30results about How to "Realize controllable adjustment" patented technology

The invention relates to the technical field of lithium ion batteries, in particular to a copper foil, a preparation method thereof, a negative electrode containing the copper foil and a lithium ion battery. The copper foil comprises ultra-fine grains and nano twin crystals, the average grain size is 0.2-0.4 mu m, the area weighted average grain size is 0.3-0.8 mu m, and the proportion of the nano twin crystals in the copper foil is larger than 50%. The copper foil is prepared through a pulse electroplating technology, and the technology can control the average grain size and the proportion of nano twin crystals in the copper foil, so that the copper foil has high tensile strength and high ductility. According to the preparation method of the copper foil, a specific electrolyte is adopted at the same time, the tensile strength of the copper foil can reach 600-900 MPa, and the ductility is larger than 5%. When the copper foil is applied to the lithium ion battery, the volume expansion rate of a negative electrode material after charge-discharge circulation can be reduced, copper foil breakage caused by repeated volume change of the negative electrode material in the charge-discharge process is prevented, the cycle life of the battery is prolonged, and the safety of the battery is improved.

The invention discloses a preparation method of a small-size defective cerium-based MOFs supported metal catalyst for hydrogenation, and belongs to a preparation technology of a nano composite catalytic material. The preparation method comprises the following steps: in a cerium-based MOFs synthesis process, introducing a proper amount of monocarboxylic acid as a regulator to synthesize a cerium-based MOFs carrier with adjustable defects and size, then loading a metal active component to the cerium-based MOFs carrier, and combining adjustment of reduction conditions to prepare the cerium-based MOFs loaded metal composite catalyst with small-size defects for DCPD hydrogenation. The defects and the size of the cerium-based MOFs carrier are effectively regulated and controlled through the monocarboxylic acid regulator, controllable regulation of the electronic state, the size and the catalytic activity of the loaded metal active component can be achieved by combining regulation and control of the reduction condition of the loaded metal nanoparticle active component, the process is simple, parameters are controllable, the period is short, and the method is suitable for DCPD hydrogenation large-scale production.

The invention provides a TC4 titanium alloy thin-wall slender structure liquid cooling plate brazing method, and belongs to the technical field of micro-channel heat exchange. The problems that according to an existing welding method for the TC4 titanium alloy thin-wall long and thin structure liquid cooling plate, the metal brazing connection performance is not stable, a connection interface has defects, and the flatness of the welded thin-wall liquid cooling plate is poor are solved. The thin-wall liquid cooling plate and the slender structural part are buckled and combined, metal foil type brazing filler metal is clamped between the thin-wall liquid cooling plate and the slender structural part to form a TC4 titanium alloy thin-wall liquid cooling plate and slender structural combined part, a graphite pressing block A and a graphite pressing block B are combined and pressed on the TC4 titanium alloy thin-wall liquid cooling plate and slender structural combined part, and after being assembled, the TC4 titanium alloy thin-wall liquid cooling plate and slender structural combined part are put into a vacuum furnace. According to the method, the one-time welding success rate is increased, meanwhile, the brazing seam quality is better, intermetallic compounds of the welding seam are uniform in welding seam microcosmic metallographic display, and the phenomena that the brazing seam is not resistant to pressure and prone to leakage are greatly reduced.

The invention discloses a PtCo ordered alloy material and a preparation method and application thereof. The preparation method comprises the following steps: S1, carrying out defect treatment on a carbon precursor in an active atmosphere to obtain a porous carbon carrier; the active atmosphere is selected from any one of ammonia gas, carbon dioxide and water vapor; s2, performing microwave reaction on a mixture of a platinum source, a cobalt source, the porous carbon carrier and polyol to obtain a PtCo disordered alloy; and S3, the PtCo disordered alloy is subjected to heat treatment in the protective atmosphere, and the PtCo ordered alloy material is obtained. The PtCo ordered alloy material obtained through the preparation method is small in size, the utilization rate of precious metal is high, and the catalytic performance is good.

The invention discloses a multifunctional solid-solid phase change material based on thiolactone chemistry and a preparation method and application thereof, and relates to the technical field of high polymer materials. The method comprises the following steps: dissolving double-bond functionalized thiolactone and acrylate in an organic solvent A, adding a free radical initiator, and reacting to obtain a polymer PTA; dissolving PTA in an organic solvent B, adding aliphatic amine, aliphatic acrylate and a cross-linking agent, and uniformly mixing to obtain a mixed solution; and heating the mixed solution to 60-80 DEG C, and reacting for 1-2 hours to obtain the solid-solid phase change material. The solid-solid phase change material prepared by the invention shows multiple functions of infrared stealth, reversible anti-counterfeiting, shape memory and the like. The integration of the characteristics provides a wide prospect for developing a next-generation high-performance intelligent material.

This invention provides a biomimetic periodontal complex multilayer hydrogel tissue engineering scaffold, its preparation method, and its application, relating to the technical field of tissue engineering scaffolds. The biomimetic periodontal complex multilayer hydrogel tissue engineering scaffold comprises, from the inside out, a cementum repair layer, a periodontal ligament repair layer, and an alveolar bone repair layer; the cementum repair layer and the alveolar bone repair layer include a mineralized hydrogel layer; wherein the raw materials for preparing the mineralized hydrogel layer include modified hyaluronic acid, methacrylamide type I collagen, and hydroxyapatite; the alveolar bone repair layer includes a non-mineralized hydrogel layer; wherein the raw materials for preparing the non-mineralized hydrogel layer include modified hyaluronic acid, methacrylamide type I collagen, and fibrin I. This invention precisely matches the mechanical and biological requirements of each layer of the periodontal complex through a three-layer structure, a reversibly hydrazone-regulated viscoelastic gradient, and a differentiated biochemical microenvironment of nHAp / FBN1.

The invention discloses a structure-enhanced starch-based aerogel capable of improving porosity as well as a preparation method and application thereof, the aerogel comprises enzyme modified starch and natural starch, and the enzyme modified starch is obtained by improving the natural starch by adopting a compound enzyme system composed of multiple amylases. The method comprises the following steps: S1, modifying natural starch through a compound enzyme system to obtain enzyme modified starch; s2, mixing the enzyme modified starch with natural starch in proportion, adding water to form a composite suspension, and performing gelatinization treatment to obtain a gelatinized starch system; and S3, carrying out gelation, freezing and drying treatment on the gelatinized starch system to obtain the aerogel. The aerogel can be applied to thermal insulation materials, adsorption materials, bio-based structural materials or functional porous materials. The molecular structure of the starch is controllably adjusted through the synergistic effect of different enzyme systems, so that the porosity, the structural uniformity and the mechanical stability of the aerogel are remarkably improved on the premise of not introducing a chemical cross-linking agent.

The invention discloses an alcohol disinfectant with a color change indication function and a preparation method, and belongs to the technical field of disinfectants, the alcohol disinfectant is characterized by comprising the following components by weight: 0.1-0.3% (w / v) of a reducing agent, 0.05-0.07 mol / L of an indicator, 0.08-0.12% (w / v) of a reaction aid, 1.6-1.8% (w / v) of a skin care agent, 70% (v / v) of ethanol, and a solvent water; the alcohol disinfectant has the beneficial effects that 1, the alkaline Tibetan red, the glucose and the fatty alcohol-polyoxyethylene ether are used in the alcohol disinfectant, so that the sterilizing effect of the prepared disinfectant is not influenced; 2, the initial liquid is colorless and transparent, becomes red after acting with oxygen in air, and becomes colorless after a period of time; and 3, in a colorless-red-colorless changing process of the disinfectant, the color changing time can be controlled by adjusting the proportion of the disinfectant, so that the disinfectant disclosed by the invention has a relatively good flexible application effect.

The invention relates to the technical field of biomedical materials, in particular to a nano assembly for releasing NO through red light triggering and a preparation method and application of the nano assembly. The nano assembly is prepared from an amphiphilic block polymer with a polyethylene glycol hydrophilic end and a hydrophobic segment containing NO donor molecules and photocatalyst molecules through a hydrophilic and hydrophobic self-assembly forming method. Photocatalyst molecules in the amphiphilic block polymer are excited under irradiation of red light, decomposition of NO donor molecules can be triggered through an electron transfer process, and space-time controllable adjustment of NO release is achieved. The nano assembly has the red light response characteristic, excellent biological safety and antibacterial property, and has a wide application prospect in the aspects of antibiosis, anti-inflammation and the like. In addition, the red light has the characteristics of large tissue penetration depth and low phototoxicity, so that the problem that the penetration depth of the traditional ultraviolet light or blue light response NO donor molecular monomer is limited is effectively solved.

The application discloses a rotor channel rotary positive displacement type liquid pressure energy recovery device, which comprises a sleeve with a cylindrical hollow cavity, a central shaft, a rotor, a flow guide end cover and a sealing end cover arranged in the sleeve, locking pieces are arranged at the length ends of the central shaft, the locking pieces limit the spacing between the two sealing end covers, so that a gap d is formed between the flow guide end cover and the rotor, and rotor channels are arranged on the rotor and take the specific spiral as a reference. Through the structural optimization, the application overcomes the high-precision machining limitation of the existing rotary energy recovery device, reduces the liquid leakage between the end face and the rotor, optimizes the rotor channel structure, improves the stability of the fluid flow in the rotor channel, reduces the rotor vibration, the fastener is a fastening nut, the adjustment of the gap between the rotor and the flow guide end cover can be realized, and the adaptability of different flow / pressure and higher energy recovery efficiency is improved.

The invention discloses an enhanced CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats) / Cas12a electrochemical sensor based on a three-dimensional nano channel electrode limit domain. According to the electrochemical sensor, a three-dimensional nano channel electrode is constructed by utilizing a micro-nano machining technology and a dealloying process, and the pore diameter and the specific surface area of a nano channel are cooperatively regulated and controlled through a thermal annealing method and an electrochemical coarsening method. Based on the three-dimensional confinement characteristic of the three-dimensional nano-channel electrode, the electrochemical sensor efficiently coupled with a CRISPR / Cas12a system is constructed by the sensor. The Cas12a shearing reaction time is successfully shortened to 15 minutes from 2 hours required by a traditional planar electrode, ultra-sensitive detection of HPV-16 nucleic acid is achieved, the sensitivity is improved by about 20 times compared with that of the planar electrode, and the detection limit is as low as 2.8 pM. The sensor provides an efficient, accurate and portable nucleic acid detection solution for the fields of early tumor screening, immediate diagnosis and the like.

This invention belongs to the technical field of additive manufacturing technology and discloses an in-situ oxygen-controlled composite scraper and a laser selective melting device equipped with the in-situ oxygen-controlled composite scraper. The bottom of the composite scraper includes a second scraper (16), an air jet unit, and a first scraper (18) arranged sequentially along the powder spreading direction. It has an internal gas storage chamber (15) and a powder drop chamber (19). The first scraper is used to evenly spread the powder raw material to form an initial powder layer. The air jet unit performs in-situ oxidation treatment on the surface of the initial powder layer by spraying oxygen-containing gas. The second scraper is used to level and compact the powder layer after the in-situ oxidation treatment. This invention improves the composition and structure of the composite scraper and utilizes the overall cooperation of the first scraper, the air jet unit, and the second scraper to generate a synergistic mechanism of powder spreading, in-situ oxidation, and secondary compaction, breaking through the process limitation that it is difficult to construct oxide dispersion-strengthened structures in-situ during additive manufacturing.

The utility model relates to the technical field of welding table structures, in particular to a welding table which comprises a table set, the table set comprises a table frame, fixing base plates are connected to the corners of the left side and the right side of the bottom end of the table frame, adjusting assemblies are movably installed on the left side and the right side of the table frame, and each adjusting assembly comprises a guide rail fixedly connected with the table frame. The outer side of the guide rail is sleeved with a sliding sleeve, and a lifting assembly is arranged on the right side of the sliding sleeve. The output end of the driving motor drives the driving gear to roll on the surface of the rack, then the sliding sleeve is driven to move on the surface of the guide rail, the sliding sleeve moves to control the lifting assembly to move, then position adjustment of a welding machine at the top end of the lifting assembly is changed, and the welding machine can adapt to the welding spot position of a workpiece. The supporting plate is fixed to the outer side of the sliding sleeve, the supporting plate can be pushed through stretching and retracting of the output end of the hydraulic cylinder, and then the welding mechanical equipment is pushed and adjusted through the supporting plate.

The utility model discloses a high degree of finish rice mill for rice processing, including shell, conduction cylinder and feed bin, the top one side of shell is communicated with conduction cylinder, the middle of conduction cylinder is connected with rotating shaft through bearing, the outer surface of rotating shaft is wound with spiral impeller, one side of conduction cylinder is provided with drive motor, and the feed bin is provided with feed bin. The output end of the driving motor is connected with the rotating shaft, the feeding bin is arranged on one side of the top of the conduction cylinder, a magnetic filter plate is arranged at the bottom of the feeding bin, a whitening chamber is arranged in the middle of the shell, the bottom end of one side of the whitening chamber communicates with a feeding pipeline, and a polishing roller is arranged at the bottom end of the feeding pipeline. The rotating shaft rotates to drive the spiral impeller to rotate, the spiral impeller rotates to conduct brown rice, controllable adjustment of brown rice feeding is achieved, the polishing roller rubs with rice through the physical effect, residual bran on the surface of the rice is removed, the rice is cleaner, and the smoothness of the surface of the rice is improved.

The utility model relates to orthopedics medical instrument technical field especially sawtooth half sleeve. The half sleeve includes half sleeve and handle, and the half sleeve includes tip, multistage sawtooth structure and half sleeve main part, and the tip is gradually expanded from left to right smoothly, and the width between multistage sawtooth structure is increasing from left to right, and the half sleeve main part is'U' elongated from left to right, handle is set up in the right end of half sleeve main part. The utility model takes minimally invasive surgery as application scene, through the shape design of half sleeve, can block the exit root, reduced the possible of nerve injury, improved the security of operation, in operation through rotating half sleeve, through tip and multistage sawtooth structure enter in turn, enlarge the intervertebral space, multistage sawtooth structure can gradually expand the opening, realize the controllable regulation of intervertebral space, solved the problem of large interbody fusion cage implantation under the condition of unable to enlarge intervertebral space in minimally invasive surgery, half sleeve can provide implantation guiding positioning in operation, improved the accuracy of interbody fusion cage placement.

The invention discloses ultra-black carbon powder with infrared / visible light dual-band absorption performance and a morphology-controllable preparation method and application thereof. The invention belongs to the field of preparation of ultra-black carbon powder. The invention aims to solve the technical problems that the existing ultra-black carbon powder is complex to prepare and high in production cost, and the performance needs to be improved. The method comprises the following steps: firstly, respectively dissolving melamine and cyanuric acid in dimethyl sulfoxide or ethylene glycol, then dropwise adding a melamine solution into a cyanuric acid solution, and stirring for reaction or stirring for reaction under a heating condition to obtain a hydrogen bond organic framework; and adding the hydrogen bond organic framework into an absolute ethyl alcohol solution of phenolic resin, stirring for reaction, centrifuging, drying a solid product, and calcining in a protective atmosphere to obtain the ultra-black carbon powder. The method is simple in process and low in cost. The obtained ultra-black carbon powder is adjustable in structure, stable in performance, good in dispersity in high-molecular organic rubber and high in machinability. The material is used for absorbing visible light and infrared waves.

The application relates to an intelligent bidirectional stress adjusting external fixing support, an adjusting rod, a sliding matching shaft sleeve, a connecting screw sleeve, a fixed rod screw sleeve, a fixed rod, a cable transmission assembly, an electric drive assembly and a controller. One end of the fixed rod is connected to the sliding matching shaft sleeve, the sliding matching shaft sleeve is slidably sleeved on the adjusting rod, and the lower end of the sliding matching shaft sleeve is tightly connected with the connecting screw sleeve. The lower end of the connecting screw sleeve is threadedly connected with the fixed rod screw sleeve, and the fixed rod screw sleeve is fixed to the fixed rod through a pin. The electric drive assembly is connected with the adjusting rod through the cable transmission assembly, and the controller is connected with the electric drive assembly. The adjusting rod and the fixed rod are connected to fix a bone segment. The controller can drive the cable transmission assembly to pull the adjusting rod to slide along the axial direction of the adjusting rod through the electric drive assembly, and the adjusting rod is away from or close to the fixed rod, so that axial stress is given to a fracture end. The application has the beneficial effects that the automatic regulation and control of the stress of the fracture end are realized, manpower is saved, the safety and compliance in the treatment process of patients are improved, and key technical support is provided for the precise development of the treatment of the orthopedic external fixing support.

The present invention relates to a photochargeable homojunction electrode based on a water-soluble carbon-rich carbon nitride polymer, and a preparation method and application thereof, and belongs to the field of solar photovoltaic conversion and storage technology. The present invention provides a photochargeable homojunction electrode based on a water-soluble carbon-rich carbon nitride polymer, which is composed of a substrate layer, an electron transport layer, and a homojunction layer from bottom to top. The carbon-rich carbon nitride CNx and the carbon-rich carbon nitride CNy used to construct the homojunction layer are water-soluble, and the dispersibility is improved, which helps to form an effective interface; at the same time, the two are isomers, and have the dual functions of photoelectric conversion and charge storage. The structural matching helps to form a closely contacted homojunction, and the built-in electric field of the internal interface of the homojunction separates the photogenerated electron holes, which can realize the electronic cycle of the battery itself, without adding an electron sacrificial agent to the electrolyte. The battery prepared with the electrode can obtain a capacity of 200 to 500C / g under AM1.5 solar irradiation.

The invention discloses an engine combustion state adjusting method, device and equipment and a storage medium, and relates to the technical field of engine combustion. An engine comprises a body, an electromagnet arranged outside a fuel nozzle and a first discharge port arranged outside a combustion chamber; the adjusting method comprises the steps that the current temperature of an engine and the current tail gas concentration of a tail exhaust port are obtained; determining an adjustment strategy corresponding to the current combustion state of the engine according to the current temperature and the current tail gas concentration; and the currents of the electromagnet and the first discharge port are controlled based on the adjustment strategy, so that the combustion state of the engine is adjusted through the magnetic field and / or the electric field generated by the electromagnet and the first discharge port. In this way, the magnetic field intensity and the electric field intensity of the fuel oil atomization stage and the premixed combustion stage can be adjusted in a targeted mode through the electromagnet and the discharge port, in this way, the combustion efficiency of the engine can be affected, and the combustion state of the engine can be controllably adjusted.

The application discloses a method for removing organic pollutants in water bodies by activating persulfate, and comprises the following steps: adding a metal precursor into a solvent to obtain a metal precursor solution; adding an organic ligand into the solvent to obtain a ligand solution; adding the ligand solution into the metal precursor solution and adding an additive to react, and after the reaction is completed, post-treatment is performed to obtain a conductive coordination polymer containing metal-nitrogen active sites; and the conductive coordination polymer and the persulfate are put into the water body containing the organic pollutants to complete degradation of the organic pollutants. The conductive coordination polymer containing the metal-nitrogen active sites is used as a catalyst, high-density and active center coordination configuration adjustable metal-nitrogen active sites are used to efficiently activate the persulfate, and the purpose of quickly removing the organic pollutants in the water bodies is achieved.

The invention relates to the technical field of optical modulation elements, in particular to a dual-band optical modulation material and preparation and application of an element of the dual-band optical modulation material. According to the specific technical scheme, the preparation method of the dual-band optical modulation material comprises the steps that tungsten oxide, molybdenum oxide and hydrated sodium tungstate are mixed and ground, Mo-doped two-dimensional tungsten nitride is obtained through high-temperature annealing in the ammonia atmosphere, and after tungsten salt is removed, Mo and N co-doped tungsten oxide is obtained after nitric acid oxidation. According to the invention, the Mo and N co-doped WO3.xH2O is successfully prepared by adopting an in-situ oxidation mode of a metal nitride. An optical modulation element is assembled by using the polymer as an electrochromic layer and FTO as an ion storage layer. Compared with a traditional electrochromic element, independent regulation and control of visible light and near-infrared light are achieved.

The invention discloses an adjustable light field leading-out method and system based on a hollow-core anti-resonance optical fiber, and relates to the technical field of optical energy transmission, and the method comprises the steps: employing the hollow-core anti-resonance optical fiber with a five-tube nested structure and multiple layers of anti-resonance air rings; a geometric opening is formed in the outer diameter area of the cladding of the hollow-core anti-resonance optical fiber, so that a lateral leading-out port is formed; establishing an optical fiber electromagnetic model comprising the port through finite element simulation, and adjusting structural parameters of the lateral leading-out port in simulation; and determining a group of optimized structure parameters based on the finite element simulation, so that the port can directionally couple specific light field mode energy conducted in the fiber core to the outside of the optical fiber at a predetermined efficiency when locally disturbing a cladding anti-resonance condition. Lateral efficient and controllable leading-out of an optical field in the hollow-core anti-resonance optical fiber is achieved, good mode selectivity is achieved while low-loss transmission is achieved, and the hollow-core anti-resonance optical fiber is suitable for a high-density optical interconnection and sensing system.

The application provides a kind of for the material surface interface damage in-situ characterization environment bin of multi-factor coupling corrosion, it is related to in-situ detection equipment technical field, to solve the technical problem that cannot simulate marine atmospheric corrosion environment and provide in-situ test condition for sample in prior art;A kind of for the material surface interface damage in-situ characterization environment bin of multi-factor coupling corrosion, simulates the marine atmospheric corrosion environment of high humidity, high salt, temperature and other multi-factor coupling, wherein, salt fog generating device simulates the salt fog condition in marine atmosphere, laser heating module provides controllable thermal field, corrosion resistant loading platform provides controllable force field, so as to realize the simulation of thermal, salt, force multi-field coupling corrosion;At the same time, high temperature electrochemistry module can carry out in-situ monitoring of corrosion electrochemistry, X-ray entrance window and X-ray exit window allow X-ray diffractometer to carry out diffraction test, observation module directly carries out in-situ observation of corrosion, realizes the composite in-situ characterization technology under multi-factor simulation working condition.

This application discloses a palladium-hydrogen rare earth nanoalloy material, its preparation method, and its application. The palladium-hydrogen rare earth nanoalloy material includes a carbon support and PdREH nanomaterials loaded on the surface of the carbon support. x Nanoparticles, PdREH x The nanoparticles comprise an alloy of Pd and rare earth elements (RE), and hydrogen embedded in the alloy lattice; wherein the rare earth element RE is one of Y, Ce, Sm, Gd, and Tb. This application constructs a nanoalloy material with a stable lattice structure and good hydrogen intercalation capability by forming an alloy of palladium and rare earth elements and further intercalating hydrogen. Simultaneously, by combining a carbon support with a two-step Joule thermal-hydrothermal preparation process, the composition and structure of the material can be controllably adjusted. This material exhibits excellent electrochemical response sensitivity, high ethylamine production capacity, and high Faradaic efficiency in the acidic electrocatalytic hydrogenation of acetonitrile to ethylamine reaction, making it suitable for low-resistance proton exchange membrane devices.

The invention discloses a bent hole inner surface polishing and strengthening treatment device and method. External controllable square planar magnetic fields are placed on the front side, the rear side, the left side and the right side of a to-be-ground workpiece with a bent hole, and an external controllable annular magnetic field surrounds the periphery of the to-be-ground workpiece with the bent hole as the center; the soft magnetic grinding head is formed by detachably connecting multiple stages of grinding heads in series front and back through rotary connecting pieces, the innermost part of each stage of grinding head is provided with an air bag, the outer surface of the air bag is tightly attached to an internal framework, the outer surface of the internal framework is tightly attached to a magnetic carrier layer, and an abrasive particle layer is embedded in the outer surface of the magnetic carrier layer. The particles of the abrasive particles on the front-stage grinding head are larger than the particles of the abrasive particles on the rear-stage grinding head; active bending of the grinding head in the stretching-in process and expansion from inside to outside in the grinding process are achieved, rough grinding, accurate grinding and polishing are conducted from front to back, the grinding state is maintained through inflation, the abrasive particle layer is separated from the hole wall through deflation, and controllable adjustment of the grinding area is achieved.

The invention discloses a high-transmissivity amorphous zinc nitride film and a preparation method thereof, and relates to the technical field of semiconductor film materials.The preparation method comprises the following steps that firstly, a quartz substrate is selected as a substrate, metal zinc is selected as a sputtering target material, the distance between the substrate and the target material is adjusted, and a vacuum cavity cover is covered; vacuumizing, heating the substrate, introducing nitrogen and argon into a vacuum cavity, and pre-sputtering the metal zinc in a radio frequency magnetron sputtering mode without opening a target baffle; opening a target baffle, performing radio frequency magnetron sputtering on the pre-sputtered metal zinc, and depositing a zinc nitride film on the substrate; and finally, carrying out cooling treatment to obtain the amorphous zinc nitride film. According to the high-transmissivity amorphous zinc nitride film and the preparation method thereof, key parameters such as sputtering air pressure are controlled within a specific range, the growth kinetics of the film is effectively regulated and controlled, and the average transmissivity of the prepared amorphous zinc nitride film in a visible-near infrared light region is as high as 73%-86.6%.

The application discloses a kind of sodium ion battery high-entropy prussian blue-based positive electrode materials and preparation method thereof, it is related to battery positive electrode material technical field.The chemical formula of positive electrode material is Na x M[Fe(CN)6], wherein, 0≤x≤2;The M includes five and more than five transition metal elements.The present application controls the nucleation and growth rate of the material by complexing agent assisted coprecipitation method, adjusts the hydration tendency of N-coordinated metal ions by high-entropy composition, and further realizes the direct controllable synthesis of low-content anion defect and coordination water molecules of high-entropy prussian blue-based positive electrode material;In addition, low defect, high-entropy stability and multi-element synergistic effect can effectively inhibit the complex sodium ion storage phase change behavior and serious Jahn-Teller effect in the charging and discharging process, so as to achieve the effect of stabilizing the crystal structure of the material, and obtain high-entropy positive electrode material with high energy density, high power density and long cycle life.

The application discloses a preparation method of a sulfur-selenium antimony sulfide material for a sodium ion battery negative electrode. The sulfur-selenium antimony sulfide material is prepared by a hydrothermal reaction combined with high-temperature sintering with antimony oxide powder, sulfur powder and selenium powder as raw materials, and the composition of the material can be controlled by adjusting the proportion of sulfur and selenium. The method is simple in operation and good in repeatability, and the obtained material is stable in structure and can be used as a sodium ion battery negative electrode material.

The invention relates to the technical field of textile fabrics, in particular to a cationic double-color small check fabric which comprises a breathable perspiration layer, a base cloth layer, a cationic functional layer and a wear-resistant anti-ultraviolet layer which are sequentially arranged from inside to outside. The production equipment for the cationic double-color small-grid fabric comprises an outer cylinder, the inner portion of the outer cylinder is hollow, sliding grooves are formed in the side wall of the outer cylinder in the circumferential direction, sliding blocks and elastic pieces are arranged in the sliding grooves, the elastic pieces are used for supporting the sliding blocks to abut against the other ends of the sliding grooves, the sliding blocks are provided with blocking pieces stretching into an inner cavity of the outer cylinder, and the sliding blocks are provided with yarn guide rings stretching out of the outer cylinder; the axis of the yarn guide ring is parallel to the axis of the outer cylinder; and the mandrel is coaxially and rotatably arranged in the inner cavity of the outer cylinder, and the surface of the mandrel is provided with a shifting piece used for shifting the blocking piece in the generatrix direction. According to the cation double-color small check fabric and the production equipment thereof, the yarn arrangement uniformity and regularity of the cation double-color small check fabric of a multi-layer structure are improved, and the fabric quality is improved.

This invention provides a Y-doped AB2-based hydrogen storage alloy material resistant to humid air poisoning and its preparation method, belonging to the technical field of hydrogen storage materials. The general chemical formula of the Y-doped AB2-based hydrogen storage alloy material of this invention is: (Ti a Zr b ) c Cr d Mn e V f + x wt.%Y, where a, b, c, d, e, and f are molar ratios. x The values ​​are by weight percentage. The Y-doped AB2-based hydrogen storage alloys of this invention retain over 85% of their hydrogen storage capacity after humid air poisoning, existing in elemental Y form. In contrast, the capacity retention rates of undoped hydrogen storage alloys and AB2-based hydrogen storage alloys existing in the form of Y2O3 are 68% and 69.22%, respectively, after humid air poisoning. This invention features a mature and convenient preparation process, exhibits excellent resistance to humid air poisoning, and helps to extend the service life of hydrogen storage materials in gas-solid composite hydrogen storage devices.