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42results about How to "Reduce AC impedance" patented technology
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LTCC low temperature co-fired ceramic flat surface transformer
InactiveCN101789311AIncreasing the thicknessMiniaturizationTransformers/inductances coils/windings/connectionsTransformers/inductances magnetic coresCapacitanceCoupling
The invention relates to an LTCC low temperature co-fired ceramic planar transformer. The transformer comprises a ferrite magnetic core composed of an upper magnetic core and a lower magnetic core. The transformer is characterized in that the transformer also comprises an LTCC planar transformer base plate provided with at least one group of planar coil component, each planar coil component comprises a primary coil with high coupling coefficient and a secondary coil; the LTCC planar transformer base plate is provided with one or three penetrating holes used for assembling the ferrite magnetic core; and the upper and lower magnetic cores separately penetrate the penetrating holes from the upper and lower sides of the LTCC planar transformer base plate and are butted and adhered together to form the ferrite magnetic core. Compared with the traditional planar transformer, the LTCC low temperature co-fired ceramic planar transformer of the invention has the following beneficial effects: the transformer of the invention has low direct current impedance, leakage inductance and distributed capacitance and can satisfy the design requirement of the resonance circuit; and as the magnetic core has good magnetic shielding, the transformer can inhibit the radio frequency interference.
Owner:SHENZHEN SUNLORD ELECTRONICS
Preparation method of micron flower-ball-shaped high-performance full-hydrolytic bifunctional electrocatalyst FeOOH/Ni3S2
ActiveCN109794264AEasy to prepareEasy to operatePhysical/chemical process catalystsElectrodesPtru catalystNickel substrate
The present invention relates to a preparation method of micron flower-ball-shaped high-performance full-hydrolytic bifunctional electrocatalyst FeOOH / Ni3S2. According to the method, firstly, thioureaand nickel nitrate are adopted as raw materials, ethanol is adopted as a solution, cetyl trimethyl ammonium bromide is adopted as a surfactant, a solvothermal method is utilized to generate Ni3S2 ona foamed nickel substrate in situ, and then the micron flower-ball-shaped electrocatalyst FeOOH / Ni3S2 is formed on Ni3S2 through one-step electrochemical deposition. The composite catalyst FeOOH / Ni3S2 obtained by means of the method is low in overpotential and high in stability and has a broad application prospect in the aspects of preparation of clean hydrogen energy through electrocatalytic water decomposition and the like.
Owner:HEBEI UNIV OF TECH
Light-emitting device and illumination apparatus
InactiveCN101871585AEliminate the effects ofAvoid flickeringPoint-like light sourceElectrical apparatusEffect lightNegative power
A light-emitting device and an illumination apparatus are disclosed. A plurality of LED elements (91) are connected in series between positive and negative lines (9a and 9b), and first bypass capacitor (92) is connected in parallel to the LED elements respectively. Each series circuit of a predetermined number of LED elements is connected in parallel to second bypass capacitors (93a, 93b and 93c). As a result, with the negative power line (9b) set as a grounding point (A), the AC impedance at connection points (B, C, D) of the series circuit of the LED elements (91a to 911) against the ground is reduced. Thus, the erroneous lighting or ''flicker'' of each LED which otherwise might be caused by an external noise is prevented.
Owner:TOSHIBA LIGHTING & TECH CORP +1
Modified carbon nano tube and preparation method thereof, lithium ion battery anode and preparation method thereof and lithium ion battery
ActiveCN105206839AIncrease repulsionEasy to disperseMaterial nanotechnologyCell electrodesAc impedanceCarbon nanotube
The invention provides a modified carbon nano tube and a preparation method thereof, a lithium ion battery anode and a preparation method thereof and a lithium ion battery. The modified carbon nano tube comprises a carbon nano tube and a polar group on the surface of the carbon nano tube, wherein the polar group is -COOLi. The modified carbon nano tube provided by the invention has the characteristics of being easy to disperse, low in dispersing cost and good in electrical conductivity; compared with a lithium ion battery adopting the dispersion liquid of an unmodified carbon nano tube as a conductive agent, the lithium ion battery adopting the dispersion liquid of the carbon nano tube as a conductive agent has a lower direct current impedance and alternating-current impedance, and is greatly improved in the high-rate charge-discharge capability.
Owner:BYD CO LTD
Generator-rotor inter-turn short circuit diagnosis device based on excitation step method and method thereof
ActiveCN106772028AAvoid Vibration Condition DeteriorationReduce testing costsElectric winding testingDynamo-electric machine testingData acquisitionConductor Coil
The invention discloses a generator-rotor inter-turn short circuit diagnosis device based on excitation step method. The device comprises a direct current constant voltage source and data acquisition analyzers. The direct current constant voltage source is connected to an excitation winding through a first program control switch. A sampling resistor is connected in series to the excitation winding. The data acquisition analyzers are connected in parallel to two ends of the sampling resistor. The data acquisition analyzers determine whether a motor rotor winding generates an inter-turn short circuit through collecting an excitation current of the rotor winding. Two ends of the excitation winding are connected in parallel to a de-excitation resistor through a second program control switch. By using the device and the method of the invention, disadvantages in the prior art can be overcome, and an off-line diagnosis level of a turbonator rotor winding inter-turn short circuit fault is improved.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)
High-temperature planar transformer employing metal coated ceramic substrate
ActiveCN107799280AMeet high temperature working requirementsConvenience to workTransformers/inductances coils/windings/connectionsTransformers/inductances magnetic coresCapacitanceConductor Coil
A high-temperature planar transformer employing a metal coated ceramic substrate comprises a dual-annular closed-structure magnetic core and multiple groups of ceramic substrate planar coils employinga metal coated technology, wherein the dual-annular closed-structure magnetic core is formed by splicing a group of Fe-Ni-Mo metal magnetic powder cores, all planar coil assemblies form a primary winding and a secondary winding of the transformer, an installation hole is reserved in the ceramic substrate employed by the high-temperature planar transformer and is used for placing the metal magnetic powder core material magnetic cores, and two parts of magnetic cores are placed in the installation hole from two sides of the ceramic substrate and then are abutted and pasted to a whole. Comparedwith a traditional winding transformer and a planar transformer, the high-temperature planar transformer employing the metal coated ceramic substrate has the following advantages that the power density of the transformer can be substantially improved by employing the metal coated ceramic substrate, the leakage inductance and the distributed capacitance of the transformer are reduced, the cooling efficiency is improved, moreover, the transformer can work for a long time in a high-temperature environment of 200 DEG C or above, so that the cooling design of the transformer can be simplified, thesize and the weight of the transformer are reduced, and meanwhile, the design requirement of aerospace and oil drilling in high-temperature environment industry on a switch power supply is met.
Owner:杨杰
Controlled and monitored width-adjusting servo system of brushless torque motor
ActiveCN102158156ATroubleshoot electromagnetic interferenceAdd matching inductanceSingle motor speed/torque controlElectronic commutatorsAccelerometerSignal processing circuits
The invention provides a controlled and monitored width-adjusting servo system of a brushless torque motor, which is used for controlling positions of an accelerometer and a rotary table and comprises a signal processing circuit, a comparator and optocoupler isolated circuit, a triangular wave circuit, a motor drive circuit, a Hall switch, a bus control interface circuit, an I2C (Inter-IC) monitoring interface circuit, a microsyn and a brushless torque motor. An alternating-current signal output by the microsyn is proportional to an angle; and a drive motor outputs a corresponding torque by the signal processing circuit, the triangular wave circuit, the comparator and optocoupler isolated circuit and the motor drive circuit, thus avoiding loading torques and friction torques. The servo system is provided with the bus interface circuit and the I2C monitoring interface circuit, thus computer buses can be utilized to control and monitor the connection / disconnection of the system, thus realizing a bus controlling and monitoring function and remotely controlling and monitoring the system. A special motor driver is utilized in the system, thus the system has the advantages of simple design, reliability in operation and small volume. A three-phase brushless torque motor is adopted in the system, and the Hall switch is embedded into a motor body, so the volume is small and the operation is reliable.
Owner:BEIJING INST OF AEROSPACE CONTROL DEVICES
Method for preparing graphene/sodium manganate flexible thin film and method using graphene/sodium manganate flexible thin film to prepare aqueous sodium-zinc compound battery
ActiveCN107154496AImprove conductivityImprove electrochemical performanceCell electrodesGrapheneZinc compoundsCvd graphene
The invention discloses a method for preparing a graphene / sodium manganate flexible thin film and a method using the graphene / sodium manganate flexible thin film to prepare an aqueous sodium-zinc compound battery, relates to methods for preparing graphene thin films and methods using the graphene thin films to prepare compound batteries, and aims to solve the problem that an existing battery anode material is complex in preparation process, low in conductivity and unstable in electrochemical performance. The method for preparing the graphene / sodium manganate flexible thin film includes the steps of firstly, preparing Na4Mn9O18 powder; secondly, adding graphene oxide into deionized water, and performing ultrasonic treatment to obtain a solution A; thirdly, preparing a graphene oxide / sodium manganate flexible thin film; fourthly, drying the graphene oxide / sodium manganate flexible thin film to obtain the graphene / sodium manganate flexible thin film. The prepared graphene / sodium manganate flexible thin film is simple in process, has sufficient toughness, can be curled at will and can be directly cut to serve as a flexible electrode. By the methods, the graphene / sodium manganate flexible thin film and the aqueous sodium-zinc compound battery can be prepared.
Owner:ANKANG UNIV
Platinum black pulse plating method based on ultrasonic assistance
The invention discloses a platinum black pulse plating method based on ultrasonic assistance and belongs to the field of biomedicine engineering technology. The method comprises the steps of: vertically putting an electrode to be platinized and a platinum wire auxiliary electrode into an electroplate liquid and respectively connecting with the positive pole and the negative pole of a power supply; then applying pulse current and starting an ultrasonic device at the same time; and finally turning off the power supply and the ultrasonic device, taking the platinized electrode out and washing with deionized water to obtain a platinum black plating layer attached to the platinized electrode. The platinum black obtained by the invention can obtain greatly reduced particle diameter and better bonding force between the plating layer and a microelectrode substrate and is not easy to fall off to cause failure of the electrode; in addition, the platinized microelectrode obtains greatly reduced AC impedance and greatly increased electrode charge injection capacity and charge storage capacity, which is beneficial to the reduction of embedded system power consumption and the improvement of electric stimulus effect.
Owner:SHANGHAI JIAO TONG UNIV
Furnace core coil type high-medium-low frequency smelting furnace
InactiveCN106091683AImprove power supply efficiencyReduce heat lossCrucible furnacesCombustion chamberClosed loop
Disclosed is a furnace core coil type high-medium-low frequency smelting furnace. A furnace core power supply coil and a center iron core are designed in the center of a combustion chamber of the high-medium-low frequency smelting furnace. The furnace core power supply coil is wound on the center iron core. The center iron core is fixed to the center of the furnace bottom perpendicularly, or the center iron core in the combustion chamber and part of an iron core arranged at the furnace bottom and on a furnace shell form an E-shaped magnetic field loop. The furnace core power supply coil and the center iron core have cooling measures. The middle of the furnace bottom of the smelting furnace is provided with cooling medium inlet-outlet connectors of the furnace core power supply coil and the center iron core. Insulation and refractory materials are arranged outside the center iron core and the furnace core power supply coil, and the center iron core and the furnace core power supply coil are isolated from combustion chamber working materials. Magnetism isolating is conducted on the furnace bottom of the combustion chamber of the smelting furnace and the furnace shell, suitable materials are selected, a closed loop and eddy heating are prevented, and water cooling is conducted on the smelting furnace shell in necessity.
Owner:巴涌
Radiation-proof liquid crystal display panel
InactiveCN111427185AGood radiation protectionImprove water resistanceNon-linear opticsOptical elementsCrystallographyLiquid-crystal display
The invention relates to the field of displays, in particular to a radiation-proof liquid crystal display panel which comprises a liquid crystal display panel body and a panel frame, wherein the liquid crystal display panel body is embedded in the panel frame, and a protective film is arranged on the liquid crystal display panel body. The protective film comprises an antistatic layer, a base layerand an anti-radiation layer, wherein the anti-radiation layer is located above the base layer, and the antistatic layer is located above the anti-radiation layer. The problems that various functionalcomputer protective films exist on the market at present, but most computer protective films are high-molecular polymer films such as PE, PVDC and the like which are synthesized and prepared from petrochemical materials, but do not have a radiation-proof function. The liquid crystal display panel provided with the protective film can have a good anti-radiation effect in use.
Owner:泉州市鑫创园智能科技有限公司
Ce-doped polyaniline/active carbon hybrid button supercapacitor
ActiveCN105513813ALarge specific surface areaImprove electrochemical activityHybrid capacitor electrodesDouble layer capacitorsHybrid typeMicrosphere
The invention discloses a Ce-doped polyaniline / active carbon hybrid button supercapacitor. The capacitor comprises a capacitor housing, an anode sheet, a cathode sheet, a diaphragm and an electrolyte, wherein the anode sheet is prepared by a polyaniline hollow microballoon active substance whose surface is doped with trivalent cerium ions, and the cathode sheet is prepared by a cathode material containing an active carbon active substance. The Ce-doped polyaniline / active carbon hybrid button supercapacitor obtained after assembling is large in specific capacity, small in AC impedance and quite small in leakage current density.
Owner:CENT SOUTH UNIV
Electrode material of carbon black-carbon nanotube mixed filled silica gel and process thereof
PendingCN114854202AGood synergyImprove bulk conductivityOrganic conductorsCarbon-silicon compound conductorsPolymer scienceModified carbon
The invention relates to an electrode material of carbon black-carbon nanotube mixed filled silica gel and a process thereof. According to the scheme, the process comprises the following steps: S00, respectively preparing modified carbon black and modified carbon nanotubes subjected to surface grafting treatment by using a silane coupling agent; s10, taking a proper amount of modified carbon black and modified carbon nanotubes, adding a proper amount of a dispersion medium, carrying out ultrasonic treatment until full dispersion, immediately taking a suspension, stirring and mixing the suspension and liquid silicone rubber for a set time, adding a curing agent in the midway, and continuously stirring until the mixture is uniform to obtain a mixed solution; wherein the weight ratio of the carbon black to the carbon nanotubes is 9: 1-1.5: 1; and S20, the mixed solution is poured into a mold and subjected to vacuum defoaming till defoaming is completed, heating curing is conducted till curing forming is conducted, the electrode material is taken out, and the electrode material is obtained, and the weight ratio of the silica gel to the filler is 100: 7-100: 3. The electrode material prepared by the invention has excellent conductivity, flexibility and dimensional stability, and can be used for wearable equipment for collecting and conducting bioelectricity.
Owner:浙江柔灵科技有限公司
Small-sized two-pole single-phase generator
InactiveCN101951044AEffective control of winding temperature riseImprove the stability of the magnetic field line distribution stateMagnetic circuit rotating partsMagnetic circuit stationary partsSingle-phase generatorDynamo
The invention discloses a small-sized two-pole single-phase generator, comprising a rotor (1) and a stator (2), wherein, the rotor stretches into the stator (2); coiling grooves (3) are distributed at the upper part and the lower part of the rotor (1); winding coils (4) are arranged at the two sides of the iron core of the stator (2); the winding coils (4) are secondary windings; winding assemblies are arranged at the upper part and the lower part of the iron core of the rotor (1), and are arranged symmetrically; and sawtooth-shaped radiating grooves (7) are distributed on the outer surface of the iron core of the stator (2). The small-sized two-pole single-phase generator of the invention greatly lowers the waveform sinusoidal aberration rate of the voltage output by the generator, greatly enhances the adaptability to the capacitive load, and is beneficial for prolonging the service of the electric appliances.
Owner:江苏神驰机电有限公司
Nanometer silicon composite particle, negative plate and solid lithium battery
PendingCN114551818AOvercome volumeOvercoming the disadvantages of continuous growth of the surface SEI layerMaterial nanotechnologySecondary cellsNano siliconOrganosolv
The invention relates to the technical field of battery materials, and discloses a nano silicon composite particle, a negative plate and a solid lithium battery, the nano silicon composite particle is N-P-COF-GO modified nano silicon composite particle, COF and GO are loaded on the surface of the silicon nano particle, and N and P are co-doped in the COF and GO; the preparation method comprises the following steps: dispersing silicon nanoparticles, a phosphorus source material, a nitrogen source material and graphene oxide in an organic solvent, and synthesizing N-P-COF-GO modified nano silicon composite particles by adopting a solvothermal method; the negative plate and the solid lithium battery are prepared from the nano silicon composite particles. According to the invention, the defects of obvious volume expansion and continuous growth of a surface SEI layer of a silicon material in continuous charging and discharging are overcome, rapid transmission and storage of lithium ions are realized, and a negative plate and a solid lithium battery prepared from the nano silicon composite particles have lower alternating current impedance and higher discharge capacity and cycle performance.
Owner:WANXIANG 123 CO LTD
LED (light emitting diode) lamp using inductance voltage reduction
InactiveCN106163014ANo high feverHigh AC impedanceElectrical apparatusElectroluminescent light sourcesWork performanceInductor
The invention relates to an LED (light emitting diode) lamp using inductance voltage reduction. The LED lamp comprises a voltage stabilizing diode VD and a rectistack D, wherein the voltage stabilizing diode VD is connected in series with the LED lamp. The LED lamp is characterized in that the alternating current input end of the rectistack D is respectively connected with a first inductor L1 and a second inductor L2. The LED lamp has the advantages that the characteristics of the inductance are used; the alternating current impedance is high; the direct current impedance is small; inductors are connected in series in the power supply input end of the LED lamp; the voltage of the alternating current is reduced; a power supply suitable for LEDs to work is obtained; meanwhile, the direct current can also smoothly pass through the inductors to return the line; high heat cannot be generated when the inductors work; the work performance is reliable.
Owner:周鸿德
A polyaniline hollow microsphere/zinc composite positive electrode material and button lithium battery
ActiveCN105514371BIncrease the gapImprove conductivityFinal product manufactureCell electrodesEmulsionComposite cathode
The invention discloses a polyaniline hollow microsphere / zinc composite positive electrode material and a button-type lithium battery. The active material of the positive electrode material is polyaniline hollow microsphere mixed with microspherical zinc powder; the button-type lithium battery includes a positive electrode , negative electrode, diaphragm, electrolyte and shell, the positive electrode is made of active material, acetylene black and polytetrafluoroethylene emulsion positive electrode material; the positive electrode material of button lithium battery has large specific surface area, high conductivity and good stability; further preparation The lithium battery has low AC impedance, good cycle performance, and has broader application potential.
Owner:CENT SOUTH UNIV
Composite porous carbon aerogel material as well as preparation method and application thereof
ActiveCN114195122AImprove structural strengthAvoid stackingCarbon preparation/purificationPorous carbonNetwork structure
The composite porous aerogel material comprises nanocellulose, graphene oxide and ZIF-Zn / Co, the nanocellulose and the graphene oxide are interwoven through intermolecular interaction force to form a 3D network structure, the ZIF-Zn / Co is uniformly dispersed on the 3D network structure through the intermolecular interaction force, and the material is in an inert atmosphere, so that the composite porous aerogel material is prepared. The composite porous carbon aerogel material has excellent electrochemical performance and mechanical strength, and can be used for preparing an electrode material.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
A kind of symmetrical button supercapacitor electrode material and symmetrical button supercapacitor
ActiveCN105513825BUniform particlesLarge specific surface areaHybrid capacitor electrodesHigh energySupercapacitor
The invention discloses a symmetrical button type supercapacitor electrode material and a symmetrical button type supercapacitor. The electrode material comprises a polyaniline hollow microballoon active substance whose surface is doped with trivalent cerium ions. The material has the advantages of large specific capacity, high energy density, high electrochemical activeness and the like, can be applied to preparation of an electrode slice material of a symmetrical button type supercapacitor, and can obtain a symmetrical button type supercapacitor advantaged in large specific capacity, small AC impedance and good voltage maintenance capability.
Owner:CENT SOUTH UNIV
A high-temperature planar transformer using metal-clad ceramic substrates
ActiveCN107799280BMeet high temperature working requirementsConvenience to workTransformers/inductances coils/windings/connectionsTransformers/inductances magnetic coresCapacitanceCeramic substrate
A high-temperature planar transformer using metal-bonded ceramic substrates, including a double-ring closed structure magnetic core spliced by a group of iron-nickel-molybdenum metal magnetic powder cores; multiple groups of ceramic substrate planes using metal-bonded technology coils, and all planar coil assemblies make up the primary and secondary windings of the transformer. The ceramic substrate used in the high-temperature planar transformer has a mounting hole for placing a magnetic core made of metal magnetic powder core, and two parts of the magnetic core are respectively put into the mounting hole from both sides of the ceramic substrate, and bonded together as a whole. Compared with traditional wire-wound transformers and planar transformers, the present invention is a high-temperature planar transformer using metal-bonded ceramic substrates. Inductance and distributed capacitance, improve heat dissipation efficiency, and can work for a long time in a high temperature environment above 200 ℃, so that the heat dissipation design of the transformer can be simplified, the size and weight of the transformer can be reduced, and it also meets the high temperature requirements of aerospace, oil drilling, etc. Design requirements for switching power supplies in the environmental industry.
Owner:杨杰
A modified carbon nanotube and its preparation method, lithium-ion battery positive electrode and its preparation method, and lithium-ion battery
ActiveCN105206839BIncrease repulsionGood dispersionMaterial nanotechnologyCarbon compoundsHigh rateModified carbon
The invention provides a modified carbon nano tube and a preparation method thereof, a lithium ion battery anode and a preparation method thereof and a lithium ion battery. The modified carbon nano tube comprises a carbon nano tube and a polar group on the surface of the carbon nano tube, wherein the polar group is -COOLi. The modified carbon nano tube provided by the invention has the characteristics of being easy to disperse, low in dispersing cost and good in electrical conductivity; compared with a lithium ion battery adopting the dispersion liquid of an unmodified carbon nano tube as a conductive agent, the lithium ion battery adopting the dispersion liquid of the carbon nano tube as a conductive agent has a lower direct current impedance and alternating-current impedance, and is greatly improved in the high-rate charge-discharge capability.
Owner:BYD CO LTD
Platinum black pulse plating method based on ultrasonic assistance
The invention discloses a platinum black pulse plating method based on ultrasonic assistance and belongs to the field of biomedicine engineering technology. The method comprises the steps of: vertically putting an electrode to be platinized and a platinum wire auxiliary electrode into an electroplate liquid and respectively connecting with the positive pole and the negative pole of a power supply; then applying pulse current and starting an ultrasonic device at the same time; and finally turning off the power supply and the ultrasonic device, taking the platinized electrode out and washing with deionized water to obtain a platinum black plating layer attached to the platinized electrode. The platinum black obtained by the invention can obtain greatly reduced particle diameter and better bonding force between the plating layer and a microelectrode substrate and is not easy to fall off to cause failure of the electrode; in addition, the platinized microelectrode obtains greatly reduced AC impedance and greatly increased electrode charge injection capacity and charge storage capacity, which is beneficial to the reduction of embedded system power consumption and the improvement of electric stimulus effect.
Owner:SHANGHAI JIAOTONG UNIV
A kind of polypyrrole-phosphorus molybdenum oxide supercapacitor material and its preparation method
ActiveCN110706936BEnhanced pseudocapacitive capacityStable regular octahedral cone structureHybrid capacitor electrodesHybrid/EDL manufacturePhosphomolybdic acidPolypyrrole
The invention relates to the technical field of phosphorus molybdenum oxide supercapacitor materials, and discloses a polypyrrole-phosphorus molybdenum oxide supercapacitor material and a preparation method thereof, including the following formula raw materials: phosphomolybdenum acid, 1,3,6,8- Tetrakis(4-carboxyphenyl)pyrene, cobalt nitrate hexahydrate, pyrrole, initiator. The polypyrrole-phosphorus molybdenum oxide supercapacitor material and its preparation method, the cobalt-doped phosphorus molybdenum oxide has a stable regular octahedral pyramidal structure, which improves the electrochemical stability of the phosphorus molybdenum oxide, and the cobalt-doped phosphorus molybdenum oxide The oxide has good electrical conductivity and conductivity, which promotes the transmission and migration of charges between the electrolyte and the supercapacitor, and greatly increases the double-layer capacitance and pseudocapacitance of the supercapacitor. Polypyrrole has excellent conductivity. The conductive network formed on the surface of the molybdenum oxide provides active sites, which promotes the charge transport between the molybdenum phosphorus oxide and the electrolyte, and improves the capacitance and energy density of the supercapacitor.
Owner:绍兴市梓昂新材料有限公司
Feooh/ni, a micron flower-shaped high-performance full-splitting bifunctional electrocatalyst for water 3 the s 2 preparation method
ActiveCN109794264BImprove catalytic performanceImprove the electrocatalytic performance of total water splittingElectrodesPtru catalystThiourea
The invention is a micron flower spherical high-performance full-splitting bifunctional electrocatalyst FeOOH / Ni 3 S 2 method of preparation. In this method, thiourea and nickel nitrate are used as raw materials, ethanol is used as a solution, and hexadecyltrimethylammonium bromide is used as a surfactant, and Ni is grown in situ on a foamed nickel substrate by a solvothermal method. 3 S 2 , and then by one-step electrochemical deposition on Ni 3 S 2 micron flower spherical FeOOH / Ni 3 S 2 electrocatalyst. The FeOOH / Ni that the present invention obtains 3 S 2 The composite catalyst has low overpotential and good stability, and has broad application prospects in the preparation of electrocatalytic water splitting to produce hydrogen clean energy.
Owner:HEBEI UNIV OF TECH
A method for preparing graphene/sodium manganate flexible film and a method for preparing aqueous sodium-zinc composite battery using it
ActiveCN107154496BImprove conductivityImprove electrochemical performanceCell electrodesGrapheneElectrical batteryPhysical chemistry
The invention discloses a method for preparing a graphene / sodium manganate flexible thin film and a method using the graphene / sodium manganate flexible thin film to prepare an aqueous sodium-zinc compound battery, relates to methods for preparing graphene thin films and methods using the graphene thin films to prepare compound batteries, and aims to solve the problem that an existing battery anode material is complex in preparation process, low in conductivity and unstable in electrochemical performance. The method for preparing the graphene / sodium manganate flexible thin film includes the steps of firstly, preparing Na4Mn9O18 powder; secondly, adding graphene oxide into deionized water, and performing ultrasonic treatment to obtain a solution A; thirdly, preparing a graphene oxide / sodium manganate flexible thin film; fourthly, drying the graphene oxide / sodium manganate flexible thin film to obtain the graphene / sodium manganate flexible thin film. The prepared graphene / sodium manganate flexible thin film is simple in process, has sufficient toughness, can be curled at will and can be directly cut to serve as a flexible electrode. By the methods, the graphene / sodium manganate flexible thin film and the aqueous sodium-zinc compound battery can be prepared.
Owner:ANKANG UNIV
Liquid metal negative pole piece as well as preparation method and application thereof
PendingCN114094042AIncrease the critical current densitySolve contact problemsSecondary cellsNon-aqueous electrolyte accumulator electrodesMetallic lithiumSolid state electrolyte
The invention provides a liquid metal negative pole piece as well as a preparation method and application thereof. And the surface of the negative pole piece is coated with a liquid alloy. The invention provides a liquid metal electrode of which the surface of metal lithium is coated with a liquid alloy, so the interface contact between an electrolyte and a negative electrode is improved, the critical current density of a solid electrolyte is greatly improved, pores generated by lithium removal can be filled in a circulating process, self-healing of an interface is realized, formation and growth of lithium dendrites are avoided, and the interface contact problem is effectively solved.
Owner:EVE ENERGY CO LTD
Built-in dental syringe with contact detection circuit and illuminating device
InactiveCN1103206CExact opening and closing operationDetect opening and closing operationsElectrical testingElectric light circuit arrangementControl signalDental syringe
The invention provides a contact detecting circuit which surely detects the open / close of contact of a switch, etc., to provide a load drive device and also to provide a dental syringe with a built-in illuminator and can improve its durabil ity, operability, etc. A load drive device consists of a handpiece main body and a load control circuit. The main body contains an illumination power supply and a switch which includes the conduction members. The circuit contains an oscillation circuit which generates an AC signal to be applied to the member, a signal detecting circuit which rectifies and smoothes the signal received from the member when the switch is closed, a comparator which compares the output signal of the circuit with the prescribed reference value, a control circuit, and a drive circuit which supplies the power to the power supply from a power circuit based on the control signal of the circuit.
Owner:MORITA MFG CO LTD
Silver-silver chloride paste for flexible electrocardiogram detection electrode and application of silver-silver chloride paste
ActiveCN114334218AReduce AC impedanceImprove adhesionConductive layers on insulating-supportsNon-conductive material with dispersed conductive materialElectrode potentialPhysical chemistry
The invention provides silver-silver chloride paste for a flexible electrocardiogram detection electrode and application of the silver-silver chloride paste. The silver-silver chloride paste comprises silver powder, silver chloride powder, a binder and a solvent; the mass ratio of the silver powder in the silver-silver chloride paste is 30-50%, the mass ratio of the silver chloride powder in the silver-silver chloride paste is 15-22%, and the mass ratio of the binder in the silver-silver chloride paste is 4-6.5%. By regulating and controlling the mass ratio of the raw materials in the silver-silver chloride paste for the flexible electrocardiogram detection electrode, the obtained flexible electrocardiogram detection electrode has the advantages of low alternating current impedance, good adhesive force, good electrode potential stability, high signal-to-noise ratio and the like, and can be applied to adult electrocardiogram, especially weak fetal electrocardiogram signals.
Owner:SOUTH SUZHOU MEDICAL TECH CO LTD
A cerium-doped polyaniline/activated carbon hybrid button supercapacitor
ActiveCN105513813BLarge specific surface areaImprove electrochemical activityHybrid capacitor electrodesDouble layer capacitorsMicrosphereCerium
Owner:CENT SOUTH UNIV
A kind of electroplated silver carbon fiber electrode and preparation method thereof
ActiveCN110724990BLarge specific surface areaHigh sensitivityArtificial filament heat treatmentElectrostatic field measurementsCarbon fibersFiber bundle
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)
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