80results about "Magnesium silicates" patented technology

A negative active material, a method of preparing the negative active material, and a rechargeable lithium battery including the negative active material are disclosed. The negative active material may include a crystalline carbon core and a magnesium (Mg)-included coating layer on a surface of the core, wherein the Mg-included coating layer may include MgO and MgxSiOy (1≤x≤2 and 3≤y≤4).

This application provides a silicon-based negative electrode active material. The silicon-based negative electrode active material includes a silicate containing an alkali metal element. The silicon-based negative electrode active material contains element Mg and element Mn.

The application provides a negative electrode material and a preparation method thereof and a secondary battery, and relates to the technical field of battery materials. The negative electrode material comprises a silicon-based inner core and a carbon layer coated on the surface of the silicon-based inner core, wherein the silicon-based inner core comprises nanosilicon and a silicate containing a metal element M; the negative electrode material is subjected to section analysis and energy spectrum analysis, and meets the conditions of k1<=10, k2<=5 and 0.1 The preparation method of the negative electrode material comprises the following steps: heating and evaporating pre-disproportionated silicon monoxide material and M metal source material to obtain silicon monoxide gas and metal source gas; mixing and condensing the two kinds of gas to obtain an inner core material; and performing carbon coating treatment to obtain the negative electrode material. In the negative electrode material prepared by the application, the metal silicate effectively separates the nanosilicon domain and the silicon oxide domain, and is uniformly distributed, and the negative electrode material has high initial efficiency and excellent cycle performance.

The present invention relates to the technical field of antibacterial materials, and in particular to an antibacterial material comprising black talc and manganese oxide, and a preparation method thereof. The antibacterial material comprising black talc and manganese oxide loaded on its surface, wherein the manganese oxide comprises Mn3O4 and MnOOH. The antibacterial material is obtained by loading manganese oxide on the surface of the black talc using potassium permanganate, urea, and hexadecyltrimethylammonium bromide as raw materials and employing a hydrothermal reaction in-situ synthesis method. The present invention utilizes the unique layered structure of black talc and synthesizes manganese oxide on the surface of the black talc using a liquid phase in-situ synthesis method. The crystal phase and morphology of the manganese oxide are controlled by adding black talc and regulating the synthesis temperature. This material not only improves the stability of the manganese oxide, reduces aggregation, and exhibits high antibacterial properties, but also enhances its biocompatibility, exhibits low cytotoxicity and low hemolytic properties, and is suitable for various biomedical applications.

The invention provides a positive electrode material and a preparation method thereof, a battery monomer, a battery device and a power utilization device. The positive electrode material comprises a sodium transition metal oxide and a silicate material located on the surface of the sodium transition metal oxide, the positive electrode material has the following chemical formula: NaxMyNzO2 / (aNa2O.nSiO2-XrOt.SiO2) b, M comprises one or more of Fe, In, Co, Mn, Ni and Cr, N comprises one or more of Cu, Li, Ti, Zr, K, Sb, Nb, Mg, Ca, Mo, Zn, W, Bi, Sr, Sn, Ga and Al, and X comprises one or more of Na, Li, K, Mg, Ca, Zn, Al, Cr, Sr, Sn and Sb; 0.58 < = x < = 1.05, 0 < y < = 1, 0 < = z < = 1, 0 < y + z < = 1, 1 / 3 < = r / t < = 2, 1 < = n / a, and 0 < b < = 0.2. The positive electrode material provided by the invention can improve the rate capability and the processability of the battery monomer.

The present disclosure relates to methods for producing hydrogen and calcium- or magnesium-bearing carbonates by capturing, converting, and storing carbon dioxide. The methods may include providing one or more calcium- or magnesium-bearing compounds; providing one or more water-soluble oxygenates; providing a plurality of catalysts; and reacting one or more calcium- or magnesium-bearing compounds and one or more water-soluble oxygenates with plurality of catalysts under conditions to produce hydrogen and calcium- or magnesium-bearing carbonates. The methods may include providing one or more calcium- or magnesium-bearing silicates; providing carbon monoxide; providing water vapor; and reacting one or more calcium- or magnesium-bearing silicates, carbon monoxide, and water vapor. The methods may include providing one or more calcium- or magnesium-bearing compounds; providing one or more water-soluble oxygenates; providing a catalyst; and reacting one or more calcium- or magnesium-bearing compounds and one or more water-soluble oxygenates with said catalyst.

The present invention relates to films made of PVOH and phyllosilicates, which are particularly suitable for producing food packaging. The film can be used to produce a layer of a multi-layer packaging. The film can form both a gas barrier and a water barrier and can in particular provide excellent adhesion between layers.

The present invention relates to films made of PVOH and phyllosilicates, which are particularly suitable for the production of food packaging. The film can be used to produce one layer of a multilayer packaging. The film can form both a gas and a water barrier and, in particular, can provide excellent adhesion between layers.

The present disclosure relates to a negative electrode material, a preparation method thereof, and a lithium ion battery. The negative electrode material includes an active material, the active material includes a framework structure and a silicon-oxygen material embedded in the framework structure, the framework structure includes a lithium silicate framework located inside the active material and a water-insoluble silicate framework located on the surface layer of the active material, the water-insoluble silicate framework and the lithium silicate framework are connected, and in the XRD pattern of the negative electrode material, the intensity of the strongest characteristic diffraction peak of the lithium silicate is I A and the intensity of the strongest characteristic diffraction peak of water-insoluble silicates is I B and I B / I A is 0.03≦I B / I A The negative electrode material and the preparation method thereof according to the present disclosure are simple to prepare, low-cost, and suitable for mass production. The prepared negative electrode material can improve processability, and has excellent electrochemical performance, cycle performance, and expansion inhibition performance, and can extend the service life of lithium-ion batteries.

The present invention addresses the problem of providing a novel adsorbent that has a high adsorption capacity and that is capable of adsorbing a substance to be adsorbed with a small amount of use.　The present disclosure provides an adsorbent composed of an amorphous magnesium silicate compound. The magnesium silicate compound according to the present disclosure has an alkali metal content of 1.20 mass% or less. The magnesium silicate compound according to the present disclosure has a solid acid content of 0.70 mmol / g or more.

The present application relates to a negative electrode material and a manufacturing method thereof, and to a lithium ion battery, and belongs to the technical field of energy storage materials. The negative electrode material is Li x M y The Li x M y The SiO4 material and the carbon material both form a network structure, which in the negative electrode material independently form a first skeleton and a second skeleton, respectively, and the first skeleton and the second skeleton are intertwined with each other, and the Li x M y The nanosilicon is distributed in and / or on the surface of a SiO4 material matrix, among which the Li x M y In the SiO4 material, the values ​​of x and y satisfy the charge balance, and M includes a metal element other than Li that can reduce silicon oxide. The negative electrode material has better electrical conductivity, more stable structure, lower volume expansion, higher electrical conductivity, initial efficiency and excellent multiplication performance.

The application provides a palygorskite-based magnesium silicate anthraquinone regenerative catalyst and a preparation method thereof, the chemical formula of the anthraquinone regenerative catalyst is Mg4Si6O15(OH)2·6H2O, and the preparation method comprises the following steps: (1) obtaining a palygorskite-based SiO2 precursor through hydrothermal acidification of palygorskite; (2) uniformly mixing the palygorskite-based SiO2 precursor, an ammonium salt, a magnesium salt and ammonia water through ultrasonic mixing; and (3) transferring the mixed solution to a hydrothermal kettle to generate palygorskite-based magnesium silicate through hydrothermal reaction. The application takes palygorskite as a silicon source and a template, has the advantages of wide raw material source, simple preparation process, low production cost, green environmental protection and convenience for industrialized production, etc. The palygorskite-based magnesium silicate prepared by the application can be used as a solid alkali catalyst, and has the advantages of non-toxicity, environmental protection, high catalytic activity, long service life and the like.

The present invention relates to a secondary battery electrolyte additive comprising milled magnesium silicate, a secondary battery electrolyte comprising same, and a method for producing same and, more specifically, to magnesium silicate for a secondary battery electrolyte additive which is prepared by subjecting a mixture of magnesium silicate and a methyl ethyl ketone (MEK) solvent to primary milling using a bead mill and to secondary milling using a nano mill, as well as to a secondary battery electrolyte comprising same and a method for producing same. The present invention can provide an optimal content of the secondary battery electrolyte additive for enhancing capacity retention in a secondary battery electrolyte, and can provide a method for producing nano-sized magnesium silicate capable of reducing the process time through mechanical milling.

The present invention provides a negative electrode material, a manufacturing method thereof, and a secondary battery, and relates to the technical field of battery materials. The negative electrode material includes a silicon-based core and a carbon layer covering at least a portion of the surface of the silicon-based core, the silicon-based core including nanosilicon and a silicate containing a metal M element; and when the negative electrode material is cut and energy spectrum analysis is performed on the cut surface, k1≦10, k2≦5, and k3≦0.1

The present invention improves at least one of initial efficiency, battery capacity, and cycle characteristics of a non-aqueous electrolyte secondary battery. A negative electrode active material for a non-aqueous electrolyte secondary battery according to one embodiment of the present invention contains porous composite particles containing silicon and a silicon oxide (SiOx, 0 < x < = 2), in which some or all of pores of the porous composite particles are filled with carbon, and some or all of surfaces of the porous composite particles are coated with carbon.

A talc particulate, a polymer composition comprising said talc particulate, methods of making said talc particulate and said polymer composition, and the various uses of said talc particulate.

The present disclosure relates to a method of treating a material comprising a mineral, which comprises subjecting the material to radiant heating, for example a high flux and rapid radiant heating. In a particular form, the mineral is a hydrous mineral.

The invention discloses a preparation method of a fullerene-containing metal wear self-repairing material for a transmission lubricating system, and relates to the technical field of lubricating materials. Comprising the following steps: (1) pretreating raw materials, and preparing artificially synthesized nano hydroxyl magnesium silicate, fullerene-nano indium composite powder and micro-nano composite hydroxyl magnesium silicate powder; (2) preparing a fullerene-indium-copper-lithium quaternary composite dispersion liquid; (3) mixing the micro-nano composite hydroxyl magnesium silicate powder and the composite dispersion liquid in the modified base oil in a gradient manner, and adding an antioxidant and an anti-settling agent; and (4) regulating the particle size to D50 = 500-800nm and the viscosity to 150-200mm / s at 40 DEG C, and carrying out vacuum degassing and packaging to obtain a finished product. According to the method, shutdown-free in-situ repair of the worn surface of the transmission system is achieved, the friction coefficient is reduced to 0.02-0.06, the hardness of the metal surface is improved by 1-2 times, and the service life of equipment is prolonged by one time or above.

Provided is a propylene-based polymer composition which is capable of reducing odor that may occur when exposed to high temperatures in the interior of a vehicle.　Specifically provided is a propylene-based polymer composition which contains a propylene-based polymer and talc, wherein: if the total of the content of the propylene-based polymer and the content of the talc is taken as 100 parts by mass, the content of the propylene-based polymer is 98.5 parts by mass to 55 parts by mass, and the content of the talc is 1.5 parts by mass to 45 parts by mass; the average particle diameter of the talc is 2 μm to 13 μm as measured by a wet laser diffraction method; and the first heating loss in the range of 450°C to 590°C in a differential curve obtained by differential thermogravimetric measurement (DTG) using 10 mg of the talc that is extracted from the propylene-based polymer composition is 60 μg or more and less than 230 μg, and the second heating loss in the range of 620°C to 730°C is more than 0 μg and less than 300 μg.

The invention discloses a process for reducing moisture of talcum powder and improving yield by high-temperature compressed gas, which comprises the following steps of: A, preheating and feeding raw materials, namely starting a system, setting a target moisture value of a final product, setting an initial temperature parameter of each stage of drying unit, and adding wet talcum powder raw materials with the initial moisture content of 2-8% into the drying unit; the wet materials are continuously and stably fed into a multi-stage serial preheating conveyor (for example, the wet materials flow to the second stage from the third stage and finally enter the first stage, and the flowing direction of the hot air is opposite) through a screw feeder or a star-shaped feeding valve, and the wet materials are pre-dried by utilizing waste heat of the system. Deep coupling and synergistic interaction of drying and depolymerization are achieved, moisture is reduced from 0.7% to 0.1% under the conditions of 80 DEG C high-temperature gas and 8 MPa, the yield is increased by 35%, the processes of source high-temperature dehydration, pipeline heat preservation and precise pressure control are integrated, and the industrial pain points of high energy consumption and large moisture fluctuation of traditional rear-section drying are solved.

The invention belongs to the technical field of lithium ion batteries, and relates to a silicon-oxygen negative electrode material, in particular to a front pre-magnesium silicon monoxide negative electrode material and a preparation method thereof.The preparation method comprises the following steps that S1, silicon, silicon dioxide and magnesium oxide are mixed and react under the vacuum heating condition, and a pre-precursor is generated; the heating temperature is 1200 DEG C to 1500 DEG C; the reaction time is 10 to 30 hours; s2, grinding the pre-precursor prepared in the step S1, then carrying out heat treatment in inert gas circulation flow, and cooling to obtain a finished product, wherein the heat treatment temperature is 700-900 DEG C; according to the invention, the initial coulombic efficiency and the long-term use capacity retention rate of the prepared silicon monoxide negative electrode material are improved, and the cycle life of the prepared battery is prolonged.

The present application relates to the technical field of batteries, and in particular to a negative electrode material containing a silicon-based active material and a matrix material, a method for producing the same, and a secondary battery. [Solution] The negative electrode material contains hydrogen, halogen, nitrogen, and sulfur, and the mass content of hydrogen is m H The mass content of the halogen element is m X The mass content of sulfur element is m S The mass content of nitrogen is m N When this is the case, 0.02≦m X / m H ≦5.00, 0.02≦m N / m H ≦20.00, 0.05≦m S / m H The technical solution of the present application adjusts the contents of hydrogen, nitrogen, sulfur and halogen elements within an appropriate range, thereby effectively suppressing the volume expansion of the negative electrode material and improving the capacity, initial coulombic efficiency, powder conductivity, cycle performance and rate performance of the negative electrode material.

The invention provides a preparation method and application of a pre-magnesium silicon oxide negative electrode material, belongs to the technical field of lithium ion batteries, and aims to solve the technical problems of poor initial coulombic efficiency and stability of silicon monoxide. The preparation method comprises the following steps: S1, preparing an alkoxy silane-ethanol / water solution and an alcohol-based magnesium salt-ethanol solution; s2, dropwise adding the alcohol-based magnesium salt-ethanol solution in the step S1 into the alkoxy silane-ethanol / aqueous solution in the step S1, carrying out hydrolysis-condensation chain chemical reaction on alkoxy silane, centrifuging, and drying to obtain a pre-magnesium-silicon-oxygen precursor; and S3, carrying out high-temperature calcination on the pre-magnesium silica precursor obtained in S2 in an inert atmosphere to obtain the pre-magnesium silica composite material. The pre-magnesium silicon-oxygen composite material can be used as a lithium ion battery negative electrode, can effectively improve the initial coulombic efficiency of the silicon-oxygen negative electrode, and considers the volume expansion and cyclicity of the material.

The present disclosure relates to a negative electrode active material for non-aqueous electrolyte secondary battery and a manufacturing method thereof and, more specifically to, a negative electrode active material for non-aqueous electrolyte secondary battery, the negative electrode active material which not only improves conductivity by reacting, silicon, silicon dioxide and magnesium through a gas phase reaction to produce a reaction product and coating carbon on the surface of the reaction product so as to give conductivity to the reaction product, but also exhibits an effect of greatly improving lifetime characteristics and capacity characteristics by showing a structure that is stable in a volume change caused by intercalation or deintercalation of lithium, and a manufacturing method thereof.

This application provides a silicon-based negative electrode active material that contains an alkali metal element-containing silicate and also contains both Mg and Mn elements.

One embodiment of the present invention relates to a porous silicon composite, a porous silicon carbon composite containing the same, and an anode active material, in which the porous silicon composite and the porous silicon carbon composite each contain both silicon particles and a magnesium compound, and have a molar ratio (O / Si) of oxygen (O) atoms to silicon (Si) atoms that satisfies a specific range, and by applying the porous silicon composite and the porous silicon carbon composite to the anode active material, it is possible to realize an excellent capacity retention rate, and to significantly improve the discharge capacity and initial efficiency.

Provided is a talc powder having a B / A value of 0.10 or less wherein A (m2 / g) represents a BET specific surface area of the talc powder and B (% by mass) represents a weight loss determined by a thermogravimetry-differential thermal analysis at 200 to 700°C.

To provide surface-coated particles that have excellent touch, and can reduce a used amount of synthetic polymer fine particles.SOLUTION: A surface-coated particles in which a part or all of the surface of particles (A) is coated with a surface treating agent (B), where the dynamic friction coefficient of the surface-coated particles is 0.50 or less, and the standard deviation of the dynamic friction coefficient is 0.020 or less, the dynamic friction coefficient being measured under the condition of a load of 3.53 N, a moving speed of 10 mm / sec., a moving distance of 50 mm, a reciprocation frequency of 30 times, and a temperature of 25±2°C after applying 5 mass% ethanol dispersion liquid of the surface-coated particles onto a polyurethane substrate in an amount of 2 mg / cm2, and drying for 24 hours under the atmospheric pressure at 23°C.SELECTED DRAWING: None