494 results about "Vanadium oxide" patented technology

A vacuum insulating panel may include: a first substrate; a second substrate; a plurality of spacers provided in a gap between at least the first and second substrates, wherein the gap is at pressure less than atmospheric pressure; a pump-out / evacuation tube extending at least partly into an aperture in one of the substrates; and a pump-out / evacuation tube seal. The pump-out / evacuation tube seal may include at least one of: (a) from about 20-80 wt. % tellurium oxide, the tellurium oxide comprising TeO4 and TeO3, wherein the pump-out tube seal comprises more TeO3 than TeO4 by wt. %; and / or (b) tellurium oxide and from about 10-50 wt. % vanadium oxide, wherein the pump-out tube seal by wt. % comprises more tellurium oxide than vanadium oxide, and wherein the vanadium oxide comprises VO2 and V2O5, and wherein more V in the pump-out tube seal is in a form of VO2 than V2O5. A substantially donut-shaped laser beam may be used to heat pump-out tube material in order to form a pump-out tube seal.

The invention belongs to the field of hydrometallurgy, and particularly discloses a high-purity vanadium oxide electrode and a preparation method thereof. The method comprises the following steps: pre-treating the alkaline vanadium leaching solution by using an activated aluminum oxide adsorption column to obtain a pre-treated solution; adding a composite impurity removal agent taking modified lignosulfonate as a main agent into the pretreatment liquid for primary impurity removal to obtain primary impurity-removed filtrate; adding a calcium hydroxide suspension and a flocculating agent into the primary impurity-removed filtrate for secondary impurity removal to obtain secondary impurity-removed filtrate; purifying the secondary impurity-removed filtrate by using an ion exchange column to obtain a purified solution; ammonium salt is added into the purified liquid for vanadium precipitation, and ammonium metavanadate crystals are obtained; calcining the ammonium metavanadate crystal to obtain high-purity vanadium pentoxide; and preparing the high-purity vanadium oxide electrode by using the high-purity vanadium pentoxide. According to the scheme, the high-purity vanadium pentoxide is prepared by taking the alkaline vanadium leaching solution as a raw material through a multi-stage deep impurity removal process, and the high-purity vanadium oxide electrode is prepared by taking the alkaline vanadium leaching solution as the raw material.

The invention relates to the technical field of hydrogen energy, and provides a vanadium oxide catalytic magnesium-based hydrogen storage material based on alkali metal enhancement and a preparation method. The material is prepared from spherical MgH2 powder and lamellar XV6O15 (at) C powder through a high-energy ball milling method, wherein X is one of alkali metals Li, Na and K. The material has a nanoscale composite structure, and the hydrogen storage performance can be remarkably improved. The preparation method comprises the following steps: 1) preparing XV6O15 (at) C nano powder through acid etching, alkali metal modification and heat treatment; and 2) mixing the powder with MgH2 in a protective atmosphere, and preparing the composite material by adopting high-energy ball milling. Results show that the catalyst improves the hydrogen absorption and desorption rate of MgH2, the hydrogen storage temperature is reduced to 50 DEG C for hydrogen absorption, and the hydrogen is rapidly desorbed at 200-225 DEG C. The hydrogen storage dynamics and temperature performance are remarkably optimized, an effective strategy is provided for design and application of a novel magnesium-based composite hydrogen storage material, and the method is suitable for hydrogen energy industrial application.

The invention provides a preparation method of a vanadium electrolyte for an all-vanadium redox flow battery, the vanadium electrolyte and application. The method comprises the following steps: (1) dissolving concentrated sulfuric acid in water to obtain a sulfuric acid solution with a preset concentration, then adding vanadium pentoxide into the sulfuric acid solution, and reacting to obtain a first vanadium solution; (2) the temperature of the first vanadium solution is kept to be the preset temperature, low-valence vanadium oxide is added into the first vanadium solution for reaction, water or hydrochloric acid is supplemented in the reaction process, a second vanadium solution is obtained, and the low-valence vanadium oxide is vanadium oxide with the valence of 3-3.5; and (3) filtering the second vanadium solution to obtain the vanadium electrolyte. The method provided by the invention can save energy consumption, reduce cost and improve dissolution efficiency.

The invention discloses a bifunctional chiral metamaterial surface capable of switching polarization conversion and wave absorption, and belongs to the technical field of electromagnetic metamaterials. The method is used for solving the problem that most existing chiral super-structure surfaces cannot realize dynamic adjustability and quantitative controllability and cannot have dual functions of polarization conversion and wave absorption at the same time. The super-structure surface unit structure is composed of a graphene film layer, a gold-vanadium dioxide resonance layer, a silicon dielectric layer and a bottom-layer continuous gold film. Switching of two functions of polarization conversion and wave absorption is realized by changing the conductivity of vanadium dioxide; polarization conversion and dynamic regulation and control of the wave absorbing efficiency are realized by changing the Fermi level of the graphene; quantitative controllability of polarization conversion and a wave absorbing function is realized by controlling a function weighting function. Besides, the chiral super-structure surface also has the advantages of incident angle robustness, small thickness and small size, has double functions of broadband, and has potential application value in the fields of optical devices, communication equipment, biomedical sensors and the like.

The invention provides a coding metasurface with terahertz wave absorption and reflection functions and application, the coding metasurface comprises at least one coding unit arranged in an array, each coding unit comprises a top resonance layer, a dielectric layer and a metal reflection layer which are sequentially arranged from top to bottom, the top resonance layer comprises a graphene resonance layer and a vanadium dioxide phase change layer, and the dielectric layer comprises a dielectric layer and a metal reflection layer. The graphene resonance layer comprises square graphene, the vanadium dioxide phase change layer comprises a square vanadium dioxide outer ring and a vanadium dioxide strip embedded in the vanadium dioxide outer ring, the vanadium dioxide outer ring is located on the inner side of the graphene, and the square edge of the vanadium dioxide outer ring and the square edge of the graphene are arranged in parallel at an interval; wherein the vanadium dioxide strips are arranged at the diagonal positions of the vanadium dioxide outer ring and are arranged at intervals with the vanadium dioxide outer ring, the advantages of a wave-absorbing metasurface and a reflection coding metasurface are integrated, and the signal generation power of 6G communication is greatly optimized.

A vacuum insulating panel may include: a first substrate; a second substrate; a plurality of spacers provided in a gap between at least the first and second substrates, wherein the gap is at a pressure less than atmospheric pressure; a seal provided between at least the first substrate and the second substrate, the seal comprising a first seal layer; wherein the first seal layer comprises tellurium oxide and vanadium oxide; wherein the first seal layer comprises, on a wt. %, more tellurium oxide than vanadium oxide, and has a density of from about 2.8-4.0 g / cm3.

The invention discloses a vanadium oxide-based supported platinum catalyst and a preparation method and application thereof, and the preparation method comprises the following steps: a) carrying out high-temperature heat treatment on a V precursor to obtain orange V2O5 carrier powder; b) adding V2O5 powder, a Pt metal precursor and a sacrificial reagent into the solution, carrying out ultrasonic treatment, stirring, and reacting under the irradiation of a xenon lamp to obtain a dark brown suspension; c) centrifuging, washing, drying, grinding and roasting the dark brown suspension to obtain dark brown powder; and d) carrying out three times of high-temperature heat treatment on the dark brown powder under different protective gases, and sequentially carrying out three processes of oxidation, reduction and partial oxidation to obtain the vanadium oxide-based platinum-loaded catalyst. The catalyst prepared according to the invention is applied to a carbon monoxide oxidation reaction, and has the advantages of excellent catalytic performance, long-time stability and good recycling stability at a high space velocity.

The invention discloses a vanadium dioxide-based spin coupling and decoupling dynamic switching metasurface. The unit structure of the metasurface is divided into three reflecting layers; a dielectric layer; the metal layer is of an S-shaped structure and comprises a rectangle in the middle and circular arcs at the two ends, the rectangle is made of gold, and the circular arcs are made of vanadium dioxide; when vanadium dioxide is in a metal state, adjusting an opening angle alpha between the arc and the rectangle and a rotation angle theta of the metal layer around an X axis, and realizing decoupling of left-handed polarized light and right-handed polarized light through combination of a PB phase and a transmission phase; when vanadium dioxide is in an insulated state, the PB phase is regulated and controlled only by rotating the angle theta, and coupling of left-handed polarized light and right-handed polarized light is achieved. Compared with other coding metasurfaces, the modulation mode is simpler, the design is more flexible, the functions are more diversified, the defect that the function of the metasurface is fixed is overcome, the coupling characteristic and the decoupling characteristic of left-handed and right-handed polarized light are integrated together, and the application prospect of a coding metasurface device is expanded.

An optical component includes a substrate and an anti-reflective film. The substrate has an aspherical surface through which light passes. The anti-reflective film is disposed at least on the aspherical surface and includes a nanostructure layer and an intermediate layer. The nanostructure layer includes ridge-like protrusions that are non-directionally extended. A bottom of the ridge-like protrusions is closer to the substrate than a top of the ridge-like protrusions. The ridge-like protrusions gradually taper from the bottom toward the top. An average structural height of the ridge-like protrusions ranges from 108 to 368 nm. The intermediate layer is between the nanostructure layer and the substrate. A main component of the nanostructure layer is aluminum oxide. The nanostructure layer includes a metallic doping agent at least partially distributed inside the ridge-like protrusions. The metallic doping agent includes at least one of titanium, vanadium, chromium, titanium oxide, vanadium oxide, and chromium oxide.

The invention discloses a micron-sheet rare-earth-based denitration and chlorobenzene removal catalyst as well as a preparation method and application thereof. The catalyst takes micron-sheet reduced graphene oxide as a carrier, a composite oxide of cerium oxide and vanadium oxide as an active component and a hexahydrotriazinyl covalent organic framework as an active site protective agent; on the basis of the mass of the carrier, the mass percentage of the active component is 5-10%, and the mass percentage of the active site protective agent is 1-5%. The catalyst synthesized by the method has the advantages of high specific surface area, difficult deposition of ammonium bisulfate, long service life, stable activity and the like, and can realize the target of low-temperature denitration and chlorobenzene removal in the non-electric industry.

The present disclosure provides a process for the separation and purification of radium and actinium from acidic solution using composite adsorbents. The process includes preparing polyoxometalates (POMs)-based mesoporous composite metal-infused resins using phosphate recovered from waste buffer solution. The resins are prepared using a modified sol-gel technique to form inorganic composite metal-oxide clusters. Embodiments of the resins include silica-coated composite metal oxide particles, including antimony-vanadium oxide particles, and tungsten-doped mesoporous titanium oxide particles. The resins have differing adsorption affinities for actinium, radium, and other metal ions and may thus be utilized for selectively separating radium and actinium from irradiated thorium targets.

The invention discloses a vanadium oxide material for an aqueous zinc ion battery. The material is constructed by self-assembling small organic molecules on the surface of vanadium oxide at room temperature under the dual action of hydrogen bonds and hydrophilic functional groups. When the material is used as a positive electrode material, on one hand, small molecules are tightly adsorbed on the outer layer of the vanadium-based material through hydrogen bond acting force to inhibit dissolution and structure collapse of the vanadium-based material; on the other hand, the tail ends of the small organic molecules can adsorb water molecules, so that structure collapse caused by excessive water molecules rushing into the interlayer of the vanadium-based positive electrode material is prevented. In the electrochemical reaction period, the small molecular coating vanadium-based material shows high capacity and good cycling stability. The battery installed by the positive electrode material can stably circulate for 275 circles under the current density of 0.5 A g <-1 >, and the capacity can be kept at 270 mAh g <-1 >.

A vacuum insulating panel includes may include: a first substrate; a second substrate; a plurality of spacers provided in a gap between at least the first and second substrates, wherein the gap is at a pressure less than atmospheric pressure; a seal provided between at least the first and second substrates, the seal comprising a first seal layer and / or a second seal layer; and wherein the first seal layer may include from about 20-80 wt. % tellurium oxide, the tellurium oxide comprising TeO4 and TeO3, and wherein the first seal layer comprises more TeO3 than TeO4 by wt. %.

The invention belongs to the technical field of trichlorosilane purification, and discloses an adsorbent for adsorbing phosphorus impurities in trichlorosilane and a preparation method and application thereof.The preparation method comprises the steps that activated carbon is immersed in a solution containing ammonium metavanadate and oxalic acid, ultrasonic treatment and drying are conducted, and a vanadium oxide / carbon material mixture is obtained; calcining the vanadium oxide / carbon material mixture, and performing reduction treatment to obtain the oxygen vacancy-rich activated carbon loaded vanadium oxide adsorbent. The activated carbon loaded vanadium oxide adsorbent rich in oxygen vacancies is prepared by using a dipping-calcining-reducing method, and phosphorus impurities are adsorbed and removed by using the interaction of the activated carbon loaded vanadium oxide adsorbent and PCl3. The active carbon loaded vanadium oxide adsorbent rich in oxygen vacancies interacts with PCl3, so that trace PCl3 can be efficiently removed.

The invention provides sintering flue gas denitration activated carbon and a preparation method thereof.The preparation method comprises the steps that coal-based activated carbon raw material powder and an aqueous solution of a nitrogen-containing compound and a phosphorus-containing compound are evenly mixed, impregnated and dried, and a nitrogen-phosphorus co-doped precursor is obtained; blending the catalytic components to obtain raw material strips; primarily forming pores, and activating for the first time in a water vapor atmosphere; carrying out secondary loading and pore regulation, and carrying out secondary activation to obtain a secondary carbon body; and carrying out heat treatment on the secondary carbon body in an oxygen-containing atmosphere to convert the loaded metal precursor into a metal oxide. According to the invention, through a cascade catalytic network constructed by nitrogen and phosphorus doping and titanium, tungsten and vanadium oxides and an optimized pore channel formed by step-by-step activation of water vapor and carbon dioxide, the denitration efficiency of the catalyst breaks through 80% and is far higher than that of common activated carbon. The sintering flue gas denitration system has high activity and high stability, can greatly reduce the series number of denitration towers, obviously reduces the system resistance and operation energy consumption, and provides an efficient scheme for solving the problems of low sintering flue gas denitration efficiency and high cost.

The invention discloses a molybdenum-vanadium-aluminum intermediate alloy and a low-cost preparation method thereof. The molybdenum-vanadium-aluminum intermediate alloy comprises the following chemical components in percentage by mass: 39-41% of Mo, 39-41% of V and the balance of Al. The method comprises the following steps: uniformly mixing vanadium oxide (tablets replace powder), molybdenum trioxide, metal aluminum, calcium fluoride, calcium oxide and a cold material according to a mass ratio of (28-32): (24-26): (32-35): (10-13): (1.5-4): (5-10); then putting the mixture into a graphite crucible for tamping treatment; and finally, the metal powder is directly ignited for a reduction reaction, and the molybdenum-vanadium-aluminum intermediate alloy can be obtained. According to the method, the recovery rates of the molybdenum and the vanadium are increased by adjusting the components and the ratio of the raw materials and the auxiliary materials and adopting a one-step aluminothermic reduction method, and the recovery rates of the molybdenum and the vanadium can reach 95 wt% or above and 96 wt% or above respectively.

The invention relates to the field of vanadium and chromium separation, and particularly discloses a sodium vanadium solution treatment method which comprises the following steps: S100, adding an alkaline reducing agent into a sodium vanadium solution, and carrying out reduction of hexavalent chromium and selective precipitation reaction of trivalent chromium; s200, at the later stage of the reaction in the step S100, urea is added into a solution system, and a deep removal reaction of silicon and chromium is carried out; and S300, after the reaction in the step S200 is finished, solid-liquid separation is conducted, silicon-chromium slag and purified vanadium liquid are obtained, silicon-chromium oxide is obtained after the silicon-chromium slag is treated and can be used for smelting silicon-chromium alloy, and the purified vanadium liquid is subsequently used for preparing a high-purity vanadium oxide product. According to the method, the vanadium sodium salt solution obtained through a vanadium slag sodium salt roasting-water leaching process is used as a raw material, hexavalent chromium in the solution is reduced through an alkaline reducing agent, selective precipitation separation of hexavalent chromium and vanadium is achieved, and meanwhile urea is supplemented to conduct synergistic precipitation removal on silicon in the solution.

The invention relates to the technical field of catalysts, in particular to a composite catalyst for nitrous oxide decomposition and a preparation method thereof.The composite catalyst is of a three-dimensional flower-shaped structure and comprises a composite carrier and active metal loaded on the composite carrier; the composite carrier is composed of a modification additive and a carrier oxide; the performance additive is composed of alkali metal oxide and rare earth metal oxide; the carrier oxide is selected from one of aluminum oxide, titanium dioxide and silicon dioxide; the active metal comprises cobalt oxide and vanadium oxide. The multi-metal catalyst has the advantages that the multi-metal catalyst with a three-dimensional flower-shaped structure is formed by loading cobalt and vanadium active metals on aluminum oxide and under the synergistic effect of alkali metal and rare earth metal, so that the stability and durability of the catalyst in a high-temperature environment are remarkably improved.

The invention belongs to the technical field of energy and storage, and discloses a Fe-V-O material for an aqueous zinc ion battery positive electrode and a preparation method and application thereof, and the Fe-V-O material for the aqueous zinc ion battery positive electrode is a mixture of a Fe < 3 + > doped vanadium oxide nano material (in a nano flower structure formed by sheet stacking), a conductive agent and a binder; the preparation method comprises the following steps: by taking vanadyl acetylacetonate and inorganic iron (III) metal salt as raw materials, synthesizing a Fe < 3 + >-doped vanadium oxide nano material by a one-step hydrothermal method, and uniformly mixing and grinding the Fe < 3 + >-doped vanadium oxide nano material with a conductive agent and a binder, thereby obtaining the Fe < 3 + >-doped vanadium oxide nano material, according to the application of the Fe-V-O material, the Fe-V-O material for the positive electrode of the aqueous zinc ion battery is loaded on a titanium mesh current collector to serve as a positive electrode material, and the aqueous zinc ion battery is assembled. The preparation process is simple and efficient, and the prepared aqueous zinc ion battery has excellent electrochemical activity, relatively high rate capability and excellent long cycle stability.

The invention discloses an uncooled infrared detector and a manufacturing method thereof, and relates to the technical field of detectors, the uncooled infrared detector comprises a readout circuit, the readout circuit is provided with a micro-bridge structure and an umbrella-shaped absorption structure, the micro-bridge structure comprises a metal electrode, a reflecting layer, a first sacrificial layer, a first supporting layer, an electrode layer and a thermosensitive layer, and the electrode layer is arranged on the supporting layer. The thermosensitive layer is arranged on the electrode layer, and the first passivation layer is arranged at the top of the microbridge structure. By adopting the thermosensitive layer with a three-layer structure of vanadium oxide, vanadium and vanadium oxide and optimizing sputtering process parameters, the sensitivity and the stability of the thermosensitive film are improved, secondly, due to the design of an umbrella-shaped absorption structure and the synergistic effect of the second sacrificial layer, the second supporting layer and the absorption layer, the absorption rate and the filling rate of an infrared pixel are improved, and the stability of the film is improved. Not only is the absorption efficiency of infrared radiation enhanced, but also a heat conduction path is optimized, so that the response speed and the signal-to-noise ratio of the detector are improved.

The invention provides a method for preparing a nearly 3.5-valent vanadium electrolyte by reducing ammonium metavanadate with coke oven gas, which comprises the following steps: (1) reducing and calcining ammonium metavanadate in coke oven gas to obtain a reduced product; (2) carrying out replacement deamination on the reduced product in the step (1) to obtain a nearly 3.5-valent vanadium oxide, wherein the nearly 3.5-valent vanadium oxide contains V4O7; and (3) a mixed sulfuric acid solution and the approximately 3.5-valent vanadium oxide are subjected to a dissolution reaction, and the approximately 3.5-valent vanadium electrolyte is obtained. The process method disclosed by the invention is simple and easy to implement, the approximately 3.5 valence vanadyl sulfate electrolyte product with high vanadium concentration and low ammonia content can be obtained by taking the ammonium metavanadate and the coke oven gas as raw materials, and the application prospect is wide.

The present invention discloses an ultra-wideband, multi-frequency switchable terahertz absorber based on vanadium dioxide, belonging to the field of terahertz wave technology. The absorber comprises: an ultra-wideband, multi-frequency switchable terahertz absorber unit having a multi-layer structure, wherein, from top to bottom, a mutually bonded upper patterned VO2 layer, an upper SiO2 dielectric layer, a lower VO2 layer, an intermediate patterned gold layer, a lower SiO2 dielectric layer, and a bottom gold layer are sequentially arranged; the upper patterned VO2 layer is disc-shaped, with a square annular slit disposed within the disc; the intermediate patterned gold layer comprises an inner ring, an outer ring, and an open square ring, spaced from the inside out, with the opening of the open square ring disposed in the middle of each edge. The present invention is based on an ultra-wideband, multi-frequency switchable terahertz absorber based on vanadium dioxide. The designed absorber can achieve switching from ultra-wideband absorption to multi-frequency absorption by adjusting the conductivity of the vanadium dioxide through temperature control.

The present invention discloses an electroslag remelting method for reducing vanadium burnout. The vanadium content of the consumable electrode is controlled to be above the upper limit of the target composition of the electroslag blank, and is controlled to exceed the target composition upper limit by 5% to 10%. The surface-treated consumable electrode is coated with, from the inside out, an aluminum powder layer and / or a vanadium monoxide powder layer, and a corundum powder layer. During the electroslag remelting stage, electroslag is added to the crystallizer, and the average thickness of the slag pool is controlled to be 1 / 3 to 1 / 2 of the equivalent diameter of the consumable electrode being melted. At the same time, inert gas is blown into the crystallizer at a flow rate of 5 to 20 L / min. During the feeding stage, electroslag is again added to the crystallizer, and the thickness of the slag pool is controlled to be 1 / 2 to 1.0 of the equivalent diameter of the consumable electrode being melted. The inert gas flow rate is controlled at 10 to 30 L / min. By spraying the surface of the consumable electrode, the present invention effectively prevents secondary oxidation of the vanadium element in the consumable electrode during the electroslag remelting process, thereby reducing vanadium burnout and solving the problem of poor control stability of the burnout rate of the easily oxidized element vanadium.

The invention provides a hydrogel-based radiation refrigeration moisture power generation material and a preparation method and application thereof, and belongs to the technical field of moisture power generation materials.The hydrogel-based radiation refrigeration moisture power generation material comprises a nano carbon black layer, a conductive hydrogel layer and a titanium dioxide layer which are sequentially stacked; the conductive hydrogel layer comprises a hydrogel matrix, a conductive filler and a temperature-sensitive material; the temperature-sensitive material comprises at least one of poly (N-isopropylacrylamide), a polyethylene glycol and polylactic acid copolymer and vanadium oxide; the cross section of the hydrogel-based radiation refrigeration moisture power generation material is of a W-shaped structure. The conductive hydrogel layer is of a three-dimensional network structure with conductivity and temperature-sensitive characteristics; the titanium dioxide layer realizes efficient sunlight reflection, the nano carbon black layer enhances heat conduction and conductivity, and the W-shaped structure promotes moisture flow and circulation; the multifunctional power generation device prepared based on the hydrogel-based radiation refrigeration moisture power generation material has good radiation refrigeration and moisture power generation performance, and is excellent in stability and durability.

The invention relates to a vanadium oxide coated and zirconium-doped modified precursor and a preparation method and application thereof.According to the preparation method, zirconium doping and an ammonium vanadate solution are specifically used, cation mixing is inhibited through the stabilization effect of zirconium, lattice distortion is reduced, the stable unit cell volume can be maintained through zirconium doping, and the stability of the unit cell volume is improved; and the problem of unit cell expansion caused by conventional doping elements is avoided, so that the high-rate performance of the material is reserved. The semiconductor-metal phase change characteristic of vanadium oxide is utilized, the critical temperature can be adjusted to be close to the room temperature, and the high-temperature stability and electronic conductivity of the material are improved; through the combination of the two, the high-rate discharge performance of the ternary positive electrode material and the structural stability of the material can be greatly improved.

A lithium-ion battery anode material containing surface-coated disordered rocksalt lithium vanadium oxide is disclosed. The surface coating contains a species selected from the group consisting of carbon, a metal oxide, a metalloid oxide, a metal fluoride, a metalloid fluoride, a metal phosphate, a metalloid phosphate, and combinations thereof. Materials, designs, synthesis methods, and devices related to fast-charging lithium-ion batteries are provided. This invention fills a technology gap by providing anode materials with disordered rocksalt lithium vanadium oxides to achieve fast charging in 10 minutes or less, greater than 200 W·h / kg energy density, a lifetime of at least 10,000 cycles, and improved battery safety. Methods of making and using the optionally surface-coated disordered rocksalt lithium vanadium oxide are disclosed. Many experimental examples are included, demonstrating several remarkable attributes of this battery technology.

A nanocomposite electrode including a substrate, a binding compound, a conductive additive, and zinc doped molybdenum vanadium oxide (ZMV) nanorods. The substrate is at least partially coated on a first side with a mixture including the ZMV nanorods, the binding compound, and the conductive additive. A battery including the nanocomposite electrode.

The invention relates to the field of catalysts. The invention relates to a catalyst for catalytic oxidation of carbon monoxide in industrial sulfur-containing flue gas. A carrier is a cordierite honeycomb ceramic carrier coated with activated aluminum oxide (Al2O3), silicon oxide (SiO2) or titanium oxide (TiO2), or a honeycomb carrier with titanium oxide as a skeleton; the noble metal active component is selected from one or a combination of more of palladium (Pd), platinum (Pt) and rhodium (Rh), the total loading capacity accounts for 0.05-0.4 wt% of the mass of the carrier, and the noble metal component is loaded on the surface layer of the carrier at the depth of 10-300 microns and is of an eggshell type distribution structure; the cocatalyst component is selected from one or a combination of more of vanadium oxide (VO), tungsten oxide (WO), cerium oxide (CeO), molybdenum oxide (MoO) and lanthanum oxide (La2O3) and is uniformly distributed on the carrier. Unification of activity, stability and economical efficiency of the catalyst is achieved, the problems that a catalytic oxidation catalyst is prone to inactivation, low in activity and high in cost in complex sulfur-containing flue gas are solved, and the industrial application value is remarkable.

The invention discloses a vanadium oxide nanosheet aggregate self-supporting electrode material and a preparation method thereof.The preparation method comprises the steps that 1, 0.5-1 g of ammonium metavanadate, 0.5-1 mg of oxalic acid and 0.1-0.4 g of mesoporous molecular sieve MCM-48 are taken and added into 20-40 mL of ultrapure water, full stirring is conducted, and a mixed solution is obtained; step 2, putting pretreated foamed nickel into the mixed solution in the step 1, putting the mixed solution into a reaction kettle, putting the reaction kettle into a drying oven, and carrying out hydrothermal reaction at 140-180 DEG C; 3, after the reaction is finished, the reaction kettle is naturally cooled to the room temperature, the foamed nickel is taken out, the foamed nickel is subjected to water washing and alcohol washing alternately, the foamed nickel is placed in air to be naturally aired after washing, and the uniform vanadium oxide nanosheets are obtained. The vanadium oxide nanosheet aggregate self-supporting electrode material is prepared by adopting a low-temperature one-step hydrothermal synthesis method, the vanadium oxide nanosheet aggregate self-supporting electrode material has a unique microstructure, namely a nanosheet with the thickness of 100-200nm, and the structure can greatly improve the electrochemical performance and catalytic performance of vanadium oxide serving as an electrocatalyst.