information to generate charging and discharging working parameters of the specified super capacitor. The method has the beneficial effects that the self-adaptive control of the charge and discharge strategy based on the aging state is realized, and compared with a static management mode based on a fixed voltage threshold in the prior art, the method can accurately sense the aging state change of the capacitor caused by the use process, so that the most suitable management strategy is formulated for the capacitors in different health states, and the management efficiency is improved. The problems of over-charging, over-discharging and the like caused by strategy misalignment are effectively avoided, the aging speed of the capacitor is obviously delayed, and the service life of the capacitor is prolonged.

having a multi-layered structure a non-precious metal substrate whose main surface has a surface roughness (R a ) from 10 nm to 2 µm and which contains, for example, titanium, aluminum, nickel, copper, brass or stainless steel, an electrode arranged above the non-precious metal substrate, containing a precious metal or a conductive oxide, and a piezoelectric layer arranged above or on the electrode, wherein an adhesion layer comprising a transition metal oxide excluding titanium oxide, arranged between and in direct contact with a main surface of the metal substrate and the electrode.

The present invention relates to a method (100) for obtaining supercapacitors in which the structure obtained by growing molybdenum boride (Mo2B), a member of the metal boride family, homogeneously, atomically thick and in crystalline form on a copper substrate by using chemical vapor deposition technique is used as an electrode, and to a supercapacitor obtained by the method (100).

The utility model relates to the technical field of energy storage devices, in particular to a super capacitor module. The super capacitor comprises a plurality of series-connected super capacitor monomers and a plurality of passive equalization circuits, and each monomer corresponds to one passive equalization circuit. A voltage dividing network of the passive equalization circuit is formed by connecting resistors R1 and R2 in series and is in bridge connection with the positive electrode and the negative electrode of the super capacitor monomer, and the reference end of the voltage reference chip is connected with a voltage dividing node and used for monitoring monomer voltage. And when the single voltage exceeds a set threshold value, the voltage reference chip drives the Darlington tube, so that the resistors R61 and R62 establish an energy dissipation loop until the voltage falls back. The module also has the functions of overvoltage alarm and internal temperature monitoring, overvoltage alarm is realized through an LED and an optocoupler, and temperature is led out through voltage division of an NTC sensor. The module adopts the switch resistance type passive equalization circuit, so that the circuit structure is simplified, the number of elements and the hardware cost are reduced, and the overall energy utilization rate and the working performance of the module in a high-power multi-cascade scene are improved.

This invention discloses a method for calculating the number of branches in a supercapacitor branch model and a method for modeling the model, specifically relating to the field of supercapacitor modeling. The method includes: determining the relationship between branch time constants and resistance / capacitance based on charge redistribution phenomena; determining the resistance and capacitance of the first branch based on supercapacitor cyclic charge-discharge tests, and determining the first branch time constant using the relationship between the branch time constant and resistance / capacitance; determining the number of branches in the supercapacitor based on the relationship between the time constants of each branch, the first branch time constant, and a preset model prediction time. This invention determines the relationship between branch time constants and resistance / capacitance through charge redistribution phenomena, and further determines the time constants of each branch through experimental testing. It determines the model prediction time based on operating conditions, and uses a preset multiple of the branch time constant as the prediction time to determine the number of branches, thus better predicting external characteristics under different operating conditions.

To provide a negative electrode with suppressed polarization containing metallic lithium, a nonaqueous electrolyte power storage element including the same, and their manufacturing methods.SOLUTION: A negative electrode for a nonaqueous electrolyte power storage element includes a negative electrode active material layer including metallic lithium and a coating layer including particles containing a zinc element stacked on the surface of the negative electrode active material layer.SELECTED DRAWING: Figure 1

Passivation methods and compositions for electrode binders are disclosed. A coated binder particle for use in an electrode film of an energy storage device is provided. The coated binder particle can comprise a coating over the surface of a binder particle, wherein the coating provides ionic insulation to the binder particle. In some embodiments, the coating covers the entire surface of the binder particle. In still further embodiments, a coated binder particle in an energy storage device blocks ionic contact between the binder and an electrolyte.

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.