881 results about "Oxide coating" patented technology

The invention relates to the technical field of multi-sensor fusion, in particular to a detection method and system for silicon steel magnesium oxide adhesiveness. Particulate matter matching analysis is carried out based on the corresponding magnesium oxide coating particle condition and the silicon steel surface condition; the particle bonding effect is evaluated based on the particle matching analysis result and the fluidity condition of the coating in the scene, and the magnesium oxide adhesion quality is predicted based on the evaluation result of the particle bonding effect and the shaking condition of the equipment in the coating process. The characteristics of the coating, the surface condition of the silicon steel, the coating environment, dynamic factors in the coating process and the like are comprehensively considered, the adhesiveness of magnesium oxide is evaluated and analyzed from multiple dimensions, and the multi-dimensional analysis method provides a more scientific and more accurate evaluation means for the silicon steel coating technology.

The invention provides a positive pole piece, a preparation method thereof and a sulfide all-solid-state battery. The positive pole piece comprises a positive current collector and a positive material layer arranged on the surface of the positive current collector, the positive electrode material layer comprises a modified positive electrode active material, an antioxidant, a sulfide electrolyte material, a conductive agent and a positive electrode binder, the modified positive electrode active material comprises an inner core and an oxide coating layer arranged on the surface of the inner core, and the inner core is a lithium-containing positive electrode active material. When the positive electrode plate containing the antioxidant and the modified positive electrode active material provided by the invention is applied to the sulfide all-solid-state battery, the synergistic effect of the antioxidant and the modified positive electrode active material can be exerted, so that the rate capability and the cycling stability of the sulfide all-solid-state battery are improved.

The invention relates to a composite positive active material and a preparation method thereof, a positive pole piece and a secondary battery. The composite positive electrode active material comprises a positive electrode active material substrate, a porous metal oxide coating layer arranged on the surface of the positive electrode active material substrate and a conductive polymer coating layer arranged on the surface of the porous metal oxide coating layer. In the composite positive electrode active material, the electrochemical inert porous metal oxide coating layer has good thermal stability and is beneficial to stabilization of a crystal structure and inhibition of surface side reaction, and in addition, the porous structure is beneficial to transmission of lithium ions and storage of oxygen free radicals separated out due to structural collapse of a positive electrode active material matrix in the overcharge process; severe reaction with electrolyte is relieved, and overcharge failure of the positive electrode active material is slowed down. The conductive polymer coating layer can make up the electrochemical inertness of the metal oxide and improve the electronic conductivity of the positive electrode active material.

The invention discloses a diaphragm and a preparation method thereof, and a lithium battery, the diaphragm comprises a base membrane, and also comprises an MXene coating arranged on one side of the base membrane along the thickness direction, and an alumina coating arranged on the other side of the base membrane along the thickness direction; wherein the MXene coating layer comprises MXene modified by metal single atoms, and the aluminum oxide coating layer comprises aluminum oxide. According to the diaphragm and the metal monatomic modified MXene, the transfer speed of lithium ions in the charging and discharging process of a lithium battery can be increased, so that the electrochemical reaction speed in the charging and discharging process is increased, the requirement of high-rate charging and discharging is met, and the cycle performance of the battery is improved; aluminum oxide can enhance the mechanical strength of the diaphragm and prevent negative lithium dendrites from puncturing the diaphragm, so that thermal runaway is avoided, and the safety of the battery is improved.

The invention discloses a magnesium oxide coating performance detection system and method based on curing degree analysis, and relates to the technical field of coating performance detection.According to the magnesium oxide coating performance detection system and method, the coating effect of a magnesium oxide coating is analyzed based on the curing degree and contact adaptability, and the influence of airflow on the uniformity of the magnesium oxide coating is predicted based on airflow and silicon steel moving tracks; the curing effect of the magnesium oxide coating in the moving scene is predicted based on the influence of the environment on the curing of the magnesium oxide coating and the influence of airflow on the uniformity of the magnesium oxide coating, and the comprehensive curing condition of the magnesium oxide coating is predicted based on the coating effect of the magnesium oxide coating and the curing effect of the magnesium oxide coating in the moving scene. According to the magnesium oxide coating performance detection method, under the moving scene, the curing effect of the coating is predicted through the movement track model and airflow simulation, meanwhile, the curing condition is comprehensively analyzed in combination with the coating effect, and the precision of magnesium oxide coating performance detection is improved.

The invention belongs to the field of lithium ion battery materials, and particularly relates to a low-gas-production positive electrode material and a preparation method and application thereof. The low-gas-production positive electrode material provided by the invention comprises positive electrode material matrix particles and a composite metal oxide coating layer coating the surfaces of the positive electrode material matrix particles, the oxygen evolution overpotential of the lithium battery positive electrode material is less than or equal to 0.4 V; the composite metal oxide coating layer is a perovskite type compound, the chemical general formula is ABO3, the element A is a rare earth or alkaline earth metal element, and the element B is a transition metal element. The key point of the invention is that the ABO3 type composite metal oxide is coated on the surfaces of the matrix particles of the positive electrode material, so that the lithium battery positive electrode material with excellent gas production resistance is obtained, and as the lithium battery positive electrode material has relatively low oxygen evolution overpotential (eta is less than or equal to 0.4 V), not only can gas generation in the circulation process be reduced, but also the service life of the lithium battery positive electrode material is prolonged. And the capacity retention rate of the cycle can be kept at a relatively high level.

The invention discloses a component gradient iridium tantalum coating anode and a preparation method thereof, the component gradient iridium tantalum coating anode comprises a titanium-based bottom layer, a middle layer and a surface active layer structure with component gradient, and the middle layer and the active layer are both prepared through a thermal decomposition method. And the intermediate layer is prepared on the titanium substrate and is composed of TiO2 / Ta2O5 mixed oxide. The surface active layer is prepared on the outer side of the middle layer and comprises a plurality of layers of IrO2 / Ta2O5 oxide coatings with different iridium-tantalum proportions. Compared with a traditional uniform coating anode, the prepared component gradient iridium tantalum coating anode can relieve the stress concentration phenomenon and reduce coating cracking, the service life of the anode is remarkably prolonged, and the catalytic activity of the anode is remarkably improved; the modified carbon nano tube is added into the active layer precursor solution, so that the conductivity change caused by component gradient is improved, and the cell voltage of the component gradient iridium tantalum coating anode is effectively reduced; and moreover, the iridium content is lower, and the preparation cost of the electrode is reduced.

To provide an electrolytic solution for an electrolytic capacitor that is capable of maintaining high performance over a long period of time even in severe environments, and an electrolytic capacitor using this electrolytic solution.SOLUTION: There is provided an electrolytic solution for an electrolytic capacitor, the electrolytic capacitor including: a capacitor element having an anode foil that has a dielectric oxide film layer on a surface thereof, a cathode foil, and a solid electrolyte layer; and an electrolytic solution impregnated into the capacitor element. The electrolytic solution comprises an organic solvent containing the following compound (a) and / or (b): (a) an aromatic carboxylic acid having a sulfo group and a hydroxy group, and a boron compound; and (b) a composite compound of an aromatic carboxylic acid having a sulfo group and a hydroxy group, and a boron compound.SELECTED DRAWING: None

A preparation method for improving the etching resistance of an yttrium oxide coating comprises the following steps that after a high-purity sintered aluminum oxide substrate subjected to ultrasonic cleaning is fed into a coating process chamber, the coating process chamber is vacuumized to reach a preset vacuum degree; argon is introduced into the coating process chamber through the first gas ion source, and argon plasma is released after ionization so as to carry out plasma cleaning on the high-purity sintered alumina substrate; an yttrium oxide coating is deposited on the surface of the high-purity sintered aluminum oxide substrate subjected to plasma cleaning in a magnetron sputtering mode, meanwhile, oxygen is introduced into the coating process cavity through a second gas ion source, oxygen plasma is released after ionization, and oxygen vacancies are formed in the yttrium oxide coating. According to the method, the oxygen plasma is adopted to participate in the deposition process of the yttrium oxide coating, so that oxygen vacancies are formed in the yttrium oxide coating, and the physical etching resistance of the yttrium oxide coating is improved.

The invention aims to develop a lanthanide series modification strategy with wide application potential, the strategy can form a Q < 1-x-y > M < x > N < y > O < 1.9 > lanthanide series oxide coating layer rich in oxygen vacancies on the surface of the lithium ion battery positive collection material, and a coherent nano precipitated phase is formed between material layers, so that the dual modification effects of surface coating and interlayer doping are realized. Benefited from the double modification, the cycling stability of the material is obviously improved, the voltage drop is effectively inhibited, and the structural stability is obviously enhanced.

The invention relates to an integrated carbon / carbon composite material crucible containing an yttrium oxide coating, and belongs to the technical field of thermal field parts for monocrystalline silicon. The crucible comprises a carbon / carbon composite material crucible body, a glassy carbon coating and an yttrium oxide coating, the glassy carbon coating can effectively relieve thermal mismatch between the yttrium oxide coating and the carbon / carbon composite material crucible body, and carbon in the carbon / carbon composite material crucible body can be effectively prevented from escaping; impurities are not introduced into the yttrium oxide coating in the silicon melting process, so that the purity of a silicon material can be effectively ensured, and the yttrium oxide coating has excellent silicon erosion resistance and high-temperature stability; the carbon / carbon composite material crucible body is formed by densifying a carbon fiber prefabricated body which is formed by needling and laying a pure net tire for spraying resin, and the inner surface of the carbon / carbon composite material crucible body is a net tire which is wholly approximately isotropic, so that the overall mechanical strength of the crucible can be ensured, and a good combination effect with a subsequent functional coating can be ensured; and the service life of the crucible can be prolonged.

A pharmaceutical composition containing a metal oxide coated particle comprising 1) an amorphous solid dispersion (ASD) core containing an active pharmaceutical ingredient (API) and a polymer; and 2) a metal oxide coating, and the method of making said metal oxide coated particle by atomic layer deposition (ALD). The metal oxide coated particle is useful because it prevents the ASD from crystallization and helps maintain the ASD in an amorphous form.

The invention relates to the technical field of coating preparation, in particular to a spraying process of a compact yttrium oxide coating, which comprises the steps of pretreatment, powder activation, matrix surface modification, meltallizing spraying, cooling curing, de-shielding treatment and post-cleaning. Yttrium oxide powder is activated through low-temperature plasma, sand blasting parameters and a high velocity oxy-fuel spraying process are optimized, the porosity of the coating is remarkably reduced to 1.5% or below, and the hardness is improved to 500 HV0.3. Internal stress is reduced in a sectional cooling mode, and balance of coating performance and economical efficiency is achieved in combination with a parameter optimization algorithm based on particle deposition dynamics. The preparation method can meet the requirement of the high-end semiconductor manufacturing field on a high-performance protective coating, and solves the problem of high porosity of a traditional process.

The invention relates to the field of investment casting of nickel-based single-crystal high-temperature alloy blades, in particular to a method for preparing an yttrium oxide coating through ultrasonic impregnation of a modified ceramic core. And the silane coupling agent is utilized to modify the surface of the silicon-based ceramic core, so that the adhesive force of the coating is improved, and the risk of coating stripping is reduced. In the preparation process of the coating, the permeability of the liquid coating can be improved by utilizing ultrasonic impregnation, a coating solution is promoted to permeate into tiny pores of the silicon-based ceramic core, and the adhesive force of the coating is further enhanced, so that a uniform and firm protective coating is formed on the surface of the silicon-based ceramic core. The scheme is green and environment-friendly, is simple and easy to operate, is suitable for various different types of coatings including materials such as metals, oxides and polymers, and has wide applicability.

The invention discloses a bimetallic oxide coated sodium ion layered oxide material and a preparation method thereof in the field of chemical power sources, the chemical expression of the material is NaxNiaMnbMcO2 at bimetallic oxide, and the preparation method comprises the following steps: uniformly mixing a sodium source, a precursor and a transition source, then carrying out primary sintering, cooling and crushing to obtain a primary sintered product; and uniformly mixing the primary sintered product with the bimetallic oxide, and then carrying out secondary sintering, cooling and crushing to obtain the bimetallic oxide coated sodium ion layered oxide material. The preparation method has the beneficial effects that the coating process is simplified, and the preparation method is suitable for large-scale production. The surface of the material is provided with a double-metal oxide coating layer, and the coating layer can effectively improve the conductivity of the material, reduce impedance and restrain the problems of corrosion of electrolyte to the surface of the material, interface side reaction and the like. The cycling stability and the rate capability of the battery can be effectively improved, and meanwhile, the self capacity is not influenced.

The invention discloses an integrated preparation method of a large-thickness high-density electrical insulation-corrosion-resistant ceramic coating on the surface of a heat dissipation substrate for a high-power device, and relates to the technical field of surface treatment of aluminum alloys and composite materials thereof. The method comprises the following steps: placing a pretreated substrate as an anode and a stainless steel plate as a cathode in a basic arc suppression type electrolyte, and performing low-temperature soft plasma electrolytic oxidation on the surface of the pretreated substrate by using an asymmetric bipolar pulse micro-arc oxidation technology to grow a large-thickness high-density ceramic layer in situ; specifically, low-temperature soft spark discharge is induced by inserting additional negative pulse voltage, the plasma temperature and energy are stabilized, spark discharge is uniform, and the density is increased by an order of magnitude, so that continuous bombardment with no damage to the surface flatness as the plasma intensity upper limit is carried out on a passive film on the surface of a substrate; and the defects such as pores and cracks are continuously healed and repaired, and the densification of the coating is promoted, so that the aluminum oxide coating with large thickness, high density, high electrical insulation and corrosion resistance is obtained.

The invention relates to an automatic magnesium oxide coating analysis system and method, and belongs to the technical field of coating quality analysis. The method comprises the following steps: acquiring attributes of a magnesium oxide coating, an infrared spectrum and environment temperature and humidity data, and constructing a multi-source feature set; analyzing the distribution dispersion and local enrichment risk of free water based on a dynamic migration model, and analyzing the bonding weakening degree and dissociation risk of bound water based on a chemical stable state model; respectively generating free water treatment process parameters for inhibiting structural damage and combined water treatment process parameters for preventing performance degradation according to the abnormal analysis result and the coating attribute; by performing coupling influence analysis on the two types of process parameters, the balance requirements of the structural integrity and chemical stability of the coating are coordinated, an optimized process scheme is generated, and cooperative regulation is realized. According to the method, accurate identification, independent analysis and cooperative control of the free water and the bound water are realized, and the accuracy, reliability and quality consistency of coating water treatment are improved.

A component for use in a semiconductor processing chamber is provided. A metal or metal alloy component body has a process-facing surface. An intermediate aluminum oxide coating is disposed on the process-facing surface, the intermediate aluminum oxide coating being at least 99% pure by weight and having a porosity of less than 0.1% by volume, the intermediate aluminum oxide coating having a first thickness. A process-exposed layer is disposed on the intermediate aluminum oxide coating, the process-exposed layer comprising at least one of yttrium, hafnium, zirconium, lanthanum, magnesium, and a lanthanide, the process-exposed layer being at least 99% pure by weight, having a porosity of less than 0.1%, and having a second thickness, the second thickness being less than or equal to the first thickness.

The invention discloses a negative electrode active material and a preparation method thereof, a negative electrode pole piece and a secondary battery, the negative electrode active material provided by the invention comprises a silicon-carbon composite material and an aluminum oxide layer coated on the surface of the silicon-carbon composite material, and the silicon-carbon composite material is a composite material of nitrogen-fluorine co-doped porous carbon and nano silicon particles. By optimizing and regulating the porosity and pore size distribution of the porous carbon, the ion transmission kinetics and the structural stability are improved, and the problems of poor rate capability, short cycle life and the like caused by single pore size of the traditional porous carbon are solved. By adopting the nitrogen and fluorine co-doped porous carbon skeleton, the conductivity of the electrode material is enhanced, and the cycling stability of the battery is improved. The nano silicon component uniformly deposited through a chemical vapor phase method provides high specific capacity, the aluminum oxide coating layer can effectively inhibit the decomposition reaction of the solid electrolyte, and the long-term stability and cycle performance of the electrode structure are jointly guaranteed through the dual effects.

The invention relates to the technical field of iron-nickel alloy foil preparation, and discloses a low-curl iron-nickel alloy foil suitable for an all-solid-state battery and a preparation method of the low-curl iron-nickel alloy foil. The electrolyte solution is added into an electrolytic cell, and current is applied to the electrolyte solution; the method comprises the following steps: depositing an iron-nickel alloy on the surface of a cathode roller, stripping to obtain an iron-nickel alloy foil, carrying out electrophoresis on the iron-nickel alloy foil by using a magnesium oxide electrophoresis solution in an electrophoresis cell to form a magnesium oxide coating on the iron-nickel alloy foil, cleaning with an acid solution, and carrying out electrochemical fluorination treatment on the iron-nickel alloy foil to obtain the magnesium oxide coating on the iron-nickel alloy foil. Forming a fluorinated layer on the magnesium oxide coating; and the iron-nickel alloy foil is subjected to heat treatment at the temperature not exceeding 600 DEG C in a heat treatment chamber, and the iron-nickel alloy foil is obtained after cooling. The high-quality iron-nickel invar iron-nickel alloy foil can solve the curling problem and is suitable for all-solid-state batteries.

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.

A component of a plasma processing chamber is provided. An yttrium oxide coating is formed on a surface of the component body, where the yttrium oxide coating is deposited by aerosol deposition and annealed, where the yttrium oxide coating is at least 95% by weight of pure yttrium oxide.

The invention relates to the technical field of preparation of lithium ion battery positive electrode materials, in particular to a double-coated modified positive electrode material and a preparation method and application thereof. The preparation method of the double-coated modified positive electrode material comprises the following steps: obtaining a positive electrode material and a high-entropy oxide; uniformly mixing the positive electrode material with the high-entropy oxide, and carrying out first sintering treatment to obtain a high-entropy oxide coating material; and mixing the high-entropy oxide coating material, a carbon source and a solvent, and sequentially carrying out solvothermal reaction and secondary sintering treatment to obtain the double-coating modified positive electrode material. On the basis of carrying out high-entropy oxide solid-phase sintering coating modification on the positive electrode material, wet-process carbon coating is further carried out, so that the lithium-hydrogen exchange side reaction caused by long-time contact between positive electrode particles and a solution can be effectively reduced, and the defects of low specific capacity and low first-circle efficiency of the solid-phase sintering coating high-entropy oxide positive electrode material can be overcome.

Cathode materials, batteries, and methods of forming one or more electrodes for batteries are disclosed. In some embodiments, a coated lithium battery cathode material includes coated single crystalline primary particles, the coated single crystalline primary particles including single crystalline primary particles of a lithium transition metal oxide, a first sub-nanoscale lithium metal oxide coating on the single crystalline primary particles wherein the first sub-nanoscale lithium metal oxide is less than 1 nm thick, and a carbon coating disposed on the first sub-nanoscale lithium metal oxide coating to form coated single crystalline primary particles.

The invention discloses a preparation method of ODS alloy composite powder for laser additive manufacturing. The invention belongs to the technical field of metal additive manufacturing materials, and particularly relates to a preparation method of oxide dispersion strengthening (ODS) alloy composite powder for laser additive manufacturing. The metal matrix powder is divided into two particle size intervals by taking 30 [mu] m as a particle size critical point, the metal matrix powder in the two particle size intervals is mixed with the nano oxide powder through differential acoustic resonance to form two kinds of composite powder, and the ODS alloy composite powder is obtained by mixing the two kinds of composite powder. According to the method, different high-energy acoustic resonance mixing time is adopted for coating characteristic differences caused by different masses of metal powder (smaller than or equal to 30 microns and gt; 30 microns) in different particle size intervals. And finally, the thicknesses of nano oxide coating layers of all the powder are accurately controlled to be 500 nm or below, and the risks of nano oxide agglomeration and large-size slag formation in the SLM process are remarkably reduced.

The invention is in the field of nanostructure synthesis. Provided are highly luminescent nanostructures, particularly highly luminescent quantum dots, comprising a nanocrystal core / shell and a thin metal oxide on the outer shell of the nanostructure. Also provided are methods of preparing the nanostructures, films comprising the nanostructures, and devices comprising the nanostructures.

The invention relates to a lanthanide perovskite type oxide coated high-nickel ternary positive electrode material and a preparation method thereof. The positive electrode material is spherical-like particles formed by coating a high-nickel ternary positive electrode material with a lanthanide perovskite type oxide coating layer according to a mass ratio of (0.01-0.03): 1; the chemical formula of the lanthanide perovskite type oxide is LazCa1-zCoO3, and z is more than 0 and less than or equal to 1; the chemical formula of the high-nickel ternary positive electrode material is LiNixCoyMn (1-x-y) O2, x is greater than or equal to 0.80 and less than or equal to 0.96, y is greater than or equal to 0.01 and less than or equal to 0.10, and 1-x-y is greater than 0. The preparation method comprises the following steps: ball-milling and mixing the lanthanide perovskite type oxide and the high-nickel ternary positive electrode material, and sintering at low temperature in a protective atmosphere. The positive electrode material is high in lithium ion and electron conductivity in the charging and discharging process, high in reversibility, stable in structure and good in rate capability and cycling stability. The method is simple, low in cost and suitable for industrial production.

The invention relates to the technical field of magnesium oxide activity detection, in particular to a magnesium oxide activity rapid detection method and system based on data fusion, and the method comprises the following steps: analyzing the activity attenuation trend of magnesium oxide in a storage period based on activity characteristic data and storage environment data of a magnesium oxide sample; analyzing the adhesion efficiency of the magnesium oxide coating silicon steel based on the silicon steel substrate state data, the environmental stress data and the activity attenuation trend analysis result of the magnesium oxide in the storage period; evaluating the service reliability of the magnesium oxide coating by combining an activity attenuation trend analysis result of the magnesium oxide in the storage period and an adhesion efficiency analysis result of the magnesium oxide coating silicon steel; and carrying out replacement early warning on the magnesium oxide according to the service reliability evaluation result of the magnesium oxide coating. The influence of the active state of magnesium oxide under different storage durations on the performance of the silicon steel coating can be accurately evaluated, the quality stability of silicon steel products is guaranteed, and waste of magnesium oxide materials is reduced through accurate early warning.

The invention provides a method and equipment for detecting ion migration of a perovskite solar cell, and relates to the technical field of perovskite solar cells, and the method comprises the steps: obtaining a fluorine-doped tin oxide coating glass substrate, and carrying out the spin coating of a SnO2 colloidal solution on the glass substrate, so as to obtain an electron transport layer; preparing perovskite solutions of different components according to a preset precursor solution formula, spin-coating the electron transport layer with the perovskite solutions, and performing annealing treatment to obtain perovskite thin films of different components; coating a Spiro-OMeTAD solution on the perovskite thin film so as to obtain a hole transport layer; depositing a gold electrode on the hole transport layer to obtain a solar cell device; different illumination conditions and different working load conditions are simulated, the solar cell device is operated, and the relation between the interface ion cumulant and the load is evaluated. The problems of unstable performance, current and voltage lagging and the like caused by ion migration of the existing titanium ore solar cell under the actual working condition are solved.

The invention relates to the technical field of semiconductors, and discloses a strongly-oriented yttrium oxide coating and a preparation method thereof.The strongly-oriented yttrium oxide coating is arranged on the surface of a base body, and the strongly-oriented yttrium oxide coating is of a (222)-oriented face-centered cubic phase structure which is not smaller than 70 vol%. According to the strongly oriented yttrium oxide coating provided by the invention, the plasma etching resistance of the yttrium oxide coating can be improved.