22results about How to "Enable mass manufacturing" patented technology

The invention discloses a multi-metal borate nano-particle as well as a preparation method and application thereof. The preparation method comprises the following steps: in the presence of small molecules with alkyl chains, performing high-temperature thermal decomposition on an organic metal compound or a metal salt compound precursor and organic borate in a solvent, and then centrifuging, modifying, performing ultrafiltration, dialyzing and purifying to obtain the multi-metal borate nanoparticles. The preparation method disclosed by the invention has the characteristics of mildness, high efficiency and strong controllability. The multi-metal borate nanoparticles prepared by the preparation method disclosed by the invention have the advantages of monodisperse size, relatively high magnetic property and good biocompatibility. Therefore, the prepared multi-metal borate nanoparticles not only have multi-modal imaging functions such as magnetic resonance imaging, near-infrared two-region imaging, nuclear medicine imaging and magnetic particle imaging, but also can be used for various treatment means such as magnetocaloric therapy and boron neutron capture therapy; potential advantages are realized in biomedical applications such as magnetic targeting tumor treatment and imaging contrast agents, and high practical values are realized.

The invention belongs to the technical field of manufacturing of negative-electrode-free sodium / magnesium metal battery current collectors, and discloses a copper-based composite current collector, a preparation method thereof and application of the copper-based composite current collector in a negative-electrode-free metal battery. The current collector is used for solving the problem that the cycle life of a battery is short due to disordered deposition of sodium / magnesium ions and overgrowth of sodium / magnesium dendrites of a traditional current collector under high current density and high surface capacity. According to the invention, the linear copper sulfide with the thickness of about 0.05-1 mu m is constructed on the surface of the copper foil in situ through a liquid-phase vulcanization method, the thickness of the copper sulfide modification layer is 0.5-5 mu m, and the nucleation overpotential of sodium ions or magnesium ions on a current collector can be effectively reduced. When the material is applied to a sodium / magnesium metal battery without a negative electrode, high average coulombic efficiency and excellent cycle life of the battery under ultra-high current density surface capacity can be realized.

The invention provides a silicon-based negative electrode material which comprises a silicon-based inner core and a coating layer coating the silicon-based inner core, the coating layer is made of a carbon material and a fast ion conductor, and the mass content of the fast ion conductor in the coating layer is gradually increased in the direction from the silicon-based inner core to the coating layer. The silicon-based negative electrode material is excellent in ionic conductivity and electronic conductivity, stable in structure and beneficial to being used in a negative electrode. The invention also provides a preparation method of the silicon-based negative electrode material, a negative electrode, a battery and electric equipment.

The present invention provides a three-dimensional Raman enhanced membrane for rapid identification of bacteria and a method and system thereof, wherein the three-dimensional Raman enhanced membrane for rapid identification of bacteria comprises a polymer material layer; the polymer material layer is provided with a plurality of funnel-shaped through holes, and the polymer material layer and the surfaces of the plurality of funnel-shaped through holes are both provided with Raman enhanced material layers. The three-dimensional Raman enhanced membrane for rapid identification of bacteria described in the present invention has a plurality of funnel-shaped through holes added to the polymer material layer, and during the detection process, the contact area between the pathogenic bacteria and the through holes (i.e., the polymer material layer) is large, which can indirectly improve the sensitivity of the detection.

This invention discloses a high-coercivity hard magnetic oxide semiconductor thin film with perpendicular magnetic anisotropy and its preparation method. The invention employs a multi-target alternating gradient film preparation process, using NiFeO4 and NiCo2O4 targets for alternating sputtering to prepare NiCo2-xFexO4-NiCo2O4 gradient thin films. Experimental results show that the obtained films exhibit a coercivity as high as 1T and good conductivity, with an anomalous Hall resistivity reaching 52.5 μΩ·cm. This preparation method has the advantages of simplicity and low cost, providing new possibilities for the development of magnetic storage devices. This method has significant application potential for realizing high-density, high-speed, and low-power magnetic storage devices, contributing to the development and application of magnetic storage technology.

The present invention belongs to the technical field of two-dimensional materials, specifically a kind of amorphous silicon dioxide two-dimensional material and its preparation method. The present invention uses pre-polymerized tetraethyl silicate, ethyl acetate and alkali source as raw materials, and prepares amorphous silicon dioxide two-dimensional material precursor by self-assembly reaction; utilizes easy high temperature, chemical etching and electrochemical corrosion sacrificial template method, and obtains amorphous silicon dioxide two-dimensional material by removing template; Compared with existing methods, this method has low cost, simple process, strong universality, and output improvement of 100-10000 times; product morphology is adjustable between 1μm-40μm, and thickness is adjustable between 1nm-10nm; the amorphous silicon dioxide two-dimensional material has excellent high temperature resistance (can withstand more than 1,000 degrees Celsius for a long time), good semiconductor properties and biocompatibility and other characteristics, and has broad application prospects in the fields of semiconductors and integrated circuits, biomedicine, aerospace and scientific research.

The present application belongs to the technical field of polyurethane / polyurea, and discloses a stress change material and a preparation method thereof. The stress change material comprises hydrophobic segments and hydrophilic segments. The stress change material can change in size in two ways under water stimulation: one is to absorb a large amount of water to induce rearrangement of the hydrophilic segments, so as to realize volume expansion; the other is to absorb a small amount of water as a plasticizer to promote the movement of the segments, so as to realize shape recovery. Meanwhile, due to the introduction of the hydrophobic segments, the polyurethane / polyurea can still maintain sufficient mechanical strength in a water environment, thereby widening the application range of the material.

The invention discloses a preparation method of a high-specific-capacitance supercapacitor electrode based on a carbon material, and the method comprises the steps: mixing the carbon material with a sodium alginate or carboxymethyl cellulose aqueous solution to obtain slurry; coating a substrate with the slurry to form a slurry film, immersing the slurry film and the substrate into a cross-linking agent for cross-linking, and then separating the hydrogel film from the substrate; and washing the hydrogel film with distilled water to remove the residual cross-linking agent, and then immersing the hydrogel film in electrolyte for electrochemical treatment to obtain the high-specific-capacitance supercapacitor electrode. According to the invention, the electrochemical stable potential window can be widened by 30% and the specific capacitance can be improved by about 100% under the condition that the existing commercial carbon material and electrolyte are utilized, and the preparation method is simple, is matched with the existing commercial production line and can realize large-scale preparation.

The invention belongs to the field of thermoelectric materials, and discloses a rapid preparation method of a high-performance inorganic plastic thermoelectric material, which comprises the following steps: (1) weighing elementary substance material powder corresponding to each element according to the nominal chemical dosage ratio of each element in the chemical formula of the inorganic plastic thermoelectric material; (2) mixing to obtain mixed powder; (3) putting the mixed powder into a quartz tube, vacuumizing and sealing; and (4) placing the vacuum-sealed quartz tube in a graphite crucible, then placing the crucible in an induction heating coil, heating to 1000-1100 DEG C, and carrying out heat preservation for 10-20 minutes to carry out induction heating smelting so as to obtain the inorganic plastic thermoelectric material cast ingot. According to the invention, the process of the preparation method is improved, based on induction heating, the rapid preparation of the inorganic plastic thermoelectric material can be realized only by utilizing induction heating to keep the temperature at 1000-1100 DEG C for 10-20 minutes, and the prepared inorganic plastic thermoelectric material has the characteristic of high performance in the aspects of thermoelectric performance and plasticity.

The invention relates to a system and a method for preparing methanol from biomass. The system for preparing methanol from biomass comprises at least one pyrolysis carbonization unit and a gasification synthesis unit; the pyrolysis carbonization unit comprises a pyrolysis reactor; the gasification synthesis unit comprises a second gasification reactor, a reforming reactor and a synthesis reactor; the preparation method of methanol comprises the following steps: S1, carrying out pyrolysis carbonization on primarily crushed biomass in a pyrolysis reactor to obtain biochar and pyrolysis gas; s2, the charcoal, oxygen and steam are subjected to a pressurized gasification reaction in the second gasification reactor, and second gasified gas is obtained; s3, the second gasified gas is subjected to a reforming reaction in the reforming reactor, and synthesis gas is obtained; and S4, carrying out a synthesis reaction on the synthesis gas in the synthesis reactor. The methanol production process can be amplified on a large scale, and the production cost is reduced.

The application provides a powder sintered titanium diffusion layer and a preparation method and application thereof, and belongs to the technical field of regenerative fuel cells, and comprises the following steps: preparing a coating A and a coating B, coating the coating A on a substrate to obtain a green film, coating the coating B on the surface of the green film to obtain a composite green film, and performing pretreatment, degreasing and sintering on the composite green film to obtain a powder sintered titanium diffusion layer with a hydrophobic Ti6O surface. The application provides a powder sintered titanium diffusion layer and a preparation method and application thereof, and realizes simple preparation of a titanium-based diffusion layer with adjustable surface hydrophilicity and hydrophobicity.

This invention provides a method for preparing a microtube monolithic oxygen carrier, comprising the following steps: First, a metal oxide is uniformly mixed with a binder, solvent, and dispersant to obtain a slurry; second, the slurry and a first curing agent are simultaneously added to a porous mold and extruded to obtain a first product; the first product is placed in a second curing agent to complete a phase transformation process, and then dried and shaped to obtain a second product; finally, the second product undergoes preliminary calcination and high-temperature calcination to obtain the microtube monolithic oxygen carrier. The monolithic oxygen carrier prepared by this invention has abundant axial and radial hierarchical pore structures, enabling simultaneous achievement of low bed pressure drop and low heat and mass transfer resistance. The oxygen carrier exhibits high reactivity, strong resistance to sintering and carbon deposition, and can be used in processes such as chemical looping combustion, reforming, or hydrogen production of gaseous fuels in fixed-bed reactors. The oxygen carrier structure is adjustable, has wide applicability to raw materials, and a simple preparation process, allowing for large-scale preparation and possessing broad prospects for promotion and application.

The invention discloses a preparation method and application of a PBO nanofiber solution and PBO nanopaper, during preparation of the PBO nanofiber solution, firstly, PBO chopped fibers are added into sulfonic acid functionalized ionic liquid to form a mixed solution, then the mixed solution is poured into a homogenizer to be dispersed to obtain a PBO micron / nanofiber mixed solution, then negative pressure suction filtration is performed, and the PBO nanofiber solution is obtained. The PBO nanofiber solution with the asymmetric charge interface is obtained. When the PBO nano paper is prepared, a PBO nano fiber solution is taken, deionized water is added, the PBO nano fiber solution and the deionized water are mixed according to the proportion of 1 g: 150 ml, then the mixture is stirred to be uniform in a magnetic stirring mode, negative pressure suction filtration is adopted, then deionized water is added for washing, a wet paper web is obtained, the wet paper web is sequentially subjected to drying and hot pressing, and the high-temperature-resistant and insulated PBO nano paper is obtained. The problems of PBO molecular weight reduction, environmental pollution and the like caused by a mixed strong acid system can be effectively avoided.

This invention provides a pH / ROS dual-responsive nanomedicine carrier, the structure of which is cyclodextrin modified with cinnamaldehyde and 4-hydroxyphenylboronic acid pinacol ester. Lecithin, phospholipid-polyethylene glycol (DSPE-PEG), and phospholipid-polyethylene glycol-RGD peptide are used as the shell of the nanomedicine, and the core consists of glucocorticoids and the prepared pH / ROS dual-responsive drug carrier to form a nanoformulation. This invention designs a pH / ROS dual-responsive drug carrier based on the microenvironment of the disease site. Compared with single pH-responsive or single ROS-responsive drug carriers, this carrier has better microenvironment responsiveness and can more effectively degrade and release therapeutic molecules according to the microenvironment of the lesion site.

The application discloses a preparation method of a high specific capacitance supercapacitor electrode based on carbon materials, which comprises the following steps: mixing carbon materials with sodium alginate or a carboxymethyl cellulose aqueous solution to obtain a slurry; coating the slurry on a substrate to form a slurry film, immersing the slurry film together with the substrate in a crosslinking agent to perform crosslinking, and then separating the hydrogel film from the substrate; cleaning the hydrogel film with distilled water to remove residual crosslinking agent, and then immersing the hydrogel film in an electrolyte to perform electrochemical treatment, so as to obtain a high specific capacitance supercapacitor electrode. The application can widen the electrochemical stable potential window of the carbon materials and the electrolyte by 30% and improve the specific capacitance of the carbon materials by about 100% under the condition that the carbon materials and the electrolyte are used in existing commercial applications, and the preparation method is simple, compatible with existing commercial production lines, and can realize large-scale preparation.

The invention relates to a method for preparing a perovskite wafer based on physical hot pressing and application thereof. According to the method, physical hot pressing assistance and conductive polymer modification methods are adopted, that is, in the process of preparing the FAPbI3 wafer through a mechanical pressing method, an external heating field and conductive polymer modification are synchronously introduced. And the crystallinity of the wafer is improved by the thermal field with proper temperature, and finally the compact perovskite wafer with high crystallinity is obtained. The wafer obtained by the invention can be used for a high-sensitivity near-infrared (NIR) photoelectric detector, and shows excellent photoelectric properties in a near-infrared light band.

The present invention provides a gas sensor and a preparation method, and a method for measuring gas composition and air pressure. The gas sensor comprises: a SrTiO3 substrate, a LaFeO3 film, a LaAlO3 film, an adhesion layer and a back electrode; the SrTiO3 substrate comprises a polished surface and a rough surface; the polished surface is grown with the LaFeO3 film, and the LaAlO3 film is grown on the LaFeO3 film; the rough surface is plated with the adhesion layer and the back electrode, and the back electrode is connected to a temperature control platform. The gas sensor of the present invention has a simple structure and low cost, can work stably at extremely low temperatures (-273°C) to 150°C, and has high application value in extreme environments.

The invention discloses an MOF (Metal Organic Framework) capable of being used for preparing ammonia by electroreduction of a nitrate-containing solution and a preparation method, and belongs to the technical field of nano materials. Comprising the following steps: firstly, treating carbon cloth with a saturated potassium permanganate solution; then adding an organic ligand 2, 3, 6, 7, 10, 11-hexahydroxy triphenylene and cobalt acetate monohydrate into deionized water and N-methyl pyrrolidone, and carrying out ultrasonic treatment to fully disperse the solid medicine in the solution; obliquely putting the pretreated carbon cloth into the mixed solution, transferring into a reaction kettle, carrying out hydrothermal treatment, repeatedly cleaning the surface of the carbon cloth by using deionized water and absolute ethyl alcohol, and drying to obtain the MOF capable of being used for preparing ammonia by electroreduction of a nitrate-containing solution. According to the method, bismuth chloride can also be added into the organic ligand 2, 3, 6, 7, 10, 11-hexahydroxy triphenylene and cobalt acetate monohydrate to prepare Bi-doped MOF. The invention aims to provide the method for preparing the MOF which can be used for preparing the ammonia by electroreduction of the nitrate-containing solution, can be massively produced, has uniform morphology and can be used for preparing the ammonia by electroreduction of the nitrate-containing solution under a hydrothermal condition.

The present invention is a synaptic transistor with long-term synaptic plasticity and a preparation method thereof. The structure of the transistor is: a semiconductor layer is on a substrate, electrodes are provided at both ends of the semiconductor layer, and an ion glue layer is covered on the semiconductor layer between the electrodes; wherein the electrodes are spaced source and drain electrodes; the semiconductor layer is an indium zinc oxide nanowire array and a nafion-graphene quantum dot blended layer covered thereon; during the preparation, graphene quantum dots are added to the nafion film to form a blended structure of graphene quantum dots and nafion, which greatly increases the long-term plasticity of the device. The present invention is a synaptic transistor with long-term synaptic plasticity, which enriches the selection of functional layer materials of synaptic transistors with bionic functions.

The application belongs to the technical field of sodium ion battery cathode materials, and relates to an element non-uniform distribution P2 type layered oxide cathode material, a sodium ion battery, and a preparation method and application. Metal salt solution and doped element salt solution are simultaneously introduced into a reaction kettle in a series connection mode, and react with a mixed alkali solution to obtain an element non-uniform distribution precursor. Then, the element non-uniform distribution precursor is mixed with a sodium source and sintered to obtain the P2 type layered oxide cathode material. The metal salt includes at least one of MnSO4, NiSO4, CuSO4, CoSO4 and FeSO4. The doped element salt solution includes at least one of MgSO4 solution, ZnSO4 solution and Al2(SO4)3 solution. The application realizes the non-uniform distribution of high surface concentration and low body concentration of the doped element through series connection feeding, significantly improves the cycle stability under the premise of reducing the initial capacity loss. The method is simple in process, strong in controllability, and easy to mass produce.

The present application relates to an optical Janus film, a preparation method and its application, wherein the upper and lower surfaces of the optical Janus film have micro-nano structures of different sizes, wherein the micro-nano structures include irregular polymer cones and cone holes formed between the irregular polymer cones; wherein the upper surface has a metal coating. The upper surface of the optical Janus film of the present invention has the characteristic of selective absorption of sunlight, and the lower surface has a radiation heating function. When used for solar water evaporation, it has a dual heat exchange mode of heat conduction and heat radiation, which can improve the utilization rate of sunlight and the heat transfer efficiency; and the optical Janus film of the present application is flexible, applicable to non-flat surfaces, and the preparation method is simple, and large-scale preparation can be achieved.

The invention relates to the technical field of battery materials, in particular to a zinc electrode treatment method and a zinc symmetric button battery preparation method. 1-ethyl-3-methylimidazolium tetrafluoroborate ionic liquid is uniformly smeared on the surface of the zinc foil and is subjected to heat treatment, so that a fluorine functionalized three-dimensional bracket protection layer constructed on the surface of the zinc foil is realized, zinc ions can be guided to be uniformly deposited, and the problems that a traditional zinc metal protection layer is tedious in preparation process, high in cost and hindered in ion diffusion are solved.