47 results about "Composite microstructure" patented technology

The invention belongs to the technical field of optical fiber sensing, and discloses a seawater temperature, salinity and depth integrated optical fiber sensor based on a composite microstructure and a preparation method. The single-mode optical fiber, the first coreless optical fiber and the graded-index optical fiber are sequentially welded to form a collimation structure for long-distance transmission of light beams; one end of the graded-index optical fiber is sequentially connected with the hollow-core optical fiber and the second coreless optical fiber; the hollow-core optical fiber core is filled with polydimethylsiloxane, and the filling position of the polydimethylsiloxane is located at the end where the graded-index optical fiber and the hollow-core optical fiber core intersect; the microsphere structure is sequentially divided into a cladding cavity and an air cavity from outside to inside; the end face of one end of the second coreless optical fiber intersects to the air cavity and the cladding cavity of the microsphere structure. Test results show that the seawater temperature, salinity and depth integrated optical fiber sensor based on the composite microstructure has the potential of integrated measurement of seawater temperature, salinity and depth parameters.

The invention discloses a micro-lens optical structure and an optical film, and relates to the technical field of display. The micro-lens optical structure comprises a semi-circular convex hull, a first lens, a second lens and a third lens, the wrinkle structures are arranged on the spherical surface of the semicircular convex hull and are uniformly distributed in the circumferential direction of the bottom of the semicircular convex hull; wherein the plurality of wrinkle structures are arranged by deviating from the symmetry axis of the semicircular convex hull, and are arranged by slotting from the upper surface of the semicircular convex hull to the bottom of the outer edge of the semicircular convex hull according to a preset angle, so that a composite microstructure in which a plurality of arc-shaped grooves are uniformly distributed is formed. According to the invention, the problems of high cost, complex processing technology and light interference defect of the existing diffusion film in the aspect of improving the uniformity of the LED light source and the problem of limited improvement of the picture uniformity and shielding effect of the traditional structure are solved.

The application relates to an intelligent skin multi-modal measurement system and method based on a FBG cone cavity and a bending composite microstructure. The system comprises a sensing module, an optical sensing module, a data acquisition and processing module, a force output module and a temperature control module; the sensing module comprises a flexible skin structure and a cone FBG and bending single-mode fiber composite structure embedded in the inside of the flexible skin structure; the cone FBG and bending single-mode fiber composite structure comprises a cone FBG section and a bending single-mode fiber section integrated in the same optical fiber; the optical sensing module and the data acquisition and processing module are optically connected with the cone FBG and bending single-mode fiber composite structure respectively; the force output module is used for applying a normal force to the flexible skin structure; and the temperature control module is used for providing a constant temperature field for the flexible skin structure. The application can realize accurate measurement of temperature and normal force and complete multi-modal sensing of the intelligent skin.

This invention belongs to the field of fiber optic sensing technology, and discloses an integrated fiber optic sensor for seawater temperature, salinity, and depth based on a composite microstructure and its fabrication method. A single-mode fiber, a first coreless fiber, and a graded-index fiber are sequentially fused together to form a collimation structure for long-distance beam transmission. One end of the graded-index fiber is sequentially connected to a hollow-core fiber and a second coreless fiber. The core of the hollow-core fiber is filled with polydimethylsiloxane, located at the intersection of the cores of the graded-index fiber and the hollow-core fiber. The microsphere structure is divided into a cladding cavity and an air cavity from the outside to the inside. One end face of the second coreless fiber intersects with the air cavity and cladding cavity of the microsphere structure. Test results show that the integrated fiber optic sensor for seawater temperature, salinity, and depth based on the composite microstructure has the potential for integrated measurement of seawater temperature, salinity, and depth parameters.

This invention discloses a method for improving the performance of Q690C steel used in tunnel pre-embedded components. Through microalloying and strict desulfurization and deoxidation during the steelmaking stage, controlling the final rolling temperature of hot rolling / forging (820-880℃), combined with differential zone controlled cooling (7-10℃ / s in thin zones, 3.0-4.2℃ / s in thick zones) and uniform isothermal short-stop (330-350℃×10-15 min), deep cooling after quenching (-80 to -100℃×20-40 min), and two-stage tempering (420-480℃ and 200-260℃), a refined prior-austenite grain, uniform lower bainite / tempered martensite, and nano-precipitate composite microstructure is formed. Its -40℃ impact energy reaches 128-155J, CGHAZ grain size is 6-10μm, retained austenite ≤2.5%, and the toughness, corrosion resistance, and fatigue life of welded joints are significantly improved.

The invention relates to the technical field of semiconductors, and discloses a chromium coating for a photomask substrate, a preparation method of the chromium coating, a photomask and a semiconductor element, the chromium coating is a pure chromium coating and has a single microstructure or a composite microstructure; wherein the single microstructure comprises any one of an amorphous state, a polycrystalline state and an amorphous-nanocrystalline mixed state; the composite microstructure comprises at least two of an amorphous state, a polycrystalline state and a mixed state; and the mixed state is a transition state microstructure of amorphous polycrystalline transformation. By regulating and controlling the microstructure of the pure chromium target, the chromium coating for the photomask substrate can meet the design target of optical density of unit thickness at the wavelength of 193nm under the condition of ultra-thin thickness, so that the three-dimensional mask effect caused by a thick chromium layer is avoided, and the contradiction of insufficient shading of the thin chromium layer is solved. Meanwhile, the mode based on the pure chromium material assisted by magnetron sputtering current regulation and control does not need a complex reaction gas system, the process window is wide, the reproducibility is good, and the method is suitable for industrial batch production.

This invention provides a method and system for discretizing and reconstructing the microstructure mesh of continuous fiber composite materials, relating to the field of image processing technology. The method includes: acquiring slice images from multi-directional industrial CT scans; labeling the slice images; training an image segmentation model using a 2.5DU-Net architecture; inputting the target slice image into the trained model and outputting the image segmentation result; performing image post-processing on the image segmentation result; extracting the geometric parameters of the fiber bundles using Fourier transform and ellipse extraction algorithms, and grouping the fiber bundles into multiple unit cells; establishing a geometric model of the fiber bundle and matrix assembly using the lofting and Boolean operation functions of a geometric modeling library; meshing the geometric model of the fiber bundle and matrix assembly using the Gmsh mesh generator, generating a 3D finite element mesh file, and exporting it as an .inp format file; and obtaining the complete input file by setting a Set collection.

A dense ceramic body includes a composite microstructure having a first solid phase and a second solid phase. The first solid phase includes cerium oxide with cerium in a Ce(IV) oxidation state, and the second solid phase includes a non-cerium-based oxide. An oxygen ion transport phase is also included, forming a continuous network throughout the body. The composite microstructure is embedded within this continuous network of the oxygen ion transport phase. The first and second solid phases are arranged in a nano-sized, phase-separated morphology.

The application discloses a low-modulus titanium alloy with surface wear-reducing / antibacterial composite function microstructure and a preparation method thereof. The titanium alloy comprises a low-modulus Ti-Mo alloy base and Ti5Si3, Ti3SiC2 and Ti3(Cu, Si)C2 micro-porous structures loaded on the surface. The preparation method comprises the following steps: placing MoSi2 powder after corrosion in a CuCl2 solution to form copper ion loaded MoSi2 powder; mixing the powder with medical titanium alloy powder by ball milling, and forming a low-modulus Ti-Mo alloy under the action of high-temperature sintering; and making carbon decomposed from methane gas react with Ti, Si and Cu in the low-modulus Ti-Mo alloy base in situ by a femtosecond laser beam to form Ti5Si3, Ti3SiC2 and Ti3(Cu, Si)C2 micro-porous structures. The process can not only reduce the elastic modulus of the titanium alloy and eliminate the "stress shielding" effect, but also significantly improve the wear resistance and antibacterial property of the titanium alloy.

The invention discloses an Mg-Hg-Ga anode material for a high-power magnesium-air battery as well as a preparation method and application of the Mg-Hg-Ga anode material, and belongs to the technical field of electrochemical energy storage power supply electrode materials, the anode material comprises the following components in percentage by weight: 0.06-0.10 wt.% of Hg, 1.55-1.75 wt.% of Ga, and the balance of Mg and inevitable impurities; the microstructure is a single solid solution structure in which alloy elements are uniformly distributed and no second phase is separated out, a heterogeneous composite microstructure is formed by compounding a grain refining area and a grain growing area, the overall grain size is in continuous single-peak distribution, the peak shape is sharp, the distribution is slightly wide, and a separated double-peak or multi-peak phenomenon does not occur. According to the material, through uniform solid solution and microstructure regulation and control of Hg and Ga, a point-surface synergistic corrosion mechanism is achieved, self-stripping of corrosion products can be promoted in the discharge process so as to keep high activity, and hydrogen evolution side reaction and blocking effect can be effectively inhibited. When the material is applied to the magnesium-air battery, high discharge voltage, high specific energy and high anode utilization rate can be obtained at the same time, and the comprehensive performance of the battery is remarkably improved.

The invention discloses a common nepenthes slippage area imitating super-hydrophobic microstructure design and a preparation method. According to the design of the super-hydrophobic microstructure, a unique moon bone body and a wax crystal structure of a common nepenthes slippage area are used for reference, the moon bone body is approximate to a concave cylinder, the wax crystal is approximate to an irregular blind hole structure, and the super-hydrophobic surface is prepared by utilizing the femtosecond laser ablation characteristic. The method comprises the following steps: establishing a three-dimensional model based on a theoretical model of a composite microstructure of a lunar bone body and a waxy crystal in a common nepenthes slippage area and a droplet infiltration super-hydrophobic microstructure, obtaining an original numerical equation between the composite microstructure and a super-hydrophobic function, namely wettability, and determining characteristic parameters of the corresponding composite microstructure when a contact angle is greater than 150 degrees; and finishing the design of the super-hydrophobic microstructure. A titanium alloy material is selected and polished to 0.8 mu m, the composite microstructure composed of concave cylinders and irregular blind holes is etched in the polished titanium alloy surface by means of the characteristics of femtosecond laser, and chemical fluorination treatment is carried out to prepare the super-hydrophobic surface with the common nepenthes slip area imitating composite microstructure. A new thought is provided for design and preparation of the bionic functional super-hydrophobic surface microstructure, and the method has important scientific significance and application value.

1. Name of the designed product: lens (composite microstructure). 2. Use of the designed product: lens. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: a enlarged view.

This invention discloses an induction heating process for improving the low-temperature toughness of bulb flat steel, comprising: using a composite induction heating method of medium frequency and high frequency, with the heating rate controlled at 15-25℃ / s; heating the bulb head to 900-905℃ and the web to 870-880℃, and holding at this temperature for 2-3 minutes; using a water-polymer solution or a combination of water cooling and air cooling during quenching, with the cooling rate controlled at 15-25℃ / s; and controlling the tempering temperature at 640-670℃, holding at this temperature for 2-3 hours to allow for the complete decomposition of martensite and bainite, resulting in a composite microstructure of ferrite + tempered martensite + fine bainite. The bulb flat steel treated by this process exhibits the following mechanical properties: tensile strength ≥ 620 MPa, yield strength ≥ 520 MPa, elongation ≥ 30%, impact absorption energy at -60℃ ≥ 320 J, and ductile-brittle transition temperature ≤ -80℃.

The application provides a super martensite-bainite complex phase organization and toughening hot forming method, which first changes the structure of an ultra-high strength steel plate into a nanoscale super fine martensite-bainite complex phase organization with dispersed nanometer carbide and interlayer residual austenite film through a process flow of flash heating-high temperature stamping forming-middle temperature short time dynamic distribution-low temperature grading quenching, wherein the dispersed nanometer carbide and the super fine martensite-bainite complex phase organization can realize complex phase organization strengthening, the super fine and dense structure with a small amount of low temperature bainite and the intergranular nanometer thickness residual austenite film can realize complex phase organization toughening, so that the strength and toughness are both increased under the premise of material "simplification", the crash performance and service reliability of the hot forming component are significantly improved, and reliable technical support is provided for automobile light weight and safety.

This application relates to the field of semiconductor optoelectronic device technology and discloses a tilted waveguide semiconductor laser with a composite microstructure. The semiconductor laser includes a tilted waveguide, and the base-side mode forms a zigzag resonant path within the tilted waveguide cavity. This ensures high end-face coupling efficiency of the base-side mode within the tilted waveguide semiconductor laser at different etching depths. An internal microstructure is disposed in the region within the tilted waveguide cavity that does not overlap with the zigzag resonant path; external microstructures are disposed in the regions on both sides of the tilted waveguide that overlap with the zigzag resonant path. Both the internal and external microstructures are used to increase the loss of higher-order side modes, improving the lateral beam quality, and have broad application prospects in fields such as pump sources and space communication.

The present application relates to the technical field of cross-medium grasping, in particular to a bionic cross-medium grasping robot with rigid-flexible coupling variable stiffness material, which adopts a systematic architecture of "material-structure-control" trinity, and comprises: an end effector with a rigid-flexible coupling variable stiffness material layer and a bionic composite structure layer, a sensor array, an excitation device for applying a physical field to the rigid-flexible coupling variable stiffness material layer, and a controller. The controller is specifically configured to: fuse the signals of the sensor array to identify the current medium type; predict the future stiffness demand according to the historical sensor sequence; and control the excitation device to adjust the stiffness of the rigid-flexible coupling variable stiffness material layer, so that it switches between multiple modes including a compliant mode, a rigid mode and a locked mode. The rigid-flexible coupling variable stiffness material realizes large-range stiffness regulation, the suction cup-bristle composite microstructure realizes stable adsorption in dry / wet environments, and the multi-modal perception and LSTM prediction realize medium adaptive control.

The application discloses a numerical simulation method for laser surface remelting microstructure of particle reinforced magnesium matrix composite, and belongs to the technical field of numerical simulation of composite microstructure.The application solves the problem that the existing numerical simulation method does not fully consider the interaction between dendrite growth and particle movement.Based on the electron probe experimental characterization result, the application takes the real solid phase composition field of the as-cast state as the initial condition of calculation, more truly reproduces the actual solidification process, simultaneously carries out coupling calculation on the microstructure evolution and particle movement, adopts the cellular automaton technology to simulate the magnesium alloy existing the reinforcing particles, considers the influence of the dendrite growth on the particle movement, can realize the numerical prediction of the microstructure of the laser surface remelting particle reinforced magnesium matrix composite, and can more accurately predict the microstructure formation and particle migration in the molten pool in the laser melting metal process.The method can be applied to the numerical simulation of the microstructure of the particle reinforced magnesium matrix composite.

The application discloses a high-performance flexible piezoresistive pressure sensor and a preparation method, relates to the technical field of flexible pressure sensing, and comprises an upper flexible packaging layer, an upper sensing electrode, a composite microstructure sensing layer, a lower sensing electrode and a lower flexible packaging layer. The composite microstructure sensing layer is provided with an array of concave micro-hemispheres arranged symmetrically upwards and downwards. By utilizing the stress concentration effect of the concave structure and the synergistic deformation mechanism of the elastomer material, efficient transformation of the microstructure from linear contact to stable surface contact during the pressure process is realized. Compared with traditional plane, convex or pointed microstructure, the application significantly improves the pressure response sensitivity, and the symmetrical structure ensures the uniformity of deformation and the stability of signal output, effectively solves the problems of low pressure area response insensitivity and signal drift in the prior art, and is especially suitable for dynamic pressure detection scenes.

The invention discloses a laminating adhesive layer structure, a laminating film and a display device, and relates to the technical field of optical films. The laminating adhesive layer structure comprises a first base material layer, a second base material layer and an adhesive layer, the microstructure attaching layers are sequentially and sequentially arranged on the first base material layer in an adjacent array mode in the preset direction; wherein the microstructure bonding layer is composed of a plurality of linear columnar prism structures so as to form a discontinuous bonding surface. According to the invention, the problems that various existing laminated film brightness improvement schemes are mainly based on redesign of lower prism layer microstructure matching, although the peak end of a low prism can be protected by means of the height difference of the structure, the mold processing of the composite microstructure is time-consuming and labor-consuming, the mold manufacturing cost is greatly improved, and the manufacturing cost is reduced are solved. And cost control during mass production is not facilitated.

The invention belongs to the technical field of sensor preparation, and discloses a flexible sensor based on a root shrinkage structure and a preparation method thereof.The preparation method of the flexible sensor based on the root shrinkage structure comprises the steps that a PDMS prepolymer and a curing agent are mixed and then stirred for the first time, and a mixed solution is obtained; and mixing the carbon nanotube suspension and the mixed solution, then carrying out secondary stirring to obtain a PDMS-carbon nanotube composite solution, injecting the PDMS-carbon nanotube composite solution into a mold with a shrinkage structure array, and sequentially carrying out vacuum drying and curing to obtain a PDMS-carbon nanotube composite microstructure conductive layer, and carrying out vacuum drying and curing on the PDMS-carbon nanotube composite microstructure conductive layer to obtain the PDMS-carbon nanotube composite microstructure conductive layer. The two PDMS-carbon nano tube composite microstructure conducting layers are installed in an embedded mode, a dielectric layer is obtained, a lower electrode, the dielectric layer and an upper electrode are sequentially bonded and stacked from bottom to top, and a flexible sensor is obtained; according to the invention, the performance of high sensitivity, wide range, high response speed and long durability can be met.

The application discloses a front light guide plate process, comprising the following steps: using modified PMMA plate as a base material and cleaning the surface and pre-setting a functional layer, performing an embossing process on the surface of the light guide plate base material, one-time forming a bottom layer groove-protrusion microstructure and a top layer prism array through a composite mold, depositing an anti-reflection coating on the surface of the light guide plate semi-finished product with the composite microstructure, stacking TiO2 / SiO2 multilayer films layer by layer, and real-time regulating the coating thickness to target optical parameters; integrating an embedded heat dissipation layer on the back of the light guide plate with the coating, generating a graphene heat conduction grid by using a laser induction technology, and detecting the optical performance and structural quality of the finished light guide plate; the light guiding efficiency is significantly improved through the composite microstructure design, the brightness and uniformity of the light guide plate are improved, the multilayer anti-reflection coating reduces the surface reflectivity and reduces light loss, the laser-induced graphene heat dissipation layer effectively solves the heat accumulation problem under high brightness, improves the product performance, and outputs a high-brightness and high-uniformity light guide plate.

The present invention discloses a method and device for preparing a composite microstructure that mimics hair follicles. The present invention utilizes the thermal deformation properties of a memory alloy material, inserting an electrode deformation segment made of the memory alloy material into a laser-machined pit on the surface of a tool, causing the deformation segment to heat and become an arc shape. An electrochemical etching method is then used, using an electrochemical system formed by an electrode, a tool, a power supply, and an electrolyte in the pit, to cause the rotating electrode to etch the pit into a hair follicle structure. Flocking glue doped with magnetic particles is then injected into each hair follicle structure, and a fiber bundle is implanted in each hair follicle structure. After flocking is completed, the magnetic particles in each hair follicle structure are magnetized, thereby completing the preparation of the composite microstructure that mimics hair follicles on the tool surface. The composite microstructure that mimics hair follicles on the tool surface prepared by the present invention enables the tool to achieve a continuous wetting effect during operation, has good wetting properties, and thus improves the cutting performance of the tool.

The application discloses a kind of quasi-continuous net-like titanium-based composite based on additive manufacturing and method thereof, specifically a kind of preparation method of quasi-continuous net-like titanium-based composite for adjustable reinforcing phase content and net size, belongs to the field of titanium-based composite microstructure design.The preparation operation process includes: metal and reinforcing phase powder screening and pretreatment;Low-energy ball milling powder mixing;Printing pretreatment;Setting additive manufacturing printing parameters;According to the set parameters, block printing is carried out.The method makes the net structure size, reinforcing phase content flexible and controllable, and has the characteristics of saving raw materials, simple operation, high dimensional accuracy, etc., and has better and more balanced mechanical properties after testing.

The utility model discloses a composite microstructure lens and glasses. The composite microstructure lens comprises a lens body, and the lens body is provided with an optical center and an edge. In the direction extending from the optical center to the edge, the lens body is provided with a central area and a microstructure area which are sequentially arranged around the optical center; the central area comprises a bright vision area and a transition zone, and the bright vision area surrounds the optical center; the transition zone is located between the bright vision zone and the microstructure zone and connected with the bright vision zone and the microstructure zone. And the microstructure array is arranged in the microstructure area, is connected with the lens body and is used for being matched with the lens body to generate an optical stimulation signal. By introducing the transition zone between the bright vision area and the microstructure area, high adaptability and compliance can be maintained in a smaller bright vision area, and the functionality influencing myopia progress can be enhanced under the condition that the lens wearing adaptability is not influenced.

This invention discloses a method for improving the microstructure and properties of steel used in marine engineering, belonging to the field of steel material hot working and microstructure control technology. This method constructs a synergistic process system of "deep-penetration high-reduction rough rolling—three-stage gradient finish rolling—dual-zone red-heat steady-state temperature control—regional strengthening quenching—low-temperature self-tempering homogenization," ensuring consistency in temperature, deformation, and phase transformation processes between the surface and core of thick-gauge marine engineering steel. Ultra-low speed high-reduction rolling achieves sufficient core deformation, and dual-zone red-heat and regional quenching technologies increase the core cooling rate by 60–100%, followed by short-time self-tempering to form an ultrafine ferrite-bainite composite microstructure. 60–100 mm thick marine engineering steel treated by this method exhibits a core impact value exceeding 80 J at -40°C and maintains 50–65 J at -60°C, with a 55–62% improvement in seawater corrosion resistance, significantly enhancing the consistency of properties in the thickness direction and reliability in extreme environments.

The invention discloses a composite Si / Al buffer layer and a preparation method and application thereof. The preparation method of the composite Si / Al buffer layer comprises the steps that a composite buffer layer structure precursor is manufactured and formed, the composite buffer layer structure precursor comprises two or more Al layers and one or more Si layers which are arranged in a stacked mode, and one Si layer is distributed between every two adjacent Al layers; and performing heat treatment on the precursor in the presence of at least an N source, so that part of Al atoms in the more than two Al layers and part of Si atoms in the more than one Si layer are mutually soluble and diffused, and the Al atoms and the Si atoms in the composite buffer layer structure precursor are respectively combined with N atoms provided by the N source to form AlN and SiN, therefore, a composite buffer layer structure is formed, and the composite buffer layer structure is provided with a composite microstructure formed by mixing SiN and AlN. The stress distribution uniformity of the epitaxial wafer can be improved, the residual stress in the epitaxial layer can be reduced, and the method is suitable for growth of large-size epitaxial wafers.

The invention discloses a visual angle expanding film and a display device, and relates to the technical field of optical films. The visual angle expanding film structure comprises a base material layer, a transparent film layer and a transparent film layer, the multiple polyhedral structures are arranged on the base material layer in a spaced array mode in the preset direction; the plurality of prism structures are sequentially arranged between the adjacent polyhedral structures in an equally divided array manner; wherein the number of the prism structures between the adjacent polyhedral structures is 1-5, and an array is alternately extended to form a composite microstructure, so that the composite microstructure has wide viewing angle and high-brightness optical performance. According to the invention, the problem of poor use effect caused by excessive reduction of the brightness of the central view angle due to the limitation of a single microstructure in the current wide view angle processing method is solved.

The invention discloses a rolling method for improving the structure and performance of a corrosion-resistant and low-temperature-resistant steel bar, and belongs to the technical field of ferrous metallurgy and hot working. According to the method, on the premise that constant chemical components are adopted, a synergistic process system of ultra-low-speed large-pressure rough rolling, step-by-step speed reduction finish rolling, double-area self-reddening stable structure and three-section type cooling precise phase control is constructed; in the rough rolling stage, the speed is reduced to 0.35-0.55 m / s, the reduction rate of the last three passes is increased to 55-60%, and core deformation is greatly increased; in the finish rolling stage, dynamic recrystallization and deformation induction ferrite transformation are promoted through step-by-step speed reduction; two temperature zones of 680-700 DEG C and 600-620 DEG C are arranged in the re-reddening stage so as to stabilize a recrystallization structure; and finally, the superfine ferrite-granular bainite composite structure is obtained by adopting a three-section cooling system of rapid cooling, medium-speed cooling and short-time self-tempering. The low-temperature impact toughness and the corrosion resistance are remarkably improved.

The application discloses a silicon-carbon nanometer composite material and a preparation method and application thereof, and belongs to the technical field of lithium battery materials. The method comprises the following steps: preparing a graphene-isolated and dispersed nanometer silicon suspension; preparing graphene-isolated and dispersed nanometer silicon powder; preparing polymer-blended and modified nanometer silicon particles; obtaining Si / GNP@1C through primary carbonization; coating pitch by adopting a solvent method, and obtaining Si / GNP@2C through secondary carbonization after drying; and obtaining a silicon-carbon nanometer composite material finished product through screening after airflow vortex micronizer crushing. The preparation process has the characteristics of greenness, energy saving and environmental protection, and the ternary nanometer composite microstructure well solves the problems of poor conductivity and battery performance deterioration due to expansion of silicon as a lithium ion negative electrode material.