Showing papers on "Prepared Material published in 2017"

Heterogenization of amine-functionalized ionic liquids using graphene oxide as a support material: a highly efficient catalyst for the synthesis of 3-substituted indoles via Yonemitsu-type reaction

Abstract: In the present study, heterogenization of amine-functionalized ionic liquids was developed via covalent immobilization of 2-chloroethylamine on imidazole modified graphene oxide (GO) sheets. The prepared material was characterized by various physicochemical techniques such as Fourier transform infrared spectroscopy (FT-IR), powder X-ray diffraction (XRD), thermogravimetric analysis (TGA), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and energy-dispersive X-ray (EDX) spectroscopy. The prepared material was employed as an efficient heterogeneous catalyst for the synthesis of 3-substituted indoles via Yonemitsu-type reaction. The catalyst could be easily separated from the reaction mixture through centrifugation and could be reused for seven consecutive cycles without any appreciable loss in its catalytic activity.

Nanocrystalline Li 2 TiO 3 electrodes for supercapattery application

Abstract: Nanocrystalline Li2TiO3 was successfully synthesized using solid-state reaction method The microstructural and electrochemical properties of the prepared material are systematically characterized The X-ray diffraction pattern of the prepared material exhibits predominant (002) orientation related to the monoclinic structure with C2/c space group HRTEM images and SAED analysis reveal the well-developed nanostructured particles with average size of ∼40 nm The electrochemical properties of the prepared sample are carried out using cyclic voltammetry (CV) and chronopotentiometry (CP) using Pt//Li2TiO3 cell in 1 mol L−1 Li2SO4 aqueous electrolyte The Li2TiO3 electrode exhibits a specific discharge capacity of 122 mAh g−1; it can be used as anode in Li battery within the potential window 00–10 V, while investigated as a supercapacitor electrode, it delivers a specific capacitance of 317 F g−1 at a current density of 1 mA g−1 within the potential range −04 to +04 V The demonstration of both anodic and supercapacitor behavior concludes that the nanocrystalline Li2TiO3 is a suitable electrode material for supercapattery application

Structural, morphological, dielectric and impedance spectroscopy of lead-free Bi(Zn 2/3 Ta 1/3 )O 3 electronic material

Abstract: A lead-free dielectric material [Bi(Zn2/3Ta1/3)O3] has been prepared using a solid state reaction technique at high-temperature. The resistive, conducting and capacitive characteristics of the prepared electronic material have been studied in different experimental conditions. The determination of basic crystal parameters and reflection indices confirm the development of polycrystalline compound with orthorhombic crystal structure. The study of frequency–temperature dependence of ac conductivity illustrates the nature and conduction mechanism of the material. On the basis of observed impedance data and detailed dielectric analysis, the existence of non-Debye type relaxation has been affirmed. The electronic charge carriers of compound have short range order that has been validated from the complex modulus and impedance spectrum. The detailed studies of resistive, capacitive, microstructural characteristics of the prepared material provide some useful data for considering the material as an electronic component for fabrication of devices.

Structural and Spectral Characteristics of Mechanochemically Prepared CsPbBr3

Abstract: Mechanochemical treatment of an equimolar mixture of lead and cesium bromides in the absence of solvent gave inorganic halide perovskite CsPbBr3 with characteristic orthorhombic structure consisting of individual nanoparticles with diameter 10-50 nm and nanoparticle agglomerates with diameter up to 200 nm An effect of dimethylformamide on the structural and spectral properties of the prepared perovskite was discovered X-ray diffraction data indicated that mechanochemical synthesis contributes to nanostructuring of CsPbBr3 as nanosheets Nonstationary photoluminescence data indicated that the prepared material has a small amount of defects

Fiber and silicon dioxide aerogel composite heat insulation material and preparation method thereof

Abstract: The invention discloses a fiber and silicon dioxide aerogel composite heat insulation material and a preparation method thereof. The fiber and silicon dioxide aerogel composite heat insulation material has thermal conductivity of 0.020 to 0.040W/m.K, porosity of 80 to 90 percent, density of 0.10 to 0.18g/cm , a specific surface area of 800 to 1,000m /g, a hydrophobic angle of 120 to 170 degrees and an aperture distribution of 2 to 50nm. According to the prepared heat insulation material, the thermal property of aerogel is maximally reserved, the mechanical performance of the aerogel is improved, the material has certain strength and toughness, the compressive strength of the material is 0.3 to 5MPa, and the bending strength is 0.5 to 1.5Mpa. A preparation process is simple, short in period, low in equipment cost and safe in production, and the prepared material has high heat insulation performance, has the advantages of low thermal conductivity, low density, environment friendliness, safety, nontoxicity, flame retardancy, anticorrosion and the like compared with an ordinary inorganic heat-preservation material, and can be applied to a heat insulation material for pipeline transportation, a firefighting material and the like.

Self-repair re-molded multi-deformation thermosetting shape memory resin material and preparation method thereof

Abstract: The invention discloses a self-repair re-molded multi-deformation thermosetting shape memory resin material and a preparation method thereof. Mainly with bismaleimide, aromatic diamine, epoxy resin, dicarboxylic anhydride and an ester exchange accelerant as raw materials, the re-molded multi-deformation thermosetting shape memory resin material, which has a self-repair function, is prepared by conducting a chain-elongation reaction on the bismaleimide resin by virtue of the aromatic diamine so as to form a linear oligomer, then adding the epoxy resin, the accelerant and the dicarboxylic anhydride, and conducting a certain thermosetting process. The material prepared by the invention can be re-molded into a new shape, and the material, even undergoing reciprocating deformation cycles for more than 5 times, can still guarantee a good shape memory effect; and moreover, the prepared material has a good self-repair capacity, and a fracture toughness repair efficiency can reach 62% or above. Therefore, the prepared material has a broad application potential high-performance structural function integrated materials.

High-hardness scratch-resistant ABS material and preparation method thereof

Abstract: The invention discloses a high-hardness scratch-resistant ABS material and a preparation method thereof and belongs to the technical field of polymer materials. The high-hardness scratch-resistant ABS material comprises, by weight, 40-80 parts of ABS resin, 15-50 parts of polymethyl methacrylate, 5-20 parts of a compatibilizer, 0.3-1 part of a lubricant, 2-10 parts of a toughening agent, 0.3-0.7 parts of an antioxidant and 1-5 parts of a metallic toner. The metallic toner is subjected to organic coating treatment and is a pigment having particle sizes of 11-65 microns. Polymethyl methacrylate is added into ABS resin as a base so that the high-hardness scratch-resistant ABS material has the advantages of high impact, high hardness, scratch resistance and no need of spray coating. The metallic toner is a metal pigment subjected to organic coating treatment, improves dispersion of the aluminum powder or the copper powder in the base ABS, improves the corrosion resistance of the aluminum powder or the copper powder, and greatly improves the chemical resistance of the composite material. The preparation method is simple. The prepared material has no pollution.

Porous silicon oxide lithium ion battery cathode material and preparation method thereof

Abstract: The invention discloses a porous silicon oxide lithium ion battery cathode material and a preparation method thereof. The porous silicon oxide lithium ion battery cathode material is of a porous core-shell structure taking (Si+SiOX)/C as a matrix, wherein the porous core-shell structure consists of an inner layer and a coating layer, the inner layer is formed by mixing a porous silicon with a nanopore structure and a silicon oxide with a nanopore structure, a small-particle-size graphite material and a conductive agent, and the coating layer is organic pyrolytic carbon. Pitch is adopted as a carbon source to firstly coat the surface of an SiOX material with a layer of carbon, and nano Si is disproportionated by high-temperature treatment and is dispersed in SiOX, so the SiOX is prevented from being exposed to electrolyte when a porous structure is finally formed, and the stability and first efficiency of the prepared material are improved; the small-particle-size graphite and the pyrolytic carbon around the (Si+SiOX)/C can further buffer volume change, and increase the electroconductivity of the material together with the added conductive agent, thus further improving the cycle performance of the prepared porous material.

High cycling performance Si/CNTs@C composite material prepared by spray–drying method

Abstract: The anode material Si/CNTs@C composite is prepared by a spray–drying combined pyrolysis technology. The as–prepared material is characterized by XRD, SEM, TEM, and electrochemical measurements. The composite is composed of nano–Si, CNTs, flake graphite, and amorphous glucose–pyrolyzed carbon, and CNTs provides a good wrapping effect to buffer the volume change of silicon. The composite as anode for LIB shows good electrochemical performance. In the voltage range of 2.00–0.01 V, it delivers initial charge capacity of 630.5 at 100 mA g−1, and 85.14 % of initial capacity is retained even after 50 cycles. The CV and AC impedance analysis indicate that the prepared composite separately shows good electrode stability and low charge- transfer impedance R ct. The results indicate that the Si/CNTs@C composite is a potential alternative to graphite for high energy–density lithium–ion batteries.

Synthesis and Dielectric Properties of Nanocrystalline Strontium Bismuth Niobate

Abstract: Herein, we report the synthesis, characterization and dielectric properties of nanocrystalline ferroelectric ceramic of strontium bismuth niobate (SrBi₂Nb₂O₉; SBN). The material was prepared by simple sol–gel combustion route using strontium nitrate, bismuth nitrate pentahydrate and niobium oxide in presence of sucrose. During synthesis, the sucrose played dual role, i.e., as the gelling agent and combustion fuel. The prepared material was characterized in detail using several techniques such as differential thermal analysis and thermogravimetric (DTA-TG), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, transmission electron microscopy (TEM) and scanning electron microscope (SEM). These techniques were utilized to describe the thermal stability, crystal structure, crystallite size and morphologies of the prepared material. Further, the dielectric properties of the prepared SBN sample were investigated at various frequencies and temperatures.

Self-repairing and force-response polyurethane material and preparation method thereof

Abstract: The invention relates to a self-repairing and force-response polyurethane material and a preparation method and applications thereof, belonging to the field of polymer materials. The self-repairing and force-response polyurethane material is prepared from the following raw materials: diisocyanate, polyester polyol or polyether polyol, a diamine/diol chain extender and a metal salt cross-linking agent. A novel ligand is adopted as a chain extender preparation material, so that the cost is low, the preparation technology is simple, and large-scale production is easy; the prepared material has excellent performance, higher tensile strength and elongation at break, and excellent self-repairing performance; and the repairing conditions of the material are very mild, the material has the function of inducting external action force, and the fluorescence performance of the material can be changed under the action of force.

Aluminum-based metal organic frame-graphene oxide composite material, as well as preparation method and application thereof

Abstract: The invention belongs to the field of material science and engineering, and discloses a method for preparing an Al-based metal organic frame-graphne oxide composite material and application thereof. The method comprises the following steps of: (1) adding an organic ligand and soluble aluminum salt into N,N'-dimethyl formamide, stirring and dissolving to obtain a reaction matrix solution; and (2) adding dried graphene oxide powder into the reaction matrix solution obtained in the step (1) to obtain a reaction mixed solution, heating to react to obtain a primary product of the aluminum-based metal organic frame-graphene oxide composite material, washing, heating and activating to obtain the aluminum-based metal organic frame-graphene oxide composite material. The method is simple and easy to operate, is short in time for the preparing process, can be product in large scale; the prepared material has excellent performance, and can be applied as an adsrobent to removal of methyl orange dye molecules in water.

Graphite-phase nitrogen carbide nanosheet/cobaltosic oxide nanosheet composite nanomaterial of scale-shaped structure and preparation method and application thereof

Abstract: The invention aims at providing a method for synthesizing a scale-shaped graphite-phase nitrogen carbide nanosheet/cobaltosic oxide nanosheet composite material and belongs to the technical field of material preparation and catalysis. The composite material is prepared from the raw materials of functionalized graphite-phase nitrogen carbide and cobalt salt through a hydrothermal method at high temperature. The prepared scale-shaped two-dimensional nitrogen carbide nanosheet/cobaltosic oxide nanosheet composite material is in morphology that a scale-shaped cobaltosic oxide nanosheet nanocomposite material evenly grows on the surface of a two-dimensional nitrogen carbide nanosheet. Compared with a traditional pure two-dimensional nitrogen carbide nanomaterial, the specific surface area of the material and the screening capacity of the material to a catalytic substrate are effectively improved, and the material has more efficient photocatalytic performance. The preparation method has the advantages of simple technology, low cost and high catalytic efficiency; the prepared material has efficient carbon dioxide reducing capacity, and thus has good application prospect in the photocatalysis field of environmental modification, greenhouse gas elimination and the like.

Defluorination material and preparation and application thereof

Abstract: The invention discloses a defluorination material, which comprises a metal organic framework material, wherein metal hydroxide is dispersed on the surface of the metal organic framework material and/or in holes; the metal hydroxide is at least one of Mg(OH)2, M(OH)3 and Zr(OH)4; and M is a trivalent metallic element. The invention further discloses the defluorination material which is obtained through activating the metal organic framework material at 180-260 DEG C, putting the metal organic framework material into a solution into which a water-soluble salt of magnesium, a water-soluble salt of M and a water-soluble salt of zirconium are dissolved, regulating the pH of a system to be 8.0-9.5 by using a fixing agent, carrying out stirring reaction, carrying out solid-liquid separation, washing and drying. In addition, the invention further discloses an application of the defluorination material in defluorination of a zinc sulfate solution. The preparation method of the defluorination material is simple, and the prepared material has large specific surface area and uniformly dispersed metal groups, has good compatibility on fluorin ions and has very high selectivity and high defluorination efficiency.

Preparation method for N-doped hollow carbon nanosphere loaded ultra-small gold nanoparticle material

Abstract: The invention relates to a preparation method for an N-doped hollow carbon nanosphere loaded ultra-small gold nanoparticle material and belongs to the field of biomedical materials. The method comprises the following steps: firstly, preparing an SiO2 sphere according to an improved stober method; forming an SiO2@PDA sphere by auto-polymerizing dopamine under a weak basic condition by taking the SiO2 sphere as a template; calcining and charring at high temperature, thereby acquiring an SiO2@N-CNs sphere; preparing SiO2@N-CNs@AuNPs according to the method for reducing HAuCl4 with NaBH4; and finally, performing NaOH etching, thereby acquiring the N-doped hollow carbon nanosphere loaded ultra-small gold nanoparticle material. The synthetic method according to the invention is simple; the reaction conditions are mild; the method is green and environment-friendly; and the prepared material is high in photo-thermal conversion efficiency and photo-thermal stability, good in biocompatibility, low in cost and higher in near infrared absorption capacity.

Porous carbon nanometer tubular material and preparation method and application thereof

Abstract: The invention discloses a dual-layer porous carbon nanometer tubular material and a preparation method and application thereof. The material has a coaxial dual-layer hollow tubular structure, wherein a carbon material taking high graphitized carbon as main is arranged at an inner layer, and a carbon material taking amorphous carbon as main is arranged at an outer layer. The preparation method comprises the steps of preparing a transition metal nanowire by a hydrothermal method, coating an organic carbon source on a surface of the transition metal nanowire to obtain a precursor by a liquid phase deposition method, and carbonizing and pickling the precursor to obtain the material. The method has the advantages of available raw material, simple preparation process and good repeatability, and the prepared material has relatively large inter-layer distance, rich porous structure, large specific area and favorable conductivity, shows high cycle efficiency, high specific capacity and rate performance when applied to a sodium ion battery, and has wide industrial application prospect.

Preparation method for fluorine-doped nickel-cobalt-manganese system ternary positive electrode material and prepared material

Abstract: The invention provides a preparation method for a fluorine-doped nickel-cobalt-manganese system ternary positive electrode material The preparation method comprises the following steps of mixing a transitional metal source water solution, an alkali liquid and ammonium hydroxide, stirring and heating to perform a reaction, and performing aging, filtering, washing and drying on sediments obtained in the reaction to obtain a nickel-cobalt-manganese composite precursor; performing heat treatment on the precursor at a temperature of 500-550 DEG C, then mixing with a lithium source and a fluorine source, then adding a fluxing agent, and mixing and preparing into a blank; and putting the blank into a reaction furnace to be subjected to constant-temperature calcining at a temperature of 700-1,000 DEG C, and then cooling, washing and drying to obtain the fluorine-doped nickel-cobalt-manganese system ternary positive electrode material The fluorine-doped ternary positive electrode material prepared by the preparation method is uniform in average grain diameter and excellent in cycle performance; and in addition, the preparation method is simple in process, low in production cost, energy-saving and efficient, and suitable for industrial production

Preparation method of SiOx/C surface-coated graphite cathode material

Abstract: The invention discloses a preparation method of an SiOx/C surface-coated graphite cathode material. The preparation method comprises the steps of preparing an SiOx/C material precursor by taking SiOx, asphalt and an organic acid solution as raw materials, adding graphite, and preparing a sample by spray granulation and high-temperature pyrolysis by an additive, resin and a curing agent. According to the preparation method, a volume effect of a silicon material can be effectively alleviated in charging and discharging processes, so that the cycling stability is improved; the first cycling efficiency of the silicon material is 82.42% and the reversible specific capacity is 488.2mAh/g at 0.1C multiplying power; and a framework formed by utilizing solidification of the resin can effectively avoid adhesion and agglomeration between grains in a carbonization process of the additive, so that the prepared material has the characteristics of good dispersity and good uniformity and has the advantages of mass production and low cost.

Immobilization of a molybdenum-glycine Schiff base complex within the nanocages of zeolite Y with flexible ligand method

Abstract: Immobilization of a molybdenum-glycine Schiff base complex onto the supercages of zeolite Y was achieved through the flexible ligand method. The prepared material was characterized by different physicochemical techniques. FT-IR spectroscopy confirmed the immobilization of the complex onto the nanocages of zeolite Y. X-ray diffraction analysis revealed that textural properties of zeolite Y support were preserved during the immobilization process. Nitrogen adsorption–desorption analysis demonstrated the decrease in surface area of the prepared material in comparison with parent zeolite Y. Inductively coupled plasma optical emission spectroscopy showed the presence of 0.75 mmol g−1 molybdenum in the final material. The obtained material exhibited high catalytic activity, stability, and recyclability in the epoxidation of olefins with tert-butylhydroperoxide as oxidant.

Carbon-coated lithium-rich multiple lithium ion battery cathode material and preparation method thereof

Abstract: The invention discloses a carbon-coated lithium-rich multiple lithium ion battery cathode material and a preparation method thereof. According to the method, by using carbonate as a pH value modifier, slurry containing Ni, Co, Mn, Li, X (X=K, Na, Mg, Cs) and M (M=Fe, Al, Ti) is prepared; control on a material morphology is implemented by adding a surfactant; Al and Ti are added as structural stabilizers; K and Na are used as lithium ion battery channel expansion agents; a lithium-rich multiple material precursor is prepared in one step by a spray drying method; and calcination is carried out to obtain the material LinXmNiaCobMn1-a-bMcO2. According to the invention, fabrication cost can be effectively reduced; the prepared material is small in granularity and has the advantages of high specific discharge capacity, high cycling stability and the like. Organism derived carbon with electrical conductivity is adopted to carry out coating processing on the multiple lithium-rich material, so that cycling stability of the material can be effectively promoted.

Preparation method for degradable polylactic acid fiber for outdoor tent

Abstract: The invention discloses a preparation method for a degradable polylactic acid fiber for an outdoor tent. The method comprises the following steps: stirring cottonseed meal, absolute ethyl alcohol and a sodium hydroxide solution, adding epoxy castor oil and continuously stirring; adding formaldehyde for regulating the pH value of the system to 3-3.5; adding a mixed solution of 1,6-hexamethylene diisocyanate and isophorone diisocyanate and stirring; adding lauryl dimethyl amine oxide and dimethoxydimethylsilane, stirring, filtering, washing and drying, thereby acquiring a first prepared material; stirring polylactic acid, polyhydroxyalkanoate, the first prepared material, zeolite powder, expanded perlite, bee wax and nonylphenol polyoxyethylene ether, thereby acquiring a second prepared material; heating the second prepared material, adding trioctyl trimellitate, stannous octoate, master batch, disproportionated rosin and antioxidant, uniformly stirring, and then feeding the mixture into a twin-screw extruder for extruding, cooling to room temperature, and then melting and spinning, thereby acquiring the degradable polylactic acid fiber for the outdoor tent.

Prussian blue positive electrode material and sodium ion battery

Abstract: The invention discloses a Prussian blue positive electrode material and a sodium ion battery. The preparation method comprises that the salt solution of M creeps to the mixed solution of Na4Fe(CN)6 and a sodium salt, the obtained solution is heated in a protective atmosphere to obtain a Prussian blue intermediate, the intermediate solution is transferred into a high-pressure reaction kettle, and a heating reaction is performed at a certain temperature to obtain the Prussian blue positive electrode material, or the intermediate solution is subjected to high-temperature spray drying to obtain the Prussian blue material powder. According to the present invention, through the high-temperature and normal pressure reaction and the high-pressure and high-pressure heating reaction, the prepared material has advantages of perfect crystal structure, less defect and low water content, and can improve the specific capacity and the stability of the battery in the application as the sodium ion battery positive electrode material; and the preparation method is simple, and is suitable for continuous large-scale production.

Surface modification lithium ion battery high-nickel laminated cathode material and preparation method thereof

Abstract: The invention discloses an olivine-shaped structure LiNxPO4 surface modification lithium ion battery high-nickel laminated cathode material and a preparation method thereof. The chemical formula of the lithium ion battery high-nickel laminated cathode material is LiNiaCobM1-a-bO2, and the LiNxPO4 is a surface modification layer olivine-type material. The preparation method comprises the following steps: firstly, through a liquid-phase co-precipitation method and a high-temperature solid sintering method, preparing a pure-phase lithium ion battery high-nickel laminated cathode material; then, utilizing a method capable of combining a sol-gel method with a low-temperature sintering method to evenly coat and dope olivine-shaped structure LiNxPO4 to the surface of the high-nickel laminated cathode material surface. The olivine-shaped structure LiNxPO4 is used for carrying out surface modification on the lithium ion battery high-nickel laminated cathode material, the long-term cycling stability and the high-temperature performance of the material can be effectively improved, and the non-reversible deformation of the prepared material in a circulation process is inhibited. In addition, the preparation method has the advantages of being simple in operation, friendly in environment and suitable for industrial production.

Forming method for fiber-reinforced SiC-based composite material

Abstract: The invention belongs to the technical field of the ceramic matrix composite material preparation, and relates to a forming method for a fiber-reinforced SiC-based composite material. The forming method uses a mode of combining the first periodic metal injection mold forming and the densified periodic graphite cracking mold forming, so the fiber-reinforced SiC-based composite material can be formed in the approximate clear dimension during the whole PIP technological process. The forming method comprises the following steps: firstly, using fibers as the raw material for preparing a fiber prefabricated body, placing the fiber prefabricated body in a graphite mold and pre-forming, transferring the fiber prefabricated body to a metal injection mold in the solvent-free liquid state and performing the first periodic forming, finally using a precursor impregnation cracking process, and performing the densified periodic forming to the fiber-reinforced SiC-based composite material in the graphite cracking mold with pores. The method is capable of realizing the approximate clear dimension forming of the fiber-reinforced SiC-based composite material, the dimension accuracy of the prepared material is high, the processing cost is saved, the processing period is shortened, and the engineering progress of the ceramic matrix composite material is promoted.

Electrochemical behavior of novel β-Mn3O4/V2O5 electrode using gel electrolyte for high performance supercapacitors

Abstract: The mixed (manganese and vanadium) oxides (β-Mn3O4/V2O5) are prepared for supercapacitor electrode material by hydrothermal method. The prepared material was characterized by structural, morphological and electrochemical studies. The electrochemical behavior of the prepared electrode material was examined using a gel electrolyte in the potential window of 0 to +1.5 V. The maximum specific capacitance of 786 F g-1 was obtained from cyclic voltammetry at a scan rate of 2 mV s-1. The electrochemical results imply that it is suitable for supercapacitor applications.

High-fogging-surface rapid molding and wear-resisting thermoplastic elastomer material

Abstract: The invention discloses a high-fogging-surface rapid molding and wear-resisting thermoplastic elastomer material. The material is prepared from a styrene elastomer, extending oil, polyolefin elastomer, polypropylene, a fog surface auxiliary, a wear-resisting auxiliary, a nucleation auxiliary, a compatilizer, a lubricant and an antioxidant. On the condition that the hardness of the prepared material is lower than 40 A (Shore), the material still has the quite high abrasion resistance, the product is high in fog surface and short in molding time, and the overall production process is continuous technology.

Tungsten-doped molybdenum disulfide material and synthetic method thereof

Abstract: The invention discloses a tungsten-doped molybdenum disulfide material and a synthetic method thereof. The synthetic method comprises the following steps: dissolving Na2S in a solvent, letting the obtained solution react with a mixed solution of MoCl5 and Na2WO4, carrying out a hydrothermal reaction in a drying oven and carrying out centrifugal drying to obtain black powder, namely W-doped nanoflower-structured MoS2. According to the invention, cost is low, the method is simple and pollution is less. The method is an efficient economic synthetic method. The prepared material has large specific surface area and has the nanoflower structure with high electro-catalytic property.