42 results about "Oxyvanadium" patented technology

The Li-ion paradigm of battery technology is fundamentally constrained by the monovalency of the Li-ion. A straightforward solution is to transition to multivalent ion chemistries, with Mg2+ the most obvious candidate due to considerations of size and mass. Despite early interest, the realization of Mg batteries has faced myriad obstacles, including a sparse selection of cathode materials demonstrating the ability to reversibly insert divalent ions. Disclosed herein is evidence of reversible topochemical and electrochemical insertion of Mg2+ into a metastable one-dimensional polymorph of V2O5. Not only does ζ-V2O5 represent a rare addition to the pantheon of functional Mg battery cathode materials, but is also distinctive in exhibiting a combination of high stability, high specific capacity due to ion insertion, and moderately high operating voltage.

The invention discloses application of bismuth vanadium tetraoxide as a photocatalyst in preparation of allantoin. According to the method, a decahedral single crystal micron material bismuth vanadium tetroxide is used as a photocatalyst, uric acid is used as a substrate, a photocatalytic reaction is performed under the irradiation of visible light, and uric acid is oxidized, hydrolyzed, decarboxylated and converted into allantoin; compared with a traditional chemical synthesis method, the method has the advantages that the bismuth vanadium tetraoxide serves as a photocatalyst, uric acid is converted into allantoin through photocatalytic reaction, selective activation of chemical bonds is achieved through directional regulation and control of photo-induced electron-hole pairs, and the method is mild in reaction condition, low in energy consumption and the like.

The invention discloses a hydrophobic thermochromic nano core-shell structure coating and a preparation method and application thereof.The preparation method of the hydrophobic thermochromic nano core-shell structure coating comprises the steps that trimethoxysilane and deionized water are mixed and stirred, and a stock solution is prepared; adding the tungsten-doped vanadium dioxide nanoparticles into an alcohol-water mixed solution of deionized water and absolute ethyl alcohol, and stirring to prepare a vanadium dioxide solution; adding the stock solution and the vanadium dioxide supernatant into deionized water, adding an ammonia water solution, carrying out ultrasonic treatment, and adding acetone to terminate the reaction; centrifuging to obtain a core-shell nanoparticle solution sample; adding waterborne polyurethane into the sample, stirring, spin-coating and drying to obtain a color-changing coating; according to the coating, material oxidation is avoided by adopting a VO2 coated SiO2 core-shell structure, so that the intelligent window has thermochromic performance and hydrophobic performance at the same time, the heat transfer coefficient is increased, and a new thought is provided for promoting development of a spacecraft heat management technology.

Golf ball comprising a layer formed from a vanadium dioxide nano-particle composition; wherein the vanadium dioxide nano-particle composition comprises a polymer composition and one of a plurality of vanadium dioxide composite nano-particles, a vanadium dioxide composite nano-particle slurry, or a mixture of a polymer emulsion and the vanadium dioxide composite nano-particle slurry. Non-limiting examples of suitable polymer compositions include latexes, lacquers, enamels, acrylics, an epoxies, polyesters, urethane acrylates, polyester acrylates, alkyds, thermoset polyurethane compositions, thermoplastic polyurethane compositions, and / or ionomer compositions. The vanadium dioxide composite nano-particle slurry may be formed from a plurality of vanadium dioxide composite nano-particles that are dispersed throughout a dispersion medium. The polymer emulsion may comprise an aqueous dispersion or an emulsion of polymer resin.

A thermochromic material comprising vanadium dioxide (VO2) nanoparticles dispersed on surfaces of larger scaffolding particles such as amorphous silicon dioxide (SiO2). The SiO2 particles prevent the vanadium dioxide nanoparticles, which are typically less than approximately 40 nm in size, from sintering into larger particles, thus giving the material advantageous properties. A base added to the vanadium precursor solution functionalizes the scaffolding particles. The size of the vanadium dioxide nanoparticles can be changed by changing the size of the scaffolding particles. The material can be dispersed in a coating, film, ink, plastic, or polymer.

The invention relates to the technical field of nano-particle preparation, in particular to a preparation method of vanadium dioxide nano-powder. The method comprises the following steps: firstly, taking the failed vanadium battery electrolyte as a vanadium-containing raw material, adding a phosphorus-containing substance into the failed electrolyte, and converting vanadium in the electrolyte into relatively fine vanadyl phosphate particles by adopting the phosphorus-containing substance to form vanadyl phosphate slurry; then converting pentavalent vanadium in the vanadyl phosphate slurry into tetravalent vanadium by adopting a reducing agent or an electrolysis mode under the ultrasonic action, after reduction or electrolysis is completed, putting the slurry into an ultrasonic atomizer, putting the homogeneous precipitant solution into another ultrasonic atomizer, and carrying out ultrasonic treatment on the homogeneous precipitant solution; and liquid drops generated by ultrasonic atomization in the two ultrasonic atomizers are introduced into a vacuum tube furnace for heat treatment, and vanadium dioxide nano-powder is prepared after heat treatment. The preparation method is low in cost and simple to operate, and the prepared vanadium dioxide nano powder is small in particle size, uniform in distribution and free of obvious agglomeration phenomenon.

The invention discloses a heat-insulating car window film and a preparation method thereof, and relates to the technical field of films. The heat-insulating car window film prepared by the invention comprises modified polyurethane and modified vanadium dioxide, the modified polyurethane is obtained by polymerizing polycarbonate diol, hexamethylene diisocyanate and a dihydric alcohol monomer and then carrying out end capping by using 2, 3, 3-trimethyl-3H-indole-7-alcohol; the modified vanadium dioxide is obtained by polymerizing pre-treated vanadium dioxide coated with methyl methacrylate, 1-(pent-4-ene-1-yl)-1H-pyrrole, squaric acid and an intermediate, and the pre-treated vanadium dioxide is coated with 1-(pent-4-ene-1-yl)-1H-pyrrole. The heat-insulating car window film prepared by the invention has good heat-insulating, flame-retardant and anti-aging properties.

To provide a solid heat storage material containing vanadium dioxide and aluminum and enabling suppression of reduction in latent heat.SOLUTION: A solid heat storage material is a composite of vanadium dioxide and an aluminum alloy, the aluminum alloy containing at least one of silicon or copper and having a composition that does not reduce vanadium dioxide compared with pure aluminum.SELECTED DRAWING: None

The invention discloses a preparation method of ammonium polyvanadate and the ammonium polyvanadate. The method comprises the following steps: carrying out calcium salt roasting and acid leaching on the vanadium slag to obtain a calcified acid leaching vanadium solution; removing lead from the calcified vanadium acid leaching solution to obtain a purified solution; adjusting the pH value of the purified liquid and adding ammonium sulfate; heating, introducing compressed air and ozone, and stirring; and after the compressed air and the ozone are introduced into a preset volume, stopping heating, stirring and standing to obtain ammonium polyvanadate. According to the scheme provided by the invention, ozonation is adopted, so that the vanadium precipitation yield after lead removal can be improved, meanwhile, the subsequent vanadium product quality is not influenced, other impurities are not introduced after oxidation is completed, the vanadium oxide wastewater circulation is not influenced, and the cost of the oxidation process is low.

The invention discloses a method for preparing vanadium metal powder based on a cryolite system, which comprises the following steps: mixing vanadium monoxide (VO) serving as a vanadium source, magnesium metal particles and cryolite in a mass ratio of (10-20): (6-12): (30-60), and roasting and reducing for 2-6 hours at 800-1000 DEG C under the protection of inert gas. After the reaction is completed, leaching a core material in a product by using a 10-15% zirconium chloride and other chloride solution, and drying to obtain metal vanadium powder; and the leached filtrate can be regenerated into cryolite for recycling after being treated. VO is selected as a vanadium source, and consumption of a reducing agent is reduced from the source; the metal magnesium is selected as a reducing agent, the activation energy is reduced by utilizing the higher reaction activity of the magnesium, and the key is that the magnesium and the vanadium are subjected to non-alloying reaction, so that the product purity is fundamentally guaranteed; the cryolite is used for replacing chloride molten salt, so that the obstruction of oxide layer by-products can be effectively broken, the reaction activity can be improved, and the cryolite can be recycled. The method has the advantages of simple process and high product purity, and is especially suitable for the requirements of high-end fields on vanadium materials.

The invention provides an aqueous cadmium ion-vanadium dioxide battery as well as a preparation method and application thereof, and relates to the field of ocean energy storage. The battery comprises a negative electrode, a positive electrode, a diaphragm and an aqueous electrolyte, the negative electrode is metal cadmium or cadmium-based alloy; the active material of the positive electrode is metastable monoclinic phase vanadium dioxide; the diaphragm is a glass fiber diaphragm; the aqueous electrolyte is an aqueous solution containing cadmium salt; the total concentration of the cadmium salt in the aqueous electrolyte is 1-4 mol / L. The aqueous vanadium dioxide-cadmium metal secondary battery disclosed by the invention has the advantages of safe aqueous electrolyte system, high rate capability, ultra-long cycle life and the like, and has remarkable advantages when being applied to ocean energy storage.

The invention relates to the technical field of metallurgy and alloy materials, and discloses a low-carbon high-nitrogen vanadium-nitrogen alloy preparation method based on nitrogen increasing treatment, which comprises the following steps: uniformly mixing vanadium oxide, graphite powder and a catalytic nitrogen increasing agent according to a mass ratio of 1: (0.22-0.30): (0.01-0.05) to obtain a mixture, the catalytic nitrogen increasing agent is prepared by mechanically activating and nitriding ferrovanadium fine powder or ferrochromium fine powder and aluminum nitride powder in a nitrogen atmosphere; carrying out wet mixing activation and ball pressing on the mixture, and calcining in a nitrogen atmosphere to obtain a vanadium-nitrogen alloy; the vanadium-nitrogen alloy is ground into fine powder, the fine powder and iron oxide powder are mixed according to the proportion of 1: (0.05-0.1), secondary calcination is conducted under the CO2-NH3 composite atmosphere, and the low-carbon high-nitrogen vanadium-nitrogen alloy is obtained. According to the method, the problems that the iron catalyst of the vanadium-nitrogen alloy product is inactivated under the high-temperature condition, and the product is high in residual carbon and low in nitrogen due to the contradiction of the reaction conditions between high-temperature deoxidation and low-temperature nitriding are solved at the same time.

The present application relates to the technical field of dehydrogenation, in particular to a dehydrogenation catalyst, a preparation method and application thereof, and an alkane dehydrogenation method. The catalyst contains a carrier, chromium oxide, an auxiliary agent and a solid solution promoter supported on the carrier, the solid solution promoter is selected from one or more of gallium oxide, magnesium oxide and vanadium oxide; wherein the ratio of the central chromium content to the edge chromium content of the catalyst is 0.7-1.1. The catalyst of the present application is used for dehydrogenation reactions such as alkane dehydrogenation reactions, which can effectively reduce the occurrence of side reactions while ensuring high selectivity of the product, and improve the yield of by-product hydrogen.

The invention discloses a positive electrode lithium supplement agent and a preparation method and application thereof. The preparation method comprises the following steps: 1) mixing Li5FeO4 with sulfur powder and an oxygen absorbent to obtain a mixture; wherein the addition amount of the sulfur powder is 0.01-0.2% of the mass of the Li5FeO4; the addition amount of the oxygen absorbent is 0.5-3.0% of the mass of the Li5FeO4; the oxygen absorbent is one or more of nickel protoxide, manganese monoxide and vanadium monoxide; and 2) adding a binder into the mixture in the step 1), granulating in an inert atmosphere to obtain spherical precursor particles, and carbonizing and sintering the spherical precursor particles in the inert atmosphere to obtain the positive electrode lithium supplement agent.

The invention discloses a method for cleanly extracting vanadium from high-calcium vanadium slag of a converter. The method comprises the following steps: firstly, uniformly mixing the high-calcium vanadium slag with a magnesium sulfate solid and / or a solution containing magnesium sulfate, oxidizing and roasting at 500-700 DEG C for 30-60 minutes, heating to 850-900 DEG C, oxidizing and roasting for 30-90 minutes, cooling, and grinding to obtain a roasted material; carrying out primary acid leaching on the roasted material, and carrying out solid-liquid separation to obtain primary leachate and primary residues; ammonium sulfate is added into the primary leachate for high-temperature vanadium precipitation, ammonium polyvanadate and vanadium precipitation supernatant are obtained, and a vanadium oxide product is obtained after ammonium polyvanadate is calcined; the vanadium precipitation supernatant is mixed with the primary residues, secondary leaching is conducted, solid-liquid separation is conducted, and secondary leaching liquid and secondary residues are obtained; and finally, the secondary leaching solution can be used as an additive to be mixed and roasted with the high-calcium vanadium slag again for recycling. The process is simple and easy to implement, the leaching rate of vanadium and cleaning treatment of wastewater are improved by reasonably controlling the roasting conditions and recycling the secondary leachate, and the method has good environmental benefits and industrial application prospects.

Embodiments herein disclose a high-performance Vanadia-based catalyst designed for the efficient oxidation of sulfur dioxide (SO₂) to sulfur trioxide (SO₃) at significantly lower operating temperatures, with optimal performance around 400°C, a temperature lower than traditionally required by conventional catalysts. The catalyst consists of vanadium pentoxide (V₂O₅) as the active component, supported on naturally occurring uncalcined diatomaceous earth, combined with alkali metal promoters. A unique feature of the support material is the use of a mixture of relatively soft diatomaceous earth, exhibiting a percentage reduction of at least 35% in D50 particle size when measured by dry versus wet methods, alongside relatively hard diatomaceous earth to enhance mechanical strength. The catalyst demonstrates SO₂ conversion rates of 50-57% at 400°C and reaches a maximum of 80% at 410°C, surpassing benchmark catalysts that require higher temperatures (around 420°C) for similar conversions.

The invention relates to a preparation method of vanadium dioxide, and belongs to the technical field of chemical engineering. The preparation method comprises the following steps: calcining ammonium metavanadate to obtain vanadium pentoxide, adding the vanadium pentoxide and oxalic acid into a sulfuric acid solution, heating to 95-100 DEG C, reacting to obtain a tetravalent vanadium solution, cooling the tetravalent vanadium solution, adding ammonia water to adjust the pH value, reacting, cooling, precipitating, filtering and separating to obtain an intermediate product, namely vanadyl hydroxide, the method comprises the following steps: washing the vanadyl hydroxide with fresh water, filtering, and heating the vanadyl hydroxide to 500-600 DEG C to generate vanadium dioxide and water; the method is simple in process and small in pollution, the byproduct ammonia water in the process is recycled, the cost is saved, the finally obtained crystallized liquid is recycled for the next experiment, and secondary pollution is avoided.

The application provides a preparation method of a nitrogen-doped vanadium dioxide positive electrode active material, a positive electrode active material and a battery. The method comprises the following steps: mixing a vanadium source, lysine and water, and performing a hydrothermal reaction after adjusting pH. In the hydrothermal reaction process, the amino group in the lysine is used as a reducing agent to reduce the vanadium source into vanadium dioxide, and meanwhile, the nitrogen element in the lysine is doped into the vanadium dioxide crystal lattice in situ, so that the nitrogen-doped vanadium dioxide positive electrode active material is obtained. The method does not need to add a reducing agent and a nitrogen-containing polymer additionally, and does not need high-temperature calcination, so that the process is simplified, and energy consumption is reduced. The obtained material is uniformly doped with nitrogen, has good conductivity and cycle stability, and when the material is applied to an electrochemical device as a positive electrode active material, the material can provide stable capacity output and a long cycle life.

The invention belongs to the technical field of preparation of vanadium dioxide flexible materials, and particularly relates to a flexible vanadium dioxide-glass fiber cloth composite material and a preparation method thereof. Glass fiber cloth is used as a flexible substrate, and the glass fiber cloth is pretreated by dipping titanium dioxide through a sol-gel method; vanadium pentoxide and oxalic acid are used as raw materials to be dispersed in deionized water, a product VO2 is made to directly grow on the surface of glass fiber cloth through a hydrothermal method, then heat treatment is conducted in a vacuum annealing furnace, and therefore the large-loading-capacity continuous VO2 flexible material is obtained. The flexible VO2 material is large in loading capacity, good in continuity and excellent in MIT performance. The preparation process is simple, special instruments and drugs are not needed, the reaction process is easy to control, the production period is short, the cost is low, and the method is suitable for mass production. And the overall conductivity of the flexible material is maintained while the vanadium dioxide powder with high crystallinity and good morphology is obtained. And the method has a wider application scene and has a large-scale preparation capability.

The invention provides a composite vanadium dioxide nano-particle as well as a preparation method and application thereof. The composite vanadium dioxide nano-particle comprises hollow spherical vanadium dioxide and a tin dioxide coating layer coating the surface of the hollow spherical vanadium dioxide, wherein in the composite vanadium dioxide nanoparticles, the weight content of the tin dioxide coating layer is 1-20%. According to the composite vanadium dioxide nano-particle provided by the invention, the hollow spherical vanadium dioxide is used as an inner core, the tin dioxide is used as a coating layer, and the content of the tin dioxide coating layer is further controlled, so that the obtained composite vanadium dioxide nano-particle has more excellent thermochromic performance, photosensitivity and oxidation resistance; further, the composite vanadium dioxide nano-particles can have a wider application scene in the field of thermochromic materials.

The application belongs to the field of phosphate inorganic material preparation, and relates to a method for preparing titanium-vanadium doped iron phosphate, which comprises the following steps: adding titanium and / or vanadium compounds into an iron phosphate complex solution to prepare an iron phosphate complex solution containing titanium and / or vanadium doped metal compounds, and then adding water into the mixed solution and heating to obtain titanium and / or vanadium ion doped iron phosphate; the titanium compound is selected from metatitanic acid, nano titanium dioxide, titanyl sulfate, titanyl oxalate, titanium citrate, titanium lactate or titanium tartrate; the vanadium compound is vanadium trioxide, vanadium dioxide (IV), vanadium pentoxide, vanadium monoxide, vanadium sulfate or vanadium trichloride. In addition, alternative solutions of adding sequence and adding timing change are provided. The application has simple process, is suitable for large-scale industrial production, and improves the electrochemical performance of lithium iron phosphate material in a power battery.

The invention belongs to the field of preparation of phosphate inorganic materials, and relates to a method for preparing titanium-vanadium doped iron phosphate, which comprises the following steps: adding a titanium and / or vanadium compound into an iron phosphate complex solution to prepare an iron phosphate complex solution containing a titanium and / or vanadium doped metal compound; adding water into the mixed solution, heating to obtain titanium and / or vanadium ion doped iron phosphate, and the titanium compound is selected from metatitanic acid, nano titanium dioxide, titanyl sulfate, titanyl oxalate, titanium citrate, titanium lactate or titanium tartrate; and the vanadium compound is vanadium trioxide, vanadium dioxide (IV), vanadium pentoxide, vanadium monoxide, vanadyl sulfate or vanadium trichloride. In addition, the invention also provides an alternative scheme for changing the adding sequence and the adding opportunity. The method is simple in process and suitable for large-scale industrial production, and the electrochemical performance of the power battery of the lithium iron phosphate material is improved.

The invention relates to the field of coatings, and discloses an intelligent thermal insulation coating and a preparation method and composition thereof, the composition comprises the following components by mass: 5-15% of cesium tungsten bronze slurry, 10-30% of vanadium dioxide slurry, 30-70% of a film-forming agent, 5-25% of a diluent and 0-10% of other auxiliary agents; wherein the cesium tungsten bronze slurry is prepared from the following components in percentage by mass: 10 to 30 percent of cesium tungsten bronze nano powder, 69 to 88 percent of a first solvent and 1 to 2 percent of a first dispersing agent, and the vanadium dioxide slurry is prepared from the following components in percentage by mass: 10 to 30 percent of vanadium dioxide nano powder, 69.5 to 88.5 percent of a second solvent and 0.5 to 1.5 percent of a second dispersing agent. The cesium tungsten bronze slurry and the vanadium dioxide slurry are blended to prepare the composite heat insulation coating, so that the coating has the advantages of the two heat insulation slurries, not only can realize high visible light transmittance and high infrared rejection rate, but also can bidirectionally adjust infrared light, and has the cost advantage compared with similar products, and meanwhile, the preparation method of the heat insulation coating is simple.

The application discloses modified vanadium dioxide powder and a preparation method thereof, and belongs to the field of vanadium dioxide powder. The method for preparing the modified vanadium dioxide powder comprises the following steps: firstly, preparing VO2 with good crystallinity through a two-step method; then, improving the stability of the VO2 and increasing the number of hydroxyl groups on the surface of the VO2 through water bath modification; and finally, grafting or adsorbing a surface modifier on the VO2 under the mechanical chemical action of ball milling, so as to improve the dispersibility and stability. The VO2 nano-powder prepared by the method has good crystallinity, can isolate external air and moisture, and can enhance the acid resistance, oxidation resistance and environmental durability of the VO2 nano-powder.

The invention belongs to the technical field of wet vanadium extraction, and particularly relates to a method for separating vanadium iron slag through alkali dissolution and preparing vanadium dioxide. The method comprises the following steps that a reducing agent is added into a liquid caustic soda solution, a protective agent is introduced, the vanadium iron slag is added into the liquid caustic soda solution under the stirring condition for reduction alkaline leaching, the reaction temperature ranges from 30 DEG C to 100 DEG C, the reaction time ranges from 60 min to 120 min, black reaction slurry is obtained, the black slurry is subjected to magnetic attraction sedimentation after the reaction is finished, the sedimentation time is smaller than 20 min, the sedimentation liquid level is clear, and the vanadium iron slag is obtained. A lower-layer precipitation phase is subjected to magnetic suction filtering separation, the filtering time is shorter than 15 min, filtrate and supernate are mixed to form vanadium-containing alkali liquor, the vanadium recovery rate reaches 95% or above, and vanadium dioxide can be further prepared; and the filter cake is magnetic slag and can be used as a raw material for ironmaking after being washed with water.

The present invention generally relates to the production of vanillin and related compounds (such as aromatic carboxylic acids, quinones, etc.) involving the oxidative cleavage of aromatic compounds (such as lignin, lignols, cinnamic acid and its derivatives, etc.) under mild reaction conditions. More specifically, the present invention provides processes for the production of vanillin involving the oxidative cleavage of an aromatic compound, such as lignin or ferulic acid, using a peroxide based oxidant, such as hydrogen peroxide, in the presence of a suitable catalysis, such as vanadium oxide.

The invention discloses a switchable metamaterial absorber based on vanadium dioxide and graphene and a dynamic tuning method, and relates to the technical field of terahertz wave devices. The absorber is formed by continuously splicing periodic unit structures on a plane in an array form, and each periodic unit structure is sequentially provided with a vanadium dioxide-graphene composite metasurface, a dielectric layer and a metal reflecting layer from top to bottom; the vanadium dioxide-graphene composite metasurface is composed of a patterned graphene disc and three fan-shaped structure vanadium dioxide layers distributed around the graphene disc in the circumferential direction, the insulation-metal phase change state of vanadium dioxide and the Fermi level of graphene are regulated and controlled through external excitation, and flexible switching between broadband absorption and double-narrow-band absorption can be achieved. The absorber has the advantages of being compact in structure, easy and convenient to prepare, insensitive to polarization and the like, has excellent dynamic tuning performance and wide-angle stability, and has integration and multifunctional application prospects in the fields of terahertz communication, imaging, biosensing, environment monitoring and the like.

This invention relates to a sodium-ion battery cathode material, its preparation method, and its applications, belonging to the field of secondary battery technology. The core of this cathode material is a two-phase composite of vanadium trioxide and sodium vanadium phosphate-based cathode materials. Vanadium trioxide possesses metal-like properties, and its intrinsic channel structure greatly facilitates ion transport. Therefore, the presence of vanadium trioxide can improve the low intrinsic conductivity of sodium vanadium phosphate-based cathode materials, enhancing their rate performance. Simultaneously, the localized structural distortion and chemical-mechanical coupling at the phase interface of the coexisting two phases accelerate ion and electron diffusion, generating additional electrochemical active sites and mitigating volume expansion, thereby enhancing structural stability. Furthermore, substituting vanadium elements at vanadium sites in the sodium vanadium phosphate-based cathode material with substitution elements mitigates environmental and cost issues caused by the inherent properties of vanadium. Finally, the carbon-based shell enhances the electronic conductivity of the cathode material.

The invention provides a vanadium dioxide nanowire as well as a preparation method and application thereof. The preparation method comprises the following steps: a) mixing a vanadium source, water and a reducing agent, and carrying out reduction reaction to obtain a first solution; and b) mixing the first solution obtained in the step a) with a surfactant and a pH regulator, adding a titanium sheet, carrying out a hydrothermal reaction, taking out the reacted titanium sheet, separating a product growing on the titanium sheet, and drying to obtain the vanadium dioxide nanowire. Compared with the prior art, low-cost and high-efficiency production of the vanadium dioxide nanowire is realized by optimizing the preparation process, and the prepared vanadium dioxide nanowire has high specific surface area and excellent conductivity and mechanical flexibility, can effectively improve the rate capability and cycling stability of the aqueous zinc ion battery, and has a wide application prospect. And under the current density of 10A / g, the specific capacity can reach 172mAh / g, and the capacity retention rate reaches up to 80% after 1000 cycles.

The invention relates to the technical field of coatings, in particular to a multiband synergistic camouflage coating and a preparation method thereof. The invention discloses a multiband synergistic camouflage coating. The wave-absorbing coating is prepared from the following raw materials: acrylic acid modified polyurethane resin, polysilane modified epoxy resin, acrylic acid modified organic silicon resin, wave-absorbing particles, nano titanium dioxide, filler, activated boron nitride nanosheets, graphene oxide, hollow carbon microspheres, pyrrole monomers, an oxidizing agent, nano vanadium dioxide, a dispersing agent, a flatting agent, a defoaming agent, an anti-settling agent, extinction powder and trimethylolpropane tris [ 3-(2-methyl aziridinyl) propionate]. The obtained coating is good in wave absorbing effect, can realize multiband wave absorbing, has the function of reflecting solar radiation, is good in heat stability and scratch-resistant in paint film, and obviously enhances stealth stability; meanwhile, the process is simple and suitable for large-scale popularization and application.