30results about How to "Facilitates ion diffusion" patented technology

The invention discloses a method for collecting platinum group metal through microwave heating fusion. The method comprises the following steps that firstly, the temperature of a mixture containing aplatinum group metal raw material, a collector and additives is raised to 1,050 DEG C-1,200 DEG C under microwaves, the mixture is fused, and after fusing is completed, slag-liquid separation is carried out, and a slag phase and metal matte are obtained; wherein the collector comprises Ni3S2, and the additives are at least one of borax, sodium carbonate, sodium bicarbonate, sodium hydroxide, sodium peroxide and methylcellulose; and secondly, the metal matte is cooled and subjected to acid leaching treatment, and pickle liquor and platinum-containing leaching slag are obtained. According to themethod, efficient recovering of the platinum group metal in a waste catalyst containing the platinum group metal can be achieved at the relatively low fusing temperature, the content of the platinumgroup metal in the slag can be reduced through slag flotation, the collector is recovered in lixivium, and resources are saved.

The present disclosure generally relates to a method for electroplating (or electrodeposition) a transition metal oxide composition that may be used in gas sensors, biological cell sensors, supercapacitors, catalysts for fuel cells and metal air batteries, nano and optoelectronic devices, filtration devices, structural components, and energy storage devices. The method includes electrodepositing the electrochemically active transition metal oxide composition onto a working electrode in an electrodeposition bath containing a molten salt electrolyte and a transition metal ion source. The electrode structure can be used for various applications such as electrochemical energy storage devices including high power and high-energy primary or secondary batteries.

The invention relates to a high-performance super-capacitor electrode material Co-Fe type prussian blue nano cube as well as a preparation method and application thereof, and belongs to the technical field of electrode material preparation. According to the preparation method, inorganic cobalt salt and potassium ferricyanide are adopted as reaction raw materials, trisodium citrate is adopted as a complexing stabilizer, a liquid-phase precipitation reaction method is implemented, reaction conditions such as the use amount and the stand aging time of potassium ferricyanide are controlled, a Co-Fe type prussian blue nano cube material with good dispersibility and large specific area is prepared, and the size of the material is about 300nm. By adopting the Co-Fe type prussian blue nano cube material provided by the invention, the capacity of an electrochemical electric container is increased, properties such as the rapid charge and discharge property and the service life of the electric container are improved, the capacitance of the electric container is as high as 447F / g in constant current charge and discharge of 5A / g in a 1mol / L sodium sulfate solution, and the good rate capability is achieved.

The invention discloses a thin film transistor and a manufacturing method thereof. Firstly, a gate is formed on a substrate. Then, a gate insulation layer is formed to cover the gate, and a channel layer is formed on the part of the gate insulation layer upon the gate. Later, a source and a drain are formed on the channel layer. The method for forming the gate comprises can be that a nitrogen-containing copper alloy layer and a copper layer are orderly formed and the nitrogen-containing copper alloy layer and the copper layer are partially removed. The method for forming the source and drain can be the same.

The invention discloses a sorbent for MA / RE mutual separation in high-level waste and a preparation method thereof. The sorbent is prepared from 2, 6-di-(5, 6-di-n-butyl-1, 2, 4-triazine-3-radical)-pyridine loaded on macropore SiO2 of a coated polymer, and the mass ratio of the macropore SiO2 to R-BTP is (1-20):1. The sorbent has good identification capability on MA, high adsorption capacity and high recovering rate; when the sorbent is used in an adsorptive separation process, the sorbent does not need to be diluted or dissolved by with diluent of special performance, and can avoid introducing large amount of toxic solvent substances or generating secondary radioactive waste; and the ion diffusion, adsorption and desorption rate of the sorbent are remarkably improved, and the sorbent can run safely under the condition of high flow rate and is a safe and economic sorbent for efficiently mutually separating MA / RE in the high-level waste.

The invention discloses a preparation method of anorthite-quartz-glass phase composite ceramic. The composite ceramic is prepared from desert sand, fly ash, kaolin and cellulose. The anorthite-quartz-glass phase composite ceramic material prepared by the preparation method disclosed by the invention has the advantages that the preparation process is simple; the apparent porosity is 0.5-7%, the bending strength is 70-130 MPa, the coefficient of thermal expansion is (3.0-7.4)*10<-6> / DEG C, and the material can be used for manufacturing conveying pipelines, stock bin linings, heat insulation plates, kiln materials and the like in the industries of machinery, chemical engineering, metallurgy, environmental protection and the like, and can also be used for urban and rural road paving, buildingdecoration and the like.

The invention relates to application of a high-performance supercapacitor electrode material Co-Fe-type Prussian blue nanocube, and belongs to the technical field of electrode material preparation. With inorganic cobalt salt and potassium ferricyanide as reaction raw materials and trisodium citrate as a complex stabilizer, by adopting a liquid-phase co-precipitation reaction method and controllingreaction conditions such as the dosage of potassium ferricyanide and the standing and aging time, the Co-Fe-type Prussian blue nanocube material with high dispersibility and a large specific surfacearea is prepared, and the size of the material is about 300 nm. By means of the prepared Co-Fe-type Prussian blue nanocube material, the capacity of electrochemical capacitors is increased, the rapidcharge and discharge performance and other performance of the capacitors are improved, the service life of the capacitors is prolonged, the capacitance value is up to 447 F / g when constant-current charge and discharge with the current of 5 A / g are achieved in a 1 mol / L sodium sulfate solution, and the material has good rate performance.

The present invention relates to a high capacity solid solution composite positive electrode material preparation method, wherein a metal salt and a hydroxide are subjected to a solid phase reaction at a room temperature to obtain a nano-scale precursor, and then the metal salt in the precursor is adopted as a flux in the subsequent heat treatment process, such that the precursor is subjected to complete contact mixing and diffusion in the flux so as to achieve a rapid reaction purpose, and the solid solution composite positive electrode material xLi2MnO3.(1-x)LiMn0.5Ni0.5O2 is finally prepared, wherein x is 0.1-1.0. According to the present invention, lithium ion battery production products produced by using the solid solution composite positive electrode materials have stable electrochemistry performance, stable cycle performance and good reproducibility; and the preparation method has advantages of easy operation, practical process, good safety, low cost, high product material purity, excellent electrochemical performance and the like.

The invention relates to a carbon quantum dot-CoFe Prussian blue nanocomposite material as well as a preparation method and application thereof, and belongs to the technical field of electrode material preparation. The preparation method is a two-step synthesis method and comprises the steps: firstly, taking potassium citrate as a carbon source of carbon quantum dots, controlling the dosage of potassium citrate, hydrothermal synthesis temperature, hydrothermal synthesis time and other reaction conditions, and preparing a carbon quantum dot solution through a hydrothermal synthesis method; thentaking carbon quantum dots, inorganic cobalt salt and potassium ferricyanide as reaction raw materials, preparing the carbon quantum dot-CoFe Prussian blue composite material with good dispersity byadopting a liquid-phase coprecipitation reaction method, and enabling the size of nanospheres to be about 200-400 nm. When the carbon quantum dot-CoFe Prussian blue composite material prepared by themethod is used as an electrode material, the capacity of a supercapacitor is improved, the rapid charging and discharging capacity of the supercapacitor is greatly improved, and the supercapacitor hasexcellent rate capability and long cycle service life.

The present invention relates to a layered lithium-rich manganese-nickel-cobalt oxide positive electrode material preparation method, which comprises: uniformly mixing a certain molar ratio of metal salts of lithium, manganese, nickel and cobalt, and a hydroxide, carrying out a solid phase reaction at a room temperature to obtain a nano-scale lithium-manganese-nickel hydroxide and a metal salt mixing precursor, adopting the metal salt in the precursor as a flux, heating at a high temperature, melting, and adopting the melting material as a reaction medium, such that the precursor is subjected to complete contact mixing and diffusion in the flux so as to achieve a rapid reaction purpose, and the layered lithium-rich manganese-nickel-cobalt oxide positive electrode material xLi2MnO3.(1-x)LiMO2 is prepared, wherein M is Mn1-(y+z)NiyCoz, x is 0.1-1.0, y is 0.1-0.5, and z is 0.1-0.5. Compared to the gas protection coprecipitation method, the sol-gel method and other methods commonly used for preparing the layered lithium-rich manganese-nickel-cobalt oxide positive electrode material, the method of the present invention has advantages of easy operation, practical process, good safety, low cost, high material purity, excellent electrochemistry performance, and the like.

The invention relates to a controllable preparation method for a graphene-like framework loaded monatomic structure material, and the material can be taken as a material of an energy storage and conversion apparatus. The graphene-like framework loaded monatomic structure material is formed by uniformly loading single metal atoms on a graphene-like framework which is of a hollow film shaped structure, wherein the specific surface area of the material is 600-800 m<2>g<-1>. The controllable preparation method has the beneficial effects that a ZnO doped template is taken as a precursor, so that the template enables doping atoms to disperse well, and a doped MOF shell is formed by low-pressure deposition of gaseous organic ligands; and the doped MOF shell can be used for forming the graphene-like framework loaded stably-dispersed monatomic structure material. The graphene-like framework loaded monatomic material is taken as an electro-catalysis material, and has excellent oxygen reduction catalysis performance. The method has large-scale application potential.

The invention discloses a biomass / carbon nanotube induced Fe3O4 nano composite material and application thereof as a lithium ion battery negative electrode material. The biomass derived carbon / carbon nanotube / Fe3O4 composite material is prepared by a one-step hydrothermal method. A universal method for preparing the conductive metal oxide nanospheres by inducing the carbon material is developed. The biomass porous carbon material is fraxinus chinensis wing peel, is easy to obtain and is environment friendly, and contains a large amount of lignin, and the lignin is a good carbon source. Besides, the carbon nanotubes have good conductivity, and the conductivity of the composite material can be improved; meanwhile, the carbon nanotubes, the biomass-derived carbon and the Fe3O4 form a skeleton structure, the volume expansion of Fe3O4 is relieved, and the skeleton structure has important significance in promoting electron transfer in electrochemical reaction. Therefore, the biomass-derived carbon / carbon nanotube and Fe3O4 composite material has an important application prospect.

The invention relates to a castable and a preparation method thereof, and concretely relates to a zeolite modified cement bonded chromium-containing corundum castable and a preparation method thereof.The purpose of the invention is to solve the problem that the existing Cr2O3-containing refractory castable taking calcium aluminate cement as a binding agent easily causes environmental pollution. The castable is prepared from fine tabular corundum powder, active alpha-Al2O3 micro-powder, fine chromium oxide powder, calcium aluminate cement, zeolite powder, a polycarboxylate dispersant and tabular corundum particles. The preparation method comprises the following steps: weighing and mixing the above raw materials to obtain a premix, adding water, performing stirring to obtain a wet mixture,carrying out pouring and vibration molding on the wet mixture, and finally sequentially carrying out maintenance, drying and heat treatment. The zeolite powder can control migration and diffusion of metal ions and inhibit generation and leaching of Cr (VI) compounds, so that green and environmentally-friendly production is realized; and the sintering densification of the castable is promoted, andthe mechanical properties and the slag corrosion resistance of the chromium-containing castable are remarkably improved. The preparation method is suitable for preparing the chromium-containing castable.

The present disclosure generally relates to a method for electroplating (or electrodeposition) a transition metal oxide composition that may be used in gas sensors, biological cell sensors, supercapacitors, catalysts for fuel cells and metal air batteries, nano and optoelectronic devices, filtration devices, structural components, and energy storage devices. The method includes electrodepositing the electrochemically active transition metal oxide composition onto a working electrode in an electrodeposition bath containing a molten salt electrolyte and a transition metal ion source. The electrode structure can be used for various applications such as electrochemical energy storage devices including high power and high-energy primary or secondary batteries.

The present invention relates to an anode for a secondary battery, comprising at least two anode wires which are parallel to each other and spirally twisted, each of the anode wires having an anode active material layer coated on the surface of a wire-type current collector; and a secondary battery comprising the anode. The anode of the present invention has an increased surface area to react with Li ions during a charging and discharging process, thereby improving the rate characteristics of a battery, and also release stress or pressure applied in the battery, e.g., the volume expansion of active material layers to prevent the deformation of the battery and ensure the stability thereof, thereby improving the life characteristic of the battery.

The invention discloses a cotton-shaped nitrogen-doped carbon silicon composite electrode material and an in-situ preparation method thereof. The in-situ preparation method comprises the steps of focusing a laser beam by a convex lens under an ice bath condition, adding silicon carbide particles into deionized water containing certain ammonium hydroxide to obtain a suspension dispersion liquid used as a liquid-phase target, irradiating under a pulse laser condition, and freezing and drying the suspension liquid after irradiation is completed, thereby obtaining the cotton-shaped nitrogen-dopedcarbon silicon composite electrode material. A high-temperature and high-pressure environment can be generated instantaneously (nanosecond order) by pulse laser, silicon carbide is rapidly broken anddecomposed, carbon atoms and silicon atoms respectively form a cotton-shaped carbon sheet and silicon nanoparticles embedded into the cotton-shaped carbon sheet and nitrogen atom doping, the loosen cotton-shaped morphology is maintained under a rapid cooling effect of an ice bath liquid-phase environment, only one-step in-site laser irradiation is needed, other high-temperature and high-pressure decomposition atmospheres, a reagent and a complicated experiment device are not needed, the process is simple and is low in cost, and the condition is easy to control.

The invention relates to the technical field of castable production, and discloses a special castable with high temperature and alkali corrosion resistance for a smoke chamber of a rotary cement kiln. The invention relates to an explosion-proof spinel brick, which is prepared from the following components in percentage by weight: 30 to 40 percent of spinel micro powder, 10 to 18 percent of aluminate cement, 10 to 15 percent of tabular corundum fine powder, 6 to 18 percent of chromic oxide fine powder, 0.1 to 0.35 percent of polycarboxylate dispersing agent, 1 to 5 percent of zirconium oxide powder, 0.1 to 0.15 percent of water reducing agent, 0.05 to 0.15 percent of organic explosion-proof fiber and the balance of natural mullite with various particle sizes. The raw materials are subjected to grinding, mixing, vibration molding, maintenance and heat treatment to be processed into the castable. According to the invention, the tolerance of the castable to high temperature and alkaline corrosion can be enhanced, the service life of the castable is prolonged, and the use effect is ensured.

The present invention relates to an anode for a secondary battery, comprising at least two anode wires which are parallel to each other and spirally twisted, each of the anode wires having an anode active material layer coated on the surface of a wire-type current collector; and a secondary battery comprising the anode. The anode of the present invention has an increased surface area to react with Li ions during a charging and discharging process, thereby improving the rate characteristics of a battery, and also release stress or pressure applied in the battery, e.g., the volume expansion of active material layers to prevent the deformation of the battery and ensure the stability thereof, thereby improving the life characteristic of the battery.

An ion-selective nanochannel membrane and a preparation method therefor. The ion-selective nanochannel membrane comprises two layers of membranes bonded together, one layer being a segmented copolymer 1 membrane and the other layer being a segmented copolymer 2 membrane. The nanochannel membrane has submicron-order thickness, has a regular nano-scale channel distribution and high porosity, the channel diameter being below 25 nm, and the two membranes having different surface charge distributions. The membrane has ultra-high ion flux, superior ion selectivity, and submicron-order thickness, displaying excellent osmotic energy conversion performance.

The invention belongs to the technical field of chemical engineering, and relates to a black copper sludge dearsenification device and method. Black copper sludge oxidation alkaline leaching operationis carried out in manners of parallel magnetic field applying and air agitation collaborative coupling, in the air injection oxidation process, reaction liquid rotates in an eddy shape, the rotatingface of the reaction liquid is vertical to the magnetic field, a magnetic induction line is cut in the reaction liquid rotation stirring process, magnetic field gradient is borne in the vertical direction, lorentz force is borne in the horizontal direction, and the aims of strengthening ion diffusion, strengthening solution activity and the dissolved oxygen level, improving the oxidizing reactionefficiency, greatly improving the arsenic leaching efficiency, avoiding increase of copper, antimony and bismuth leaching and saving the production cost are achieved.

A zeolite-modified cement combined with a chromium-containing corundum castable and a preparation method thereof relate to a castable and a preparation method thereof. The purpose is to solve the existing Cr-containing calcium aluminate cement as a binder. 2 O 3 Refractory castables are easy to cause environmental pollution problems. The castable is composed of tabular corundum fine powder, active α-Al 2 O 3 It is prepared from micro powder, fine chromium oxide powder, calcium aluminate cement, zeolite powder, polycarboxylate dispersant and tabular corundum particles. Preparation method: weighing raw materials and mixing to obtain a premix, adding water and stirring to obtain a wet mix, pouring and vibrating the wet mix, and finally performing curing, drying and heat treatment in sequence. The zeolite powder in the invention can control the migration and diffusion of metal ions, inhibit the formation and leaching of Cr(VI) compounds, and realize green and environmental protection production; meanwhile, the sintering and densification of the castable is promoted, and the mechanical properties of the chromium-containing castable are significantly improved. and resistance to slag erosion. The invention is suitable for preparing chromium-containing castables.

The invention relates to a carbon quantum dot-CoFe-like Prussian blue nanocomposite material and a preparation method and application thereof, belonging to the technical field of electrode material preparation. The preparation method is a two-step synthesis method. Firstly, potassium citrate is used as the carbon source of carbon quantum dots, and the reaction conditions such as the amount of potassium citrate and the hydrothermal synthesis temperature and time are controlled, and the carbon quantum dot solution is prepared through the hydrothermal synthesis method; Then carbon quantum dots, inorganic cobalt salt and potassium ferricyanide are used as reaction raw materials, and a liquid-phase co-precipitation reaction method is used to prepare carbon quantum dots-CoFe-like Prussian blue composite materials with good dispersion. The size of the nanospheres is about 200‑400nm. When the carbon quantum dot-CoFe-like Prussian blue composite material prepared by the present invention is used as an electrode material, the capacity of the supercapacitor is improved, the fast charge and discharge capability of the supercapacitor is greatly improved, and it has excellent rate performance and long cycle life. .

The invention discloses a preparation method of anorthite-quartz-glass phase composite ceramics. The raw materials of the composite ceramics are composed of desert sand, fly ash, kaolin and cellulose. The composite ceramic material of anorthite-quartz-glass phase prepared by the present invention has an apparent porosity of 0.5-7%, a bending strength of 70-130MPa, and a coefficient of thermal expansion of (3.0-7.4)×10 ‑6 / °C, it can be used to make conveying pipelines, silo linings, heat insulation boards, kiln materials, etc. in machinery, chemical, metallurgy, environmental protection and other industries, and can also be used for urban and rural road paving, building decoration, etc.

The invention discloses a rechargeable magnesium battery and a preparation method thereof. The rechargeable magnesium battery comprises an anode, a magnesium metal cathode, electrolyte, and a diaphragm arranged between the anode and the cathode, wherein active substance of the anode contains iodine; the electrolyte contains magnesium salt. By selecting the active material anode containing iodine and an electrolyte system containing magnesium salt and taking metal magnesium as a cathode, the rechargeable magnesium battery obtains high specific capacity, can realize reverse charging and discharging, and has a higher discharge platform (2.0Vvs.Mg / Mg2+). The rechargeable magnesium battery has the characteristics of high energy density, long service life and better safety. The technical process of the rechargeable magnesium battery is easy to control, and rechargeable magnesium battery has a good industrialization prospect.

The invention discloses a preparation method and application of a functionalized MXene-based conductive composite material, the functionalized MXene-based conductive composite material comprises an MXene conductive composite material, and the preparation method of the MXene conductive composite material comprises the following steps: S1, preparing an MXene material; s2, preparing a graphene oxide dispersion liquid; s3, preparing a nitrogen-carbon dispersion composite material; and S4, mixing and processing the MXene material prepared in the steps S1, S2 and S3, the graphene oxide dispersion liquid and the nitrogen-carbon dispersion composite material to prepare the MXene conductive composite material. The invention relates to the technical field of MXene conductive composite materials. According to the preparation method and application of the functionalized MXene-based conductive composite material, the problems that an existing synthesized MXene material lamellar structure is subjected to polymerization and re-stacking, ions are prevented from entering an active surface, the electrochemical performance of the MXene material is reduced, the flexibility is not high, and embrittlement damage is likely to happen after long-time use are solved.

The invention provides a cobalt-free positive electrode material and a preparation method and application thereof. The cobalt-free positive electrode material comprises a cobalt-free substrate and a coating layer coating the surface of the cobalt-free substrate, the cobalt-free matrix comprises a cobalt-free matrix material, the chemical formula of the cobalt-free matrix material is LiNixMnyO2, x is more than or equal to 0.45 and less than or equal to 0.95, y is more than or equal to 0.05 and less than or equal to 0.55, and x + y is equal to 1; and the coating layer comprises LiTaSiO5. The LiTaSiO5 is coated on the surface of the cobalt-free positive electrode base material, so that the surface impedance of the material is reduced, the ion diffusion of the material is improved, the conductivity of the material is obviously improved, and the rate capability of the cobalt-free positive electrode material is further improved.

The invention relates to a controllable preparation method of a graphene-like frame-loaded single-atom structure material, which can be used as a material in energy storage and conversion devices. Graphene-like frame-loaded single-atom structure material, which is composed of single metal atoms uniformly loaded on the graphene-like frame, the graphene-like frame is a hollow film-like structure, and the specific surface area of ​​the material is 600-800m 2 g ‑1 . The beneficial effects of the present invention are: the present invention uses a doped ZnO template as a precursor, the template not only disperses the dopant atoms well, but also forms a doped MOF shell through low-pressure deposition of gaseous organic ligands, and the doped The MOF shell can in turn be used to form a single-atom structure material with stable and dispersed graphene-like framework loading. This type of graphene framework-loaded single-atom material has excellent oxygen reduction catalytic performance as an electrocatalytic material. This method has the potential for large-scale application.