145 results about "Oxide substrate" patented technology

The invention belongs to the technical field of friction catalysis, and particularly relates to application of an aluminum oxide substrate in friction catalytic degradation of high-concentration organic dye wastewater, an aluminum oxide ceramic chip is used as a substrate, titanium dioxide nano powder is used as a catalyst, and the aluminum oxide ceramic chip is fixed at the bottom of a flat-bottom glass beaker; the method comprises the following steps: adding organic dye wastewater, a magnetic turntable and titanium dioxide nano powder into a flat-bottomed glass beaker, then putting the flat-bottomed glass beaker in a dark environment at room temperature, stirring and reacting on a magnetic stirrer for 90-150 minutes, and after the reaction is completed, completely degrading organic dye in the wastewater. According to the method, the aluminum oxide ceramic chip is added into a system for performing friction catalytic degradation on the organic dye wastewater by using the titanium dioxide nano powder as the substrate, so that the degradation rate of the organic dye is greatly improved, the complete degradation time of the organic dye is shortened, and a new thought is provided for performing friction catalytic degradation on the organic dye wastewater by using the titanium dioxide nano powder.

A catalyst may include a metal oxide substrate comprising a nickel species, wherein an exposed surface of the catalyst comprises at least some of the nickel species and the exposed surface is substantially nonporous.

The present application provides a positive electrode material, and a preparation method therefor and the use thereof. The positive electrode material of the present application comprises a substrate and an island-shaped coating layer provided on the surface of the substrate, wherein the substrate is a lithium-ion layered oxide having an O2 stacking structure; and the coating layer is selected from one or more of the oxides of the element M, the element M being selected from one or more of Al, Mg, Ti, Y, Zr, La, Ce, Pr, Si, Sn, Cu, W, Sm, Gd, In, Zn, and Fe. In the positive electrode material of the present application, by coating the surface of the lithium-ion layered oxide substrate having an O2 stacking structure with the specific island-shaped oxide coating layer, the positive electrode material is made to have relatively high specific capacity, structural stability and positive electrode interface stability at high voltages, thereby obtaining good cycling performance.

The invention discloses a binding phase for tungsten-copper electronic paste and a preparation method thereof, and relates to the technical field of electronic paste preparation. The tungsten-copper electronic paste consists of 60-75wt% of aluminum oxide, 3-10wt% of magnesium oxide, 5-9wt% of calcium oxide, 8-15wt% of silicon dioxide and 3-10wt% of manganese oxide, and the binding force between the tungsten-copper electronic paste and an aluminum oxide substrate can be effectively improved. Aluminum oxide powder selected by the binding phase is subjected to long-time ball milling, so that the powder is fully ground and crushed, a large number of dislocations are filled in the powder, the superfine powder with the high specific surface area is fully mixed with other binding phase components, electronic paste with excellent performance can be obtained, the tungsten-copper electronic paste is printed on an aluminum oxide green tape through a screen printing machine, and the tungsten-copper electronic paste is obtained. After sintering at 1350 DEG C, the excellent bonding strength of the film layer and the aluminum oxide substrate can be maintained, and when an adhesive force test is carried out by adopting GB / T 9286-1998, the test result can stably maintain the ASTM grade to be 5B.

The utility model relates to a ceramic chip and a nitrogen oxygen sensor, the ceramic chip comprises a plurality of layers of ceramic substrates, and the plurality of layers of ceramic substrates comprise an aluminum oxide substrate on the outer layer and a zirconium oxide substrate on the inner layer; the lead is arranged on the ceramic substrate and is used for connecting an external circuit; the heating electrode is printed on the ceramic substrate; the positive and negative electrodes are hidden in the multilayer ceramic substrate; the measuring electrode is used for measuring a medium to be detected and generating an induction signal; and the reference electrode is isolated from the measuring electrode and is used for providing a reference potential. The utility model has the advantages of higher mechanical strength, measurement accuracy and production efficiency, and lower manufacturing complexity and cost.

Disclosed is a 3-terminal neuromorphic synaptic device including a substrate, a source electrode and a drain electrode provided on the substrate to be spaced apart from each other, a channel area provided on the substrate to be electrically connected to the source electrode and the drain electrode, between the source electrode and the drain electrode, an ion transport layer provided on the channel area, a gate electrode provided on the ion transport layer, and a voltage application part that applies a gate voltage to the gate electrode. The gate electrode is formed of at least one of an oxide-based material including mobile ions, a chalcogenide-based material including the mobile ions, and a nitride-based material including the mobile ions.

The invention belongs to the field of hydrogen sensors, and particularly relates to an MEMS hydrogen sensor based on a high-entropy alloy and a preparation method of the MEMS hydrogen sensor. The hydrogen sensor comprises an insulating substrate, an interdigital electrode and a hydrogen sensitive layer, the hydrogen sensitive layer is formed by compounding high-entropy alloy nanoparticles composed of at least five transition metal elements and a semiconductor metal oxide substrate, and the high-entropy alloy nanoparticles are uniformly dispersed on the surface of the semiconductor metal oxide substrate to form a heterojunction; the atomic percent of each transition metal element in the high-entropy alloy nanoparticles is 5%-35%; the semiconductor metal oxide substrate is of a SnO2 or ZnO nano structure, and the specific surface area is larger than or equal to 50 m < 2 > / g. The preparation method is the preparation method of the hydrogen sensor. The hydrogen sensor provided by the invention has an ultralow hydrogen detection limit, the response speed is within a second level, the consumption of noble metal is greatly reduced, and the activity attenuation in a high-temperature environment is small.

To provide a laminated iron core which makes it possible to separate an electrical insulating material from a soft magnetic plate with a lower environmental load than existing techniques, while using an oxide-based material capable of ensuring desired heat resistance as the electrical insulating material, and to provide a method of manufacturing the same.SOLUTION: The laminated iron core according to the present invention includes a plurality of soft magnetic plates laminated with an electrical insulation layer between each two of the plates, and the electrical insulation layer is a layer including a lead-free glass composition having a softening point lower than an A1 transformation point of the soft magnetic plate as a matrix.SELECTED DRAWING: Figure 1

A vertical cavity surface emitting laser includes an oxide substrate having a first face and a second face at an opposite side from the first face; a semiconductor section disposed on the first face; a dielectric filter layer disposed between the semiconductor section and the first face and having a reflective spectrum configured to provide an optical window; a first DBR mirror; and a second DBR mirror disposed at a curved surface of the second face. The first DBR mirror, the semiconductor section, the dielectric filter layer, the oxide substrate, and the second DBR mirror are arranged in a first axial direction to form an extended cavity. The semiconductor section is disposed between the dielectric filter layer and the first DBR mirror, and includes a p-type III nitride region, an n-type III nitride region, and a III nitride active region between the p-type and n-type III nitride regions.

The invention provides a preparation method of a cuprous oxide / cobaltosic oxide heterojunction composite material. The preparation method comprises the following steps: S1) growing cobaltous hydroxide on the surface of a carrier in situ; s2) calcining the cobaltous hydroxide, so as to obtain cobaltosic oxide; and S3) carrying out electroreduction deposition on the cobaltosic oxide in a mixed solution containing a copper source and an electrolyte to obtain the cuprous oxide / cobaltosic oxide heterojunction composite material. In the reduction reaction of electro-catalysis of 5-hydroxymethylfurfural, the prepared composite material serves as a catalyst, cuprous oxide serves as a main catalytic site for catalyzing reduction of HMF into DHMF, the capacity of generating active hydrogen through water dissociation is promoted due to existence of a cobaltosic oxide substrate, and therefore the selectivity of the product DHMF is improved; meanwhile, the composite material prepared by the invention shows excellent electrochemical catalysis performance and good cycling stability, and has a great application prospect in an HMF electroreduction reaction.

The invention belongs to the field of microwave sensors, and particularly relates to a wireless passive tunable temperature sensor in a severe environment. The objective of the invention is to optimize the adjustment adaptability of the wireless passive temperature sensor in a severe environment, thereby improving the measurement precision. The temperature sensor comprises an upper-layer metal structure, an aluminum oxide substrate, a lower-layer metal structure and a photosensitive structure. The upper-layer metal structure is arranged on the surface of one side of the aluminum oxide substrate, and the lower-layer metal structure and the photosensitive structure are arranged on the surface of the other side of the aluminum oxide substrate; the surfaces of the sides, away from the upper metal structure, of the lower metal structure and the photosensitive structure are covered with transparent aluminum oxide film structures; and the photosensitive structure is a silicon-doped material and is configured to adjust the dielectric constant of the equivalent LC circuit of the temperature sensor under the condition of receiving near-infrared light pumps with different powers, so that the resonant frequency and the amplitude are controllably changed.

Various aspects disclosed relate to a catalyst particle for catalyzing the production of syngas from carbon dioxide and methane. The catalyst particle includes a metal oxide substrate. The substrate includes a particulate nickel phase. An exposed surface of the catalyst particle includes at least some of the particulate nickel phase. Additionally, the exposed surface is substantially nonporous.

The invention discloses a post-treatment liquid and application thereof in an anode foil formation post-treatment process, and the post-treatment liquid comprises the following components in percentage by mass: 0.1-5% of a main film-forming agent, 0.05-3% of a synergistic stabilizer and the balance of a solvent, the main film-forming agent is selected from at least one of a waterborne polyurethane emulsion and a silane coupling agent; the synergistic stabilizer is selected from at least one of organophosphate, molybdate and tungstate. The main film-forming agent and the synergistic stabilizer are compounded to obtain the post-treatment liquid, on one hand, the synergistic stabilizer is firmly combined with an aluminum oxide substrate to carry out deep passivation treatment on an oxidation film on the surface of the anode foil, and on the other hand, the synergistic stabilizer is subjected to network crosslinking with a hydrophobic protection layer formed by the main film-forming agent; the three-dimensional composite protective film can effectively isolate water molecules, repair microdefects on the surface of an oxidation film, prevent the phenomena of specific volume attenuation, leakage current increase and the like of the anode foil, and improve the long-term working reliability of the capacitor.

The invention provides a preparation method of a copper-based alloy quantum dot / metal oxide composite catalyst and application of the copper-based alloy quantum dot / metal oxide composite catalyst to photocatalytic CO2 reduction, and belongs to the technical field of catalysts, and the catalyst is prepared by depositing copper nitrate and other metal nitrate in different molar ratios on a metal oxide substrate through light induction. The Cu-M alloy has a nano-sized quantum dot structure, and the composite catalyst shows excellent photocatalytic carbon dioxide (CO2) reduction performance and especially has high selectivity to methane (CH4). The catalyst provided by the invention is simple and convenient in preparation process, low in cost and environment-friendly, and has efficient catalytic activity and good cycle stability. The method is expected to have a wide application prospect in the fields of photocatalytic CO2 reduction, methane production and the like, and has an important promotion effect on clean energy development and environmental governance.

The invention provides an iron-tin co-doped amorphous gallium oxide-based ferromagnetic ceramic film, and belongs to the technical field of magnetic semiconductor ceramic materials. The preparation method comprises the following steps: sufficiently mixing Ga, Fe and Sn organic precursor solutions according to a certain proportion to form a GaFeSn organic precursor solution; the cleaned single crystal aluminum oxide substrate is coated with the GaFeSn organic precursor solution in a spinning mode; then putting the obtained GaFeSn organic precursor film into a tube furnace with a single temperature zone; under the air atmosphere, the temperature of the tubular furnace is slowly increased to 550 DEG C at the speed of 5 DEG C / min, heat preservation is carried out for 1 h at the temperature of 550 DEG C, annealing treatment is carried out, and the amorphous GaFeSnO magnetic ceramic film which is uniform in thickness and has the amorphous phase and strong ferromagnetism is prepared. Strong ferromagnetism of the thin film is excited with low iron element doping concentration (10%), and the problem of low conductivity caused by transition metal doping in the magnetic ceramic thin film is solved. The amorphous GaFeSnO magnetic ceramic film prepared by the method has strong ferromagnetism of 170 emu / cm < 3 > under 2K and 90 emu / cm < 3 > under 300K, and the Curie temperature of 335K.

The application discloses a diamond-based infrared composite window material, which comprises an aluminum oxide substrate, a transition layer and a diamond layer, wherein the transition layer comprises an AlN layer, an Si3N4 layer and an SiC layer; the AlN layer is deposited on the surface of the aluminum oxide substrate, the Si3N4 layer is deposited on the surface of the AlN layer, the SiC layer is deposited on the surface of the Si3N4 layer, and the diamond layer is deposited on the surface of the SiC layer. The diamond-based infrared composite window material has high transmittance, thermal conductivity and interface bonding rate in a middle-wave infrared band (3-5 mu m). The application further discloses a preparation method of the diamond-based infrared composite window material.

The invention belongs to the technical field of polymer light diffusion plates, and relates to a micro-nano composite structure polymer light diffusion plate and a preparation method and application thereof.The preparation method comprises the following steps that S1, an aluminum substrate is sequentially subjected to high-strength oxidation, denudation, mild oxidation and chambering treatment; constructing an aluminum oxide substrate with a micron pit and ordered nano gradient hole composite structure; s2, nickel is deposited on the aluminum oxide substrate through electrochemical deposition; further modifying fluorosilane to obtain a flexible reusable nickel template; s3, coining a flexible reusable nickel template on the polymer plate, or spin-coating the pre-polymerized precursor on the surface of the polymer plate and then coining; and after curing, stripping the flexible reusable nickel template to obtain the polymer light diffusion plate with the micro-nano composite structure. The micro-nano composite structure polymer light diffusion plate prepared by the invention has relatively high total light transmittance and diffusion light transmittance, has efficient radiation cooling and super-hydrophobic antifouling capabilities, and is used in LED illumination display and / or heat dissipation.

A method includes forming a semiconductor region, forming a gate spacer over the semiconductor region, forming a source / drain region aside of the semiconductor region, wherein the source / drain region is of p-type, and forming a gate dielectric over the semiconductor region. The gate dielectric is formed in a space between opposing portions of the gate spacer. A ruthenium oxide layer is formed over the gate dielectric, and acts as a part of a work-function layer of a gate electrode. The method further includes incorporating silicon into the ruthenium oxide layer.

The invention provides a method for growing a gallium oxide-doped thin film on a magnesium oxide substrate and a photoelectric detector. The invention discloses a method for growing a doped gallium oxide film on a magnesium oxide substrate. The method comprises the following steps: growing a gallium oxide film on the magnesium oxide substrate; and carrying out annealing treatment on the magnesium oxide substrate and the gallium oxide thin film, so that the magnesium element is diffused into the gallium oxide thin film from the magnesium oxide substrate to obtain the doped gallium oxide thin film.

The invention belongs to the technical field of electrolytic catalysts, and particularly relates to a ruthenium nano-catalyst and a preparation method and application thereof. The preparation method of the ruthenium nano-catalyst comprises the following steps: (1) mixing a ruthenium chloride aqueous solution and a graphene oxide aqueous solution, uniformly stirring, and freeze-drying; and (2) placing the sample obtained in the step (1) between two pieces of carbon paper, and carrying out Joule hot flash sintering annealing to obtain black aerogel, namely the ruthenium nano-catalyst. The invention provides a high-loading-capacity superfine ruthenium nano-catalyst. The high-loading-capacity superfine ruthenium nano-catalyst comprises a reduced graphene oxide substrate and ruthenium nano-particles which are loaded on the substrate and have the characteristics of high loading capacity and superfine property. According to the method, the reduced graphene oxide substrate is in a bulky shape, anchoring points are provided for the ruthenium nanoparticles, the nanoparticles are finely and uniformly dispersed on the substrate in a high-density mode, and the structure is clear.

A vertical resonance surface emitting laser includes an oxide substrate having a first surface and a second surface opposite to the first surface; a semiconductor section disposed on the first surface; a dielectric filter layer disposed between the semiconductor section and the first surface and having a reflection spectrum configured to provide an optical window; a first DBR mirror; and a second DBR mirror disposed on the curved surface of the second surface. The first DBR mirror, the semiconductor section, the dielectric filter layer, the oxide substrate, and the second DBR mirror are arranged in a first axial direction to form an extended cavity. The semiconductor section is disposed between the dielectric filter layer and the first DBR mirror and includes a p-type group III nitride region, an n-type group III nitride region, and a group III nitride active region between the p-type group III nitride region and the n-type group III nitride region.

The present application relates to the field of optical technology, more particularly to a visible to mid-infrared super-wideband absorber and a preparation method thereof, the method comprising the following steps: self-assembling polystyrene microspheres on a polyimide substrate to form a monolayer hexagonal close-packed structure substrate, and then forming a nano-cone array substrate through ion etching; placing a copper substrate into a coating chamber and introducing argon, and sputtering to obtain a reflection layer; placing a zirconium substrate into the coating chamber and introducing argon and oxygen, and sputtering to obtain a first metal absorption film layer; continuously introducing argon and oxygen, and sputtering to obtain a second metal absorption film layer; continuously introducing argon and oxygen, and sputtering to obtain a third metal absorption film layer; placing an aluminum oxide substrate into the coating chamber, and then introducing argon, and sputtering to obtain a dielectric antireflection layer, thereby forming the absorber. The present application can have extremely high absorption in the visible light and near-infrared regions, and has good angle tolerance, polarization insensitivity, bending resistance and heat resistance.

The invention relates to the field of electronic ceramic substrates, provides a preparation method of a black aluminum oxide substrate, and solves the defects of low heat conductivity and low mechanical strength of the existing black aluminum oxide substrate due to the defects of a preparation process. The preparation method comprises the following steps: (1) preparing raw materials; (2) preparing slurry; (3) tape casting; (4) discharging glue; (5) sintering; (6) annealing; and (7) surface treatment.

The present invention provides a method for producing oxide-based materials that can reduce the degradation of their properties. [Solution] The method for manufacturing oxide-based materials includes a step of firing a lithium-containing material, the firing step of placing a firing jig containing the material into a furnace and firing the material while flowing an atmospheric gas into the furnace. Multiple holes connecting the inside and outside of the firing jig are provided in the firing jig. The holes provided in the firing jig are located on the upstream and downstream sides of the atmospheric gas, respectively. At this time, the material can be fired while transporting the firing jig toward the upstream side of the atmospheric gas.

This invention discloses a hole transport material, its preparation method, and its applications, relating to the field of photovoltaic materials technology. The hole transport material provided by this invention has the chemical formula shown in Formula I. The conjugated direction groups used as end groups are selected from carbazole, phenothiazine, phenoxazine, or dibenzocarbazole groups, which possess excellent carrier transport performance. Simultaneously, this invention selects α-hydroxyphosphonic acid groups as unique anchoring groups for self-assembled molecules, enabling the self-assembled molecules to form a stronger anchor with the metal oxide substrate, thereby forming a dense and uniform self-assembled layer, significantly improving the photoelectric conversion efficiency and stability of perovskite solar cells. The α-hydroxyphosphonic acid groups also have an interface passivation effect. This hole transport material, as a perovskite material layer in HTMs (Hyperoxyterephthalic Acid Transformers) cells or modules, helps improve cell efficiency and lifespan, optimize cell structure, reduce costs, and achieve large-area production and industrialization.

The invention relates to the technical field of catalysts, in particular to a ruthenium / nano cerium dioxide based heterojunction catalyst and a preparation method and application thereof, and is characterized in that the preparation method comprises the following steps: (1) precipitating cerium salt on a metal oxide substrate through a coprecipitation method, and performing aging and roasting treatment to obtain a nano cerium dioxide heterojunction carrier; and (2) mixing the nano cerium dioxide heterojunction carrier with a ruthenium source, and carrying out ultraviolet light reduction treatment to obtain the ruthenium / nano cerium dioxide-based heterojunction catalyst. The ruthenium / nano cerium dioxide-based heterojunction catalyst prepared by the invention can catalyze ammonia gas decomposition at 500 DEG C to prepare hydrogen, and the ammonia gas conversion rate can reach 99.7%.

The invention discloses an aluminum oxide ceramic substrate with high cold and hot impact resistance and a preparation method thereof, and relates to the technical field of ceramic substrates. The aluminum oxide ceramic substrate is prepared from the following raw material components in parts by mass: 60 to 65 parts of aluminum oxide, 1 to 5 parts of modified glass powder and 0.05 to 0.2 part of magnesium oxide; the modified glass powder comprises magnesium oxide, silicon oxide and calcium carbonate, and 0.5-2.5 wt% of zirconium oxide is doped in the modified glass powder. According to the aluminum oxide ceramic substrate disclosed by the invention, the specific glass powder with high magnesium oxide content is adopted, so that devitrification can be reduced, and bubble defects can be reduced; meanwhile, a specific amount of zirconium oxide is doped in the glass powder, so that the sintering temperature required by the aluminum oxide substrate can be effectively reduced, the compactness of the material is increased, and the cold and hot impact resistance is improved.

The invention relates to the field of integrated lithium ion batteries based on a ceramic packaging technology, in particular to a method for preparing an integrated lithium ion battery based on a ceramic packaging structure, which comprises the following steps of: respectively sintering a Ni layer and preparing a porous Cu layer on the surface of an aluminum oxide substrate to respectively serve as a positive current collector and a negative current collector of the lithium ion battery. And coating the surfaces of the Ni layer and the Cu layer with positive and negative active material slurry through screen printing, and drying and curing. And via hole electrical interconnection is carried out on the tube shell layer, and double-sided via hole-electrical interconnection of the aluminum oxide substrate is realized by using Cu-Sn-Ti slurry after copper column hole filling. And after the diaphragm is filled, vacuum sealing and electric interconnection of the positive electrode substrate, the tube shell layer and the negative electrode substrate are realized by using ultra-vacuum sealant and Sn-Bi soldering paste. And then a LiPF6 electrolyte is used for liquid injection at the reserved micropores. And finally, sealing holes to obtain the integrated lithium ion battery based on the ceramic packaging structure, which is adjustable in voltage-capacity and high in reliability.

The application discloses a kind of composite positive electrode materials, including layered oxide and cladding layer, cladding layer is coated outside layered oxide, layered oxide general formula is NaMeO2, wherein, Me is one or several of Ni, Fe, Mn, Co and the combination of Cu, cladding layer is sulfur-doped carbon-coated Cu-Sn alloy, and S-Sn chemical bond exists in cladding layer.The application also discloses its preparation method, which is to mix and grind layered oxide, Cu powder, Sn powder, organic carbon source solid powder and sulfur source solid powder, and then sinter at 500-600 DEG C for 2-3 hours in a protective atmosphere.The application also discloses a positive plate and a sodium-ion battery with the composite positive electrode material.The application enhances the bonding force between the cladding layer and the layered oxide substrate, and the S-Sn bond effectively inhibits the interlayer peeling of the cladding layer material during the cycle process, thereby improving the battery capacity retention rate.

The utility model discloses an evaporation source device for molecular beam epitaxy, and aims to solve the problems that in the prior art, an evaporation source is complex in structure, high in energy consumption and serious in deflation, different cells are prone to influence each other and the like. The evaporation source comprises the following components: an aluminum oxide substrate, a glass crucible, a lamp filament, an electrode (aviation plug), a thermocouple, a water tank, a supporting rod, a flange and the like. Wherein raw materials to be evaporated are contained in the glass crucible; the aluminum oxide substrate supports the shallow crucible; the filament is used as a high-temperature metal material and is connected with the electrode which is connected with the high-voltage power supply. The supporting rod connects the water tank and the flange. By adopting the technical scheme of the invention, the to-be-evaporated raw materials can be uniformly heated, so that stable material evaporation is provided, meanwhile, the mutual influence between different cells is small, and simultaneous evaporation and co-deposition can be realized; the filament has a heating function, so that the evaporation source is simple in structure, energy consumption is reduced, and industrial production is facilitated; the evaporation source equipment is small in size and small in air release amount; in addition, a thermocouple temperature measuring device is arranged, and suggestion and accurate regulation and control of the temperature of the glass crucible can be achieved.