73 results about "Porous oxide" patented technology

The invention provides a composite electrolyte film and a preparation method thereof and a secondary battery, and belongs to the field of lithium battery, the composite electrolyte film comprises a polymer matrix, and a lithium salt and a composite material distributed in the polymer matrix, the composite material comprises a porous oxide solid electrolyte and a halide solid electrolyte filled in pores of the porous oxide solid electrolyte. The invention aims to provide the solid electrolyte with high ionic conductivity, wide electrochemical window and good mechanical property.

The invention relates to the technical field of brass materials, in particular to a high-strength and high-toughness brass material and a preparation method thereof.The preparation method comprises the steps that a porous oxide film layer is prefabricated on the surface of brass through plasma electrolytic oxidation, and an oxide film layer doped with double-bond silver-loaded graphene oxide is constructed on the surface of the brass; the preparation method comprises the following steps: firstly, preparing modified MXene, then preparing a photocurable hole sealing coating for hole sealing treatment, introducing double-bond silver-loaded graphene oxide and the modified MXene as fillers into the photocurable hole sealing coating, firstly performing sulfhydrylation on the MXene by using 3-mercaptopropyltriethoxysilane, and then grafting a double-bond-containing bis-benzimidazole ring derivative through light click to obtain the modified MXene; vinyl-terminated polyurethane is used as a cross-linking agent, o-phenyl phenoxyethyl acrylate, butyl acrylate, glycidyl methacrylate and octadecyl acrylate are compounded to serve as an acrylic monomer, a diluent and a solvent are introduced, a complex cross-linked network is constructed, and the service life of the brass material is prolonged.

The invention belongs to the technical field of aluminum alloy materials, and particularly relates to a colored aluminum anode oxide film and a preparation method thereof. Aluminum is sequentially subjected to electrochemical polishing and anodic oxidation to obtain an aluminum anodic oxide film, then the aluminum anodic oxide film is immersed in an azo precursor solution, and a red azo dye is synthesized in situ in pores of the porous oxide film through an azo reaction between diazonium salt and benzene sulfonate, so that coloring of the aluminum oxide film is completed. By synthesizing sulfonic acid modified alendronate and compounding the sulfonic acid modified alendronate to form the electrochemical polishing solution, the electrochemical polishing quality of the surface of an aluminum sheet can be effectively improved. An electrolyte additive with phosphate groups, carboxyl groups and alcohol amino groups at the same time is used for anodic oxidation, a porous oxidation film with the appropriate pore size is formed, finally, an azo precursor of a specific structure is screened, loading fixation of azo dye on the porous film is further improved by means of sulfonic acid groups on azo molecules, and the stability of the anode is improved. And the aluminum oxide film with a good coloring effect is obtained.

A method for preparing a two-dimensional porous oxide belongs to the technical field of porous oxide preparation. The method includes the following steps: (1) using a metal salt as a precursor, an ion-intercalated two-dimensional oxide is prepared by a molten salt method; (2) the ion-intercalated two-dimensional oxide is mixed with a lithium initiator, reacted for a predetermined time, and then the unreacted lithium initiator is removed, filtered, and washed to obtain the two-dimensional porous oxide. The two-dimensional porous oxide prepared by this method forms uniform pores with a pore size range of 2-10 nm and a specific surface area of ​​200-300 m². 2 / g.

The present invention relates to a rechargeable and dischargeable battery and a photorechargeable battery based on bismuth material, which sequentially comprises an FTO conductive substrate, an electron transport layer, a photoelectric active layer based on Bi, and a platinum or carbon counter electrode. The electron transport layer is composed of a dense layer of porous oxide and a mesoporous layer of porous oxide, and the porous oxide is TiO2, SnO2, ZnO or Sb2O5. The rechargeable and dischargeable battery can be charged using sunlight, converting light energy into electrical energy for storage, and powering electrical devices in the dark state. The present invention expands the electroactive material system of secondary batteries and provides a solid-state two-electrode photorechargeable battery device, which will greatly promote the practical application of photorechargeable battery devices.

The invention discloses a solid electrolyte composite material as well as a preparation method and application thereof. The solid electrolyte composite material comprises an oxide solid electrolyte with a porous structure and an electron conduction material, wherein the electron conduction material comprises granular thermal decomposition carbon and reduced graphene oxide; wherein the electron conduction material is distributed in pores of the oxide solid electrolyte, and / or, at least part of the electron conduction material is embedded in the oxide solid electrolyte, and / or, the electron conduction material is distributed on part of the surface of the oxide solid electrolyte. High-conductivity reduced graphene oxide is obtained through heat treatment reduction, the material has the effect of conducting lithium ions and electrons at the same time, the porous oxide solid electrolyte material with the high specific surface can increase the contact area and increase a conduction path for ion migration, and the electrode reaction kinetics is effectively accelerated through the combined action of the two materials; and meanwhile, good rate capability and low-temperature performance are realized.

The present disclosure relates to a porous catalyst including an oxide matrix structure having mesopores and micropores, and metal nanoparticles embedded in the oxide matrix structure, wherein the metal nanoparticles of the porous catalyst have residual compressive stress.

To provide a method for producing higher silanes that has high selectivity for disilanes even when a lower silane and a catalyst are reacted for a long time.　The present invention includes a method for producing higher silanes in which a porous oxide and a lower silane are brought into contact to convert the lower silane into a higher silane having more silicon atoms, wherein the higher silanes include disilanes, the estimated reaction time is from more than 200 hours to 10,000 hours, the temperature at which the porous oxide and lower silane are brought into contact is 100-400°C, and the retention time represented by formula (1) is from 5 seconds to less than 80 seconds.　Retention time [sec] = amount of porous oxide [L] × ((pressure [MPaG] + 0.101325) / 0.101325) × (273.15 / (temperature [°C] + 273.15)) × (3600 / amount of gas supplied [NL / h]) … (1) (In formula (1), the amount of porous oxide represents the amount of porous oxide brought into contact with the lower silane, the pressure and temperature each represent the pressure and temperature at which the porous oxide and lower silane are brought into contact, and the amount of gas supplied is the amount of raw material gas containing the lower silane supplied per unit time during contact with the porous oxide.)

The present invention relates to a pump, in particular a vacuum pump, comprising a pump-active component having a coating, wherein the coating comprises an oxide layer, which is in particular formed by anodic oxidation in an acidic electrolyte and which has pores, and a fluorine-free polymer-based and / or sol-gel-based sealing, and wherein the pores of the oxide layer are at least partly covered by the sealing and / or impregnated with the sealing and / or filled with the sealing. The present invention further relates to a method of sealing a porous oxide layer.

A metal-plastic composite structure, a preparation method therefor, and a use thereof. The metal-plastic composite structure comprises a first metal layer and a second metal layer which are stacked, and satisfies at least one of the following: comprising a first transition oxide film layer, a first porous oxide film layer and a first plastic layer which are sequentially stacked on the surface of the first metal layer that is not attached to the second metal layer, and a second transition oxide film layer, a second porous oxide film layer and a second plastic layer which are sequentially stacked on the surface of the second metal layer that is not attached to the first metal layer; the first metal layer and the second metal layer being metal layers of different materials; the porosity of the first transition oxide film layer being less than that of the first porous oxide film layer; and the porosity of the second transition oxide film layer being less than that of the second porous oxide film layer.

The invention provides a local ion nitriding method for a titanium alloy barrel, and belongs to the technical field of titanium alloy surfaces.The local ion nitriding method comprises the steps that an anti-seepage tool is prepared according to the size and shape of a non-nitriding area of the titanium alloy barrel; carrying out micro-arc oxidation treatment on the attached shielding surface of the anti-seepage tool; performing hole sealing treatment on the anti-seepage tool subjected to micro-arc oxidation treatment; and the hole-sealed anti-seepage tool is installed in a non-nitriding area of the titanium alloy barrel, ion nitriding treatment is conducted on the titanium alloy barrel where the anti-seepage tool is installed, the anti-seepage tool is dismantled, the titanium alloy barrel subjected to local ion nitriding is obtained, and micro-arc oxidation and hole sealing treatment are conducted on the attached shielding face of the anti-seepage tool, so that the anti-seepage performance of the titanium alloy barrel is improved. Boron nitride with a lubricating effect is generated on the surface of the porous oxidation film, the situation that the anti-seepage tool and the workpiece cannot be detached due to adhesion is prevented, the anti-seepage tool is beneficial to reducing the deformation tendency of the barrel, and the anti-seepage method is convenient to operate, environmentally friendly, free of pollution and wide in applicability.

This application relates to the field of aircraft structural design technology, and more particularly to a folding tail boom structure for a single-rotor helicopter with a tail rotor, including a fuselage, a tail boom, and a folding assembly disposed at the connection between the fuselage and the tail boom. The folding assembly includes a front folding frame and a rear folding frame, with the front folding frame fixedly connected to the tail of the fuselage and the rear folding frame fixedly connected to the front end of the tail boom. The front and rear folding frames are rotatably connected by at least one set of shoulder screws, forming a folding rotating pair. This invention provides a porous oxide film layer formed by phosphoric acid anodizing at the connection interface between the front and rear folding frames and the fuselage / tail boom, combined with structural adhesive bonding, riveting mechanical fixation, and end face screw locking, forming an interconnected four-fold fixing structure. At the same time, the porous oxide film layer significantly improves the roughness and chemical activity of the bonding interface, greatly enhancing the bonding strength and effectively solving the problem of loosening of traditional quick-release pin connections under heavy loads.

This invention provides a method for preparing and applying two-dimensional porous oxide nanosheets with compressive strain, belonging to the field of electrochemical technology. The invention involves grinding and mixing mannose, lysine, and a metal salt, followed by Joule heat treatment of the mixture to induce a non-enzymatic browning reaction, thereby preparing compressively strained porous oxide nanosheets. These materials possess abundant porous structures, and the co-doping of rare earth elements and transition metals induces lattice compressive strain in CeO2 and generates abundant oxygen vacancies. The synergistic effect of lattice compressive strain and increased oxygen vacancy concentration effectively improves the stability of the catalyst and the activity of HER (hydrochemical reaction).

This invention relates to the field of brass material technology, specifically a high-strength, high-toughness brass material and its preparation method. A porous oxide film is pre-formed on the brass surface through plasma electrolytic oxidation. A double-bonded silver-loaded graphene oxide-doped oxide film is then constructed on the brass surface. A photocurable sealing coating is then prepared for sealing. In the photocurable sealing coating, double-bonded silver-loaded graphene oxide and modified MXene are introduced as fillers. MXene is first thiolated with 3-mercaptopropyltriethoxysilane, and then grafted with a double-bonded dibenzimidazole ring derivative via photo-clicking to obtain modified MXene. A vinyl-terminated polyurethane is used as a crosslinking agent, and a complex crosslinking network is constructed using a blend of o-phenylphenoxyethyl acrylate, butyl acrylate, glycidyl methacrylate, and octadecyl acrylate as acrylic monomers. A diluent and solvent are introduced to extend the service life of the brass material.

The application discloses a preparation method of intermetallic compound modified lithium ion battery negative electrode material. (96‑x) Ni4Fe x The method comprises the following steps: in the first step, Al, Ni and Fe ingots are melted into Al Ni4Fe x intermediate alloy ingots by using a vacuum arc melting furnace at 1650-1800 DEG C, and then a precursor strip is obtained by melt spraying; in the second step, the precursor strip is ball milled to obtain a precursor powder with a particle size of 1-3 microns; and in the third step, the precursor powder is immersed in a NaOH solution for 6-8 hours to obtain a Ni3Fe / Ni / NiO lithium ion battery negative electrode material. Compared with the previous material, the nano-porous oxide prepared by the application has higher porosity and larger specific surface area, and can more effectively alleviate the problem of the deterioration of electrochemical performance caused by the volume change of the active material in the charging and discharging process.

The invention discloses a hydrophilic photocatalyst of a liquid CO2 and water double-liquid-phase catalytic system as well as a preparation method and application of the hydrophilic photocatalyst. The hydrophilic photocatalyst is prepared from a porous oxide carrier, a semiconductor matrix and a metal additive, the porous oxide carrier is selected from one of a hydrophilic molecular sieve, a SiO2 nanotube and mesoporous Al2O3 and accounts for 0-90% of the total mass of the catalyst; the semiconductor substrate is selected from at least one of ZnO, CeO2, C3N4 and TiO2 and accounts for 10%-100% of the total mass of the catalyst; the metal additive is selected from at least one of Au, Pt, Pd, Ru, Ag, Cu and Fe, is loaded in the form of monatomic and / or nano-particles, and accounts for 0.1-5% of the total mass of the catalyst. Compared with a traditional water phase system, the hydrophilic photocatalyst is improved by more than 300%, the total selectivity of a product reaches 90% or above, the stability of the catalyst is remarkably enhanced, the catalyst can be used in selective oxidation reaction of ethane, methanol or ethanol, the dual functions of taking CO2 as a reactant and a solvent are achieved, and the economical efficiency and the environmental protection property are improved.

This invention provides a method for efficiently producing aliphatic aldehydes by oxidizing aliphatic primary alcohols having four or more carbon atoms. [Solution] A method for producing an aliphatic aldehyde, comprising the step of oxidizing an aliphatic primary alcohol having 4 or more carbon atoms with molecular oxygen in the presence of a ruthenium-supported catalyst, The ruthenium-supported catalyst comprises ruthenium supported on a carrier, The aforementioned support is a porous oxide, The surface area per unit mass of ruthenium is 60 m². 2 / g or more The mesopore volume of the ruthenium-supported catalyst is 0.15 mL / g or more. A method for producing aliphatic aldehydes.

The invention discloses a focused ion beam sample preparation method for reducing a curtain effect of a porous transmission sample, and relates to the technical field of material analysis. According to the method, for a porous oxide film sample, the problem of a curtain effect of a porous structure in focused ion beam thinning is solved by executing sample table rotation-tilting angle regulation and directional platinum protection layer deposition on Helios 5CX equipment; the method specifically comprises the steps of sample pretreatment, preliminary thinning, porous structure identification, rotation-tilting-selective coating, recovery angle thinning and sample purging. Compared with a traditional method, the method has the advantages that the curtain effect degree is obviously reduced, the preparation success rate reaches 80% or above, the integrity rate of the pore structure is kept to be higher than 95%, and the method is suitable for transmission electron microscope sample preparation of high-temperature oxidation porous samples such as nuclear material cladding and aero-engine blade coatings and has important engineering application value.

The invention discloses an aluminum alloy conductor and a cable produced by using the method. The method comprises the following steps of: performing polishing and grinding and inert atmosphere protection pretreatment on the aluminum alloy conductor; performing two-step anodic oxidation to form a gradient ceramic layer; applying a fluorosilane self-assembled molecular film; sequentially constructing a composite barrier consisting of an epoxy bonding layer, a polyimide isolating membrane and a fluorine-containing acrylate functional layer; and finally, an adaptive inner screen material extruding and cooling process is carried out. The gradient ceramic layer is formed through two-step anodic oxidation, in the first step, a porous oxide layer is formed in phosphoric acid electrolyte, and in the second step, a compact closed oxide layer is formed in sulfuric acid electrolyte. According to the aluminum alloy conductor composite protection method, the anti-adhesion effect is lasting, the electrical performance is reliable, the process compatibility is high, the aluminum alloy conductor is not adhered to the extruded inner screen material, and the service life of the cable is long.

The invention discloses a lithium ion battery diaphragm, a preparation method and a battery thereof, the lithium ion battery diaphragm comprises a base membrane and a composite ceramic coating coated on the surface of the base membrane, the composite ceramic coating comprises a ceramic material and a porous oxide, the mass ratio of the ceramic material to the porous oxide is 1: 2-1: 4, the ceramic material comprises at least one of LLTO, LLZO and LAGP, and the porous oxide is a porous oxide. The porous oxide comprises at least one of Al2O3, ZrO2 and AlOOH, and the preparation method comprises the following steps: S1, mixing the ceramic material and the porous oxide according to a mass ratio to obtain first powder; s2, preparing bottom layer slurry; s3, preparing surface layer slurry; and S4, the two faces of the base membrane are sequentially coated with the bottom layer slurry and the surface layer slurry, drying is conducted after coating is completed, the lithium ion battery diaphragm is obtained, a lithium battery comprises a positive plate, a negative plate, the lithium ion battery diaphragm, a current collector and an electrolyte, and the cycle life of the battery is prolonged.

The invention discloses a silicon-carbon negative electrode composite material and a preparation method and application thereof, and relates to the technical field of negative electrode materials, the silicon-carbon negative electrode composite material comprises a conductive carbon material, deposited silicon and a porous oxide solid electrolyte with a porous structure; wherein part of the conductive carbon material is distributed in a porous structure of the porous oxide solid electrolyte, and the rest of the conductive carbon material is distributed on the surface and / or in the silicon-carbon negative electrode composite material; the preparation method comprises the following steps: uniformly mixing the oxide solid electrolyte, the sintering aid and the pore-forming agent in a solvent in a ball milling manner to obtain mixed slurry; carrying out freeze drying on the mixed slurry, carrying out heat treatment in an inert atmosphere, then adding the mixed slurry into a fluidized bed reactor, and introducing silicon source gas to carry out primary chemical vapor deposition to form deposited silicon; carbon source gas is introduced for secondary chemical vapor deposition, and a conductive carbon material is formed; the silicon-carbon negative electrode composite material with excellent electrochemical performance is obtained.

This invention provides a method for preparing a syngas-to-higher alcohols catalyst with a hierarchical pore structure. The preparation method includes: loading an aqueous precursor of the active component ruthenium onto a porous oxide support, and drying it to obtain a catalyst powder precursor; mixing the catalyst powder precursor with a binder, an extrusion aid, PMMA microsphere powder, and water, and mechanically kneading it to form a plastic slurry; extruding the plastic slurry into a wet catalyst preform; drying the wet catalyst preform and calcining it to obtain a shaped Ru-based catalyst with a two-level pore structure of macropores and mesopores. The catalyst prepared by this method achieves a total alcohol selectivity of over 40% in the one-step synthesis of higher alcohols from syngas, and C... 6+ The selectivity of higher alcohols in the total alcohol products reaches over 60%, while maintaining a high CO conversion rate.

This invention provides a porous oxide composite material, a silicon-carbon composite material, a preparation method, an application, and a battery. The preparation method includes the following steps: (1) heating a mixture containing pulverized molecular sieve, phenol source, formaldehyde, and catalyst to obtain molecular sieve-phenolic resin composite spheres; (2) deforming the molecular sieve-phenolic resin composite spheres under external force to obtain a non-spherical molecular sieve-phenolic resin composite material; (3) heating and curing the spherical molecular sieve-phenolic resin composite material under an inert atmosphere, followed by carbonization to obtain the porous oxide composite material. The porous oxide composite material prepared by this invention can effectively increase the contact area between particles while maintaining a high compaction density, thereby improving the material's electrical conductivity, rate performance, and cycle performance.

The present disclosure contemplates an optical device that comprises a low refractive index layer that comprises a porous oxide material. The optical device may further comprise at least one additional layer comprising a second material. The optical device may comprise an ultra-low refractive index layer that comprises a porous dielectric material. Such a device may have strong angle-dependent spectral responses, including structural color devices that may produce highly iridescent and angle variable color output. In other aspects, a device is provided that comprises a first layer or region comprising a porous material comprising silicon dioxide (SiO2), which may be an aerogel or formed via glancing angle deposition (GLAD). The device may also comprise at least one additional layer or region comprising a dielectric material or a metal.

The invention relates to the technical field of electrophoretic coatings, in particular to an anticorrosive coating as well as a preparation method and application thereof. The anticorrosive coating comprises: a porous oxide layer; the porous oxide layer is obtained by performing surface oxidation treatment on the surface of the metal base material by using an anodic oxidation liquid medicine; or the porous oxide layer is formed on the surface of the metal base material through electrolysis of the metal base material; the closed body is formed on the surface of the porous oxide layer; the closed body is obtained by performing surface closing treatment on the porous oxide layer by using a closing liquid; the confining liquid comprises a second acid solution, a second additive, an organic solvent and water; and the electrophoretic coating is formed on the closed body. The anti-corrosion coating has excellent adhesive force on a metal base material, and the adhesive force after aging is also excellent; in addition, the anticorrosive coating has excellent corrosion resistance, and especially has excellent electrolyte corrosion resistance, damp-heat aging corrosion resistance and copper ion accelerated salt spray resistance.

Provided is a method for producing a higher silane having a high trisilane selectivity even when a lower silane is reacted with a catalyst for a long time.　The present invention includes a method for producing a higher silane, the method involving bringing a porous oxide and a lower silane into contact with each other and converting the lower silane into a higher silane having a higher number of silicon atoms than the lower silane, wherein the higher silane contains trisilane, the cumulative reaction time is 200 to 10,000 hours (exclusive of 200 hours), the temperature at the time of contact between the porous oxide and the lower silane is 100 to 400 °C, and the retention time represented by formula (1) is 80 to 150 seconds (exclusive of 150 seconds).　(1): Retention time [sec]=catalyst amount [L]×((pressure [MPaG]+0.101325) / 0.101325)×(273.15 / (temperature [°C]+273.15))×(3600 / gas supply amount [NL / h]) (In formula (1), the catalyst amount represents the amount of the porous oxide to be brought into contact with the lower silane, the pressure and the temperature represent a pressure and a temperature when the porous oxide and the lower silane are brought into contact with each other, and the gas supply amount represents the supply amount per unit time of the raw material gas containing the lower silane when the lower silane is brought into contact with the porous oxide.

This invention relates to a method for preparing ion-doped yttrium iron garnet powder, belonging to the field of materials preparation. The method specifies a method for preparing ion-doped yttrium iron garnet powder, wherein the chemical composition of the ion-doped yttrium iron garnet powder is Ce. a Bi b Y (3‑a‑b) Fe5O 12 Where a≤0.4, b≤0.4, and a and b are not both 0, the method includes the following process steps: first, synthesizing a polymeric network gel containing Ce, Bi, Y, and Fe ions; then calcining the obtained polymeric network gel to obtain a loose and porous oxide precursor powder; placing the obtained oxide precursor powder in a high-temperature horizontal ball mill for high-temperature controlled-pressure ball milling, and finally obtaining ion-doped yttrium iron garnet powder. The method of the present invention can obtain composite oxide powder with high phase purity, low defect density, and good compactness and grain uniformity.

The invention belongs to the technical field of solid electrolyte preparation, and discloses a hydrophobic composite solid electrolyte and a preparation method thereof. The preparation method comprises the following steps: mixing a template agent, a complexing agent and reactants required for preparing the oxide solid electrolyte, preparing a porous oxide solid electrolyte precursor through a hydrothermal synthesis method, and calcining to obtain the porous oxide solid electrolyte; mechanically mixing the porous oxide solid electrolyte with Li2S, P2S5 and an organic solvent to obtain a mixed material, and calcining the mixed material to obtain an oxide sulfide composite solid electrolyte; the surface of the oxide sulfide composite solid electrolyte is coated with a layer of hydrophobic liquid substance through spraying, and the hydrophobic composite solid electrolyte is obtained through curing treatment. The composite solid electrolyte has high conductivity and hydrophobicity, and has good interface compatibility with an electrode material.

The present invention relates to a metallic nanoparticle catalyst, and more particularly, to a porous catalyst in which metallic nanoparticles are embedded in a porous oxide support, and a method for preparing the porous catalyst. To this end, a porous catalyst composition having metallic nanoparticles of the present invention includes an oxide matrix structure having mesopores and micropores; and metal or metal oxide nanoparticles embedded in the oxide matrix structure having the mesopores and micropores. Thus, metallic nanoparticle catalysts having high activity even at low temperature are realized.