435 results about "Porous substrate" patented technology

A gas separation membrane for separating carbon dioxide includes: a separation layer formed of a polymer material and having a function of selecting and separating carbon dioxide; and a porous substrate including a first porous layer and a second porous layer. The gas separation membrane has a layer thickness T1 of 0.1 μm or more and 10.0 μm or less, an average pore diameter d1 of 10 nm or more and 10,000 nm or less, an aperture ratio A1 of 40% or more and 80% or less, a maximum height roughness R1 of 1 nm or more and 200 nm or less, a layer thickness T2 of 10 μm or more and 1,000 μm or less, a ratio d2 / d1 of an average pore diameter d2 to the average pore diameter d1 of 1.1 or more and 10,000 or less, and a ratio A2 / A1 of an aperture ratio A2 to the aperture ratio A1 of 1.1 or more and 2.0 or less.

The present invention relates to a porous composite structure catalyst comprising a porous substrate and a catalyst coating layer, wherein the catalyst coating layer comprises: a porous support including meso-pores; and a composite catalyst, which is gold nanoparticles impregnated into pores of the porous support.

The invention provides a two-dimensional layered kaolinite nanofiltration membrane, and a preparation method and application thereof, and the preparation method comprises the following steps: mixing kaolinite powder and an intercalator according to a first solid-to-liquid ratio, heating, stirring, carrying out intercalation reaction completely, and carrying out solid-liquid separation to obtain a solid kaolinite intercalation compound; mixing the kaolinite intercalation compound with water according to a second solid-to-liquid ratio, adjusting the pH value of the mixed solution to 9-13, and carrying out dispersion treatment to obtain a kaolinite nanosheet dispersion liquid; enabling the kaolinite nanosheet dispersion liquid to penetrate through the porous basement membrane, and depositing kaolinite nanosheets in the kaolinite nanosheet dispersion liquid on the porous basement membrane to obtain the two-dimensional layered kaolinite nanofiltration membrane; the operation steps are simple, no complex equipment or a large amount of organic solvent is used, and the method conforms to the concept of green chemistry. The prepared two-dimensional layered kaolinite nanofiltration membrane can be used in various fields of water treatment, organic solvent separation and the like, and has a wide application prospect.

This solid electrolyte-containing sheet comprises a first porous substrate and a second porous substrate. A high-concentration binder region is formed at an interface portion between the first porous substrate and the second porous substrate. The high-concentration binder region contains the binder at a higher concentration than other regions in the first porous substrate and the second porous substrate.

An atomization core, an atomizer, and an electronic atomization device are provided. The atomization core includes a porous substrate and a heating element. The porous substrate is a porous glass-ceramic substrate. The porous glass-ceramic substrate, by atomic percentage, includes: 60-65 at % of O and 20-35 at % of Si.

The present application discloses a functionalized separator, a method for preparing the same, a lithium metal battery, and a device comprising the lithium metal battery. The functionalized separator comprises a porous substrate and a functional film layer provided on at least one side of the porous substrate, wherein the functional film layer comprises inorganic particles which are able to reversibly react with metal lithium to form a lithium alloy.

A porous diaphragm, a preparation method therefor, and a use thereof. The porous diaphragm comprises a polyolefin porous substrate, an ionic liquid, and polyethylene oxide. The polyolefin porous substrate comprises a plurality of polyolefin fibrils and pores formed by mutual overlapping of the plurality of polyolefin fibrils. The ionic liquid and the polyethylene oxide are at least attached to surfaces of the plurality of polyolefin fibrils inside the polyolefin porous substrate. Compared with the polyolefin porous substrate, the porous diaphragm has an average volumetric pore size reduced by 40% to 86% and a thickness increased by 1.5% or less. The porous diaphragm has relatively high ionic conductivity, can effectively reduce internal resistance of a battery cell, also has relatively high puncture strength, thereby further improving battery safety performance. Furthermore, it can also avoid problems such as adhesion and delamination that are likely to occur during winding of the porous diaphragm.

The application provides a catalyst, a preparation method and application thereof. The catalyst comprises a porous substrate and an auxiliary agent arranged on at least part of the surface of the porous substrate, the porous substrate comprises a Raney cobalt material, and the auxiliary agent comprises metallic rhenium, an alkali metal and an alkaline earth metal; wherein the Raney cobalt material comprises a Co-S chemical bond. The catalyst provided by the application has excellent activity, and can effectively improve the conversion rate of dinitrile compounds and the selectivity of diamines.

A purpose is to provide an analytical device capable of maintaining good measurement sensitivity even after long-term storage and obtaining a proper potential for selected ions. Provided is an analytical device comprising: a porous substrate; an electrode formed in an inside of, on a surface of, or from the inside to the surface of the porous substrate; an ion selective membrane covering the electrode; and a protective layer, wherein the ion selective membrane comprises a plasticizer; and the protective layer is formed in the inside of the porous substrate as close to at least a portion of the ion selective membrane and comprises a component inhibiting penetration of the plasticizer.

An abrasive article comprises: a substrate comprising strands forming first void spaces between strands; a laminate joined to the substrate, wherein the laminate comprises a surface opposite to the substrate; a resin composition joined to the surface of the laminate. First and second portions of the surface of the laminate have respective first and second surface free energies that are different. Another abrasive article comprises: a substrate comprising strands forming first void spaces between strands; a laminate joined to the substrate, wherein the laminate comprises a first polymer and a second polymer; a resin composition joined to the laminate; In both embodiments, abrasive particles are joined to the resin composition, and a plurality of second void spaces extends through the laminate coinciding with first void spaces in the porous substrate. A method of making abrasive articles is also disclosed.

The present application relates to a heating element, an atomizing core, an atomizer and an electronic atomizing device, the heating element comprising a first heating layer and a second heating layer stacked together, the porosity and the pore density of the first heating layer being smaller than those of the second heating layer. In the heating element of the present application, the surface of the second heating layer facing away from the first heating layer can be connected to the porous substrate in the atomizer, and the liquid atomizing substrate in the atomizer can penetrate into the second heating layer to increase the atomizing surface, so that the atomization is more sufficient to produce a larger amount of smoke, and the atomizing temperature field is more sufficient. On this basis, the first heating layer can prevent the liquid atomizing substrate from penetrating through the second heating layer and from seeping out from the surface of the second heating layer in contact with the first heating layer. Thus, the problem of liquid explosion and liquid collapse of the liquid atomizing substrate on the second heating layer can be avoided, thereby effectively improving the user experience.

A separator for a non-aqueous secondary battery contains: a porous layer that is provided on only one side of the porous substrate, and that contains a resin having at least one bonding group selected from an amide bond, an imide bond, and a sulfonyl bond, in which, in the porous substrate, an absolute value of a difference between a temperature of an endothermic peak observed at 120° C. to 145° C., in a temperature raising process 1, and a temperature of an endothermic peak observed at 120° C. to 145° C., in a temperature raising process 2, is 1.50° C. or higher in DSC measurement when the temperature raising process 1 of continuously raising the temperature from 30° C. to 200° C. at a temperature change rate of 5° C. / min in a nitrogen atmosphere, and the temperature raising process 2 of lowering the temperature from 200° C. to 30° C. and raising the temperature from 30° C. to 200° C., are performed.

A negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the negative electrode are provided. The negative electrode includes: a negative electrode current collector including a carbon layer including a first porous substrate and a carbon-based material existing inside the first porous substrate and a silicon layer including a second porous substrate and a silicon-based negative electrode active material existing inside the second porous substrate; and a negative electrode active material layer arranged on a surface of the negative electrode current collector and including a negative electrode active material.

Composite separators, methods for manufacturing the composite separators, and electrochemical devices including the composite separators are disclosed. In an embodiment, a composite separator includes a porous substrate, and a ceramic layer disposed on at least one surface of the substrate and including inorganic particles and a binder, wherein the binder includes carboxymethyl cellulose having a weight-average molecular weight in a range of 180,000 to 280,000 g / mol and a degree of substitution in a range of 0.6 to 1.2. The composite separator may exhibit excellent mechanical and thermal stability and ion conduction properties.

The invention discloses a preparation method of a durability self-reinforced transparent super-hydrophobic coating based on steel slag. The method comprises the following steps: firstly, co-dispersing steel slag micro powder and a one-dimensional / two-dimensional nano material (such as hydroxylated multi-walled carbon nanotubes, cellulose nanofibers and the like) in an alcohol solvent to form a suspension, and carrying out spraying and high-temperature heat treatment to construct a micro-nano rough porous substrate; then, a solution obtained after hydrolytic condensation of perfluoroalkyl silane is sprayed to the surface of a substrate, and hydrophobic modification is achieved after drying and curing. The coating with the micro-nano hierarchical structure is successfully prepared through the synergistic effect of the micro-nano structure of the steel slag and the low-surface-energy substance in combination with the optimized spraying and heat treatment process. The static water contact angle of the coating is gt; the angle is 150 degrees, and the sliding angle is 1t; the visible light transmittance is gt at 10 degrees; and moreover, the coating shows excellent mechanical wear resistance, environmental stability, self-cleaning property and anti-icing function. The method is simple in process and low in cost, realizes high value-added utilization of the industrial waste steel slag, and has wide application prospects in the fields of building glass, traffic equipment, solar panels and the like.

An apparatus includes a porous substrate and a multi-layer membrane. The porous substrate has a pore structure configured to allow diffusion of hydrogen molecules through the porous substrate. The multi-layer membrane is configured to, in response to contacting a hydrogen molecule present in the gas stream, split the hydrogen molecule into at least one of hydrogen atoms or protons. The multi-layer membrane is configured to allow passage of the hydrogen atoms or protons through the multi-layer membrane while blocking passage of compounds that may be present in the gas stream that are larger than hydrogen molecules. The hydrogen atoms or protons, after passing through the multi-layer membrane, combine to reform the hydrogen molecule. The multi-layer membrane includes a first metallic layer, an intermediate layer, and a second metallic layer.

The invention discloses a double-sided porous polyimide diaphragm as well as a preparation method and application thereof, and belongs to the technical field of polymer diaphragm materials for lithium batteries. The preparation method comprises the following steps: (1) adding a diamine monomer and a dianhydride monomer into a solvent, and reacting to obtain polyimide slurry; (2) coating a porous substrate with the polyimide slurry, and soaking the porous substrate in an aqueous solution containing ethanol to obtain a primarily cured polyimide diaphragm; and (3) taking down the primarily cured polyimide diaphragm from the surface of the porous substrate, and drying to obtain the porous polyimide diaphragm. According to the method, the polyimide slurry is coated in the porous substrate, then soaking, preliminary curing and drying are performed to obtain the double-sided porous polyimide diaphragm, the porosity of the diaphragm is remarkably improved compared with that of an existing porous polyimide diaphragm, the pore size distribution of the two sides of the diaphragm is uniform, and the porosity difference is remarkably reduced; and the wettability and the absorptivity of the diaphragm material on electrolyte are improved.

The application belongs to the technical field of marine environmental protection and functional materials, and particularly relates to a marine oil stain adsorbing material based on a mussel bionic structure, a preparation method and a device, which comprises a porous base material, a polydopamine interface layer and a metal-polyphenol network; the porous base material has three-dimensionally connected pores; the polydopamine interface layer is formed on the surface and internal pores of the porous base material through self-oxidation polymerization of dopamine; and the metal-polyphenol network is formed by coordination of transition metal ions and plant polyphenols on the polydopamine interface layer. By constructing a PDA-metal-polyphenol ternary synergistic interface, efficient capture and firm combination of high-viscosity crude oil are realized, a hierarchical porous structure is induced to form through an ozone rapid polymerization method, and the adsorption kinetics and thermodynamic performance are comprehensively improved, and after saturation of the material, the material can be quickly recovered through an external magnetic field, and regeneration can be realized through pH adjustment or heating.

The invention provides a preparation method of a composite anion exchange membrane and an electrochemical device. The preparation method of the composite anion exchange membrane comprises the following steps: mixing anion exchange resin, a plasticizer and a solvent to obtain blended slurry; respectively carrying out film forming treatment on the blended slurry on two sides of a porous substrate to obtain a composite film; and carrying out ion exchange treatment on the composite membrane by using an ion exchange liquid to obtain the composite anion exchange membrane. A plasticizer is introduced, the plasticizer and anion exchange resin are blended in a solvent to form blended slurry, the plasticizer can be inserted between polymer molecular chains of the anion exchange resin, the interaction force between the polymer molecular chains is weakened, the mobility and flexibility of the molecular chains are improved, and the viscosity of the blended slurry is reduced; therefore, when the blended slurry forms a membrane on the porous substrate, the blended slurry can effectively infiltrate the porous substrate, so that the compatibility between the anion exchange resin and the porous substrate is improved, and the performance of the composite anion exchange membrane is improved.

The invention provides a large-area two-dimensional material film and a defect repairing method thereof, and the repairing method comprises the following steps: uniformly dispersing a dispersion liquid of a two-dimensional material on the surface of a porous substrate to prepare a two-dimensional material film; drying the two-dimensional material film in a protective atmosphere or air, and then placing the two-dimensional material film under a vacuum drying condition; an organic phase solution and a water phase solution are adopted, based on a surface type interfacial polymerization method, a water phase amine monomer and an organic phase acyl chloride monomer are sequentially contacted on the same side of the membrane, and a polyamide repairing layer is generated on the surface of the two-dimensional material membrane in situ and used for repairing surface defects. On the basis of an in-hole type interfacial polymerization method, a water phase solution and an organic phase solution are applied to the two sides of a membrane respectively, the water phase solution and the organic phase solution meet and are subjected to a polymerization reaction in the penetrating defect, a polyamide patch is formed and used for repairing the penetrating defect, and the two methods can be implemented independently or in a combined mode to achieve synergistic repairing of the surface defect and the penetrating defect; the intrinsic structure of the two-dimensional material is not changed, and non-selective channels are remarkably reduced and the performance is improved by a simple and stable process.

The present invention relates to an electrode assembly and an electrochemical device including the same. The electrode assembly of the present invention comprises a unit electrode and a strip-shaped separator. The separator is folded in a zigzag manner, and the unit electrode is inserted into the portion where the separator overlaps. The separator comprises a porous substrate made of a polymer material and a porous coating layer formed on the upper and lower surfaces of the porous substrate, each containing inorganic particles. The thickness (Ts) of the porous substrate gradually decreases from the center of the separator in the longitudinal direction toward both ends, the total thickness (Tc) of the porous coating layer gradually increases toward both ends, and the total thickness (Ts+Tc) is maintained constant across the entire surface of the separator.

A negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same are provided. The negative electrode includes: a negative electrode current collector including a carbon layer and a silicon layer, the carbon layer including a first porous substrate and a carbon-based material present inside the first porous substrate, and the silicon layer including a second porous substrate and a silicon-based negative electrode active material present inside the second porous substrate; and a negative electrode active material layer disposed on a surface of the negative electrode current collector and including a negative electrode active material.

A separator for a rechargeable lithium battery and a rechargeable lithium battery including the separator, the separator including a porous substrate; and a coating layer on at least one surface of the porous substrate, wherein the coating layer includes organic filler particles, fluorine organic binder particles, and (meth)acryl organic binder particles, an average particle diameter of the organic filler particles is equal to or greater than an average particle diameter of the fluorine organic binder particles, and the fluorine organic binder particles are coated on the porous substrate as a part of the coating layer in an amount of less than about 0.1 g / m2 per surface.

An example method includes receiving saline water at a desalination tank, the desalination tank including a porous substrate impregnated with metal particles in a fixed position within the desalination tank, contacting the saline water with the porous substrate to remove impurities from the water, thereby forming treated water, and outputting the treated water.

The present invention addresses the problem that, during measurement using a flow channel device, the formation of a capture antibody–analyte–detection antibody complex becomes insufficient due to high flow velocity of the specimen, resulting in reduction of the sensitivity of examination. In order to solve the problem, provided is a flow channel device for analyzing a test substance, the flow channel device having a flow channel region surrounded by a flow channel wall provided inside a porous substrate, wherein: the flow channel region includes an addition portion for adding a liquid, a ligand portion provided with a ligand, an absorption portion into which the liquid flows, and a connection portion connecting any two selected from the group consisting of the addition portion, the ligand portion, and the absorption portion; the ligand is a substance that specifically binds to the test substance; and any selected from the group consisting of gelatin, PVA, and a PVA block copolymer adheres to at least a part of the inner wall of the flow channel wall.

Adhesive (e.g., medical) articles are described that include a layer of a crosslinked non-functionalized polydiorganosiloxane adhesive composition having a first major surface and an opposing second major surface; and a porous substrate proximate to the first major surface, proximate to the second major surface, embedded within the polydiorganosiloxane adhesive layer, or a combination thereof. The porous substrate is a fibrous substrate or an open-cell organic polymer film. The pores can be formed prior to or after application of the polydiorganosiloxane adhesive composition.

To provide materials and methods for mitigating the effects of halide species contained in a process stream.SOLUTION: The halide-containing process stream may be contacted with an abatement material combined with a solid, porous substrate comprising an active metal oxide and a non-acidic, high surface area support. The halide species in the process stream may react with the abatement material to produce a process stream that is essentially free of neutralized halide salts and halides. The neutralized salt can be attracted to and retained on the solid porous substrate.SELECTED DRAWING: Figure 1

The utility model provides a powder dipping device, a powder applying dipping unit and production equipment for an aerogel composite material. The powder dipping device comprises m electrode assemblies and n alternating current power supply assemblies. M > = 2. N > = 2. M and n are positive integers. The electrode assemblies are sequentially arranged in the advancing direction of the porous base material. The electrode assembly includes an upper electrode member and a lower electrode member. The upper electrode member and the lower electrode member are arranged opposite to each other at an interval in the vertical direction. A dipping channel suitable for the porous base material to pass through is defined between the upper electrode component and the lower electrode component. The n AC power supply assemblies are each connected to different electrode assemblies so as to be able to generate an alternating electric field in the immersion channel of each electrode assembly. According to the utility model, the alternating electric field of at least part of the electrode assembly can be independently controlled.

The invention provides an isolating membrane, a battery monomer and an electric device, the isolating membrane comprises a porous base material and a coating arranged on at least one side of the porous base material, the coating comprises inorganic particles and polymer particles, and the glass transition temperature Tg of the polymer particles is 45-100 DEG C. The isolating membrane is applied to the battery monomer, so that the battery monomer has good cycle performance.

A separator for a rechargeable lithium battery includes a porous substrate and a coating layer on at least one surface of the porous substrate. The coating layer includes a binder, the binder including a copolymer, the copolymer including: a first structural unit including a unit derived from an aromatic unsaturated monomer; a second structural unit derived from a (meth) acrylic monomer containing an alkyl group having 4 or more carbon atoms in the main chain of the ester moiety; and the third structural unit is derived from a sulfonic acid group-containing monomer. The first structural unit is included in an amount in a range of about 5 mol% to about 80 mol%, the second structural unit is included in an amount in a range of about 10 mol% to about 40 mol%, and the third structural unit is included in an amount in a range of about 5 mol% to about 80 mol%, based on 100 mol% of the copolymer.