1371results about How to "The method is simple" patented technology

The invention provides a super-hydrophobic nanometer transparent coating and a preparation method thereof and belongs to the technical field of super-hydrophobic paint. The method includes the steps that firstly, a first category of inorganic nanometer particles are added into an organic solution, and ultrasonic dispersion is performed; secondly, dispersing agents and a second category of inorganic nanometer particles are added, and ultrasonic dispersion is performed so that a dispersion solution can be obtained; crosslinking agents and additives are added in the dispersion solution, ultrasonic dispersion is performed, finally, low-surface energy polymers are added, mixtures are evenly mixed, and transparent and clear super-hydrophobic paint is obtained; the surface of a solid base materials is coated with the transparent and clear super-hydrophobic paint, and the super-hydrophobic nanometer transparent coating is obtained through low-temperature thermal drying and curing. The super-hydrophobic performance of the super-hydrophobic nanometer transparent coating prepared through the method is excellent, the contact angle can be 160 degrees, the rolling angle is 1-7 degrees, the super-hydrophobic nanometer transparent coating can be sprayed to the surfaces of most of common materials, the morphology of the surfaces of the materials are not changed, and the application prospects and the application potency are very wide.

The invention relates to a three-dimensional dwelling size modeling method based a two-dimensional dwelling size diagram, which comprises the following steps: (1) constructing a database consisting of two-dimensional dwelling size diagram modeling elements and three-dimensional dwelling size diagram modeling elements; (2) selecting the two-dimensional dwelling size diagram in the form of an imageformat and performing vectorization on the two-dimensional dwelling size diagram on the basis of the database consisting of the two-dimensional dwelling size diagram modeling elements and the three-dimensional dwelling size diagram modeling elements; and (3) automatically constructing the three-dimensional diagram on the basis of the vectorized two-dimensional dwelling size diagram. The inventionprovides a three-dimensional dwelling size modeling method based on a two-dimensional dwelling size diagram, which has the advantages of low modeling difficulty and high efficiency.

The invention relates to the technical field of image processing and particularly discloses an image acquisition-analysis method. The image acquisition-analysis method includes the steps as follows: step 1. making a plurality of rulers and putting the rulers on every row of supermarket shelf, wherein each ruler is provided with multiple groups of codes; step 2. acquiring images of the shelves on which the rulers are put on; step 3. separating color channels on the collected images and detecting the codes of rulers on the separated channels; step 4. correcting the images according to the detection result of the codes; step 5. dividing out zones including goods in the corrected images according to the detection result on the codes; and step 6. classifying the goods on the zones by utilizingcolor characteristics and local textural characteristics, thus obtaining relevant information of goods arrangement. With the image acquisition-analysis method, the information of the arrangement place, the quantity and the like of the goods on the shelves can be efficiently and correctly obtained. The image acquisition-analysis method is simple, convenient and feasible and saves large amount of manpower and material resources.

The invention discloses a graphene-based ternary composite film gas sensor and a preparation method thereof. The graphene-based ternary composite film gas sensor consists of a ternary composite film and a substrate, wherein the ternary composite film is formed by compounding graphene, metal or metal oxide nanoparticles and conducting polymers. The high specific surface area and excellent electric and physicochemical characteristics of the graphene and the nanoparticles and the specific gas-sensitive response characteristic of the conducting polymers are fully utilized, a gain complementary mechanism is formed between different materials due to ternary compounding, and the gas-sensitive characteristic and stability of the system are enhanced. Meanwhile, the preparation method is combined with a self-assembling process with high ordering property and can be used for preparing the high-sensitivity room temperature detection gas sensor.

The invention discloses a method for amination of a carbon nano tube, relating to a method for amination and solving the problems of complicated process and low nitrogenous functional group introduction efficiency of the existing method for modification of the carbon nano tube. The method is as follows: first, putting the pre-treated carbon nano tube into a supercritical reactor for reaction; and second, washing the products from the first step through distilled water and then vacuum drying under 55-65 DEG C. In this way, an aminated carbon nano tube can be prepared. The method is simple in process, and the analysis of the infrared spectrum diagram and infrared X-ray electron spectrum diagram of the aminated carbon nano tube prepared through the method shows that the nitrogenous functional group introduction efficiency through the method is high.

The invention relates to a handling method of organic wastewater. The method comprises using an active carbon material loaded with metal phthalocyanine to adsorb organic pollutant in the wastewater, immersing the active carbon material in water solution including oxidizer after saturation absorbing, or directly adding the active carbon material loaded with metal phthalocyanine and the oxidizer into the organic wastewater, catalyzing and degrading the organic pollutant, thereby the active carbon material is capable of regenerating and being used repeatedly. The handling method can be used for handling various organic wastewaters like phenol organic wastewater which is difficult to degrade, dye waste and the like or recycling intermediate water. The invention has the advantages of simple method, low costs, perfect treatment effect of the organic wastewater and the like.

The invention provides a hand-eye calibration method for a laser line structured light sensor. The hand-eye calibration method includes the steps that a sensor coordinate system is established on the sensor, a structured light stripe is generated from a structured light plane projected by a mid-laser device of the sensor to a target, the pose of a robot is adjusted, the stripe and a straight line on a calibration template are intersectant to form feature points, and a pose parameter of the robot and output data of the sensor of this moment are recorded; outputting of the sensor is combined with geometrical parameters of the sensor, and three-dimensional coordinates, under the sensor coordinate system, of all the points on the laser stripe can be obtained; the feature points generated when the stripe and the straight line on the calibration template are intersectant are extracted. The process is repeated, N sets of different robot pose parameters and the feature points corresponding to all the parameters are obtained, the calibration problem is converted into the least square problem through N sets of data collected under a constraint of space straight lines, and the problem is solved through the optimization algorithm. The hand-eye calibration method is simple and convenient and easy to conduct, the position and the pose are accurately controlled, the efficiency is high, the quality is good, and the hand-eye calibration method has the high practical value.

The invention discloses a nano-emulsion medicine for treating foot rot. The grain diameter of the nano-emulsion is in a range of 1-100 nanometers and the nano-emulsion is composed of the following raw materials: 0.1-10.0% of pine tar, 0.1-6.0% of cinnamyl aldehyde, 0.1-6.0% of carvacrol, 0.1-5.0% of camphor oil, 0.01-0.1% of clobetasol propionate, 18.0-35.0% of surfactant, 0-7.0% of co-surfactant and residual amount of distilled water; and the sum of the mass percentages of the components is 100%. The nano-emulsion disclosed by the invention has the functions of dissolving cutin, relieving itching, diminishing inflammation, restraining, partially disinfecting and resisting corrosion, accelerating absorption and the like, and is mainly used for treating animal foot rot. According to the nano-emulsion medicine for treating the foot rot, the solubility of the medicine is increased, the medicinal stability and the biological utilization rate are improved, the dosage of the medicine is reduced, the skin transmission rate is higher than that of common preparations including a medicinal extract and the like, and the cost is low, so that the nano-emulsion medicine has a wide market prospect in a veterinary medicine field.

The invention relates to a method for preparing graphene on a copper plating substrate. The method is characterized by comprising the following steps of: preparing the graphical copper plating substrate on a silicon chip; and growing the graphene on the copper plating substrate for 2 to 5 minutes at the temperature of between 800 and 1,000 DEG C by using a normal pressure chemical vapor deposition method, using methane as a carbon source and using argon and hydrogen as carrier gases. A graphical graphene film can be directly prepared by the method, and the substrate can be compatible with an integrated circuit (IC) process; and the manufacturing method is simple and low in cost, and can be used for large-scale manufacture.

The invention belongs to the field of mine safety, relating to a method for identifying rock mass failure instability early warning by utilizing stress displacement monitoring. The method is characterized by comprising the following steps of: determining a monitoring area in an excavated rock mass and numbering, monitoring stress and deformation changes of the rock mass by utilizing a borehole stressmeter and a multipoint position extensometer and monitoring in real time, converting a tangent modulus value of the rock mass, mastering a change trend of the tangent modulus value of the rock mass, and judging whether the rock mass failure instability early warning is carried out or not. The method disclosed by the invention is simple in construction, low in cost, good in effect, has better reliability and early warning accuracy, has the capabilities of shortening the time of the rock failure instability early warning, improving the safety environment of construction and avoiding the losses of labors and devices, and is suitable for the fields of mines, tunnels, side slopes, hydropower station chambers and the like formed by excavating the rock mass.

The invention discloses a preparation method and the application of a catalytic material for transition metal carbides, belonging to the preparation technical field of the catalytic material. The invention is characterized in that in the method, carbon material, oxide or molecular sieve, and the like, are used as vectors and transition metal compounds are used as precursors. The vectors and the transition metal precursors are mixed by dipping or mechanical method and a microwave-assisted chemical sedimentation method is adopted to prepare the catalyst for loaded transition metal carbides. The weight percentage of loading of the transition metal compounds is 1-200 percent. Particles of the catalyst for the loaded transition metal carbides are highly uniformly distributed on the surface of the vectors. And the catalyst can be applied to a plurality of reactions of electrocatalysis oxidation of methanol, hydrazine decomposition, acetonitrile hydrogenation, etc. The preparation method and the application have the beneficial effects of simple preparation process and easy operation. And the obtained catalytic material shows high activity in the electrode reaction and a plurality of catalytic reactions of fuel cells.

The invention discloses a simple chemical vapor deposition (CVD) method for synthesizing a g-C3N4 ultra small quantum-dot modified titanium oxide nanotube catalyst. According to the invention, the previously synthesized titanium oxide nanotube array is used as the base, a precursor is firstly placed in a crucible, through adopting the high temperature treatment method, the precursor is enabled to become steam, and deposited in the titanium oxide nanotube, then the precursor is condensed into nucleuses in the titanium oxide nanotube to form g-C3N4 of the quantum dot. Due to the obtained catalyst in the visible light, the material is enabled to have the hydrogen producing performance in the visible light by utilizing the photoelectrocatalysis device. According to the invention, the CVD method is adopted to calcine materials in a muffle furnace to obtain the photocatalyst with visible-light response, and the catalyst can show the excellent visible light photocatalytic activity under the effect of photoelectrocatalysis. The catalyst is simple in preparation method, can be produced in large batch, causes no environment pollution during the preparation process, and can be widely applied to the fields of visible regions of the sunlight, solar cells, antibiosis, photocatalysis treatment of pollutants and the like.

A preparation process for decell corium substrate material is disclosed. It is characterized in its process: selecting healthy animals, conducting physical and chemical treatment to raw hide within 3 hours after killing and peeling, coat shedding, purifying by compound enzyme skin collagen treatment agent, alkaline and other chemical substance. The obtained decell corium substrate material has favorable biocompatibility and appropriate biodegradation velocity. The material can be used for corium substitute, ulcer and skin habilitation, plastic surgery, beautifying and other medical purpose.

The invention provides an epoxy resin self-repairing microcapsule and a preparation method thereof. The method comprises the following steps: mixing a water phase containing inorganic nanoparticles and water with an oil phase containing epoxy resin, monoolefin monomer, a polyene cross-linking agent and an initiator to form a stable oil-in-water emulsion; and heating the emulsion to realize emulsion polymerization in order to form the epoxy resin self-repairing microcapsule. The epoxy resin self-repairing microcapsule is prepared by adopting the inorganic nanoparticles as an emulsifier through an emulsion polymerization process via the method; and compared with methods adopting molecular emulsifiers, the method provided by the invention has the advantages of no need of subsequent emulsifier removal, simple process, and no pollution to environment. The epoxy resin self-repairing microcapsule prepared in the invention has the advantages of excellent stability, excellent leakproofness and high cladding rate.

The invention discloses a nucleic acid screening method of staphylococcus aureus, salmonella, shigella and listeria monocytogenes, belonging to the field of biological assay. In the method, by virtue of a loop-mediated isothermal amplification (LAMP) technology and a specific primer, the specific area of target genes is amplified by an LAMP technical platform; and with the aid of a positive and negative quality control system and an internal control detection system, nucleic acid screening or detection is carried out on the staphylococcus aureus, the salmonella, the shigella and the listeria monocytogenes from the molecular level. The nucleic acid screening method of the invention has the characteristics of being simple, convenient, economical, fast, sensitive and specific, and the method has wide application prospect.

The invention relates to a copper-zinc alloy current collector for inhibiting lithium dendrites. A conventional current collector is covered with a layer of copper-zinc alloy, the thickness of the copper-zinc alloy is 10 nm to 1 [mu]m, and the zinc atom content of the copper-zinc alloy is 1-5%. The copper-zinc alloy current collector provides more active sites for lithium metal deposition than theconventional current collector, and a button battery is assembled in a glove box full of argon by using a metal lithium-loaded alloy current collector or a common copper foil as a negative electrodeand adopting a Celgard 2325 diaphragm and metallic lithium as a reference electrode and a counter electrode. Deposition / dissolution experiments are carried out with blue electricity. The current density is 0.5 mA cm<-2>, the voltage lag is significantly increased after the copper foil electrode only circulates for 520 h, and a copper-zinc alloy negative electrode still maintains a small voltage lag after 1000 h circulation. The current collector in the invention is applied to a lithium-lithium iron phosphate a battery, and the electrochemical performances of the battery are obviously better than those of a battery using a metallic lithium negative electrode adopting the common current collector.

The invention discloses a pulse vortexing defect quantitative detection method and a detection system. The detection method mainly comprises the followings steps of: step 1, obtaining a relation curve algebraic expression of a time domain signal difference peak value among response signals and surface defect depth or width or a relation curve algebraic expression of a frequency domain signal fundamental frequency difference peak value among the response signals and the surface defect depth or width under the condition with known defect depth or width of a tested piece; and step 2, carrying out quantitative evaluation on the defect depth or width of the tested piece, thus obtaining a time domain signal curve or a frequency domain signal curve of a test signal, and further obtaining a time domain signal difference peak value or a frequency domain signal fundamental frequency difference peak value between the test signal and a reference signal, and then substituting the time domain signal difference peak value or the frequency domain signal fundamental frequency difference peak value to the curve algebraic expression obtained in the step 1, thus finally obtaining the defect depth or width. The detection method and the detection system provided by the invention can detect the existence of a defect by solving the relation between signals through differential operation, and also can quantitatively obtain the defect depth or width, are simple, and are easy to operate.

The invention discloses long-circulating solid lipid docetaxel nanoparticles and a preparation method thereof. The long-circulating solid lipid docetaxel nanoparticles comprise the following materialsin therapeutic effective dose: docetaxel, lipid materials, long-circulating auxiliary materials and an emulsifier. The long-circulating solid lipid docetaxel nanoparticles have small particle size, high encapsulation rate and good stability, and not only improve the solubility and the stability of the docetaxel, reduce the toxicity of the docetaxel, but also prolong the circulating time of a medicament in blood, and improve the therapeutic index of the medicament, so that the preparation has the characteristics of low toxicity, low allergy, high efficiency and targeting in clinical application.

The invention relates to a method of solid filling coal mining and building gangue walls along the goaf, which is to build a gangue wall on the side of the filling body in the goaf of the coal mining face, and pack the coal mine gangue into the gangue wall with woven bags or snakeskin bags. If it is full and built into a wall, the coal mine gangue can be directly filled with the gangue filling the coal mining face. Then, the gangue wall needs to be pre-prepared with single-layer metal mesh, "W"-shaped steel belt, ladder beam and double-ended threaded anchor rod. Tight support. As the working face continues to advance, this method can leave a complete gangue wall for the mining of the next working face. The roadway retaining method is simple and practical, has high support strength and low cost.

The invention relates to a method for judging the failure properties of shielding failure and counterattack of a transmission line. In the method, a computer is adopted to collect and process data; and for a certain lightning tripping failure of the transmission line, a lightning protection simulation analysis program is adopted and the collected and processed data is applied by the analysis of the computer to perform simulation reduction and comparison analysis on a circuit-failing tower with the lightning tripping to obtain a judgment result based on the data of the transmission line provided by a running unit, circuit tripping failure data and the lightning activity information of a line corridor obtained by the query of a lightning positioning system. The method comprises the following basic steps of: (1) performing collection and clearing-up on the data of the transmission line and the circuit tripping failure data by adopting the computer; (2) querying the lightning activity information in the corridor of the failing tower by utilizing the lightning positioning system; (3) analyzing the lightning protection performance of the failing tower by the computer by utilizing the lightning protection simulation analysis program; and (4) checking the lightning protection performance and judging the failure property. The method is simple, convenient and easy to operate and convenient to popularize and apply, and ensures low cost.

The invention relates to a preparation method of a maleic anhydride modified polybenzimidazole crosslinking membrane, which takes amino dibasic acid and aromatic tetraamine as monomer raw material and polyphosphoric acid as reaction medium and reaction is carried out for 5-30 hours at 150-220 DEG C under the nitrogen protection condition so as to obtain homopolymer containing amino polybenzimidazole, and takes the amino dibasic acid, nonaminonic dibasic acid and the aromatic tetraamine as the monomer raw materials so as to prepare copolymer of amino polyphosphoric under the same conditions. The prepared homopolymer and the copolymer of the polybenzimidazole have good dissolvability in solvents of dimethyl sulphoxide, N, N- dimethylacetamide, phosphate, vitriol and methane-sulforic acid, etc. and after the prepared homopolymer and the copolymer of the polybenzimidazole are dissolved in an organic solvent, reaction is carried out with the maleic anhydride to obtain maleic anhydride modified polybenzimidazole which goes through thermal crosslinking when casting into membrane, thereby obtaining the polybenzimidazole crosslinking membrane that has good mechanical property.

The present invention belongs to the field of coating technology, and is especially plasma spray process of forming nano TiO2 photocatalytic activator coating on substrate. The process includes utilizing the mixed gas of nitrogen or argon and hydrogen as work gas and nitrogen as powder feeding gas; cleaning the substrate, preheating at 200-600 deg.c, spraying nano TiO2 powder onto the surface of the substrate in a plasma spraying equipment to form nano TiO2 film; and sintering at 500-600 deg.c to cure the nano TiO2 film completely and obtain the nano TiO2 photocatalytic activator coating. The coating is firm, stable and high in photocatalytic activity. The present invention may be used widely in the carrying of photocatalyst and heat spraying of nano powder.

The invention provides a preparation method of sauced medlar sliced dried beef, which comprises the steps of: slicing and dicing beef, cleaning, soaking for removing raw meat and being tasty, marinating, and drying by microwaves. The preparation method is simple in process; and the prepared sliced dried beef is orange in color, is delicious, is kept in meat quality, has natural taste of soy sauce after being chewed, is sweet and crisp during eating, is fresh in mouthfeel, and leads people to endless aftertastes. The marinating procedure and the smudging procedure are eliminated, thus the generation of carcinogens is avoided; and meanwhile, during marinating, Chinese wolfberry fruit with the functions of tonifying Qi and enriching blood, ginseng, astragalus mongholicus, chestnut, bighead atractylodes rhizome, prepared salt and other Chinese medicinal herbs are decocted, so that the prepared sliced dried beef has the health function and is healthier during eating.

The invention discloses an arc discharge paper deacidification device and a method. The device comprises an air storage tank, a glass rotor flowmeter, a sealing liquid storage tank, an insulated ceramic reactor, an arc discharge gun, an insulated ceramic plate, a fixing frame, a first control motor, a second control motor and a computer. Under a normal temperature and normal pressure condition, the paper is processed by gaseous deacidification agent and arc discharge jet, so that the pH value of the paper can be increased to be neutral. The arc discharge paper deacidification device is simple and feasible, fast in processing speed, obvious in effect, and free of pollution to environment in the processing process; and the color and shape of the processed paper do not change, and the ink marks do not diffuse.

The invention provides conductive slurry and transparent conductive coating. The conductive slurry comprises the ingredients of metal conductive filler, a resin substrate, nanometer filler particles and / or colloid particles and a solvent. By adoption of the technical scheme of the invention, the conductive slurry system is uniform and stable, and has the characteristics of electrical conduction, antireflection, diffusion promotion, and mechanical comprehensive performance improvement; a one-step preparation method for the transparent conducive coating is realized through the slurry, and the transparent conducive coating also can be prepared by a three-step method; the prepared conducive coating has high light transmittance, high electrical conductivity, and excellent mechanical comprehensive performance; and in addition, the preparation method has a simple process, a low cost, high repeatability and a low processing temperature, so that the conductive slurry and the transparent conducive coating have high industrial application prospect.

The invention provides a vanadium selenide / carbon-based composite material, a preparation method of the material, and a negative electrode of a lithium ion battery. Vanadium selenide in the vanadium selenide / carbon-based composite material is of a hexagonal crystal system and is deposited on the surface of a carbon-based material, or the surfaces of vanadium selenide particles are at least partially coated with the carbon-based material to form vanadium selenide / carbon particles of a core shell-like structure; the vanadium selenide / carbon particles are connected through carbon nets to obtain the high conductivity. In the negative electrode of the power lithium ion battery, prepared from the vanadium selenide / carbon-based composite material provided by the invention, since selenide with the relatively large specific capacity is combined with the carbon-based material, the negative electrode has the characteristics of large capacity, high rate and high cyclic stability. Therefore, the negative electrode made of the composite material has the relatively large capacity, relatively long service life and relatively low price when applied to the lithium ion battery.

The invention discloses a construction method for repairing an old brick wall. The construction method includes the following steps that the brick wall is cleaned; removing, digging and mending by replacing damaged parts are conducted on bricks of the wall space of the brick wall, wherein the bricks are locally flaked and severely defective; the polished and cleaned wall space is washed; parts which are removed, dug and excavated are filled with bricks; pointing is conducted again on parts of the brick wall space through a preparation method of original pointing materials, wherein the original pointing materials are weathered or damaged or bulged and dropped on the parts; a process for local repairing and painting by utilizing permeation color paste through site configuration is adopted for parts of the washed brick wall space to achieve the effect that the parts are basically consistent with the whole wall space in color, wherein the parts are large in color difference; the processed wall space is wholly painted with a brick wall permeation protective agent; color alternation and antiquating are conducted on the whole wall space. The construction method is convenient and easy to implement and low in construction cost.

The invention provides a method for preparing a manganese dioxide one-dimensional nanometer material in the field of inorganic nanometer material. The method comprises the following steps: solvent a and solvent b are prepared, wherein the solvent a is prepared by dissolving manganese chloride in pure water, adding a dressing agent into the water to be mixed, and the ratio of molar weight of the manganese chloride and the dressing agent is 3:2-1:2; the solvent b is prepared by dissolving potassium permanganate in the pure water; the solvent a and the solvent b in the step one are mixed, wherein the mixing is carried out according to the molar ratio of the manganese chloride and the potassium permanganate of 3:2; the mixed solvent is stirred, and the mixed solution is transferred into a high pressure autoclave containing a polyfluortetraethylene liner to react for 2 to 24 hours at a temperature of between 100 and 200 DEG C, then naturally cooled; a product obtained after cooling in the step two is washed and dried to obtain the manganese dioxide one-dimensional nanometer material. The method has the advantages of simple and convenient operation, high yield, even and controllable product crystal formation and appearance and the like.

The invention relates to a touch device detection method. The touch device comprises a capacitive screen and a capacitive screen control chip, wherein a plurality of drive lines and sense lines which are placed in a crossed way are arranged on the capacitive screen; when a touch device is detected, all drive lines are driven in sequence, and the mutual capacitance value between each drive line and each sense line is measured; and whether the touch device has a defect is detected by judging whether the mutual capacitance value is in a threshold interval. According to the touch device detection method provided by the invention, whether the touch device has abnormity is detected by detecting the capacitance instead of conventional mechanical detection steps; the method is simple and convenient; whether the touch device has the abnormity can be judged rapidly and accurately; and therefore, defective products are prevented from flowing into the next process, and the cost is saved.

The invention discloses a high-capacity carbon-silicon negative electrode active material and preparation and application methods thereof. The high-capacity carbon-silicon negative electrode active material achieves a specific capacity of 800-1500 mAh / g and is formed by mixing carbon-silicon materials and graphite materials, wherein the carbon-silicon materials are microspherical particles prepared by performing ball milling spray-drying and thermal treatment processes on nanosilicon, crystalline flake graphite, carbon nanotubes and a carbon source, the nanosilicon is dispersed on the surfaceof the crystalline flake graphite, the carbon nanotubes are inserted into pores formed between the carbon nanotubes and the crystalline flake graphite, pyrolytic carbon of the carbon source is coatedon the surface of the nanosilicon and the surface and pores of the spherical particles formed by the nanosilicon, the crystalline flake graphite and the carbon nanotubes; the weight of silicon-carbonmaterials is 25%-80% of the total weight of the high-capacity carbon-silicon negative electrode active material. When uniformly mixed with conducting agent and bonding agent, the high-capacity carbon-silicon negative electrode active material can be coated or deposited onto copper foils, foamed nickel, foamed copper or carbon fiber paper as the negative electrode of a lithium ion battery. The preparation method of the high-capacity carbon-silicon negative electrode active material is simple in process, low in cost, applicable to amplified preparation of long-circulation carbon-silicon materials.