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78results about How to "Good conductive path" patented technology
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Silicon-carbon composite cathode pole piece of lithium ion battery and preparation method of silicon-carbon composite cathode pole piece
InactiveCN105576185ALower impedanceImprove cycle lifeElectrode carriers/collectorsSecondary cellsCarbon compositesCarbon nanotube
The invention discloses a silicon-carbon composite cathode pole piece of a lithium ion battery. The silicon-carbon composite cathode pole piece comprises a cathode current collector, wherein one silicon-carbon cathode active material layer coats the surface of the cathode current collector; the silicon-carbon cathode active material layer is prepared from the following components by mass percent: 80%-99.5% of a silicon-carbon composite material, 0%-15% of a graphene conductive agent, 0%-15% of a carbon nano tube conductive agent, 0%-15% of a carbon black conductive agent and 0.2%-20% of a binding agent. Furthermore, the invention discloses a preparation method of the silicon-carbon composite cathode pole piece. According to the silicon-carbon composite cathode pole piece and the preparation method of the silicon-carbon composite cathode pole piece, disclosed by the invention, the silicon-carbon composite cathode pole piece can be used for effectively improving the conductive property of a silicon-based material and guaranteeing low impedance and long cycle life of the lithium ion battery applied by the cathode pole piece; the whole properties of the lithium ion battery are greatly improved, and long-time use requirements of electronic products can be met; and a market application prospect of products of battery manufacturers can be improved easily.
Owner:TIANJIN LISHEN BATTERY
Method for preparing porous carbon/nano metal oxide composite material
InactiveCN101038816AIncrease energy densityImprove power densityElectrode manufacturing processesFixed capacitor electrodesCapacitancePorous carbon
The invention relates to a method for preparing a lacunaris carbon / nanometer oxide composite material used in an ultra capacitor electrode. The prepared material is capable of evenly dispersing a nanometer oxide into a lacunaris carbon substrate. When the ultra capacitor electrode is prepared by the material, with a combination of a double-electric-layer capacitor and a metal oxide pseudocapacitance, the electrode can has a higher unit capacitor and a carbon framework can provide a favorable conductive passage for nanometer metal oxide particles dipersed in the carbon framework to reduce an equivalent internal resistance of the capacitor, thereby the capacitor has a high power and power density.
Owner:HARBIN ENG UNIV
Nano-composite material with molybdenum trioxide@molybdenum disulfide core-shell heterostructure, and preparation method and application thereof
ActiveCN108550805AAlleviate volume changesImprove cycle performanceNon-aqueous electrolyte accumulator electrodesSolventChemistry
The invention provides a nano-composite material with a molybdenum trioxide@molybdenum disulfide core-shell heterostructure, and a preparation method and an application thereof. The preparation methodcomprises the following steps: adding sodium molybdate and hydrochloric acid into redistilled water, used as a reaction solvent, in a closed high-temperature and high-pressure reactor, heating the reaction system to produce a high-temperature and high-pressure environment in order to prepare a nano-ribbon molybdenum trioxide precursor, adding the nano-ribbon molybdenum trioxide to redistilled water used as the reaction solvent, adding thiourea and hydrochloric acid, and heating the reaction system to generate high-temperature and high-pressure environment in order to prepare the three-dimensional porous sheet molybdenum oxide-molybdenum disulfide core-shell heterostructure nano-composite material. Compared with nano-composite materials in the prior art, the nano-composite material in theinvention has the advantages of high purity, good and controllable dispersibility, low production cost, good reproducibility, large specific surface area, facilitation of the infiltration of an electrode material with an electrolyte, and great potential application values in the energy storage field.
Owner:ANHUI NORMAL UNIV
Method for manufacturing lithium secondary battery
ActiveUS20130089780A1High currentGood coating performanceFinal product manufactureElectrode carriers/collectorsLithiumSlurry
A method for manufacturing a lithium secondary battery includes a first step of dispersing a conductive material in a solvent to prepare a conductive slurry; and a second step of mixing the prepared conductive slurry, a positive electrode active material and a binder to prepare a positive electrode mixture layer-forming slurry; wherein the first step is conducted so that a ratio of a particle size at 10% accumulation to a particle size at 90% accumulation, which are based on a particle size distribution measurement of the conductive material, is 10 or more and 200 or less.
Owner:TOYOTA JIDOSHA KK
Preparation method and application of nitrogen-doped carbon nanotube loaded phosphorus-doped cobaltosic oxide composite material
ActiveCN111362254ABig spaceGood conductive pathMaterial nanotechnologySecondary cellsPtru catalystLithium sulfur
The invention provides a preparation method and application of a nitrogen-doped carbon nanotube loaded phosphorus-doped cobaltosic oxide composite material, and belongs to the technical field of composite materials. The method comprises the following steps: firstly, preparing a nitrogen-doped carbon nanotube, then adding a cobalt source to obtain a Co / NCNT material, oxidizing in an oxygen atmosphere to obtain the nitrogen-doped carbon nanotube loaded cobaltosic oxide composite material, and phosphatizing in an argon atmosphere to obtain the nitrogen-doped carbon nanotube loaded phosphorus-doped cobaltosic oxide composite material. According to the scheme, on one hand, a good conductive channel is provided, on the other hand, the phosphorus-doped cobaltosic oxide not only has relatively strong adsorbability to lithium polysulfide, but also can be used as a catalyst to effectively promote the redox process of the lithium-sulfur battery, so that the adsorption-diffusion-conversion processof the lithium polysulfide is accelerated to be carried out orderly, and the overall performance of the battery is improved.
Owner:GUANGXI NORMAL UNIV
Method for improving thermoelectric properties of bismuth sulfide polycrystal
ActiveCN102443848AKeep shapeMaintain conductive propertiesPolycrystalline material growthSingle crystal growth detailsBismuth sulfideSingle crystal
The invention relates to a method for improving thermoelectric properties of bismuth sulfide polycrystal and belongs to the technical field of energy materials. The method is characterized by comprising the following steps of: mixing bismuth sulfide nano powder prepared by a mechanical alloying method with (001)-oriented monocrystal bismuth sulfide nanorod powder synthesized by a hydrothermal method, ultrasonically dispersing in absolute ethanol for 10-200 minutes, drying and then manually grinding in an agate mortar for 10-100 minutes; and placing ground powder in a graphite mold, sintering at 300-500 DEG C by adopting a spark plasma sintering process, and maintaining the temperature for 0-30 minutes to prepare a bismuth sulfide polycrystal block. Because the spark plasma sintering process has high heating rate, thus the growth and fusion of crystals are inhibited, the monocrystal nanorod structure is retained in the polycrystal block to form a fast channel for carrier migration, and the electric transmission performance and thermoelectric property of the bismuth sulfide polycrystal are greatly improved; and the method has the advantages of simplicity in required equipment, easiness in operation, low cost, significant effect and the like.
Owner:香河汇文节能科技有限公司
Stretchable strain sensor based on polyurethane fiber and preparation method of strain sensor
ActiveCN107881768ACombine tightly and evenlyImprove adhesionElectrical/magnetic solid deformation measurementGrip property fibresFiberCarbon nanotube
The invention discloses a stretchable strain sensor based on polyurethane fiber and a preparation method of the strain sensor. The polyurethane fiber is taken as a matrix, the surface of the matrix issequentially wrapped with an inner conductive structure adopting a graphene nanosheet layer and an outer conductive structure adopting a collaboratively conductive network layer of carbon black and single-walled carbon nanotubes. The strain sensor has good softness, stretching characteristic and large-scale integration characteristic and can serve as a wearable device compatible with skin.
Owner:HEFEI UNIV OF TECH
Preparation method of lithium iron phosphate cathode material and lithium iron phosphate cathode material
PendingCN105789620AGood conductive pathImprove performanceCell electrodesLithium iron phosphateCarbon nanotube
The invention discloses a preparation method of a lithium iron phosphate cathode material and the lithium iron phosphate cathode material. The preparation method comprises the steps as follows: lithium iron phosphate is prepared by a solid-phase synthesis method; the solid-phase synthesis method comprises ball-mill mixing and high-temperature calcination; acetylene is introduced into an inert atmosphere during calcination; and carbon nano tubes are formed in generated lithium iron phosphate particles and among the lithium iron phosphate particles to obtain the lithium iron phosphate cathode material with high conductivity. According to the preparation method, a chemical vapor deposition method for the carbon nano tubes is ingeniously combined with the solid-phase synthesis method of the lithium iron phosphate; the carbon nano tubes are gradually deposited on the surfaces of the lithium iron phosphate particles along with synthesis of the lithium iron phosphate during high-temperature calcination; a three-dimensional conductive path is formed in the particles and among the particles; and the conductivity of the cathode material is improved. According to the method, the lithium iron phosphate and the carbon nano tubes are crossly generated in a same reaction container, so that the process is simplified; the carbon nano tubes are evenly distributed; and the quality of the lithium iron phosphate cathode material is improved.
Owner:SHENZHEN BAK POWER BATTERY CO LTD
Water-soluble self-healing binding agent, preparation method thereof and lithium ion battery
ActiveCN110061238AImprove self-healing abilitySimple preparation processCell electrodesSecondary cellsHydrogenWater soluble
The invention provides a water-soluble self-healing binding agent, a preparation method thereof and a lithium ion battery. The water-soluble self-healing binding agent is provided with a general formula shown in specification formula (I). In the water-soluble self-healing binding agent, quadrupolar hydrogen bonds having favorable reversibility are contained in a molecule structure, can be reversely broken under external simulation such as an external force or a temperature and are generated again after the external simulation disappears, certain mechanical strength is shown, the water-solubleself-healing binding agent has favorable self-heating performance, great probability is provided for preparing a self-preparing material, the water-soluble self-healing binding agent can be used as abinding agent of a silicon or silicon carbon negative electrode of the lithium ion battery, so that the prepared lithium ion battery has favorable electrochemical performance.
Owner:SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
Composite foam film and preparation method thereof
PendingCN110358136ALarge apertureGood conductive pathMagnetic/electric field screeningFreeze-dryingNanoparticles dispersion
The invention discloses a composite foam film and a preparation method thereof. Nano-particles are used as a filler, a polymer is used as a base material, the nano-particles are dispersed in a solution of the polymer, and then curing film formation and freeze-drying treatments are carried out to prepare the nano-particle / polymer composite foam film with a light, soft and porous structure and an electromagnetic shielding property. The addition of the nanoparticles increases the pore size of the composite foam film, improves the conductive pathway of the composite foam film and significantly improve the electrical conductivity and the electromagnetic shielding property of the composite foam. The composite foam film prepared in the invention has a great application scenario in the field of electromagnetic shielding.
Owner:WUHAN TEXTILE UNIV
Non-Aqueous Electrolyte Battery
ActiveUS20080286655A1Reduce energy densityIncrease capacityElectrode carriers/collectorsSecondary cells charging/dischargingLithium iron phosphateSurface roughness
A non-aqueous battery with improved volume energy density and enhanced load characteristics is made available even when using olivine-type lithium phosphate as a positive electrode active material.The non-aqueous electrolyte battery of the present invention is provided with a positive electrode (1) containing lithium iron phosphate as a positive electrode active material, a negative electrode (2), and a non-aqueous electrolyte (4). In the positive electrode (1), a positive electrode active material-containing layer that is made of the positive electrode active material, a conductive agent, and a binder agent is formed on a positive electrode current collector. The positive electrode current collector has a thickness of less than 20 μm and its surface that is in contact with the positive electrode active material-containing layer has a mean surface roughness Ra of greater than 0.026.
Owner:SANYO ELECTRIC CO LTD
Recycled composite material
InactiveUS20090226712A1Easy to prepareGood dispersionMaterial nanotechnologyLayered productsFiberCarbon fibers
An recycled composite material is disclosed, which is prepared by using as a raw material a waste composite material which comprises a matrix component and carbon fibrous structures added to the matrix, and adding an additional matrix component which is homogeneous and / or heterogeneous with the matrix of the spent composite material, and then kneading them together; wherein the carbon fibrous structure comprises a three dimensional network of carbon fibers, each carbon fiber having an outside diameter of 15-100 nm, and a granular part, at which the fibers are bound in a state that the carbon fibers extend outwardly therefrom, and wherein the granular part is produced in a growth process of the carbon fibers. The recycled composite material performs much the same with the original composite material, and is produced briefly at a low cost.
Owner:MITSUI & CO LTD
Cobweb-shaped flexible strain sensor capable of identifying strain direction and preparation method thereof
ActiveCN111649665AImprove conductivitySmall hysteresisFibre typesElectrical/magnetic solid deformation measurementPolymer scienceAdhesive
The invention discloses a cobweb-shaped flexible strain sensor capable of identifying a strain direction and a preparation method. The method comprises the following steps of mixing a conductive filler, a hot-melt adhesive and an N, N-dimethylformamide solvent, and carrying out ultrasonic dispersion to obtain a dispersion liquid, putting the granular thermoplastic polymer into a screw extruder, and extruding a pure thermoplastic polymer wire, drawing the wire material to pass through the dispersion liquid at a constant speed by utilizing a wire winding roller traction device, forming a uniformand thin conductive layer on the surface of the wire material, and printing the wire material into a cobweb-shaped array by utilizing a 3D printer after the wire material is completely dried, and fixing the wire at the center of the cobweb and the tail end of the longitudinal wire by using conductive silver adhesive to prepare the cobweb-shaped flexible strain sensor. The cobweb-shaped customizedstructure is rapidly prepared, and the sensor also has the function of identifying the strain direction, has the advantages of high linearity, high sensitivity, wide strain range, rapid response, lowhysteresis, good stability and the like, and has great potential in the application of wearable equipment.
Owner:SOUTHWEST PETROLEUM UNIV
Fibrous carbon nanohorn aggregate and method for producing the same
ActiveUS20180105425A1Good conductive pathResistance loss be relatively lowMaterial nanotechnologyHybrid capacitor electrodesNanometreCarbon Nanohorn
Objects of the present invention is to provide a carbon nanohorn aggregate excellent in imparting conductivity, and to provide a carbon nanohorn aggregate excellent in both the impartation of conductivity and the dispersibility. The present invention provides a fibrous carbon nanohorn aggregate in which a plurality of single-walled carbon nanohorns are aggregated in a fibrous state. The fibrous carbon nanohorn aggregate is excellent in imparting conductivity, and can be produced by the same process as production of globular carbon nanohorn aggregates, whereby the carbon nanohorn aggregates containing fibrous ones and globular ones mixed therewith can satisfy both high conductivity and high dispersibility.
Owner:NEC CORP
Method for preparing lithium ion battery silicon-carbon anode material by using carbon nanotube
ActiveCN109830668ASolve the multiplierSolve circularity problemsCell electrodesSecondary cellsLithiumFreeze-drying
The invention discloses a method for preparing a lithium ion battery silicon-carbon anode material by using a carbon nanotube. The method of the invention comprises dispersing and fixing the carbon nanotube and carbonizing a precursor. The method shortens and disperses the carbon nanotube by high-speed emulsification shearing. A dispersing agent keeps the carbon nanotube in a highly dispersed state, thereby solving the problem that the carbon nanotube is difficult to disperse and easy to agglomerate. By freeze drying, an organic carbon source fixes the highly dispersed carbon nanotube / nanosilicon. The carbon nanotube / nanosilicon is coated with carbon after the carbonization by the organic carbon source so as to achieve a purpose of efficiently preparing the lithium ion electronic silicon-carbon anode material from the carbon nanotube. The method of the invention is environmentally friendly and reproducible, is simple and easy, and low in equipment requirement and low in energy consumption, and can achieve large-scale production.
Owner:KUNMING UNIV OF SCI & TECH
Paper-based supercapacitor electrode material preparation method
ActiveCN108063060AHigh specific capacitySuppresses the antiparticle extraction effectHybrid capacitor electrodesHybrid/EDL manufactureIn situ polymerizationElectrical resistivity and conductivity
The invention provides a paper-based supercapacitor electrode material preparation method, which belongs to the technical field of new energy materials. Paper becomes an important electrode material substrate due to own characteristics and is widely applied to various flexible energy storage devices. A screen printing method is used to print colloidal graphite on the paper, the paper is then immersed in a carbonate solution and a nitrate solution in sequence, an electrochemical method is adopted for processing, and the colloidal graphite forms a partially-stripped flake structure. Polypyrroleis then deposited by in-situ polymerization, and finally, through naphthalene sulfonic acid doping, a paper-based supercapacitor electrode material with a thickness of 0.15 millimeter is obtained. Thepreparation method has the advantages of simple process, low device requirements and industrial production, and when the paper-based supercapacitor electrode material is applied to the supercapacitor, the specific capacity is high, the stability is good, the conductivity is high, and industrial production of a high-performance supercapacitor is facilitated.
Owner:WUHAN TEXTILE UNIV
High-temperature sintering type yellow light conductive paste and preparation method thereof, conductive circuit and preparation method thereof
ActiveCN110335700AHigh resistivityImprove adhesionApparatus for heat treatmentNon-conductive material with dispersed conductive materialConductive pasteMelting temperature
The invention particularly relates to a high-temperature sintering type yellow light conductive paste and a preparation method thereof, a conductive circuit and a preparation method thereof. The high-temperature sintering type yellow light conductive paste comprises in percentage by weight: 75-90% of noble metal powder; 1%-5% of glass powder; and 8%-25% of photosensitive organic carrier, wherein the glass phase transition temperature Tg of the glass powder is 400-500 DEG C, and the melting temperature Tf is 500-600 DEG C. The noble metal powder is matched with the glass powder and the photosensitive organic carrier, so that the conductive paste is suitable for the high-temperature sintering; and the obtained conductive paste can achieve superfine wire diameter resolution, and has good resistivity and adhesive force after sintering. Glass powder with a proper glass phase transition temperature and a melting temperature is added to provide proper adhesive force for the metal conducting layer and the base material, and the optimized noble metal powder and the glass powder ensure that the sintered circuit does not have a shrinkage cavity and breakage and can reduce the resistivity; andmoreover, the photosensitive organic carrier with a proper monomer and an initiator in proper type and proportion has high resolution and a superfine line diameter after being developed.
Owner:乾宇微纳技术(深圳)有限公司 +1
High-stretchable flexible strain sensor based on two-component polyurethane line and preparation method of sensor
ActiveCN110863352AImprove adhesionCombine tightly and evenlyFibre typesElectrical/magnetic solid deformation measurementPolymer scienceGraphite
The invention discloses a high-stretchable flexible strain sensor based on a two-component polyurethane line. The two-component polyurethane line serves as a base, the surface of the base is coated with an internal conducting layer (short hydroxyl carbon nanotube layer) after KH-550 modification, and the surface of the internal conducting layer is coated with an external conducting layer (hydroxylated graphene nanosheet / silver / silicon rubber cooperative conducting network layer) after KH-550 modification. The strain sensor has the advantages of high stretchability, high stability, high durability, rapid response characteristic and the like and can be used for electronic skin monitoring of human joint movement and gait detection.
Owner:HEFEI UNIV OF TECH
Novel graphene-based total-soil metal lithium battery and working method thereof
ActiveCN108321391ALower internal resistanceEasy transferPhosphatesElectrode carriers/collectorsElectrical batteryNew energy
The invention discloses a novel graphene-based total-soil metal lithium battery. The novel graphene-based total-soil metal lithium battery comprises a positive electrode, a negative electrode, solid electrolyte, a diaphragm and a battery shell. In the battery, a positive current collector adopts a LiFePO4-graphene based compound; a negative current collector adopts metal lithium; the diaphragm adopts polypropylene; the solid electrolyte adopts a V2S5-graphene based composite material; the middle of the positive electrode and the solid electrolyte is coated with one layer of the diaphragm; themiddle of the negative electrode and the solid electrolyte is coated with one layer of the diaphragm; the diaphragms are arranged in parallel and are accommodated in the battery shell; the battery isformed by stacking the positive electrode, the negative electrode, the diaphragms and the solid electrolyte in an inserting bag mode; and convex parts on substrates of the positive electrode and the negative electrode are connected with leads to form conductive lugs. The graphene total-soil metal lithium battery reduces the internal resistance of the battery, has excellent electronic conductivity,lithium ion conversation rate and metal lithium rechargeability, improves electrode solid / solid interface contact stability, has high energy density and high safety, and is suitable for a power battery of a new energy automobile.
Owner:ANHUI ANKAI AUTOMOBILE
Conductive aggregate preparation method and application thereof
ActiveCN114455874AImprove adsorption strengthImprove adsorption qualityAggregate (composite)Carbon based nanomaterials
The invention discloses a preparation method and application of conductive aggregate, relates to the technical field of intelligent cement-based composite materials, and aims to solve the problems that direct introduction of a carbon-based nano material is difficult to disperse in a cement matrix, and the developed intelligent cement-based composite material is usually at the cost of sacrificing working performance and mechanical performance. The method comprises the following steps: grafting calcium ions to the surface of the fine aggregate, and then continuously mixing the fine aggregate with a graphene oxide solution under a heating condition to obtain the fine aggregate with the surface coated with graphene oxide; and carrying out high-temperature reduction treatment and microwave reduction treatment on the graphene oxide, and reducing the graphene oxide into graphene in situ to obtain the graphene-coated aggregate. And finally, mixing the conductive graphene aggregate, cement and water to form a stable conductive aggregate structure in the cement-based composite material. According to the prepared conductive cement-based composite material, the technical barrier that mechanical properties and electrical properties cannot be obtained at the same time is overcome under the condition that nano materials with extremely low doping amount are used. The method is applied to the field of conductive cement-based materials.
Owner:HARBIN INST OF TECH
Electrical connectivity for circuit applications
ActiveUS8581343B1Firmly connectedLow resistivityTransistorSemiconductor/solid-state device detailsSemiconductor chip
According to example configurations herein, a leadframe includes a first conductive strip, a second conductive strip, and a third conductive strip disposed substantially adjacent and substantially parallel to each other. A semiconductor chip substrate includes a first array of switch circuits disposed adjacent and parallel to a second array of switch circuits. Source nodes in switch circuits of the first array are disposed substantially adjacent and substantially parallel to source nodes in switch circuits of the second array. When the semiconductor chip and the leadframe device are combined to form a circuit package, a connectivity interface between the semiconductor chip and conductive strips in the circuit package couples each of the source nodes in switch circuits of the first array and each of the multiple source nodes in switch circuits of the second array to a common conductive strip in the leadframe device.
Owner:INFINEON TECH AMERICAS CORP
Multifunctional graphene foam and preparation method thereof
PendingCN114014310ASingle structureGood performance and stabilityGrapheneGraphene foamElectrically conductive
The invention relates to the technical field of graphene, in particular to multifunctional graphene foam and a preparation method thereof. The preparation method comprises the following steps that a graphene film is soaked in a reaction solution, external force is applied to assist the reaction solution to keep the reaction solution in a flowing state, and after a reduction reaction is conducted for a certain time, microwave drying treatment and heat treatment are sequentially conducted, so that the multifunctional graphene foam is obtained. According to the preparation method provided by the invention, a mode of soaking in a reaction solution to generate gas is adopted, so that a foam product with larger thickness and an intact structure can be obtained. The foam has a porous and fluffy microstructure, and layers are crosslinked together to form a network shape, so that the structural stability of a foam product can be ensured, a very good heat-conducting and electric-conducting channel is provided, and the foam has excellent heat-conducting and electric-conducting functions and the like.
Owner:广东墨睿科技有限公司
Fibrous carbon nanohorn aggregate and method for producing the same
ActiveUS10793439B2Low resistance loss in charge and dischargeGood conductive pathMaterial nanotechnologyHybrid capacitor electrodesOrganic chemistryHigh conductivity
Owner:NEC CORP
Dual-safety device with ground wire connection
PendingCN108336710APrevent loose threadAvoid damageArrangements for earthing wires/cablesPower gridEngineering
The invention provides a dual-safety device with ground wire connection. The dual-safety device is characterized in that two parallel strain shunt bars are installed at a ground wire between an overhead ground wire suspension clamp or strain clamp and a damper. The first segments of the strain shunt bars are sheet type pre-twisted wiring harnesses twisted on the ground wire, wherein the twisting directions of the pre-twisted wiring harnesses are identical with the twisting direction of the wire strand of the ground wire; and the second segments of the strain shunt bars are cylindrical wiring harnesses and bifurcates and extends from the ground wire at the suspension clamp or strain clamp side, and wiring terminals are compressed at the tail ends and the tail ends are connected to towers bybolts. According to the invention, fusing of a lightning conductor by lightning currents and ground short-circuit currents; a phenomenon that the armour clamp is burned and broken by continuous low discharging because of poor contact can be avoided; and accident occurrence caused by ground wire falling under the condition of armour clamp string or ground wire breaking is avoided. The dual-safetydevice can be installed in an electrified manner; erecting of a crossing rack is avoided; the grid line breaking risk is reduced quickly; and the operation and maintenance costs are lowered substantially.
Owner:SHENZHEN DAILU TECH CO LTD
Power transistor
PendingCN113451402AUniform temperature distributionImprove job stabilitySemiconductor devicesEngineeringMaterials science
The invention relates to a power transistor, and the transistor at least comprises a substrate, a buffer layer and a barrier layer; a gate electrode, a source electrode and a drain electrode which are located above the barrier layer; wherein one or more insulated isolation structures are arranged in a conducting channel below the gate electrode and between the source electrode and the drain electrode. The invention also relates to electronic equipment comprising the power transistor.
Owner:顶诺微电子(北京)有限公司
Graphene anticorrosive coating and preparation method thereof
InactiveCN111826071AImprove corrosion resistanceReduce porosityAnti-corrosive paintsPolyurea/polyurethane coatingsFirming agentGraphite
The invention discloses a graphene anticorrosive coating, which is prepared from the following components in percentage by mass: 40 to 60 percent of polyurethane, 0.1 to 0.5 percent of graphene powder, 1 to 3 percent of aniline, 10 to 20 percent of zinc powder, 5 to 10 percent of a filler, 0.5 to 2 percent of a dispersing agent, 5 to 10 percent of a curing agent, 0.5 to 2 percent of a leveling agent, 0.5 to 2 percent of a defoamer and 10 to 20 percent of deionized water, wherein the zinc powder is flake zinc powder, the particle size of the zinc powder is 300-500 meshes, and the particle sizeof the graphene powder is 300 meshes. The invention also discloses a preparation method of the graphene anticorrosive coating. By adopting the graphene anticorrosive coating and the preparation methodthereof, the problem of poor anticorrosive effect of an existing anticorrosive coating can be solved.
Owner:SHAANXI BANGXI CHEM
Preparation method and application of a high energy density lithium-sulfur battery electrode
ActiveCN104766943BFlexibleReduce usageElectrode manufacturing processesElectrode carriers/collectorsCarbon fibersHigh energy
The invention relates to the field of lithium sulfur batteries for electrochemical energy storage and in particular relates to a preparation method and application of a high-energy density lithium sulfur battery electrode. The preparation method comprises the following steps: preparing a three-dimensional conductive carbon fiber network; mixing carbon nano tubes, conductive carbon black and elemental sulfur to form uniform elemental sulfur slurry, by taking the three-dimensional conductive carbon fiber network as a current collector, directly immersing the three-dimensional conductive carbon fiber network in the elemental sulfur slurry, injecting the elemental sulfur slurry for drying, forming a carbon / sulfur composite lithium sulfur battery electrode through which sulfur is uniformly distributed in the three-dimensional conductive carbon fiber network, and further assembling the battery to prepare the high-energy density lithium sulfur battery. By utilizing the three-dimensional flexible high-conductivity carbon fiber network and highly dispersed elemental sulfur slurry in the electrode preparation process, a positive electrode material with high sulfur loading capacity is obtained, so that extremely high specific capacity and excellent cycle performance are achieved under the condition that the lithium sulfur battery is high in sulfur loading capacity in unit area.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Conductive silver adhesive, and preparation method and application thereof
ActiveCN110423573AFix connection problemsSimple recipePolyureas/polyurethane adhesivesNon-conductive material with dispersed conductive materialOrganic solventFlexible circuits
The invention provides a conductive silver adhesive, and a preparation method and application thereof. The conductive silver adhesive comprises a silver nanosheet and a low-modulus high-molecular polymer carrier, wherein the low-modulus high-molecular polymer carrier comprises a low-modulus high-molecular polymer and an organic solvent, and the elastic modulus of the low-modulus high-molecular polymer is smaller than 100 MPa; the organic solvent accounts for 60-80% of the total weight of the high-molecular polymer carrier; and in terms of the gross weight of the silver nanosheet and the low-modulus high-molecular polymer, the silver nanosheet accounts for 70-90%, and the low-modulus high-molecular polymer accounts for 10-30%. According to the invention, the low-modulus high-molecular polymer is used as a binder for the conductive silver adhesive, and is adapted to the modulus of a flexible circuit, and polymers with different moduli can satisfy demands of flexible circuits with different moduli; and under the condition of large strain, the two-dimensional silver nanosheet in the conductive silver adhesive can still maintain a good conductive path, so the conductive silver adhesivehas high tensile properties and electrical conductivity.
Owner:零感科技(深圳)有限公司
Method for improving thermoelectric properties of bismuth sulfide polycrystal
ActiveCN102443848BKeep shapeImprove electrical transmission performancePolycrystalline material growthSingle crystal growth detailsBismuth sulfideSulfidation
Owner:香河汇文节能科技有限公司
Bacteriostatic carpet fabric and preparation method thereof
ActiveCN112760988AImprove conductivitySoft touchPhysical treatmentBiochemical treatment with enzymes/microorganismsElectrolytic agentFreeze-drying
The invention discloses a bacteriostatic carpet fabric and a preparation method thereof, and relates to the technical field of textile materials. The preparation method comprises the following steps of performing enzymolysis on a carpet fabric to prepare a pretreated carpet fabric; then performing a mixing reaction on nanosheet layer zinc oxide and a dopamine aqueous solution to prepare pretreated zinc oxide; etching the pretreated zinc oxide with a sodium methyl silicate solution to prepare modified zinc oxide; mixing the modified zinc oxide and the pretreated carpet fabric, and performing freeze drying to prepare a bacteriostatic carpet fabric blank; and finally, taking the bacteriostatic carpet fabric blank as a negative electrode and a platinum sheet as a positive electrode, carrying out electrodeposition in a mixed electrolyte solution, and performing filtering and drying to obtain the bacteriostatic carpet fabric. The bacteriostatic carpet fabric prepared by the method has the long-acting bacteriostatic activity, and is relatively good in wear resistance and good in hand feeling.
Owner:LAIWU RUIDAO NONWOVENS CO LTD
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