150 results about "Polymer supported" patented technology

The invention relates to a composite current collector, a composite pole piece, a battery cell, a battery monomer, a battery and an electric device. The composite current collector comprises a polymer supporting layer with the air permeability of 50 s / 100cc to 3000 s / 100cc and a conductive layer with the porosity of 10 percent to 95 percent; the material of the conductive layer is selected from at least one of a metal material, a carbon-based conductive material and a polymer conductive material; the thickness of the negative electrode conductive layer is 200 nm to 3000 nm, and the thickness of the positive electrode conductive layer is 200 nm to 3000 nm. The negative electrode conductive layer and the positive electrode conductive layer are respectively arranged on two side surfaces of the polymer supporting layer. The composite current collector is favorable for improving the energy density of the battery; on one hand, the mass of the current collector can be reduced, and on the other hand, lithium ions in the electrolyte can pass through the negative current collector to reduce the internal resistance of the battery; therefore, the internal resistance, energy density and cycling stability of the battery are improved.

The invention belongs to the field of hydrogen production by alkaline electrolyzed water, and particularly relates to a double-functional-group alkaline electrolyzed water composite diaphragm as well as a preparation method and application thereof. The preparation method of the double-functional-group alkaline electrolyzed water composite diaphragm comprises the following steps: S1, mixing nano ceramic particles with a modification liquid, and performing a modification reaction to obtain amino and sulfydryl double-functional-group modified nano ceramic particles, wherein the modification liquid contains an amino silane coupling agent and a sulfydryl silane coupling agent; the polymer supporting layer is placed in sulfonation liquid to be subjected to sulfonation modification reaction, and then a sulfonated polymer supporting layer is obtained; and S3, mixing the bifunctional group modified nano ceramic particles, a polymer, a pore forming agent and a first organic solvent to obtain a membrane casting solution, degassing the membrane casting solution, coating a sulfonated polymer supporting layer with the membrane casting solution to form a membrane, and performing phase inversion in a coagulating bath to obtain the bifunctional group alkaline electrolyzed water composite membrane. The double-functional-group alkaline electrolyzed water composite diaphragm provided by the invention is good in mechanical property, stable in performance, low in surface resistance and good in air tightness.

The present invention relates to a method for preparing a reverse osmosis membrane and a reverse osmosis membrane prepared thereby. The method comprises the following steps: preparing a polymer solution as a membrane casting solution, and coating a reinforcing material with the membrane casting solution to form a polymer supporting layer; a desalination layer is formed by contacting a polymer support layer with an aqueous phase solution containing an amine compound and an oil phase solution containing an acyl chloride compound in a slit coating manner, in which N slit coating heads are respectively provided in the lateral direction during contact with the oil phase solution so as to respectively form N coating regions, and from the second coating region, N is a positive integer greater than or equal to 1, and N is a negative integer greater than or equal to 2. The coating flow of each coating area is gradually increased relative to the coating flow of the previous coating area; and performing post-treatment to obtain the reverse osmosis membrane. The reverse osmosis membrane prepared by the method provided by the invention has gradual change performance (including gradual change of water flux and gradual change of desalination rate), effectively reduces the flux attenuation of the membrane element in the operation process, and improves the anti-pollution performance.

The invention belongs to the field of functional material preparation, and relates to an MOFs crystal film and a preparation method and application thereof. According to the MOFs crystal film, a porous polymer supporting film is used as a carrier, a high-crystallinity, compact and continuous rigid MOFs crystal layer grows on the surface of the porous polymer supporting film in situ, and a solid / quasi-solid electrolyte system is formed by matching polymer electrolyte or electrolyte. The MOFs ordered pore channel ion screening effect and metal ion sites are used for limiting anions, so that the ion transference number is increased; a physical-chemical synergistic dendritic crystal inhibiting mechanism is realized by utilizing high mechanical strength and a high crystal structure; the low-tortuosity compact ordered MOFs crystal film is used for improving the conductivity, the MOFs electrolyte with wide temperature range stability and high voltage resistance is obtained, and a support is provided for realizing a secondary battery with high energy density and high safety.

The present application provides a composite current collector, and a preparation method therefor and the use thereof. The composite current collector comprises: a polymer supporting layer; a transition layer, which is provided on the surface of at least one side of the polymer supporting layer, wherein the material of the transition layer comprises a nano metal material modified with a silane coupling agent, the nano metal material comprising a nano metal simple substance and / or a nano metal oxide; and a conductive layer, which is provided on the surface of the transition layer along a direction away from the polymer supporting layer. In the present application, introducing the nano metal material modified with a silane coupling agent as a transition layer can tightly combine the organic and inorganic interfaces, and improve the bonding force between the polymer supporting layer and the transition layer; in addition, the particle aggregation degree can be reduced by means of the modification of the silane coupling agent, such that the particles are evenly distributed in the transition layer, thereby improving the bonding force between the conductive layer and the transition layer. The composite current collector has excellent bonding force and stability; and the safety performance and high-temperature cycle performance of a battery prepared on this basis are significantly improved.

The present invention discloses a method for batch preparation of graphene electron microscope grids. The present invention realizes high-quality batch transfer of graphene and electron microscope grids by designing a multi-level transfer medium (including a PDMS porous template, a polymer support layer and a small molecule buffer layer) in combination with a solvent volatilization-induced elastic capillary bonding process. Specifically, the surface of the graphene is uniformly coated with a small molecule / polymer transfer medium layer, and then bonded to the PDMS porous array template. After the graphene is peeled off from the growth substrate, the graphene supported by the polymer film in the suspended part of the PDMS is bonded to the electron microscope grid using a solvent thermal bonding method; finally, the transfer medium is removed to obtain the graphene grid. The method of the present invention has the advantages of simple process, reusable PDMS template and good compatibility, and is suitable for large-scale production. At the same time, the prepared graphene grid has high cleanliness and integrity, and can meet the application requirements in the field of cryo-electron microscope grids.

The invention discloses an anion exchange membrane. The anion exchange membrane comprises: a porous polymer support; the anion exchange polymer is located on the surface and in the pores of the porous polymer carrier, and anion exchange groups of the anion exchange polymer are uniformly distributed on the surface and in the pores of the porous polymer carrier, the porous polymer support has a basis weight of about 10 g / m2 to about 60 g / m2, and the anion exchange polymer may be a crosslinked product of a composition of crosslinkable monomers represented by Formula 1.

The present invention relates to methods for synthesizing MFI zeolite nanosheet (ZN) assemblies and open-pore ZN plates and for tiling ZN plates on polymer supports. Methods for producing ZN assemblies and ZN plates may reduce or eliminate the need to synthesize nanoparticle (NP) seed-evolved single-crystal zeolite nanosheets (ZNs) as an intermediate product. Methods for tiling ZN plates on polymer supports may produce ZN plate-tiled (ZNPT) membranes with reduced permeation through intercrystalline spaces.

The invention provides a positive electrode composite current collector, a positive electrode plate, a secondary battery and an electric device. The positive electrode composite current collector comprises a polymer supporting layer, a conductive layer and a high-resistance layer, and the conductive layer is arranged on at least one surface of the polymer supporting layer; the high-resistance layer is arranged on the surface, away from the polymer supporting layer, of the conducting layer, the resistivity of the high-resistance layer is higher than that of the conducting layer, the total sheet resistance of the high-resistance layer and the conducting layer is R1, and R1 is larger than or equal to 50 m omega / -and smaller than or equal to 80 m omega / -. The positive electrode composite current collector disclosed by the invention can keep normal electrode conductivity, so that the DCR of the battery is in a proper range; therefore, the battery has a high nail penetrating test passing rate, and the safety performance of the battery is improved.

The invention discloses a high-stability anti-pollution high-efficiency composite reverse osmosis membrane and a preparation method thereof, and the method comprises the following steps: dissolving dopamine hydrochloride in a buffer solution to obtain a dopamine solution; dissolving a bio-based surfactant in an amine monomer aqueous solution to obtain a first mixed solution; dissolving multifunctional acyl chloride in an organic phase solvent to obtain a second mixed solution; placing a porous polymer support layer in the dopamine solution, so that one surface of the porous polymer support layer is in contact with the dopamine solution; and sequentially immersing the treated porous polymer supporting layer into a first mixed solution and a second mixed solution, and carrying out post-treatment and drying to obtain the reverse osmosis membrane. According to the composite reverse osmosis membrane with a sandwich structure with dopamine as a middle layer and polyamide as a separation layer, the high-performance reverse osmosis membrane which is controllable and high in permeability and salt saving rate is obtained, and the composite reverse osmosis membrane has the remarkable advantages of being simple in process, convenient to operate, easy to industrialize, economical, durable and the like.

The invention relates to the technical field of organic solid acids, in particular to a preparation method of a controllable release type organic solid acid, which comprises the following steps: (1) preparing a pH and temperature dual-sensitive polymer carrier; (2) loading an acid precursor onto the polymer support; (3) carrying out surface modification on the nano silicon dioxide; and (4) mixing the polymer loaded with the acid precursor with the modified nano silicon dioxide, and preparing the composite microspheres by adopting a spray drying method. The pH-sensitive polymer PDEAEMA and the temperature-sensitive polymer PNIPAM are combined, so that the dual response to the pH and temperature of the reservoir is realized. A tertiary amine group in a PDEAEMA molecule is protonated in a low-pH environment, so that a polymer chain is stretched, and release of an acid precursor is promoted. Meanwhile, the PNIPAM is subjected to phase change when the LCST is higher than the LCST (about 32 DEG C) of the PNIPAM, the hydrophilic property is converted into the hydrophobic property, a polymer network is shrunk, and accurate control over acid release is achieved.

Electrochemical cells and batteries including a polymeric support system in lieu of a conventional, metal-based structures. The polymer support system provides mechanical strength and mechanical flexibility to the electrochemical cells in a manner that is advantageously greater than what is provided by conventional structures, in spite of the fact that the polymer support system contributes far less to the overall weight of the electrochemical cells. The polymer support system may be present in an interior volume of an electrochemical cell, e.g., in the form of a continuous polymeric network penetrating various components of the electrochemical cell. The penetrating structures may include the anode and cathode current collectors, and any / all components therebetween. Additionally or alternatively, the polymer support system may include various forms of external support structures, chemical anchors, coatings and / or casings of the electrochemical cell. Additional advantageous characteristics include improved recyclability and increased longevity of the electrochemical cells.

The invention provides a composite current collector, an electrode plate, a secondary battery and an electric device. The composite current collector comprises a polymer supporting layer, a bonding layer and a conductive layer; the bonding layer is arranged on at least one surface of the polymer supporting layer, and the bonding layer comprises polyimide, inorganic particles and a binder; the conductive layer is arranged on the surface, away from the polymer supporting layer, of the bonding layer. The composite current collector provided by the invention has relatively high elongation at break and tensile modulus, and after the composite current collector is coated with the active material layer and dried, the condition that the tab area of the pole piece is wrinkled and shrunk is not easy to occur.

Disclosed is an anion exchange membrane. The anion exchange membrane includes: a porous polymer support; and an anion exchange polymer, wherein the anion exchange polymer is situated on a surface and in pores of the porous polymer support, anion exchange groups of the anion exchange polymer are uniformly distributed on the surface and in the pores of the porous polymer support, the porous polymer support has a basis weight of about 10 g / m2 to about 60 g / m2, and the anion exchange polymer may be a crosslinked product of a composition including a crosslinkable monomer represented by Formula 1.

The invention relates to the technical field of membrane separation, in particular to a molybdenum disulfide composite membrane and a preparation method and application thereof. The problems that an existing polymer separation membrane is low in interface stability and insufficient in surface hydrophilicity, and in the compounding process of a two-dimensional nano material and the polymer separation membrane, the interface bonding force is weak, the material is prone to loss, and the hydrophilicity and the separation performance are difficult to synergistically improve are solved. The invention relates to a preparation method of a molybdenum disulfide composite film. The preparation method comprises the following steps: 1, depositing MoS2 / Zn (OH) 2 composite particles on a polymer supporting film; step 2, placing the membrane obtained in the step 1 in an organic ligand solution, generating ZIF-8 in composite particles through self-limiting in-situ conversion, and forming a MoS2 / ZIF-8 composite transition layer; 3, the membrane obtained in the step 2 makes contact with a polyethyleneimine solution for grafting, a polyamide layer is formed through interfacial polymerization reaction, and the composite membrane is obtained after curing. The structural stability and flux of the composite membrane are improved, and efficient and stable adsorption and separation of heavy metal ions are realized.

Methods of fabricating electrochemical cells employing polymeric support systems rather than metal-based materials as a protective mechanism against mechanical and electrical damage include assembling components of the electrochemical cell. In addition to an anode, a cathode, and a porous separator, the components include a continuous network of precursors of a polymer support system. The continuous network is arranged in continuous pathway(s) extending throughout the interior of the electrochemical cell. Batteries may be provided with the continuous network of precursors in place, i.e., uncured, and curing may be performed post-fabrication and / or sale. Alternatively, curing may be performed during fabrication (or prior to sale), resulting in a continuous network of polymeric pathways extending throughout the volume of the cell and providing mechanical strength, e.g., by penetrating and physically coupling the various components of the cell. Curing may be performed using various mechanisms, including thermal, kinetic, chemical, and optical.

A reverse osmosis membrane preparation method and a reverse osmosis membrane prepared thereby. The method comprises the following steps: preparing a polymer solution as a casting solution, and coating a reinforcing material with the casting solution to form a polymer support layer; contacting the polymer support layer with an aqueous phase solution containing an amine compound and an oil phase solution containing an acyl chloride compound in a slit coating manner to form a desalination layer, wherein when the polymer support layer is in contact with the oil phase solution, N slit coating heads are arranged respectively in a transverse direction so as to form N coating areas respectively, and starting from the second coating area, a coating flow in each coating area gradually increases relative to a coating flow in the previous coating area; and performing post-treatment to obtain a reverse osmosis membrane. The reverse osmosis membrane prepared by means of the method has gradually changed water flux and gradually changed desalination rate, thereby effectively reducing the flux decline of a membrane element in an operation process and improving the anti-pollution performance.

An anion exchange membrane and a method for producing the same are disclosed. The anion exchange membrane includes a porous polymer support composed of a membrane structure, and an anion exchange polymer. The anion exchange polymer is located on the surface of the porous polymer support and inside the pores, and the anion exchange groups of the anion exchange polymer are uniformly distributed on the surface of the porous polymer support and inside the pores. The anion exchange polymer is a cross-linked product of a composition containing a cross-linkable monomer represented by the following chemical formula 1: [Chemical Formula 1] In Chemical Formula 1, X in JPEG2025523983000012.jpg72170 - is as disclosed in the specification.

The present disclosure relates to electronic devices and methods of forming the same. A method and electronic device are disclosed. The method can be used to allow processing of a thin layer of a workpiece including a die. The workpiece can include a base substrate and a plurality of layers overlying the base substrate. The method can include forming a polymer support layer over the plurality of layers, thinning or removing the base substrate within a component region of the workpiece, where the component region includes an electronic device, and dicing the workpiece into a plurality of dies after thinning or removing the base substrate. In another aspect, the electronic device can be formed using such a method. In one embodiment, the workpiece can have a size corresponding to a semiconductor wafer to allow wafer-level processing rather than die-level processing.

An anion exchange membrane and a method for producing the same are disclosed. The anion exchange membrane comprises a porous polymer support; and an electrolyte containing an anion exchange polymer; wherein the electrolyte is located on the surface and in part within the pores of the porous polymer support; and the anion exchange polymer is also a crosslinking product of a composition containing a crosslinkable monomer represented by the following chemical formula 1 and an ionic monomer represented by the following chemical formula 2: JPEG2026516927000016.jpg56170 In chemical formulas 1 and 2, A, R1, R2, R3, R4, X - , Y - p, q, and r are as disclosed in the specification, respectively.

A composite current collector, an electrode plate, a secondary battery, and an electrical apparatus. The composite current collector comprises a polymer support layer, a bonding layer, and a conductive layer. The bonding layer is disposed on at least one surface of the polymer support layer, and the bonding layer comprises polyimide, inorganic particles and a binder. The conductive layer is disposed on a surface of the bonding layer facing away from the polymer support layer. The composite current collector has relatively high elongation at break and tensile modulus; when an active material layer is coated on the composite current collector and dried, a tab region does not easily crack or shrink.

Provided is a carbon dioxide adsorbing / desorbing material having a high desorption rate.　This carbon dioxide adsorbing / desorbing material contains a carrier and an alkylene imine polymer supported on the carrier, wherein the alkylene imine polymer contains structural units (A) represented by general formula (1), has a number-average molecular weight (Mn) of 200-6000, and has a degree of branching of greater than 0% and no greater than 35%.

A heating plate (1) for the floor of a ship, comprising:-a metal base (3); a metal cover (2); -a polymeric support (4) arranged between the base (3) and the cover (2); -a heating element (5) adapted to generate heat upon energization and arranged between the polymeric support (4) and the cover (2); wherein the base (3) and the cover (2) form a hermetically sealed housing (10), in particular by means of a sealing material; wherein the polymer support (4) and the heating element (5) are arranged in the hermetically sealed housing (10); wherein the base (3) is provided with a peripheral side wall (31) extending laterally from a flat portion (30) of the base (3); the heating plate (1) comprises at least one temperature probe (6a, 6b) or at least one tube adapted to receive a temperature probe, passing through a corresponding first opening (36a, 36b) of the peripheral side wall (31); the respective first opening (36a, 36b) is completely blocked, in particular partially blocked by a respective temperature probe (6a, 6b) or by a respective tube and partially blocked by a sealing material.

The invention belongs to the technical field of membrane separation, and particularly discloses a preparation method of a high-flux pollution-resistant silver bromide / polyamide composite reverse osmosis membrane, which comprises the following steps: firstly, depositing a layer of silver bromide nanoparticles on the surface of a polymer porous support layer; then, m-phenylenediamine and trimesoyl chloride are subjected to an interfacial polymerization reaction on the surface of the porous supporting layer deposited with the silver bromide nanoparticles, and a silver bromide / polyamide composite separation layer is formed on the surface of the porous supporting layer; and finally, inducing the nano silver bromide in the composite separation layer to photolyze by utilizing illumination, forming nano pore channels in the separation layer and releasing silver nanoparticles, and preparing to obtain the high-flux pollution-resistant silver bromide / polyamide composite reverse osmosis membrane. According to the reverse osmosis membrane prepared by the method, the water yield can be remarkably increased while the relatively high desalination rate is maintained, and the reverse osmosis membrane has relatively high microbial pollution resistance.

A material comprising a plurality of gem-metal atom pairs supported on a polymeric support, as well as a method of making the material, is provided. In particular embodiments, the material comprises a plurality of pairs of copper atoms supported on a polymeric carbon nitride (PCN) support. Also provided is a catalyst comprising the material, and a method of catalyzing a coupling reaction.

The application provides a composite current collector, a preparation method thereof and application of the composite current collector in a negative electrode-free lithium metal battery, and belongs to the technical field of battery materials. The composite current collector comprises a polymer support layer and a carbon-based composite material active layer arranged on at least one side surface of the polymer support layer; and the material in the carbon-based composite material active layer comprises carbon nanomaterial and fluorine-containing polymer material. The application takes the polymer support layer as a base material, prepares the carbon-based composite material active layer on at least one side surface of the base material, and obtains the composite current collector. Due to the introduction of the support layer and the synergistic cooperation of the carbon nanomaterial and the fluorine-containing polymer material, the mechanical property of the composite current collector is effectively improved, and the generation of defects in the battery processing and cycling process is avoided. The charge-discharge cycling performance of the negative electrode-free lithium metal battery prepared based on the composite current collector is significantly improved.

The application discloses an integrated polybenzimidazole gradient membrane and a preparation method and application thereof. The preparation method comprises the following steps: applying a first solution containing polybenzimidazole, a polar solvent and a small-molecule sacrificial template to a substrate surface, removing the polar solvent, forming a dense small-molecule solvated polymer support layer, applying a second solution containing polybenzimidazole and a polar solvent to the surface of the small-molecule solvated polymer support layer, removing the polar solvent to form a screening layer, and fusing the small-molecule solvated polymer support layer and the screening layer to form an integrated structure, thereby obtaining an integrated polybenzimidazole membrane. In-situ etching treatment is performed to obtain an integrated polybenzimidazole gradient membrane. According to the application, a high-selectivity separation thin layer is constructed on the surface of the polymer support layer, the hydrophilic narrow ion channel size can ensure ion screening, the trade-off effect of conductivity and selectivity is broken through, and the membrane has high ion conductivity, high mechanical property, high ion selectivity and high stability.

The present invention relates to an ion exchange material for use as a stationary phase for separating anions, preferably haloacetic acids, in an analytical or preparative separation process. The material comprises: - a polymer support; - an acid group directly bonded to the surface of the polymer support, the acid group being selected from the group consisting of sulfonic acid groups, carboxylic acid groups or combinations thereof; - a polymer layer covalently bonded to the surface of the polymer support, the polymer layer containing an anion exchange group. The amount of the acid group ranges from 0.05 to 1.05 mmol / g, preferably from 0.1 to 0.9 mmol / g, particularly preferably from 0.16 to 0.85 mmol / g of the polymer support. The acid group and the anion exchange group are preferably spatially separated by at least 10 nm, preferably at least 50 nm, most preferably at least 100 nm via the polymer layer. The present invention also relates to a method for producing the ion exchange material, a chromatography column having the ion exchange material, a method for chromatographic separation of an analyte and the use of the ion exchange material.

An in-vivo rapid recellularization tissue engineered blood vessel and a preparation method thereof are provided. The preparation method includes: dissolving polyglycolic acid and polyethylene glycol in an organic solvent to prepare a spinning solution, and performing electrostatic spinning according to a certain proportion to prepare a tubular polymer composite support of a special tube wall structure, the fiber on the outer side of the tube wall support containing a higher proportion of polyethylene glycol; planting seed cells on the tubular polymer support of the special tube wall structure, and under certain culture conditions, simulating body arteriopalmus flow conditions and performing perfusion culture for 3 weeks to 3 months; and removing cell components from the tube wall of the obtained engineered blood vessel by using a decellularization method to give a tissue engineered blood vessel composed of an extracellular matrix of a bionic structure.

The invention relates to a preparation method and application of a polymer-loaded cobalt-based heterogeneous catalyst, a metal component is metal Co, and an organic ligand polymer is a polymer which is generated by solvothermal copolymerization of a vinyl-containing heteroatom monomer and a vinyl-containing carbon skeleton monomer and has a large specific surface area and a hierarchical pore structure. When the catalyst is used in hydroformylation reaction, on one hand, metal components and heteroatoms in a polymer carrier stably exist on the carrier due to coordination; on the other hand, the polymer carrier has a large specific surface area and a hierarchical pore structure, and the metal component can exist on the carrier in a high-dispersion manner, so that the solid heterogeneous catalyst has excellent catalytic reaction performance and stability, is easy to separate from reactants and products, and has a wide industrial application prospect.