45 results about "Ethylene imine" patented technology

This invention discloses a method for preparing a self-healing, antibacterial dynamic hydrogel and its coating application. The method includes: 1. Reacting konjac glucomannan with sodium periodate to achieve aldehyde functionalization, and mixing it with sodium alginate powder to prepare a precursor polymer solution A; 2. Mixing an acylhydrazide or hydroxylamine small molecule crosslinking agent with an aminoglycoside drug to prepare an amino crosslinking agent solution B, and preparing a calcium salt ionic crosslinking agent solution C; 3. Mixing the three solutions and allowing them to stand to obtain a hydrogel. The application involves coating a hydrogel mixture solution onto a biodegradable metal surface after preparing a polyethyleneimine auxiliary layer and then gelling it. This invention utilizes aldehyde-functionalized oxidized konjac glucomannan and two crosslinking agents to form acylhydrazone, oxime, and imine bond networks, endowing the hydrogel with self-healing, self-responsive, and long-term antibacterial properties. The hydrogel of this invention improves the biocompatibility, antibacterial properties, and stability of biodegradable metal substrates, making it suitable for biodegradable implantation applications.

This invention relates to the field of thermally insulated aluminum materials, and discloses a thermally insulated aluminum material and its preparation method. The aluminum material consists of a 6061 aluminum substrate and a composite thermally insulated coating layer. The coating layer uses 40-45 parts by weight of bisphenol A type epoxy resin as the matrix, and is formulated with modified silica, coupling agent-modified adamantane, polyethyleneimine-modified hollow glass microspheres, and other modified fillers and additives. The aluminum material is prepared by roughening the substrate through grinding, coating it with the coating, and curing at room temperature for 45-55 minutes. This aluminum material exhibits significantly reduced thermal conductivity, coating adhesion reaching grade 0, excellent aging resistance and water resistance, and a simple preparation process with mild reaction conditions and readily available raw materials. The components work synergistically, making it suitable for industrial mass production and applicable to various thermally insulated aluminum material applications such as construction, automotive, and chemical industries.

The application discloses a preparation method of nanocellulose / polyethyleneimine / MIL-101(Cr) composite porous material for efficiently capturing dyes and heavy metal ions in wastewater. First, Cr(NO3)3.9H2O is selected as a metal ion source, H2BDC is selected as an organic ligand, and water is selected as a solvent, and MIL-101(Cr) powder without fluorine is prepared through a hydrothermal synthesis method; then, CNF is selected as a green polymer matrix, PEI is selected as a functional reagent, and MIL-101(Cr) nano-filler is simply complexed with a crosslinking agent to prepare a series of new nanocellulose / polyethyleneimine / MIL-101(Cr) aerogels which are uniform and low in density, can efficiently absorb organic dyes and heavy metal ions in wastewater, and have a synergistic effect on simultaneously absorbing dyes and heavy metal ions in a binary system. The raw materials in the application are derived from biomass, have the advantages of biodegradability and good biocompatibility, and have the characteristics of easy availability, simple preparation method, short operation process, recyclability, environmental protection and economy. The application has a good application prospect in wastewater treatment and other industries.

This invention discloses a method for preparing and applying an antibacterial composite coating based on quaternized zinc oxide nanoparticles. The preparation method includes: grafting quaternary ammonium salt compounds onto the surface of zinc oxide nanoparticles to prepare synergistic antibacterial nanoparticles; modifying the substrate surface by co-deposition of dopamine and polyethyleneimine to introduce active functional groups; and spraying or dipping the quaternized zinc oxide nanoparticles onto the modified substrate surface to obtain the antibacterial composite coating. This novel antibacterial material preparation scheme can integrate the advantages of zinc oxide nanoparticles and quaternary ammonium salts, while solving key technical problems such as nanoparticle aggregation, weak interfacial bonding, and limited antibacterial efficiency. It is of great significance for promoting the upgrading of hygiene and safety in the fields of medicine, food, and building materials.

The application relates to the technical field of solar cells, in particular to a perovskite solar cell, a preparation method thereof and a photovoltaic module. The perovskite solar cell provided by the embodiment of the application comprises a buffer layer, the buffer layer is arranged between an electrode structure and a carrier functional layer, and the buffer layer comprises a polyethylene imine derivative. The long-chain structure of the polyethylene imine derivative can physically block high-energy particles in a sputtering process, significantly reduce the physical damage to an organic charge transport layer and a perovskite active layer of an underlying layer, eliminate the negative influence of transparent electrode preparation, improve the transmission and extraction of electrons in the perovskite solar cell, improve the photoelectric conversion efficiency and stability of the perovskite solar cell, and reduce the photoelectric conversion efficiency decay rate.

This invention belongs to the field of wastewater biological treatment technology and discloses a method for enhancing the treatment effect of a bioreactor using sludge gasification residue. The method includes the following steps: a) drying, grinding, and sieving the sludge gasification residue to obtain sludge gasification residue with a particle size <80 μm; b) modifying the sludge gasification residue with a particle size <80 μm using polyethyleneimine; c) adding the modified sludge gasification residue to the bioreactor. Under anoxic and aerobic conditions, a biofilm forms on the sludge gasification residue, inhibiting filamentous bacterial expansion, promoting sludge floc granulation, and degrading and removing pollutants from the wastewater. This invention utilizes the modified sludge gasification residue, which forms a biofilm on the residue, inhibiting filamentous bacterial expansion, and promoting sludge floc granulation within 20-30 days, shortening the sludge granulation cycle and improving nitrogen and phosphorus removal efficiency.

The application provides an ultrasonic response piezoelectric ionic hydrogel and application thereof, and the hydrogel is formed by cross-linking and solidification of a precursor solution under ultraviolet irradiation; components of the precursor solution include a photosensitive polymer, an ionic polymer, a photoinitiator and a solvent; the photosensitive polymer includes any one or a combination of at least two of polyether F127 diacrylate, polyhydroxyethyl methacrylate, polyethylene glycol dimethyl acrylate, methacrylated gelatin or methacrylated collagen; and the ionic polymer includes any one or a combination of at least two of epsilon-polylysine, polyethyleneimine hydrochloride, polyallylamine hydrochloride, polyquaternary ammonium salt-10 or cationic guar gum. The application uses ultrasonic waves as an external remote driving signal to non-invasively and painlessly activate the piezoelectric ionic effect of the hydrogel, generate detectable periodic voltage and current signals in the hydrogel, and has excellent treatment effect on acne and infected wound repair.

This invention discloses a method for preparing a positively charged nanofiltration membrane using 3D electrostatic spray printing. The method includes the following steps: S1, uniformly mixing a polymeric membrane matrix material, a pore-forming agent, a membrane modifier, and an organic solvent, and preparing a support membrane for the nanofiltration membrane via a phase inversion method; S2, using piperazine and trimesoyl chloride as the aqueous and organic phase monomers, respectively, spraying the monomer solution onto the polymeric support membrane using 3D electrostatic spray printing to prepare a piperazine-trisoyl chloride intermediate layer; S3, using polyethyleneimine and trimesoyl chloride as the aqueous and organic phase monomers, respectively, spraying the monomer solution onto the intermediate layer using 3D electrostatic spray printing to prepare a polyethyleneimine-trisoyl chloride positively charged outer layer. After heat treatment, the positively charged nanofiltration membrane is obtained. This invention provides a simple, precise, and controllable method for preparing a positively charged nanofiltration membrane, which exhibits good selective separation ability for magnesium ions and lithium ions.

This invention discloses a method for improving the interfacial bonding strength of an ultra-smooth semiconductor shielding layer. The method involves grafting and modifying the surface of conductive carbon black with an acid ester, then dividing it into two portions. The two portions of modified conductive carbon black are separately mixed with EVA resin and polyimide, and then separately vulcanized in a flat vulcanizing machine. The vulcanized materials are then added to a Banbury mixer along with vinylpyrrolidone, NN'-ethylene bis-stearamide, polyethyleneimine, and sodium polyacrylate for compounding. The compounded material is immediately impregnated with peroxide and then rapidly fed into an extruder. After extrusion, it is vulcanized again to obtain an ultra-smooth semiconductor shielding layer with improved interfacial bonding strength. This invention modifies the surface of conductive carbon black, strengthening the interaction between the macromolecular chains and the carbon black. Batch mixing with different esters enhances its internal anisotropy, forming attractive clusters, reducing the dispersion of conductive carbon black within the shielding layer, decreasing the number of branches, reducing repulsion, and ultimately strengthening the interfacial bonding strength, resulting in a better overall shielding layer.

The application provides a self-healing gel plugging agent for fractured formation and a preparation method and application thereof, and belongs to the technical field of plugging agent preparation. The preparation method of the self-healing gel plugging agent comprises the following steps: under stirring, polyvinyl alcohol is dissolved in deionized water to form a uniform solution, then acrylamide, 3-acrylamidophenylboronic acid, polyethyleneimine and diethylaminoethyl methacrylate are sequentially added to obtain a mixed solution; an initiator is added to the obtained mixed solution, mixed uniformly, and reacted to obtain a self-healing gel; and the obtained self-healing gel is dried and crushed to obtain the self-healing gel plugging agent for fractured formation. The self-healing gel plugging agent has excellent deformation adaptability, damage healing ability, shear thinning resistance, crack retention performance and mechanical properties, and breaks through the limitation that traditional gels are unstable and prone to failure in dynamic cracks.

A polyethyleneimine production method provided herein includes a polymerization step for polymerizing ethyleneimine at a temperature of 30°C or higher in the presence of a superacid, wherein the polymerization step is performed using an alcohol / water mixed solvent. According to this production method, polyethyleneimine having a high secondary amine content can be produced even under mild conditions.

Microfibers and nanofibers containing quaternary ammonium polymers and / or interpenetrating polymer networks are provided. For example, a microfiber or nanofiber including a blend, composite, or interpenetrating polymer network is provided. The blend, composite or interpenetrating polymer network can include (i) a polyethyleneimine intermediate, in which the polyethyleneimine intermediate includes a reaction product of reagents including a polyethyleneimine and one or more alkylating agents; at least one of the one or more alkylating agents introduces hydroxyl group functionality or thiol group functionality on the polyethyleneimine intermediate; and nitrogen atoms present in the polyethyleneimine intermediate that are partially or completely quaternized by the one or more alkylating agents; and (ii) a hydroxy-functionalized oligomer, polymer, or copolymer including pendant and / or terminal hydroxy group(s).

Covalently linked linear polyethylenimine (PEI) clusters are provided that change conformation depending upon changes in counterion concentrations. The structures may be used for the storage, delivery, and / or transport of substances.

The application discloses a dopamine in-situ growth ZIF-8 dye / salt separation loose nanofiltration membrane and a preparation method thereof, and comprises the following steps: preparing a Tris buffer solution by taking a Tris buffer solution as a solvent and an alcohol-water mixed solution; preparing a precursor solution by adding dopamine, polyethyleneimine and a metal ion compound into the buffer solution; depositing the precursor solution on a polysulfone membrane surface; dissolving 2-methylimidazole in the alcohol-water mixed solution and then depositing the 2-methylimidazole on the polysulfone membrane surface; pouring off the excess solution, drying the membrane and then storing the membrane in deionized water to obtain a filter membrane. The nanofiltration membrane prepared by the application can intercept dyes and almost completely pass bivalent inorganic salts, and can fully separate a mixed solution of Congo red, methyl blue and sodium sulfate. Meanwhile, the application is simple in operation, can be popularized to various material substrates, and has great application value and development prospect.

The application discloses an anti-impact and anti-scratching automobile hub cover and a preparation method thereof, and relates to the technical field of high polymer materials.The automobile hub cover comprises at least: 100 parts of nylon 6 resin; 5-15 parts of bismaleimide resin prepolymer; 10-15 parts of hydrogenated styrene-butadiene block copolymer grafted maleic anhydride; 10-20 parts of modified basalt fiber; 5-15 parts of modified polyarylate fiber; 0.2-0.5 parts of antioxidant; 0.3-0.8 parts of light stabilizer; 2-4 parts of color master batch; 0.3-0.8 parts of lubricant; the bismaleimide resin prepolymer is prepared by mixing 4,4'-diphenylmethane bismaleimide and 2,2'-diallyl bisphenol A; the modified basalt fiber is co-precipitated and modified by polydopamine, polyethyleneimine and octaamino cage-shaped polyhedral oligomeric silsesquioxane functionalized graphene oxide; and the modified polyarylate fiber is co-precipitated and modified by polydopamine and polyethyleneimine.The automobile hub cover prepared by the application has low moisture absorption, high impact resistance and excellent scratch resistance.

The application relates to a method for preparing an ultrafiltration membrane based on surface segregation, an anti-pollution ultrafiltration membrane and application thereof, and the method comprises the following steps: coating a casting solution to a substrate surface, scraping an initial state membrane on the surface of the substrate to obtain a substrate with the initial state membrane; the casting solution comprises polyvinylidene fluoride, a hydrophilic polymer and perfluorosulfonic acid; and placing the substrate with the initial state membrane in a coagulation solution to solidify into a membrane; the coagulation solution contains polyethyleneimine and water. The casting solution is converted into a solid membrane through non-solvent induced phase transition, perfluorosulfonic acid and polyethyleneimine are enriched on the surface, the surface segregation of perfluorosulfonic acid is enhanced, and the prepared ultrafiltration membrane has persistent and stable anti-pollution performance and high flux recovery rate after cleaning.

This invention belongs to the field of polyurethane materials technology, specifically relating to a waterborne polyurethane coating, its preparation method, and its application. This invention uses amino-terminated crosslinking agent polyethyleneimine containing a large number of hydrogen bonds and small molecule amine crosslinking agents as post-crosslinking agents to construct a dense-sparse synergistic double crosslinking network. This network is then emulsified with oligomeric polyols, polyisocyanates, hydrophilic chain extenders, and small molecule chain extenders, while controlling the hard segment content at 41 wt%, to prepare a waterborne polyurethane coating with high transparency, water resistance, alcohol resistance, and shape memory properties. The resulting waterborne polyurethane emulsion not only exhibits excellent transparency (over 89% transmittance in the visible light range), but also combines a loose chemical crosslinking network constructed by short-chain crosslinking agents with a dense physical crosslinking network constructed by multi-branched crosslinking agents. The synthesized waterborne polyurethane emulsion demonstrates excellent water resistance, strong mechanical properties, superior alcohol scratch resistance, and shape memory properties.

The present application relates to terephthalic acid hydrorefining catalyst preparation technical field, specifically to a kind of preparation and application of supported palladium catalyst of plasma cooperation.This application overcomes the problems that active component of supported palladium catalyst is easy to agglomerate, poor in anti-poisoning ability and metal is easy to peel off and deactivate under high temperature environment.By liquid plasma, surface energy excitation is carried out on non-carbon carrier, and nano-defects with quantum trap effect are constructed;Then, using polyethyleneimine or phytic acid and other bifunctional organic ligand chelate palladium precursor solution, combined with ultrafast joule heat pulse flash process, ligand is induced to carbonize in situ on metal surface;Finally, assisted by plasma directional crystal face induced reduction;The dispersion of active center is effectively improved, the space confinement and shape selection shielding of active site are realized, the metal loss rate and the residual amount of carboxybenzaldehyde are reduced, and the anti-poisoning performance and service life of the catalyst under industrial conditions are enhanced.

The application discloses a PVA flame-retardant composite film with a cross-linking structure and a preparation method thereof, and belongs to the technical field of composite films. The preparation method comprises the following steps: S1, preparing a polyethyleneimine aqueous solution and a tetra(hydroxymethyl)phosphonium chloride aqueous solution respectively; S2, heating and dissolving PVA particles with distilled water as a solvent to obtain a PVA aqueous solution glue; uniformly mixing the polyethyleneimine aqueous solution and / or the tetra(hydroxymethyl)phosphonium chloride aqueous solution with the PVA aqueous solution glue, heating and standing to obtain a mixed glue; and adding the mixed glue into a mold, performing constant-temperature and constant-humidity drying treatment to obtain the PVA flame-retardant composite film with the cross-linking structure. The composite film has the characteristics of good flame retardancy and high strength.

The application discloses a method for preparing a mixed matrix reverse osmosis membrane by using mesoporous silicon nanotubes, and the method is implemented according to the following steps: 1) obtaining a silicon solid rod by using Pluronic F127 block copolymer and cetyltrimethylammonium bromide under the participation of tetraethyl orthosilicate, then removing the surfactant by using hydrochloric acid to further obtain a mesoporous material, and finally etching the mesoporous material by using polyethyleneimine to obtain the mesoporous silicon nanotubes; 2) then, the synthesized mesoporous silicon nanotubes are added into an aqueous phase solution containing m-phenylenediamine and uniformly dispersed, so that the content of the mesoporous silicon nanotubes in the aqueous phase solution is 0.005% w / v to 0.04% w / v, and an aqueous phase solution is obtained; 3) the aqueous phase solution obtained through the step 2) and a uniform benzenetriyl chloride oil phase solution are used to form a polyamide layer on a support layer by using an interfacial polymerization method, and a mixed matrix reverse osmosis membrane is obtained. The method can significantly improve the flux of the reverse osmosis membrane while maintaining a high rejection rate.

This invention provides a composite functionalized thallium removal material, its preparation method, and its applications. The composite functionalized thallium removal material is composed of α-MnO2 nanomaterials, polyethyleneimine, and sodium alginate (SA). The preparation method includes: firstly, synthesizing α-MnO2 nanomaterials with a needle-like structure via a hydrothermal method; secondly, dissolving sodium alginate and polyethyleneimine in water to form a mixed matrix solution; subsequently, uniformly dispersing the α-MnO2 nanomaterials in the above mixed solution to obtain a composite dispersion; finally, adding the composite dispersion dropwise to a calcium chloride solution, using calcium ions for cross-linking and solidification to form microspheres, followed by washing and freeze-drying to obtain the finished product. The composite functionalized thallium removal material of this invention possesses advantages such as high adsorption capacity (≥293 mg / g), fast adsorption rate (reaching equilibrium in 30 min), wide pH adaptability (especially suitable for acidic wastewater), easy separation and recovery, environmentally friendly process, and low cost.

The application discloses a kind of high frequency copper-clad plate based on PTFE and preparation method thereof, belong to high polymer composite technical field.Its preparation method includes: using sol-gel method to combine polyethylene imine auxiliary preparation high-entropy oxide nanoparticles;Nanofiller with core-shell is prepared by fluorination modification after being coated by polydopamine;Hollow alumina-silica ceramic microspheres are modified by multiple fluorine-containing silane and fluorine shell layer doping;Polytetrafluoroethylene-based nanocomposite dispersion liquid is prepared by compounding fluorinated boron nitride nanosheet and hexagonal boron nitride flake;After gradient fluorinated silane treatment, glass fiber cloth is impregnated with dispersion liquid to prepare prepreg;After multilayer copper foil is stacked, it is formed by staged vacuum hot pressing.The obtained copper-clad plate dielectric layer is composed of fluorinated modified PTFE resin, multi-scale low-dielectric filler and surface fluorinated glass fiber, and has extremely low dielectric constant, extremely low dielectric loss, high peel strength, low water absorption and high thermal conductivity.

This invention provides a seawater desalination hydrogel evaporator and its preparation method. The evaporator includes an upper photothermal layer and a lower evaporation layer. The upper photothermal layer is composed of a polyvinyl alcohol, polyethyleneimine, and dopamine system, while the lower evaporation layer is formed by cross-linking polyvinyl alcohol with glutaraldehyde. The upper photothermal layer and the lower evaporation layer are integrated through interfacial chemical cross-linking and freeze-thaw induced physical interpenetration, forming a gradient pore structure at the interface between the two layers, transitioning from micron-scale water transport channels to nanoscale photothermal channels. The preparation method includes preparing solutions of polyvinyl alcohol, polyethyleneimine, dopamine, and glutaraldehyde to form the upper photothermal layer and the lower evaporation layer, followed by static settling and freeze-thaw treatment to achieve bilayer integration. This invention combines good photothermal conversion capability, continuous water transport capability, and interfacial bonding stability, which is beneficial for improving the evaporation performance of seawater desalination.

This invention belongs to the textile field, and specifically relates to a method for preparing colored antibacterial textiles. The method uses waste colored cotton fabric as raw material, and obtains colored micro / nanocellulose by acid hydrolysis to break down the cellulose macromolecular chains. After cationic modification, it yields cationic modified colored cellulose with excellent water dispersibility. Polyethyleneimine or polylysine is added to alter the stability of the cationic modified colored cellulose aqueous dispersion, causing it to flocculate and form a gel. A crosslinking agent is used to form chemical crosslinks between cellulose, polyethyleneimine or polylysine, and the textile substrate, resulting in high-performance colored antibacterial textiles. This invention utilizes waste colored cotton fabric as raw material, realizing the resource utilization of waste textiles. The use of epoxy or cyclonitrogen crosslinking agents to form crosslinks between the cationic modified colored cellulose gel, polyethyleneimine or polylysine, and the textile substrate achieves coloring and antibacterial finishing of the textiles.

This invention relates to the field of reinforcement materials technology, specifically to a mine reinforcement grouting material and its preparation method. The raw materials for preparing the mine reinforcement grouting material include the following components in parts by weight: 10-15 parts of polyethyleneimine-grafted silane coupling agent KH560 modified nano-silica, 30-50 parts of triglycidyl isocyanurate-9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide-polypropylene glycol composite prepolymer, 40-60 parts of water glass, 0.2-0.3 parts of dimethylaminoethoxyethanol, and 10-16 parts of dibutyl phthalate. The polyethyleneimine-grafted silane coupling agent KH560 modified nano-silica is abbreviated as PEI-KH-SiO2, and the triglycidyl isocyanurate-9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide-polypropylene glycol composite prepolymer is abbreviated as TGIC-DOPO-PPG. The present invention also provides a method for preparing the aforementioned reinforced grouting material, wherein the prepared grouting material has good mechanical properties and flame retardant properties.

The application discloses a sodium alginate / polyethyleneimine composite aerogel dehumidification material and a preparation method and application thereof. The preparation method of the composite aerogel dehumidification material comprises the following steps: taking sodium alginate and polyethyleneimine as a matrix, constructing a three-dimensional porous hydrogel network under the crosslinking action of epichlorohydrin, and obtaining the sodium alginate / polyethyleneimine aerogel through freeze drying; then, the aerogel is immersed in a composite alcohol solution containing lithium chloride and ethanolamine, and the sodium alginate / polyethyleneimine composite aerogel dehumidification material is obtained through freeze drying. The sodium alginate and the polyethyleneimine are taken as the matrix, a three-dimensional porous aerogel skeleton is constructed through chemical crosslinking, and hygroscopic inorganic salts are further loaded, so that the composite aerogel dehumidification material with high hygroscopic capacity and recyclability is obtained.

The application provides a protein-bound toxin adsorbent and a preparation method and application thereof, the protein-bound toxin adsorbent takes super-high crosslinking styrene-divinylbenzene resin as a carrier, the carrier is loaded with polyethyleneimine, the polyethyleneimine is connected with an adsorption ligand, and the adsorption ligand comprises at least one of alpha-methyl-4-(2-methylpropyl) phenylacetic acid, oleic acid and linoleic acid. The protein-bound toxin adsorbent of the application makes the protein-bound toxin in a free state through the action of the adsorption ligand, and simultaneously removes the protein-bound toxin in the free state through the adsorption action of the super-high crosslinking styrene-divinylbenzene resin and the electrostatic combination of the polyethyleneimine, so that the removal rate of the protein-bound toxin is improved.

This invention provides a method for cationic modification of cotton-linen blended fibers, a method for dyeing cationically modified cotton-linen blended fibers, and the field of textile chemical modification and dyeing technology. This invention uses quaternary ammonium salt compounds containing active groups (epoxy groups, halool groups, or ethyleneimine groups) as cationic modifiers and employs an impregnation-pressing process to chemically modify cotton-linen blended fibers. Quaternary ammonium salt cationic groups are covalently grafted onto the molecular chain, causing the surface potential of the modified blended fibers to change from negative to positive. This reduces the charge repulsion between the fibers and anionic dyes, transforming it into attraction, significantly improving the dyeing depth (K / S value). This provides a universal and efficient solution for environmentally friendly dyeing of cotton-linen blended fabrics.

The application belongs to the technical field of lithium-sulfur batteries, and relates to a nitrogen-doped graphite-like intercalated MoS2 heterostructure and a preparation method and application thereof. The preparation method is as follows: after molybdenum salt and thiourea are completely dissolved in deionized water or ultrapure water, polyethylene imine is added, and the mixture is stirred to obtain a mixed solution; the mixed solution is subjected to a hydrothermal reaction to obtain a precipitate; the precipitate is washed, centrifuged and dried for multiple times to obtain a MoS2 / PEI composite material; the MoS2 / PEI composite material is subjected to annealing treatment at 550 DEG C to 850 DEG C for 2 h to 10 h under the protection of argon to obtain a MoS2 / g-CM heterostructure. The application successfully constructs and systematically verifies that the nitrogen-doped graphite-like single-layer carbon inserted into the interlayer of MoS2 forms a heterostructure as a multifunctional catalyst and interface regulation material for high-performance lithium-sulfur batteries. On the premise of ensuring excellent catalytic properties, the conductivity is improved, and the defects of active site scarcity and easy collapse of the layered structure are overcome.