19 results about "Nanomesh" patented technology

The invention discloses a lithium manganate conductive material and a preparation method thereof, and the lithium manganate conductive material comprises a lithium manganate inner net layer which is a nano network layer formed by connecting lithium manganate crystal grains; the graphene and / or carbon nanotube conductive carbon outer net layer is deposited on the surface of the inner net layer. The lithium manganate crystal grains are uniform and fine, and the crystal grains are of a continuous net-shaped arrangement structure. Dissolving and mixing the polymer nanofiber, manganese salt, lithium salt and M-doped salt to form gel, drying, and carrying out two-stage programmed heating calcination in an oxygen-containing atmosphere to obtain a lithium manganate nano inner net layer; ultrasonically dispersing the lithium manganate nano inner net layer in water, adding acidified carbon nanotubes and / or graphene oxide dispersion liquid, and depositing the acidified carbon nanotubes and / or graphene oxide dispersion liquid on the surface of the inner net layer to form a conductive carbon outer net layer. The obtained lithium manganate conductive material has a continuous large-area two-dimensional network structure, shows high conductivity, high specific capacity and excellent cycling stability, and can be widely applied to the fields of lithium ion batteries, electrochemical lithium extraction, lithium ion adsorption and the like.

The application discloses a preparation method of Al / NH4CuF3 metastable intermolecular complex. The method is characterized in that: firstly, NH4CuF3 with a nano-network structure is prepared through a solvothermal reaction; then, n-Al is filled into the nanopore channels of the NH4CuF3 in a manner of ultrasonic-assisted dispersion, so as to form n-Al / NH4CuF3 MICs with good dispersity. The n-Al / NH4CuF3 MICs prepared by the method can etch a passivation layer and reduce the reaction energy barrier of the aluminum powder and an oxidizing agent, depending on the low-temperature decomposition of the NH4CuF3 to release F and the thermal decomposition of the NH4CuF3 to generate HF. In addition, a large amount of gaseous products are generated by the decomposition of the NH4CuF3, so that the generation of a reaction sintering phenomenon is relieved, and the combustion efficiency of the n-Al is improved.

The application discloses a flexible carbon nanometer net film material and a preparation method thereof, and belongs to the technical field of nanometer fiber electrode materials. The preparation of the flexible carbon nanometer net film material comprises the following steps: dissolving a polymer in a solvent A to obtain a solution B; ultrasonically dispersing the solution B in a solvent C to obtain a spraying net emulsion; wherein the solution B and the solvent C are immiscible; performing electrostatic spraying on the spraying net emulsion to obtain a polymer nanometer net film; performing pre-oxidation on the polymer nanometer net film; applying longitudinal and transverse tension to the polymer nanometer net film under a protective atmosphere; calcining the polymer nanometer net film; and cooling the polymer nanometer net film to obtain the flexible carbon nanometer net film material. The flexible carbon nanometer net film material has an efficient conductive network, exhibits excellent conductive performance and flexibility, and has a wide application in the fields of wearable devices, flexible sensors, energy storage devices and biomedical devices.

This invention relates to a vertically oriented composite cathode, its preparation method, and its application, relating to the field of solid-state batteries. The vertically oriented composite cathode includes a conductive agent, which comprises a graphene nanomesh. The graphene nanomesh has a microporous structure and exhibits a preferred orientation perpendicular to the current collector in the electrode thickness direction. The composite cathode provided by this invention contains a microporous structure and a vertically oriented graphene nanomesh. Through a dual strategy of "opening" and "aligning," a "high-speed tunnel" for ion transport is constructed, significantly shortening the lithium-ion transport path. The tortuosity is reduced from >3.5 in traditional structures to below 1.2, overcoming the shortcomings of existing technologies.

One embodiment of the present invention relates to a composite nanoweb material including a decellularized extracellular matrix and a therapeutic material including same and, more specifically, provides a multiscale nanofiber composite in which a decellularized extracellular matrix and a biocompatible polymer are mixed in various ratios and formed into micro- and nano-sized fibrous structures through an electrospinning process. In addition, another embodiment of the present invention relates to a method for manufacturing a composite nanoweb material and, more specifically, provides a multiscale nanofiber composite having micro- and nano-sized fibrous structures formed through an electrospinning process and a composite crosslinking process.

The invention belongs to the technical field of transparent flexible electrodes, and particularly relates to an all-inorganic transparent flexible electrode and a preparation method and application thereof. The all-inorganic transparent flexible electrode comprises a flexible substrate and a sandwich laminated structure which is formed by sequentially stacking and depositing a first transparent conductive oxide layer, a silver nanowire layer of a nanometer net structure and a second transparent conductive oxide layer on the flexible substrate. The flexible substrate is made of fluorine crystal mica; the first transparent conductive oxide layer and the second transparent conductive oxide layer are the same oxide layer; the first transparent conductive oxide layer is an ITO film or an AZO film, and the second transparent conductive oxide layer is an ITO film or an AZO film. According to the full-inorganic transparent flexible electrode prepared by the preparation method, the sheet resistance is reduced to 14.6 omega / sq while the light transmittance is maintained to be 90% or above, and the bottleneck that high conductivity, high transparency and high temperature resistance of a flexible electrode in the prior art cannot be achieved at the same time is broken through.

This invention provides a dual-network structure membrane composed of nanofibers and nanomesh, and its preparation method. The dual-network structure membrane includes a porous substrate and a dual-network structure loaded on the surface of the porous substrate. The dual-network structure is composed of nanofibers and a low-molecular-weight gel nanomesh. This invention first loads a nanofiber network onto the surface of the porous substrate, and then assembles a low-molecular-weight gel in situ into the nanofiber network. Utilizing the strong interaction between the nanofibers and the low-molecular-weight gel, the low-molecular-weight gel self-assembles on the nanofibers to form a loose yet stable nano-network structure. This enhances mechanical properties while avoiding increasing the packing density and air resistance of the nanofiber network. As a result, the dual-network structure membrane composed of nanofibers and nanomesh exhibits excellent air filtration performance and has promising application prospects in the fields of air filtration and protection.

The invention relates to the technical field of batteries, and provides a base membrane for a composite current collector, a preparation method of the base membrane, the composite current collector, a pole piece and a battery. The base membrane for the composite current collector comprises a porous matrix and a coating layer. Wherein the coating layer is arranged on the surface of at least one side of the porous matrix, the coating layer contains nanocellulose crystals, and the aperture of the maximum hole in the surface of the base membrane is smaller than that of the maximum hole in the porous matrix. The surface of the porous base membrane is coated with the nano cellulose crystals, a layer of compact, uniform and firm nano network is constructed on the surface of the base membrane by utilizing the unique one-dimensional nano fiber structure and the membrane forming characteristic of the nano cellulose crystals, the surface aperture is remarkably reduced, and the penetration problem in the metal deposition process is effectively prevented.

This invention discloses a Zr-Ta-based low-activation refractory high-entropy alloy and its preparation method. After preparation, the microstructure of the Zr-Ta-based low-activation refractory high-entropy alloy transforms from a single-phase structure to a nano-network structure. This nano-network structure consists of a bulk nanophase and a matrix phase, and its unique microstructure synergistically endows the alloy with excellent comprehensive properties: a yield strength of up to 980 MPa, while maintaining a compressive elongation of over 60%, successfully achieving synergistic optimization of mechanical properties and radiation resistance. This preparation method effectively expands the application boundaries of Zr-Ta-based low-activation refractory high-entropy alloys in the field of nuclear structural materials, and the process has advantages such as simple operation, strong controllability, and readily available heat treatment equipment, possessing significant potential for engineering applications.

A method of fabricating semiconducting tellurium (Te) nanomesh. The method includes the steps of preparing a substrate, vaporizing Te powders under a first temperature; and growing Te nanomesh on the substrate using the vaporized Te powders under a second temperature. The first temperature is higher than the second temperature. The rationally designed nanomesh exhibits exciting properties, such as micrometer-level patterning capacity, excellent field-effect hole mobility, fast photoresponse in the optical communication region, and controllable electronic structure of the mixed-dimensional heterojunctions.

The invention relates to a vanadium-niobium bimetallic oxide electrochromic film and a preparation method and application thereof.The electrochromic film comprises conductive glass and a vanadium-niobium bimetallic oxide film on the conductive face of the conductive glass, and the vanadium-niobium bimetallic oxide film comprises two phases of Nb2V2O9 and V3O7, comprising any one of a nano-rod structure, a nano-particle stacking structure or a nano-net structure. The preparation method comprises the following specific preparation steps: dissolving a niobium source, a vanadium source and oxalic acid dihydrate in an ethanol-water mixed solvent, and stirring and dissolving to obtain a precursor solution; inserting FTO conductive glass into the precursor solution, and carrying out solvothermal reaction; and after the reaction is finished, cooling to room temperature, cleaning and drying to obtain the vanadium-niobium bimetallic oxide electrochromic film. Compared with single niobium oxide, visible light-near infrared dual-band regulation and control can be achieved, electrochromic response is achieved in the visible light band and the near infrared band, the light modulation amplitude is large, the color changing voltage range is small, and synthesis conditions are mild.

The invention belongs to the field of porous materials, and particularly relates to a nano mesh material and a preparation method thereof. The preparation method comprises the following steps: providing a porous membrane; the pore channels of the porous membrane are filled with a body material at the temperature ranging from 0.5 Tm to 0.8 Tm, the composite material is obtained, Tm is the melting point of the body material, and the body material comprises a metal material or a semiconductor material; and removing the porous membrane in the composite material to obtain the nano mesh material. According to the preparation method, the material selection flexibility is greatly improved, and meanwhile, the thickness, the aperture and the porosity of the nano mesh material are accurately controlled.

The invention provides a sunlight dynamic regulation transparent heat-insulation aerogel film as well as a preparation method and application thereof, and belongs to the technical field of aerogel materials. The invention provides a sunlight dynamic regulation transparent heat-insulation aerogel film which comprises the following components in percentage by mass: 0.5-1.5% of phase change nanoparticles and 98.5-99.5% of silica aerogel, the phase change nanoparticles are distributed in the silica aerogel, and the silica aerogel is prepared from organic silane containing methyl. According to the invention, a hydrophobic skeleton is constructed by organosilane containing methyl, phase change nanoparticles are added into silica aerogel to form a three-dimensional nano network, and the phase change nanoparticles realize dynamic photo-thermal regulation by regulating and controlling the transmissivity of a sunlight wave band at a specific temperature; the obtained sunlight dynamic regulation and control transparent heat insulation aerogel film has self-adaptive photo-thermal regulation, high light transmittance and super heat insulation performance, and is suitable for the high-end fields of intelligent building curtain walls, spacecraft thermal control and the like.

The invention discloses a thermal insulation coating and a preparation method thereof, and relates to the technical field of coatings. The heat insulation and heat preservation coating is prepared from cross-linked coated modified SiO2 aerogel hybrid microspheres, modified basic slurry, flaky zinc-aluminum powder and polymethylphenyl organic silicon resin, the cross-linked, coated and modified SiO2 aerogel hybrid microspheres are uniformly embedded into a modified basic slurry network, countless tiny heat insulation units are formed in a three-dimensional nano thermal barrier network, heat conduction is effectively inhibited and blocked, the heat insulation and heat preservation performance is improved, meanwhile, the coating is endowed with extremely high hydrophobicity and permeability resistance, the waterproof performance is remarkably enhanced, and in addition, the coating has a good application prospect. The three-dimensional nano network fixedly wraps the cross-linked and coated modified SiO2 aerogel hybrid microspheres, so that not only is the overall mechanical durability improved and the risk of falling off and abrasion reduced, but also the immersion and permeation of a corrosive medium can be further reduced by a compact barrier effect, and the durability of the coating is improved.

The application discloses a kind of mechanically interlocked catenoid structure hydrogel and preparation method thereof, belong to hydrogel sensing technical field.The preparation steps of the mechanically interlocked catenoid structure hydrogel are as follows: first, prepare carbon nano network solution using hydroquinone;Then the carbon nano network solution, acrylamide, water, crosslinking agent and photo initiator are mixed, and are treated under ultraviolet light irradiation, to obtain the hydrogel.A kind of mechanically interlocked catenoid structure hydrogel is constructed by introducing three-dimensional carbon nano network, blending with acrylamide monomer and in-situ radical polymerization.Carbon nano network provides continuous porous skeleton, polyacrylamide segment is embedded in carbon nano network pore during polymerization, and forms stable catenoid structure by physical winding, space nesting and mechanical interlocking.The prepared hydrogel has excellent mechanical properties, adhesion and strain response capacity, and provides reliable and economical material basis for flexible strain sensing function.

The invention discloses a brain-like hydrogen sensor and a preparation method thereof, and relates to the technical field of gas sensing and neuromorphic devices. The brain hydrogen sensor comprises a self-organizing nanometer network, an electrode substrate and a conductivity measurement external circuit, the self-organizing nano-network is formed by depositing hydrogen-sensitive nano-particles on the surface of the electrode substrate, and the self-organizing nano-network is in a conductance critical state; the conductance measurement external circuit is connected with the electrode of the electrode substrate and is used for monitoring a conductance switch event of the self-organizing nano network in real time and detecting hydrogen according to the relationship between the frequency of the conductance switch event and the hydrogen concentration. The brain-like hydrogen sensor realizes real-time, low-power-consumption and high-reliability detection of hydrogen by using an avalanche type dynamic conductivity switch event generated by the self-organizing nano network in a critical state, is easy to integrate with a future artificial intelligence algorithm, and meets the development demand of future intelligent sensing application.

The invention relates to the technical field of materials, in particular to a composite electrode felt with controllable interlayer spacing and a preparation method and application thereof. Comprising the following steps: (1) according to the stoichiometric ratio of a composite electrode material to be prepared, dissolving nitrate in an electrostatic spinning mixed solution, then sequentially adding an excipient and a polyanionic additive, and uniformly mixing to obtain an electrostatic spinning precursor solution; (2) performing electrostatic spinning on the electrostatic spinning precursor solution to obtain a spinning precursor; (3) calcining the spinning precursor to obtain a composite phase oxygen electrode; and (4) uniformly spraying a polyvinyl butyral solution on the surface of the composite phase oxygen electrode, and carrying out plasticizing and drying treatment to obtain the composite electrode felt. According to the invention, the surface tension and charge density distribution of the spinning solution are controlled to control the interlayer distance of the thin film, so that the three-dimensional nano-mesh interlayer distance of the composite electrode is realized, and the mass transfer and mechanical stability of the electrode are balanced.

The invention discloses a method for preparing a high-performance sintered samarium-cobalt permanent magnet material and application. The method comprises the steps that samarium-cobalt alloy containing a nanometer net-shaped SmCu phase is provided, the chemical formula of the samarium-cobalt alloy is Sm (CobalFeaCubZrc) z, a is larger than 0 and smaller than or equal to 0.6, b is larger than 0 and smaller than or equal to 0.2, c is larger than 0 and smaller than or equal to 0.06, z is larger than 6.0 and smaller than or equal to 9.0, and the Sm element and the Cu element in the nanometer net-shaped SmCu phase are distributed in a segregation mode of a net-shaped structure; and sequentially carrying out heat treatment, isothermal treatment and slow cooling treatment to prepare the high-performance sintered samarium-cobalt permanent magnet material. According to the method, the high-performance sintered samarium-cobalt magnet is prepared from the nano net-shaped SmCu-phase samarium-cobalt alloy through the powder metallurgy technology, the squareness, coercive force and magnetic energy product of the Sm (CobalFeaCubZrc) z permanent magnet material are all improved, the method is simple and efficient, and a new way is provided for research and development of the high-performance samarium-cobalt permanent magnet material.