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41results about How to "Quick migration" patented technology

Fe-cu-mn ternary hydrotalcite-like catalyst and preparation method thereof

The application relates to the field of wastewater treatment catalysis, and discloses a Fe-Cu-Mn ternary hydrotalcite-like catalyst and a preparation method thereof, which comprises iron, copper and manganese; the iron, copper and manganese are distributed in the layer plate metal central site in an atomic dispersion mode; the layer plate oxygen octahedron is in a non-symmetrical stretching distortion state; a 3.2-4.8 degree deviation is generated in the manganese oxygen copper bond angle in the layer plate; the lattice parameter a of the layer plate 110 crystal face direction is 0.305-0.312 nm; the molar ratio of copper to manganese is 1:2-1:5; and the molar sum of copper and manganese to the molar ratio of iron is 2:1-4:1. According to the application, the lattice non-symmetrical distortion induces the space overlap of the auxiliary metal and the iron active center orbit, an electron transfer path is constructed, the shielding effect of the hydroxyl ion on the iron active site under the alkaline environment is eliminated, the catalytic site activity is maintained, and stable and efficient catalytic treatment under wide pH working conditions is realized.
Owner:HUNAN DEEYA ENVIRONMENTAL ENG CO LTD

Carbon-based composite catalytic material, preparation method and application thereof

PendingCN122230765Astable coordination structurequick migrationCatalyst activation/preparationOrganic fertilisers
This invention discloses a carbon-based composite catalytic material, its preparation method, and its applications. The invention employs a one-step carbonization process involving molten salt confinement, a non-urea nitrogen source, and no ball milling: a dinuclear iron precursor, nitrogen-containing organic matter (as both a non-urea nitrogen source and a carbon source), ZnCl2, and a molten salt system are mixed. After high-temperature pyrolysis under an inert atmosphere, the mixture is sequentially washed with hot water to dissolve the molten salt, followed by washing with HCl solution and drying. The entire process eliminates the need for complex mechanical treatments such as ball milling, simplifying the steps and providing milder conditions, making it more suitable for scale-up preparation and engineering applications. The above-mentioned carbon-based composite catalytic material is applied to the degradation of chlorinated organic pollutants in soil, particularly in conjunction with persulfate oxidants to construct an advanced oxidation system. The highly coordinated dinuclear M2N6 reaction center efficiently activates persulfate, generating sulfate radicals, hydroxyl radicals, and / or non-radical active species, achieving rapid degradation of recalcitrant chlorinated organic pollutants.
Owner:SOUTHEAST UNIV

In-situ composite perovskite positive electrode active material and preparation method and application thereof

The invention relates to the technical field of preparation of lithium ion battery positive electrode materials, in particular to an in-situ composite perovskite positive electrode active material and a preparation method and application thereof. The preparation method of the in-situ composite perovskite positive electrode active material comprises the following steps: mixing a lithium compound, a phosphate compound, a carbon source, a rare earth metal compound, a cobalt compound and / or a nickel compound with an iron compound or an iron compound and a manganese compound in a solvent to obtain mixed slurry; carrying out spray drying on the mixed slurry to obtain composite precursor powder; and sequentially carrying out pre-sintering treatment and formal sintering treatment on the composite precursor powder to prepare the in-situ composite perovskite positive electrode active material. Through the solution mixing and co-sintering process, the in-situ compounding of the perovskite phase and the positive electrode base material at the atomic scale is realized, the interface bonding and ion transmission efficiency between the perovskite phase and the positive electrode base material are remarkably enhanced, and the cycling stability is remarkably improved while the high capacity of the obtained positive electrode active material is maintained.
Owner:GEM WUXI ENERGY MATERIAL CO LTD +1

An attribute fusion method and system based on unsupervised hybrid multimodal and ternary adaptive transfer autoencoder

PendingCN122330980APreserve independent feature contributionsImprove geological interpretation accuracyPattern recognitionEngineering
This invention discloses an attribute fusion method and system based on unsupervised hybrid multimodal and ternary adaptive transfer autoencoder, belonging to the fields of artificial intelligence and seismic exploration. The method includes: constructing an unsupervised hybrid multimodal adaptive weighted feature fusion autoencoder (UHM-AWFFA) network, where the encoder uses a multi-branch independent encoder to extract deep independent features of multiple seismic attributes and dynamically fuses them through a weighted feature fusion layer; the decoder performs hierarchical reconstruction of the fused features, simultaneously outputting the reconstruction results of each attribute and the fused attribute profile; training is performed using an interactive reconstruction loss function, and fine-tuning is performed using a ternary multimodal adaptive dynamic transfer learning (TE-MADT) strategy, including a gradient-driven adaptive thawing mechanism, a multimodal collaborative transfer strategy, and a cross-modal knowledge distillation mechanism. This invention achieves nonlinear intelligent fusion of seismic attributes, effectively uncovers deep coupling relationships between attributes, and improves the geological interpretation accuracy of the fused profile.
Owner:CHINESE ACAD OF GEOLOGICAL SCI

Preparation of platinum monatomic modified zinc cadmium sulfide catalyst

PendingCN121797357ADecreased fluorescence intensityquick migrationHydrogenCatalyst activation/preparationPtru catalystPotassium tetrachloroplatinate
The invention belongs to the technical field of photocatalytic hydrogen evolution, and discloses preparation and application of a platinum monatomic modified zinc cadmium sulfide catalyst. Aiming at the urgent demand of clean energy under energy crisis and the problems of insufficient efficiency, complex preparation, high cost and the like of the existing photocatalytic hydrogen evolution material, the invention aims to provide a catalyst which is simple and convenient in process, controllable in cost and excellent in hydrogen evolution performance. According to the preparation method, zinc acetate, cadmium chloride, thiourea, polyvinylpyrrolidone, potassium tetrachloroplatinate and a hydrazine hydrate solution are taken as raw materials, and precise modification and stable loading of platinum single atoms on the surface of zinc cadmium sulfide are realized through combination of a hydrothermal synthesis method and a photodeposition technology. The catalyst shows excellent catalytic activity and long-term stability in the field of photocatalytic hydrogen evolution, the hydrogen evolution efficiency can be remarkably improved, an efficient solution is provided for clean energy development, and the application value is wide.
Owner:HARBIN UNIV OF SCI & TECH

Carbon electrode process control method and system

PendingCN122088753AImplement alignment evaluationImprove stabilityEnsemble learningCarbon compoundsDecision modelAlgorithm
The invention discloses a carbon electrode process control method and system, and the method comprises the steps: carrying out the secondary index division of multi-source data indexes of a carbon raw material, and constructing a comparable data space of the indexes of the raw material; establishing a comprehensive index system based on the comparable data space, and constructing a two-stage linear weight coupling structure based on the comprehensive index system to form an index fusion weight vector; based on the index fusion weight vector, constructing a multi-path evaluation decision model, and performing weighted calculation on each index in the comparable data space according to the index fusion weight to generate a corresponding sorting result; based on the sorting result, establishing a standard reaching probability prediction model, and correcting the sorting result according to the standard reaching probability; based on the corrected sorting result, unification processing of the process window is achieved, and a process parameter map is constructed; and carrying out process execution optimization and process monitoring on the carbon electrode production process based on the process parameter atlas. According to the method, the stability and reusability of the carbon electrode process decision are improved.
Owner:CENT SOUTH UNIV +1

Alloy ion / electron mixed conductor and application thereof

The invention belongs to the technical field of solid-state batteries, and discloses an alloy ion / electron mixed conductor and application thereof. The mixed conductor is prepared by taking antimony powder, lithium powder or sodium powder and at least one metal powder of lanthanum, scandium, yttrium, aluminum, gallium and indium as raw materials through ball-milling mixing, tube sealing annealing and quenching treatment. When the mixed conductor is used as an interlayer of a lithium / sodium metal negative electrode and an electrolyte in the solid-state battery, the growth of lithium / sodium dendrites can be effectively inhibited through a specific nucleation mechanism, and the utilization rate of the metal negative electrode is improved; when the conductive additive is used as a conductive additive of a silicon, red phosphorus or graphite / hard carbon negative electrode material, by virtue of high ion / electron conductivity and good potential stability, the interface side reaction is reduced, and the rate capability and the cycling stability of the negative electrode material are remarkably improved.
Owner:UNIV OF SCI & TECH OF CHINA

Mesoporous TiO2 / coumarin-doped graphite-phase carbon nitride composite photocatalyst and preparation method and application thereof

PendingCN122499848AClose interface contactGuaranteed normal transmission
This application belongs to the field of nanophotocatalytic materials technology, and discloses a mesoporous TiO2 / coumarin-doped graphitic carbon nitride (CM-CN) composite photocatalyst, its preparation method, and its application. The invention first uses a crystallization-driven single-colloidal assembly method to prepare TiO2 particles with a uniform mesoporous structure. Then, dihydroxycoumarin is mixed with urea using a thermal polycondensation method and calcined at high temperature to obtain CM-CN. Next, CM-CN and mesoporous TiO2 are self-assembled in a solvent using a solvent dispersion-promoting technique to obtain the mesoporous TiO2 / CM-CN composite photocatalyst. This mesoporous TiO2 / CM-CN composite photocatalyst possesses a hierarchical pore structure, high specific surface area, excellent hydrophilicity, and strong interfacial bonding, achieving efficient transfer and separation of photogenerated carriers, and enabling the construction of a green, stable, and highly active photocatalytic system. The material preparation process is simple, the raw material cost is controllable, there is no secondary pollution, and the photocatalytic performance is significant, showing good potential for large-scale production and widespread application.
Owner:KUNMING UNIV OF SCI & TECH

A battery, a preparation method thereof, a battery pack, and an electric device

The application provides a battery, a battery pack and an electric device, and the battery comprises a negative electrode sheet, the negative electrode sheet comprises a solid-state electrolyte interface layer, the solid-state electrolyte interface layer comprises a fluorinated salt and a carbonate salt; the solid-state electrolyte interface layer satisfies 50% <= a1 <= 85%, 40% <= b1 <= 70%, and the application can simultaneously reduce the battery impedance and maintain the cycle stability.
Owner:BYD CO LTD

Vehicle-mounted adaptive communication method and system

This invention relates to a vehicle-mounted adaptive communication method and system. The method includes: after the vehicle starts, searching for an ad hoc network via the vehicle's in-vehicle communication terminal, sending an access request and accepting authentication, and accessing the ad hoc network after successful authentication; during voice communication via the ad hoc network, collecting environmental data of the vehicle in real time, and predicting the optimal communication channel and transmission power parameters based on the environmental data; using the optimal communication channel and applying the transmission power parameters for voice communication, and monitoring the channel quality of the optimal communication channel during voice communication; when the channel quality does not meet a preset quality threshold, re-determining a new optimal communication channel, switching to the new optimal communication channel, and updating the transmission power parameters to continue voice communication. Using this invention can improve the reliability of in-vehicle communication terminal communication and the clarity of voice calls.
Owner:WUHAN JIANGXIA CHUNENG AUTOMOBILE TECHNOLOGY R&D CO LTD

A spatially confined copper-based catalyst for activating persulfate to degrade organic pollutants in water, and a preparation method and application thereof

PendingCN122582959AIncrease the probability of collisionhigh selectivity
This invention discloses a method for preparing a spatially confined copper-based catalyst for activating persulfate degradation of organic pollutants in water: (1) Dissolve nano-oxide materials and carbon sources in a solvent, stir thoroughly, centrifuge, dry, and then calcine the resulting powder at high temperature. After cooling, etch with an etching solution, centrifuge, and dry to obtain spatially confined carbon spheres; (2) Disperse the spatially confined carbon spheres obtained in step (1) with copper salt and precipitant in water, centrifuge, dry, and then calcine the resulting powder at high temperature. After cooling, the spatially confined copper-based catalyst is obtained. This invention also includes the spatially confined copper-based catalyst prepared by the above method and its application in activating persulfate degradation of organic pollutants in water. By constructing a carbon sphere-CuO heterostructure catalytic structure with spatial confinement effect, the synergistic effect of spatial confinement, interfacial electronic coupling, and active sites is fully utilized, achieving multiple synergistic regulation of pollutant enrichment, rapid electron transport, and selective activation of persulfate. Compared with traditional copper-based catalytic systems, this invention can effectively regulate the generation pathway of reactive oxygen species, significantly improve the utilization efficiency of persulfate and the selectivity of pollutant degradation, and significantly enhance the stability, anti-interference ability and recycling performance of the catalyst. It can be widely used in the deep purification of recalcitrant organic pollutants such as pesticides, antibiotics, and phenols, as well as in the treatment of complex wastewater.
Owner:ZHEJIANG GONGSHANG UNIVERSITY

Microbe-mof photosensitive active material and preparation method and application thereof

PendingCN122303212AImprove photocatalytic activityImprove light absorption capacityMicroorganismMicrobiology
This invention belongs to the field of photocatalysis technology, specifically relating to a microbial-MOF photosensitizing material, its preparation method, and its application. The microbial-MOF photosensitizing material comprises antibiotic-degrading bacteria and a metal-organic framework shell encapsulating the surface of the antibiotic-degrading bacteria. The metal-organic framework in the microbial-MOF photosensitizing material provided by this invention has a porous structure, enabling the encapsulated microorganisms to receive sufficient light, enhancing light absorption capacity, and facilitating rapid carrier migration. Ultimately, this gives the microbial-MOF photosensitizing material superior photoelectrocatalytic activity, lowers the photoelectrocatalytic reaction energy barrier, and increases the kinetics of antibiotic degradation.
Owner:KUNMING UNIV OF SCI & TECH

A method for preparing a composite solid electrolyte having a soft filler

ActiveCN116826159Bquick migrationFacilitate dissociationSolid state electrolyteMolecular sieve
The present application relates to a kind of preparation method of composite solid electrolyte with soft filler.The soft filler is obtained by converting nanocellulose particles into lithiated cellulose, and is a transparent cement-like composite material, with lithium ion transmission and anion molecular sieve function.The composite solid electrolyte is obtained by mixing solvent, polymer, lithium salt and lithiated cellulose.The lithiated cellulose has numerous oxygen-containing groups, opening up new transport path of lithium ion in composite solid electrolyte.At the same time, the lithiated cellulose can also limit the disordered motion of lithium salt anion, improve the lithium ion transport efficiency.It is found that the lithiated cellulose strengthens the physical and chemical properties of composite solid electrolyte.The process of composite solid electrolyte prepared by the method is simple, raw materials are easy to obtain, safe and pollution-free, suitable for large-scale production.
Owner:BEIJING INST OF TECH

Carbon black and process for its production

PendingCN122587516AGood hydrogen supply activitypromote homogenization
The present application relates to the technical field of carbon black production, in particular to a kind of carbon black and its production process.The present application solves the problems of large viscosity of ethylene tar, incomplete cracking, poor dispersibility and surface inertness of carbon black.First, the raw oil is treated by decalin / NMP complex solvent and ultrasonic wave, then a ferrocene / potassium borate composite catalyst is added, and the double-stage atomization technology is combined with gradient temperature field for combustion cracking;In the reaction quenching section, the modified quenching liquid containing KH-550 and urea is sprayed in the specific temperature zone for in-situ grafting, and finally the finished product is obtained by alternating speed granulation and microwave fluidized drying;The prepared carbon black has the characteristics of high structure, high yield, low impurity and high surface activity, and has high application value in the field of rubber reinforcement and high-performance composite materials.
Owner:NANJING YUANGANG FINE CHEMICALS CO LTD

A method for preparing an amphiphilic photocatalyst by loading metal oxide on carbon nitride and application thereof to a water-phase benzene hydroxylation reaction

This invention discloses a method for preparing an amphiphilic photocatalyst using carbon nitride-supported metal oxides and its application in the aqueous-phase benzene hydroxylation reaction. This catalyst not only retains the unique amphiphilicity of carbon nitride, improving the interfacial contact and mass transfer process between the water / benzene phases and promoting the rapid and efficient transfer of •OH generated in the aqueous phase to benzene to participate in the reaction, but also forms a good interfacial contact between the metal oxide and carbon nitride phases during molten salt heat treatment. Under illumination, photogenerated electrons can efficiently migrate from carbon nitride to the surface of the metal oxide, driving the rapid photo-Fenton reaction. Therefore, this catalyst exhibits excellent catalytic performance in the photocatalytic aqueous-phase benzene hydroxylation reaction to prepare phenol. This invention does not require the addition of additional organic solvents and can achieve a highly efficient benzene hydroxylation reaction in a pure aqueous phase, conforming to the concept of green chemistry and showing good prospects for industrial application.
Owner:FUZHOU UNIV

Method for improving performance of high-strength steel plate through electric field isothermal segmented spheroidizing annealing

PendingCN122081617AReduced activation energy for diffusionquick migration
The invention relates to the technical field of metal material heat treatment, and discloses a method for improving the performance of a high-strength steel plate through electric field isothermal segmented spheroidizing annealing, which comprises the following steps: selecting a high-carbon martensitic stainless steel cold-rolled plate; fixing in a vacuum furnace, and carrying out radiation preheating to 650-750 DEG C; starting a pulse power supply to cooperate with a radiation field to rapidly heat to 1050-1080 DEG C for austenitizing; the current density is adjusted, air cooling is conducted to 730-760 DEG C, and electric field isothermal spheroidizing annealing is conducted; and finally, cooling to 450-500 DEG C along with the furnace, and then carrying out air cooling. According to the method, carbide dissolution is accelerated through the electromigration effect of pulse current, dispersion and precipitation of fine spherical carbides are promoted through segmented temperature control and an electric field morphological modification mechanism, network carbides are eliminated, the annealing period is obviously shortened, energy consumption is reduced, and the strength, plasticity and corrosion resistance of the steel plate are improved.
Owner:SHANXI DISIMAN SPECIAL METAL TECH CO LTD +1

Carbonized aggregate, carbonized product with high carbonization depth and preparation method of carbonized product

PendingCN121779024AImprove mechanical propertiesquick migrationSolid waste management
The invention provides carbonized aggregate, a carbonized product with high carbonization depth and a preparation method of the carbonized aggregate, and belongs to the technical field of carbon sequestration building materials.The preparation method comprises the following steps that solid waste raw materials, cement, silica fume, a thickening agent, a water reducing agent and water are evenly mixed and subjected to pouring forming, and a green body is obtained; and drying the green body until the water content is 13-20%, and carbonizing and curing to obtain the high-connectivity artificial carbonized aggregate. And stacking a plurality of high-connectivity artificial carbonized aggregates in a mold in advance, pouring the slurry into the mold, maintaining at 25 DEG C for 24 hours, demolding, carrying out microwave pretreatment, and then carrying out carbonization maintenance to obtain the carbonized product. According to the method for constructing the continuous carbon dioxide transportation network by using the high-connectivity artificial carbonized aggregate and the preset aggregate technology, the light high-strength carbonized product with the high carbonization depth is prepared, the compressive strength can reach 39.23 MPa after the carbonized product is carbonized for 1 day, the density is 1711 kg / m < 3 >, the carbonization degree is 43.27%, the carbonization uniformity depth is 50 mm, the carbon fixation amount is 356.2 kg / m < 3 >, and the pre-curing time is 4 h.
Owner:WUHAN UNIV OF TECH

All-solid-state supercapacitor based on CuCo2O4-PDMT composite electrode and preparation method

PendingCN121812379Areduce transmission efficiencyImprove electrode electronic conductionHybrid capacitor electrolytesHybrid capacitor electrodesCapacitancePolyethylene glycol
The invention belongs to the technical field of supercapacitor electrode materials, and relates to an all-solid-state supercapacitor based on a CuCo2O4-PDMT composite electrode and a preparation method thereof.The preparation method comprises the steps that copper nitrate and cobalt nitrate serve as metal sources, and a CuCo2O4 bottom layer is prepared through constant-potential electro-deposition-muffle furnace annealing; 2, 5-dimethylthiophene (DMT) is used as a monomer, a PDMT top layer is prepared through cyclic voltammetry electropolymerization, and a CuCo2O4-PDMT composite electrode is formed; polyethylene glycol (PEG) is used as a gel matrix, lithium perchlorate (LiClO4) is used as an ion source, nano TiO2 is used as a reinforcing agent, and the composite gel electrolyte is prepared through'microwave dissolution-ultraviolet curing '. The composite electrode and the gel electrolyte are assembled into the all-solid-state symmetrical supercapacitor, so that the defects of high electrode electron transmission impedance, low gel electrolyte ion conductivity and insufficient cycling stability of the existing all-solid-state supercapacitor are overcome, and the collaborative construction of the composite electrode conductive network and the gel electrolyte ion channel is realized; and the performance limitation of traditional single component optimization is broken through.
Owner:XIAN THERMAL POWER RES INST CO LTD +1

Method for determining migration path, device, electronic equipment and program product

ActiveCN121530972BSeamless migrationquick migrationTransmissionPathPingEdge node
The application discloses a kind of determination methods of migration path and its device, electronic equipment, program product, it is related to artificial intelligence technical field, wherein, the determination method includes: current edge node is collected at current measurement time point Multiple signal data, and based on all signal data, the index value of multiple indexes is calculated;In the case where there is index value not in the preset range, all index values are input to target model, and the service type handled by current edge node is obtained;Based on the index value of all indexes and service type, the migration generation value is calculated, wherein, migration generation value corresponds to preset cost range, each preset range corresponds to migration path;Determine the target preset cost range of migration generation value, determine the target migration path based on the target preset cost range.The present application solves the technical problems that the migration path cannot be accurately determined in the related art, resulting in a high service migration failure rate and affecting business continuity.
Owner:CHINA TOWER CO LTD

Large-scale multi-source panoramic situation awareness system and method based on dynamic digital twinning

The invention discloses a large-scale multi-source panoramic situation awareness system and method based on dynamic digital twinning, and belongs to the technical field of safety monitoring of large carrier platforms. The system takes a digital twinning scene as a unified space-time reference, realizes system-level integration of multi-source sensing, data processing and upper computer application, and comprises a multi-source sensing terminal layer, a digital twinning and data processing layer and an upper computer application and visualization layer; the method comprises the steps of sensing data acquisition and edge processing, equipment installation calibration parameter loading and maintenance, carrier attitude and scene coordinate reference updating, multi-source sensing data mapping and dynamic digital twinborn fusion, target position mapping and multi-view visual output, abnormal situation identification, alarm and data recording. According to the method, unified situation space construction, accurate three-dimensional positioning and visual multi-view display can be realized in the navigation, berthing and on-duty scenes of the large ship, and the method has good method expansibility and platform universality.
Owner:NINGBO UNKNOWN DIGITAL INFORMATION TECH CO LTD

A boron-rich single-ion polymer artificial SEI film, and a preparation method and application thereof

ActiveCN115692710BImprove artificial SEI ion conductivityImprove migration countCell electrodesSecondary cells servicing/maintenanceElectrical batteryIonic polymerization
The application relates to the technical field of artificial solid electrolyte interface (SEI) layers, and discloses a boron-rich single-ion polymer artificial SEI film as well as a preparation method and application thereof. The artificial SEI film is a boron-rich three-dimensional cross-linked network structure with single-ion and self-healing functions; a large amount of boron in the structure can act as a Lewis acid to accelerate the dissociation of lithium salt anions and cations, so that the ion conductivity and migration number of the polymer artificial SEI film are improved; and the dynamic covalent bond behavior of borate ester bonds in the structure endows the polymer with self-healing performance, endows the artificial SEI film with self-healing performance, and improves the safety and electrochemical performance of a polymer lithium metal battery. The boron-rich single-ion polymer artificial SEI film provided by the application has high safety and good electrochemical performance, and can provide a new method for preparing a novel artificial SEI film.
Owner:JIANGXI CHEM IND ADVANCED TECH SCHOOL +1

A method for preparing hierarchical porous Fe7S8 / nitrogen-doped carbon composite nanowires and its application

The application relates to the field of sodium ion batteries, and discloses a preparation method of hierarchical porous Fe7S8 / nitrogen-doped carbon composite nanowires and application thereof. The application takes NTA as a metal ion chelating agent, chelates zinc ions and iron ions through a solvothermal reaction, and prepares a ZnFe-NTA precursor; the precursor is pyrolyzed at high temperature under an inert atmosphere, metal ion reduction is induced through a carbon thermal reaction, low-boiling-point zinc particles are volatilized, nitrogen-doped carbon formed through in-situ conversion of an organic ligand is combined, and a hierarchical porous structure is generated; finally, a gas-phase sulfuration method is adopted to form Fe7S8, and the hierarchical porous Fe7S8 / nitrogen-doped carbon composite nanowires are obtained. When the composite nanowires are used as a negative electrode of a sodium ion battery, the hierarchical porous structure can effectively promote full infiltration of electrolyte and rapid migration of sodium ions, and can improve cycle stability and rate performance.
Owner:ZHEJIANG SCI-TECH UNIV

A method for lithium-mediated electrochemical synthesis of ammonia

PendingCN122081964AAchieve multi-dimensional coordinated controlTo achieve selective regulationElectrodesElectrolytic agentPtru catalyst
A lithium-mediated electrochemical method for ammonia synthesis, relating to the field of ammonia synthesis technology, solves the technical problems of severe side reactions, limited nitrogen mass transfer, and poor interfacial stability in existing lithium-mediated ammonia synthesis systems. Tetra(4-formylphenyl)porphyrin iron and an amino-containing multifunctional organic ligand are added to a mixed solvent of n-butanol and o-dichlorobenzene. An acid catalyst is added, and after stirring until homogeneous, the mixture is degassed and sealed for reaction. The solid product is collected by centrifugation, washed, and dried to obtain COF powder. This powder is then added to an ethanol-water solution, followed by ultrasonic dispersion with Nafion solution. The powder is then drop-coated / sprayed onto the surface of a carbon paper current collector and dried. This powder is used as the working electrode, with a platinum mesh as the counter electrode, a platinum wire as the quasi-reference electrode, and a LiBF4 tetrahydrofuran solution as the electrolyte. Ethanol is used as the proton donor, and electrolysis is performed under a nitrogen atmosphere using a constant current. This invention can be applied to the field of ammonia synthesis technology.
Owner:CHANGCHUN INSTITUTE OF APPLIED CHEMISTRY CHINESE ACADEMY OF SCIENCES

Modified positive electrode material and preparation method thereof, composite positive electrode material and all-solid-state battery

The invention discloses a modified positive electrode material and a preparation method thereof, a composite positive electrode material and an all-solid-state battery, and belongs to the technical field of batteries. The modified positive electrode material comprises a positive electrode core, a first coating layer and a second coating layer, the surface of the inner core is coated with the first coating layer, and the surface of the first coating layer is coated with the second coating layer; the first coating layer is lithium niobium oxychloride halide, and the second coating layer is lithium zirconium oxychloride halide. The lithium niobium oxychloride halide electrolyte of the inner coating layer of the modified positive electrode material has relatively high ionic conductivity (greater than 10ms / cm), the rate capability of the positive electrode material can be improved, an electrochemical window exceeds 4V, and the modified positive electrode material can be adapted to a high-voltage high-nickel positive electrode material; the material lithium zirconium oxychloride halide of the outer coating layer also has an electrochemical stability window greater than 4V, and has relatively high room-temperature ionic conductivity (greater than 2ms / cm); the modified positive electrode material has relatively low internal resistance and relatively good electrochemical performance.
Owner:SHANGHAI XUANYI NEW ENERGY DEV CO LTD

A surface coating modification process for fast-charging graphite anode materials

This invention discloses a surface coating modification process for fast-charging graphite anode materials, belonging to the field of surface coating modification of graphite anode materials. The process includes the following steps: Graphite pretreatment: Natural spherical graphite or artificial graphite is selected as raw material and ball-milled for 3-8 hours. An appropriate amount of dispersant can be added to prevent graphite particle agglomeration. The ball-milled graphite particles are then acid-washed using a 10%-30% hydrochloric acid or sulfuric acid solution. This invention effectively removes impurities and defects from the graphite surface and increases the specific surface area and surface active sites of the graphite particles by precisely controlling the graphite pretreatment conditions, such as appropriate ball-milling time, acid concentration, and temperature. Simultaneously, a gradient coating structure is adopted, with multiple coatings using phenolic resin ethanol solutions of different mass fractions. Combined with conductive additives such as carbon nanotubes and graphene, as well as the introduction of metal salts, a more complete conductive network is constructed.
Owner:SHANGHAI WOCHENG CARBON NEW MATERIAL TECHNOLOGY CO LTD

Design method for code-based adjustable resolution and generalizable process SAR ADC

PendingCN122113804Aquick migrationSignificant pan-process advantagesCAD circuit designSpecial data processing applicationsSoftware engineeringHemt circuits
The application discloses a kind of design methods for realizing adjustable resolution and generalization process SAR ADC based on code, it is related to integrated circuit design automation technical field, wherein the method comprises: by coding description SAR ADC full circuit and dividing four core models, process and performance parameter are set as independent configurable item, realize circuit core logic and parameter complete decoupling;Linear, noise suppression, multi-structure adaptation and timing control ability of each model are optimized, so that its parameter dynamically matches target process and performance requirement;Fixed topology variable spacing layout layout strategy is used, corresponding process wiring rule is called, to realize cross-process node layout fast generation;General simulation verification platform is constructed, to generate excitation signal and call standardized case library, complete whole-process simulation verification.The application effectively reduces the research and development cost and cycle of domestic chip design, and provides high adaptability analog-digital conversion core support for multi-scene chip development.
Owner:TSINGHUA UNIVERSITY +1

Three-dimensional target detection method and device based on RoI conditional multi-head attention

The invention discloses a three-dimensional target detection method and device based on RoI conditional multi-head attention, and relates to the technical field of target detection. The method comprises the following steps: acquiring a three-dimensional candidate frame and a corresponding backbone feature map; linearly mapping the seven-dimensional geometric parameters into an attention query vector; constructing a regular grid in the three-dimensional candidate frame, and sampling in the backbone feature map to obtain a grid feature matrix; respectively and linearly mapping the grid characteristic matrix into a key matrix and a value matrix; by taking the attention query vector as a query, executing multi-head attention aggregation on the key matrix and the value matrix to obtain an aggregation feature of the three-dimensional candidate box; and based on the aggregation feature, outputting the category and position regression result of the three-dimensional candidate box through a shared full connection layer. According to the method, the geometric identity of the RoI is inquired, geometric conditional adaptive weighting is carried out among internal grid points through multi-head attention, and compared with a traditional flattening-MLP mode, the detection precision is greatly improved.
Owner:DALIAN MARITIME UNIVERSITY

A panel yield detection method and system based on machine learning and image processing

PendingCN122550585Alow cost of preparationAdapt to abnormal deficiencies
This invention provides a panel yield detection method and system based on machine learning and image processing, belonging to the field of yield detection technology. The method flow is as follows: edge detection is performed on the lamp-lit image of the display panel to be tested to obtain an edge image; connected component analysis is performed on the edge image to extract candidate regions of the panel; the maximum bounding rectangle of the candidate regions of the panel is constructed, and the geometric features of the maximum bounding rectangle are calculated; the geometric features are input into an isolated forest model to calculate the size anomaly score, and the existence of size anomalies is determined based on the anomaly score; color features are extracted from the candidate regions of the panel, and the existence of color anomalies is determined based on the color features; the results of the size anomaly and color anomaly determinations are combined to output the defect detection result of the display panel to be tested. This invention transforms the abnormal display problem into geometric integrity detection and color consistency detection, combining traditional image processing with the isolated forest algorithm, eliminating the need for a large number of anomaly sample annotations, and exhibiting strong adaptability and high accuracy.
Owner:CHENGDU UNION BIG DATA TECH CO LTD

A method and system for rapid scheduling and core allocation of multi-core server jobs

The application relates to a multi-core server job quick scheduling and core allocation method and system, which comprises the following steps: step 1: a client sends a job request to a server, and the server receives and caches the job request; step 2: a scheduler takes out the job request and allocates a pre-created container pool to execute the job; step 3: a scheduling strategy is defined, and cores are dynamically allocated according to core load and the number of jobs; when the cores are transferred, the scheduler reallocates the cores; when the cores are preempted, a recovery mechanism is used to recover and execute the jobs, and the execution result is returned to the client. The application introduces an event-driven strategy customization interface, supports users to quickly define and apply personalized scheduling strategies, and designs a microsecond-level, low-overhead core preemption and reallocation mechanism, so that efficient dynamic adjustment of resources can be realized in multi-program parallel jobs, and therefore the system performance and resource utilization can be significantly improved.
Owner:SHANDONG UNIV

Emotion recognition method, device and equipment based on small sample semantics and storage medium

The invention relates to an emotion recognition method and device based on small sample semantics, equipment and a storage medium. The method comprises the following steps: carrying out timestamp labeling on a shot in a video to be identified and adding adjacent audio context information to obtain a shot to be identified which mostly comprises a video clip and an audio clip; performing large language model training based on a given task and a to-be-recognized shot, generating time-aligned video structured description and audio structured description, fusing the time-aligned video structured description and audio structured description with audience features to obtain a multi-modal emotion recognition model, and outputting an emotion prediction result; when a new domain emotion recognition task is received, based on the multi-modal emotion recognition model, new domain semantic conditions are introduced to carry out low-rank adaptive weight adjustment, and the multi-modal emotion recognition model corresponding to a new domain is obtained through training in combination with a new domain training sample so as to carry out cross-domain emotion recognition. The emotion prediction precision can be improved, the small sample rapid migration and adaptive capacity of the model in the new field can be enhanced, and the generalization ability is higher.
Owner:SHANGHAI MININGLAMP ARTIFICIAL INTELLIGENCE GRP CO LTD