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Compound enzyme for efficiently converting high-purity rare ginsenoside CK as well as preparation method and application of compound enzyme
ActiveCN119120431Aincrease vitalityImprove the efficiency of conversion into ginsenoside CKHydrolasesTransferasesGinsenoside CKAlglucerase
The invention relates to a compound enzyme for efficiently converting high-purity rare ginsenoside CK as well as a preparation method and application of the compound enzyme, and belongs to the technical field of microorganisms. The compound enzyme disclosed by the invention comprises beta-glucosidase, fructosyl transferase, lactase, cellulase and beta-glucanase. The beta-glucosidase, the fructosyl transferase, the lactase, the cellulase and the beta-glucanase are selected and matched to obtain the compound enzyme, the ginsenoside CK can be prepared in an enzyme engineering process, and the compound enzyme has the effect of improving the conversion rate of converting the ginsenoside Rb1 into the ginsenoside CK through synergistic interaction.
Owner:GUANGZHOU FANZHIRONG COSMETICS CO LTD +1
Non-equimolar-ratio high-entropy thermoelectric ceramic and preparation method thereof
ActiveCN119528564Aevenly distributedNo agglomerationEnergy inputThermoelectric materialsPerovskite (structure)
The invention relates to a non-equimolar-ratio high-entropy thermoelectric ceramic and a preparation method thereof. The chemical formula of the non-equimolar-ratio high-entropy thermoelectric ceramic is (Ca1 / 3Sr1 / 3Ba1 / 3) 1-xLaxTiO3 (x = 0.1-0.4). Through presintering, spark plasma sintering and reduction annealing processes, a single-phase perovskite structure composed of phases of the A-site high-entropy perovskite thermoelectric ceramic is obtained, equiaxed crystal grains are arranged in the ceramic, and the morphology of the equiaxed crystal grains is matched with that of cubic perovskite structure crystal grains. Elements Ca, Sr, Ba, La, Ti and O in the ceramic are uniformly distributed in the ceramic, and no agglomeration phenomenon exists. The A-bit non-equimolar-ratio high-entropy perovskite thermoelectric ceramic (Ca1 / 3Sr1 / 3Ba1 / 3) 1-xLaxTiO3 obtained by the invention has low thermal conductivity, high conductivity and Seebeck coefficient, further shows a high thermoelectric ZT figure of merit, is simple to operate and short in time period, and provides an effective path for preparing high-temperature thermoelectric materials.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Ribosomal protein PpRPL12 in Chinese pears and application of ribosomal protein PpRPL12 in improving disease resistance of plants
ActiveCN119462877Areduce conductivityincrease the areaPlant peptidesFermentationBiotechnologyPyrus betulaefolia
The invention discloses ribosomal protein PpRPL12 in Chinese pears and application of the ribosomal protein PpRPL12 in improving the disease resistance of plants. The ribosomal protein PpRPL12 with a positive effect on resisting pear black spot is screened from the Chinese pears. According to the invention, an overexpression vector and a virus silencing vector constructed by adopting the coding gene of the ribosomal protein PpRPL12 are used for verifying the pear black spot resistance function of the plant, and the result shows that the pear black spot resistance of the eggplant pear callus and the positive arabidopsis thaliana plant with the coding gene is obviously higher than that of the wild callus and the wild arabidopsis thaliana plant. After the ribosomal protein gene PpRPL12 in the pyrus betulaefolia seedling is silenced, it is found that the pear black spot resistance of the wild pyrus betulaefolia seedling is superior to that of the silenced pyrus betulaefolia seedling. It is proved that the ribosomal protein PpRPL12 and the coding gene thereof have important application value in the research of improving the pear black spot resistance of plants.
Owner:SANYA INSTITUTE OF NANJING AGRICULTURAL UNIVERSITY
Spinel-phase Li4Mn5O12-coated high-nickel positive electrode material as well as preparation method and application thereof
InactiveCN119447241Aprevent precipitationavoid breakingCell electrodesSecondary cellsElectrical batteryNanoparticle
The invention belongs to the technical field of lithium ion battery positive electrode materials, and particularly relates to a spinel phase Li4Mn5O12 coated high-nickel positive electrode material as well as a preparation method and application thereof. A substrate of the material is a high-nickel positive electrode material, a coating layer is arranged on the surface of the substrate, and the coating layer is spinel-phase Li4Mn5O12 nanoparticles; the spinel phase Li < 4 > Mn < 5 > O < 12 > accounts for 1%-3% of the high-nickel positive electrode material by mass; the chemical general formula of the high-nickel positive electrode material is LiNi < 1-x-y > Co < x > Mn < y > O < 2 >, wherein (1-x-y) < lt > is greater than or equal to 0.8; 1, 0lt; xlt; 0, 0, 0, 0; yt; Yt; and 0.2 part. The spinel with relatively high lattice matching degree with the high-nickel positive electrode material can avoid a coating layer fracture phenomenon caused by volume expansion of the coating layer; a spinel three-dimensional lithium ion diffusion channel is adopted, so that the de-intercalation rate of lithium ions is increased, and the rate capability of the high-nickel positive electrode material is enhanced.
Owner:SHAANXI UNIV OF SCI & TECH
Tail gas treatment liquid circulating filtration device
ActiveCN222434294UEasy to assemble and disassembleImprove filtering effectWater contaminantsDispersed particle separationFiltrationStructural engineering
The utility model discloses a tail gas treating fluid circulating filtering device which comprises a base, a filtering tank is fixedly arranged on one side of the upper end of the base, a tank cover is arranged at the upper end of the filtering tank, the tank cover is connected with the filtering tank through a buckle, a liquid inlet pipe is fixedly arranged at the upper end of the tank cover, and the liquid inlet pipe is communicated with the filtering tank; the fixed seat is arranged at the lower end of the tank cover and fixedly connected with the tank cover, a fixed groove is formed in the middle of the interior of the fixed seat, a filter cartridge is arranged in the fixed groove and extends to the position below the fixed seat, and limiting blocks are fixedly arranged above the two sides of the exterior of the filter cartridge correspondingly; the limiting block extends into the fixing groove; the inserting grooves are formed in the front end and the rear end of the interior of the fixing base, the upper ends of the inserting grooves communicate with the fixing groove, and the problems that a filter screen is prone to being blocked when treating fluid is filtered at a time, and sediment generated when the treating fluid is not used for a long time is difficult to treat are solved through the structure.
Owner:HENAN XINLIANXIN BLUE ENVIRONMENTAL PROTECTION TECH CO LTD
Positive electrode for lithium secondary battery and lithium secondary battery comprising same
PendingCN119208521Areduce conductivityreduce adhesionPositive electrodesLi-accumulatorsLamellar crystalsElectrical battery
The present invention relates to a positive electrode for a lithium secondary battery and a lithium secondary battery comprising the same, and provides a positive electrode comprising: a current collector; a first positive electrode mixture layer formed on at least one surface of the current collector; and a second positive electrode mixture layer formed on the first positive electrode mixture layer, in which the first positive electrode mixture layer includes a first positive electrode active material having a layered crystal structure, and the second positive electrode mixture layer includes a second positive electrode active material having an olivine-based crystal structure, the first positive electrode mixture layer and the second positive electrode mixture layer have a thickness ratio of 1: 9 to 4: 6.
Owner:SK ON CO LTD
Pressure sensor and pressure interface thereof
PendingCN121994400ASolve the dielectric strengthno risk of leakageFluid pressure measurement using ohmic-resistance variationCeramic membraneStrain gauge
A pressure sensor and a pressure interface are disclosed. The pressure sensor comprises: a pressure interface, wherein the pressure interface comprises a cylindrical ceramic base and a ceramic diaphragm arranged at one end part of the ceramic base; the ceramic diaphragm is connected with the ceramic base, the strain gauge is connected with the ceramic diaphragm, and the ceramic base and the ceramic diaphragm are integrally manufactured. As the pressure sensor adopts the ceramic base and the ceramic diaphragm which are integrated, additional assembly and sealing are not needed, the risk of leakage is avoided, and the cost is low at the same time. Moreover, the pressure sensor is made of a ceramic material which is in contact with the pressure medium, so that the pressure sensor can be applied to corrosive pressure media and the like.
Owner:MEASUREMENT SPECIALTIES CHINA
Sulfide composite electrolyte and preparation method and application thereof
ActiveCN119650822AReduce self-discharge effectlow electronic conductivitySecondary cellsComposite electrolyteElectrical battery
The invention discloses a sulfide composite electrolyte as well as a preparation method and application thereof, and relates to the technical field of solid-state batteries, an organic coating agent and an organic solvent are mixed, oxide nanoparticles are dispersed in the mixture, a precipitate is extracted and dried to obtain an oxide-organic coating agent composite material, then the oxide-organic coating agent composite material is subjected to ball milling treatment in the sulfide electrolyte, and the sulfide composite electrolyte is obtained. The sulfide composite electrolyte solves the problems of lithium dendrites and self discharge existing in a sulfide all-solid-state battery, the prepared sulfide composite electrolyte can smoothly transmit lithium ions, meanwhile, electron transfer between sulfide electrolyte interfaces is blocked, the electron conductivity is reduced, and the service life of the sulfide all-solid-state battery is prolonged. The growth of lithium dendrites along gaps of sulfide electrolyte is favorably inhibited, and the problem of lithium dendrites in a solid-state battery can be reduced. The preparation method provided by the invention is simple in process, low in equipment requirement and easy to amplify.
Owner:SHANGHAI FIRM LITHIUM NEW ENERGY TECH CO LTD +1
Oxygen-vacancy-enriched Bi5O7I microsphere piezoelectric-photocatalyst and preparation method thereof
ActiveCN119186606Aeasy to operateCalcination temperature is lowPhysical/chemical process catalystsWater/sewage treatment by irradiationPtru catalystOrganic dye
The invention provides an oxygen-vacancy-rich Bi5O7I microsphere piezoelectric-photocatalyst and a preparation method thereof, and belongs to the technical field of light pressure concerted catalysis, and the preparation method comprises the following steps: mixing Bi (NO3) 35H2O and PEG 6000 powder, dissolving in absolute ethyl alcohol, uniformly stirring, dropwise adding a NaI solution, uniformly stirring again, sequentially washing and drying to obtain a dried product, and calcining the dried product to obtain the oxygen-vacancy-rich Bi5O7I microsphere piezoelectric-photocatalyst. The Bi5O7I microsphere piezoelectric-photocatalyst rich in oxygen vacancy is obtained; according to the invention, richer oxygen vacancies are introduced into the Bi5O7I powder, the spectral absorption range of the piezoelectric-photocatalyst is expanded, and the concentration of current carriers is improved by utilizing the capturing effect of the oxygen vacancies on electrons, so that the photocatalytic, piezoelectric catalytic and light-pressure synergistic catalytic efficiency of the piezoelectric-photocatalyst is improved; the oxygen-vacancy-enriched Bi5O7I microsphere piezoelectric-photocatalyst prepared by the preparation method disclosed by the invention has efficient organic dye degradation performance, and the catalytic effect of the oxygen-vacancy-enriched Bi5O7I microsphere piezoelectric-photocatalyst is far superior to that of pure-phase Bi5O7I powder.
Owner:SHAANXI UNIV OF SCI & TECH
Noise reduction structure of wind turbine generator
PendingCN119288757Apromote absorptionGuaranteed cooling effectWind motor controlMachines/enginesNacelleCooling effect
The invention relates to the technical field of wind power generation, and discloses a noise reduction structure of a wind turbine generator, comprising: a cabin, a cabin wall of which is provided with a cabin air outlet; the generator is arranged in the cabin, a shell of the generator is provided with a generator air outlet, the generator air outlet is suitable for leading out hot air in the generator, and the hot air led out from the generator air outlet flows in the first direction; the silencer is fixedly arranged relative to the generator, the silencer comprises a shell and a plurality of silencing pieces arranged in the shell, the shell is provided with a first air inlet port and a first air outlet port which are oppositely arranged, the first air inlet port is arranged towards the air outlet of the generator, and the first air outlet port is arranged towards the air outlet of the cabin; the projection of the first air inlet port on the plane where the first air outlet port is located partially coincides with the first air outlet port, the silencing pieces extend in the second direction and are distributed at intervals, and the second direction is parallel to the first direction. Noise reduction effect is good, and generator cooling effect is prevented from being affected.
Owner:BEIJING SANY SMART ELECTRICAL MASCH CO LTD
Lithium ion battery electrolyte and application thereof
This invention proposes a lithium-ion battery electrolyte and its application. The electrolyte comprises at least the following components: a fluorinated solvent, including 2,2-difluoroethyl acetate, fluoroethylene carbonate, and 2,2-difluoroethyl ethyl carbonate; a lithium salt, including a first lithium salt comprising lithium hexafluorophosphate; and an additive, including a first additive comprising lithium difluorobis(oxalato)phosphate. The lithium-ion battery electrolyte and its application proposed in this invention can improve the electrolyte's high-voltage resistance and kinetic performance, reduce battery impedance, and enhance the battery's fast-charging performance and high-temperature cycle stability.
Owner:ENVISION DYNAMICS TECH (JIANGSU) CO LTD +1
A solvent-free polyurethane adhesive for electrical appliances and preparation method thereof
ActiveCN118406461BImprove compactnessImprove heat resistanceNon-macromolecular adhesive additivesPolyureas/polyurethane adhesivesPolyesterAdhesive cement
The present invention relates to a solvent-free polyurethane adhesive for electrical appliances and a preparation method thereof, and belongs to the technical field of adhesives. In the present invention, butyl hydroxyl rubber, dimer acid polyester polyol, hexamethylene diisocyanate, and isophorone diamine are selected as basic raw materials for reaction, hydroxyl PS microspheres are added as a part of the hard segment to provide a certain amount of heat capacity, and DOPO-HQ containing benzene rings and phenanthrene rings is introduced, so that the adhesive product obtained has excellent heat resistance. In addition, the present invention also performs surface modification on silicon dioxide, magnesium oxide, and mica powder with good insulating properties, and the modified three inorganic particles are compounded and added to the system as insulating fillers, so as to achieve a close compound between the insulating filler and the polymer. Since there are many defects and unsaturated bonds on the surface of the insulating filler, the carriers can be captured, thereby reducing its concentration, and then reducing the conductivity. Therefore, the obtained adhesive product can have outstanding insulating properties.
Owner:GUANGDONG SINO-ADHESIVE NEW MATERIAL TECH CO LTD
Management method, system and storage medium of motor vehicle control system
ActiveCN118833111BHigh insulation resistanceensure safetyBattery/fuel cell control arrangementLow speedFuel cells
The embodiment of the present application provides a management method, system and storage medium for a motor vehicle control system, which relates to the field of fuel cell technology. The method includes disconnecting the battery stack from the high-voltage circuit; starting the high-pressure water pump at the lowest speed and controlling the coolant flow to the heater to be a first preset value; obtaining the cumulative running time of the high-pressure water pump and judging whether the cumulative running time meets the preset first condition; when it is determined that the cumulative running time meets the first condition and the conductivity in the heat dissipation loop is greater than or equal to the high-voltage starting conductivity threshold value, controlling the increase or decrease of the speed of the high-pressure water pump and returning to the step of obtaining the cumulative running time until the cumulative running time is greater than or equal to the first time or the conductivity is less than the high-voltage starting threshold; turning off the high-pressure water pump, and connecting the battery stack and the high-voltage circuit; judging whether to provide high voltage electricity to the high-voltage circuit through the battery stack according to the insulation resistance of the high-voltage circuit. The embodiment of the present application can solve the problem of the inability to start the motor vehicle due to long-term non-starting.
Owner:SHENZHEN HYDROGEN BLUE TIMES POWER TECH CO LTD
Conductive terminal
PendingCN119481762Areduce gapIncrease diversion areaSecuring/insulating coupling contact membersCoupling contact membersStructural engineeringMechanical engineering
Owner:AMPHENOL PCD SHENZHEN
Current collector and battery
PendingCN121938913Areduce conductivitylow thermal conductivityElectrode carriers/collectorsLi-accumulatorsElectrical batteryElectro conductivity
The invention provides a current collector and a battery, which can reduce the weight of the current collector and the battery provided with the current collector while inhibiting the reduction of the conductivity of the current collector, and can inhibit the reduction of the thermal conductivity of the current collector. A current collector (100A) is provided with a support layer (110) and a conductive layer (120). The support layer (110) is configured from a resin composition having electrical insulating properties. The conductive layer (120) is laminated on the support layer (110). The conductive layer (120) is made of an alloy containing elemental magnesium, elemental aluminum, and elemental calcium.
Owner:TOYOTA JIDOSHA KK
Pulsating electrochemical machining device and method with non-contact low-temperature intercalary heat exchange
PendingCN122274327Aavoid direct contactEnsure flow field stabilityElectrolytic agentPulse power supply
This invention relates to a non-contact, low-temperature, intermittent heat exchange pulsed-dynamic electrolytic machining apparatus and method, belonging to the field of electrolytic machining. The apparatus consists of a blade workpiece, a cathode plate, a cathode holder, and an insulating sleeve. The cathode plate undergoes high-frequency reciprocating vibration during radial feeding, coordinated with the synchronous switching of a pulse power supply, to achieve pulsed-dynamic electrolytic machining. In this pulsed-dynamic electrolytic machining method, the cooling medium flows into the insulating sleeve from the inlet of the cooling channel, flows through the cooling channel, and then flows out from the outlet of the cooling channel, reducing the temperature inside the insulating cavity. As the blade is shaped and enters the insulating cavity, the cooling medium undergoes convective intermittent heat exchange with the stray electrolyte within the cooling channel, reducing the temperature and conductivity of the stray electrolyte, and even freezing the stray electrolyte, creating a low-temperature environment around the shaped blade and inhibiting the electrolytic reaction in the stray corrosion zone. Pulsed-dynamic machining promotes the removal of electrolytic products and heat, further improving machining accuracy and surface quality.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Simple device for preventing water from falling off from chain type machine
The utility model discloses a simple device for preventing water from falling off from a chain type machine, which comprises a roller conveyor, a groove box is arranged below rollers of the roller conveyor, a water falling groove is arranged between two adjacent rollers on the roller conveyor, and the port of the water falling groove is lower than the top edge of the rollers on the roller conveyor; the roller conveyor is simple in structure, reasonable in design and novel and unique in idea, water drops falling from a battery piece can be collected by adding the water falling groove in the roller conveyor, the situation that the conductivity of an acid solution is reduced due to the fact that the water drops fall into the acid solution in the groove box is prevented, the etching effect is guaranteed, and meanwhile acid consumption is reduced.
Owner:CHUZHOU YIJING PHOTOELECTRIC TECH CO LTD
Preparation process for producing water for injection based on hollow fiber deoxidation membrane
PendingCN121948748Ameet stringent requirementsreduce conductivityWater/sewage treatment by irradiationGeneral water supply conservationHollow fibreFiber
The invention relates to a preparation process for producing water for injection based on a hollow fiber deoxidation membrane, and belongs to the technical field of preparation of water for injection medicines. According to the preparation process of the water for injection, dissolved oxygen in a water body can be stably removed, reproduction of microorganisms, bacteria and the like in the water can be effectively restrained by strictly controlling the content of oxygen and carbon dioxide in the water, meanwhile, due to removal of carbon dioxide in the water body, the conductivity of the water body is further reduced, the pH value of the finished water is stabilized to be 6.5-7.5, and the water quality is improved. The related industrial standards of the water for injection are met, and the content of microorganisms and endotoxin meets the strict requirements of the 2025 edition pharmacopoeia. Compared with a traditional distillation method, the membrane method integration process does not need to consume a large amount of industrial steam, energy consumption can be remarkably reduced, and the operation cost is reduced; by optimizing the position of the hollow fiber deoxidation membrane device, the water quality and the storage stability of the water for injection can be improved, and the production cost and the maintenance cost can be reduced.
Owner:SHANDONG INST OF MEDICAL DEVICES & DRUG PACKAGING INSPECTION
Lithium ion conductive solid electrolyte and production method for lithium ion conductive solid electrolyte
InactiveEP4049974A4Improve lithium ion conductivityImprove temperature stabilityTantalum compoundsZirconium compounds
A lithium ion conductive solid electrolyte contains a lithium ion conductive powder having a garnet-type crystal structure including at least Li, La, Zr, and O, and a lithium ion conductive polymer. The lithium ion conductive solid electrolyte can maintain its shape without use of an additional polymer different from the lithium ion conductive polymer. The lithium ion conductive solid electrolyte exhibits an activation energy of 30 kJ / mol or less at 20°C to 80°C.
Owner:NITERRA CO LTD
Urban sewage recovery method
PendingCN119591285Aimprove qualityeasy to handleWater contaminantsScale removal and water softeningMunicipal sewageOrganic matter
The invention discloses an urban sewage recovery method which comprises the following steps: a, urban sewage and a draw solution are respectively fed into a raw material liquid side and a draw solution side of a forward osmosis membrane assembly for forward osmosis treatment, and the draw solution comprises a scale inhibitor; and b, feeding the effluent on the draw liquid side after the forward osmosis treatment into a nanofiltration membrane assembly, and carrying out nanofiltration treatment to obtain produced water. According to the urban sewage recycling method, the forward osmosis membrane and nanofiltration treatment processes are adopted, the scale inhibitor is adopted as the draw solution, efficient concentration is conducted on the domestic sewage, organic matter removal is achieved, and high-quality produced water is obtained.
Owner:北京市科学技术研究院资源环境研究所(北京市土地修复工程技术研究中心)
Low dielectric film based on layered compound and preparation method and application thereof
ActiveCN119650216AHigh porosityHigh mechanical strengthSemiconductor/solid-state device detailsSolid-state devicesIntegrated circuit manufacturingFilm base
The invention relates to the technical field of integrated circuit manufacturing, and discloses a low-dielectric film based on a layered compound and a preparation method and application thereof. The invention provides a layered compound: [Mx (OH) y] z + [(An-) z / n]. MH2O or [M1x1M2x2 (OH) y] z + [(An-) z / n]. MH2O, where [Mx (OH) y] z + or [M1x1M2x2 (OH) y] z + constitutes a positively charged laminate, an anion An-can be inserted by the expanded interlayer spacing; the invention further discloses a preparation method of the low-dielectric film based on the layered compound. The film has excellent dielectric properties (klt; 1.9), a low dielectric loss (lt; 0.02), the insulation property is good, and meanwhile, the excellent Young's modulus (YMgt; 20 GPa), the mechanical strength meets the requirements of a rear-end interconnection medium, and the material has a wide practical application prospect in the chip rear-end interconnection industry; meanwhile, the material can be used as a transistor insulating layer material, interface traps of a thin film transistor insulating layer and an active layer are reduced, and the carrier mobility and on-off ratio of a transistor are improved.
Owner:ZHEJIANG UNIV
Negative electrode, preparation method of negative electrode and battery
ActiveCN119481380AEasy to adaptImprove adaptabilityNegative electrodesNon-aqueous electrolyte accumulator electrodesElectrical batteryBattery cell
The invention relates to the technical field of semi-solid batteries, in particular to a negative electrode, a preparation method of the negative electrode and a battery. The negative electrode comprises a current collector, a negative electrode active material layer arranged on the current collector and a polymer layer arranged on the side, away from the current collector, of the negative electrode active material layer, the polymer layer comprises an inorganic compound and a polymer, the chemical formula of the inorganic compound is Ax-ByFz, x is larger than or equal to 1, y is larger than or equal to 1, z is larger than or equal to 3, and x is larger than or equal to 1. A is at least one of magnesium, aluminum and zinc, B is at least one of lithium or sodium, and F is fluorine. According to the invention, the polymer is combined with the inorganic compound with the chemical formula of Ax-ByFz, so that cracks generated by the interfacial film due to the change of the volume of the negative electrode in the use process can be avoided, the service life is prolonged, the cycle performance is improved, and meanwhile, the lithium / sodium ion transfer number is increased, so that the electrochemical performance of the battery is remarkably improved.
Owner:SVOLT ENERGY TECHNOLOGY CO LTD
Preparation method of micron-sized hexagonal iron / graphene composite wave-absorbing material
PendingCN119119957ASimple processimprove securityOther chemical processesMagnetic/electric field screeningDielectricFreeze-drying
The invention discloses a preparation method of a micron-sized hexagonal iron / graphene composite wave-absorbing material, and relates to the technical field of preparation of electromagnetic wave absorbing materials. The invention aims to solve the key technical problems of impedance mismatch and weak attenuation capability caused by high conductivity and high dielectric property of graphene. The method comprises the following steps: inducing the generation of anisotropic morphology by taking metal cations as a precursor and hexadecyl trimethyl ammonium bromide as a surfactant, mixing graphene oxide with the metal cations and the surfactant, carrying out hydrothermal reaction and freeze-drying processes, and carrying out heat treatment in a reducing gas atmosphere to prepare the iron / graphene composite material. According to the invention, dielectric parameters of graphene are regulated and controlled by using a strategy of compounding an anisotropic magnetic material and graphene, so that impedance matching is improved, and a dielectric-magnetic loss mechanism is developed to improve the attenuation capability. The hexagonal iron / graphene composite wave-absorbing material prepared by the method is applied to the field of electromagnetic wave absorbing materials.
Owner:HARBIN INST OF TECH
Aluminum alloy disc blank for magnetic disc and magnetic disc
ActiveCN116547398BControl the amount of Mgreduce conductivityLiquid applicationBase layers for recording layersElectro conductivityAluminium alloy
The present invention relates to an aluminum alloy disc blank for a magnetic disc, characterized by being formed of an aluminum alloy containing Mg: 3.40 to 3.90 mass%, the balance consisting of Al and unavoidable impurities, the aluminum alloy disc blank for a magnetic disc having an electrical conductivity of 36.0% IACS or more.
Owner:UACJ CORP +1
Ce-based alloy sputtering target and preparation method thereof
PendingCN121976105AIncrease the number ofHigh porosityVacuum evaporation coatingSputtering coatingThin membraneImpurity
The invention discloses a Ce-based alloy sputtering target and a preparation method thereof, the sputtering target comprises any one of Sm, Gd and Y, and further comprises Ce and inevitable impurities, the content range of the Sm, Gd or Y element is 5-25 atom%, the impurities comprise C, S and O, and the Vickers hardness of the sputtering target is greater than 35 Hv. The Ce-based alloy sputtering target provided by the invention solves the problems that the existing Ce-based alloy target is easy to oxidize in the sputtering process, the sputtering rate is unstable, the formed CeO2-based electrolyte film is not compact and the like.
Owner:GRIREM ADVANCED MATERIALS CO LTD +1
Graphene powder, and preparation method therefor and application thereof
The present invention relates to a graphene material. Disclosed are a graphene powder and its preparation method and application. The graphene powder is a stack of graphene sheets. The graphene powder involves in its Raman spectrum a D peak and a G peak with peak heights of ID and IG respectively, where ID / IG is 0.10 or less. The graphene powder in accordance with the present disclosure can be applied in conductive composite materials, anti-corrosion coatings, heat dissipation composite materials. In particular, when used in lithium-ion batteries, it can significantly reduce electrode internal resistance and improve battery stability at any current rates.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1
Secondary battery and use thereof
The present application belongs to the technical field of batteries, and particularly relates to a secondary battery. The secondary battery provided by the present application comprises a positive electrode plate, a negative electrode plate and electrolyte, wherein the electrolyte comprises an organic solvent, and the organic solvent comprises a cyclic ester solvent and a chain ester solvent; the secondary battery parameter satisfies Formula (1). The secondary battery has good dynamic performance at low temperature, and has good capacity retention rate and lower impedance under the low temperature condition by adjusting the electrolyte and the negative electrode plate and the combined action of the electrolyte and the negative electrode plate.
Owner:SUNWODA MOBILITY ENERGY TECHNOLOGY CO LTD
Manufacturing method of biological pressure sensor chip
PendingCN119469489Areduce conductivitySmall bridge resistanceFluid pressure measurement using ohmic-resistance variationForce measurement using piezo-resistive materialsChemical vapor depositionChemical stability
The invention discloses a method for manufacturing a biological pressure sensor chip. The method comprises the following steps of: forming a pressure sensitive resistor with a relatively low resistance value in a substrate through a multi-ion implantation process; processing and forming a wafer layer at the bottom of the chip by using a dry etching process; and depositing a passivation layer on the surface of the chip by adopting a chemical vapor deposition process. According to the invention, the resistor obtained through a multi-ion implantation technology has relatively low conductivity and small bridge resistance, so that the chip has high sensitivity and precision; the dry etching directivity is good, and high-precision machining can be achieved; a compact Si3N4 passivation layer is formed on the surface of the chip by using a chemical deposition method, so that compactness and chemical stability are achieved, and the radiation resistance of the chip is improved.
Owner:SHANGHAI LEPURE BIOTECH CO LTD
Latent heat type functional fluid for cooling fuel cell and preparation method of latent heat type functional fluid
PendingCN119144296AImprove heat transfer effectHigh latent heatFuel cell heat exchangeHeat-exchange elementsParaffin waxThermodynamics
The invention discloses a latent heat type functional fluid for fuel cell cooling and a preparation method thereof, and belongs to the technical field of fuel cell cooling. The latent heat type functional fluid for cooling the fuel cell comprises a base fluid and an additive, the additive is a boron nitride and paraffin phase change microcapsule with a core-shell structure, and porous / flaky boron nitride is a shell and wraps the paraffin core. The base solution is an ethanol water solution with the mass fraction of 50%, and the mass fraction of the additive is 2-30%. The preparation method of the functional fluid comprises the following steps: preparing an emulsifier solution, preparing an oil / water phase emulsion, preparing a flaky / porous boron nitride dispersion liquid, mixing the flaky / porous boron nitride dispersion liquid with the oil / water phase emulsion, adjusting the pH value, filtering, drying to obtain a phase change microcapsule, and mixing the phase change microcapsule with an ethanol water solution. By adopting the latent heat type functional fluid for cooling the fuel cell and the preparation method of the latent heat type functional fluid, the problems of weak heat exchange capability and high conductivity of the existing fuel cell cooling liquid can be solved.
Owner:JIANGSU UNIV
Efficient antibacterial and mildewproof liquid crystal glass spacer paper and preparation method thereof
This invention belongs to the field of papermaking and provides a high-efficiency antibacterial and mildew-resistant liquid crystal glass spacer paper and its preparation method. It includes: (1) Base paper preparation process: 100% bleached softwood pulp is selected as fiber raw material, pulped to 22-28°SR, without adding any wet end additives to ensure the cleanliness of the base paper, formed on the wire in the headbox, and then dewatered in the press section to obtain a basis weight of 48-52 g / m 2 (2) Surface treatment process: Select hydrophobically modified polyvinyl alcohol, mildew inhibitor and water-resistant agent to prepare surface sizing solution, the concentration of surface sizing solution is 2-4%, and apply sizing solution to the surface of the base paper, the amount of sizing is 0.8-2g / m 2 After drying in a drying cylinder, the material is calendered and then rolled to obtain a high-efficiency antibacterial and anti-mildew liquid crystal glass spacer. The liquid crystal glass spacer prepared by this method has good hydrophobic properties and anti-mildew effect, while also taking into account the characteristics of high cleanliness, low electrical conductivity, and high surface strength.
Owner:PRODUCTIVITY PROMOTION CENT OF PAPER IND +1