11 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.

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 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 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 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.