254 results about "Chemical activity" patented technology

The invention relates to a honeycomb catalyst for CO and NOx synergistic coupling removal and a preparation method, the catalyst takes nano TiO2-CeO2 as a carrier, and the surface of the carrier is loaded with an active component; the active component comprises a main catalyst and an auxiliary catalyst, the main catalyst is LaCuOx active powder, and the auxiliary catalyst is SmFeOx active powder. According to the present invention, the active material of the conventional catalyst is changed, and the carrier performance of the conventional catalyst is modified, such that the catalyst has good chemical activity and good thermal stability so as to achieve the purpose of stable and synergistic CO removal and NOx removal; meanwhile, the catalyst material is high in mechanical strength and long in chemical life, and the water resistance and the sulfur resistance of the catalyst material are also verified.

The invention discloses a synthesis method of a hydrazine dicarboxylate modified cerium dioxide abrasive, and belongs to the technical field of precise polishing materials. The method comprises the following steps: taking cerous nitrate as a raw material, and preparing a cerous carbonate precursor through an ammonium carbonate precipitation reaction; and grinding and calcining the obtained precursor and hydrazine dicarboxylate to obtain the CeO2 grinding material with the surface rich in oxygen vacancies. And Ce < 4 + > can be partially reduced into Ce < 3 + > by reducing fragments generated by decomposition of the hydrazine dicarboxylate in the calcining process, so that an oxygen vacancy structure is formed through induction, and the chemical activity and the reaction rate of the abrasive are improved. The obtained grinding material shows excellent performance in chemical mechanical polishing (CMP) of K9 glass, the material removal rate (MRR) is increased by about 3.6 times compared with that of unmodified CeO2, the surface roughness (Ra) is reduced to about 0.16 nm or below, and grinding material particles are good in dispersity and less in agglomeration. The used hydrazine dicarboxylate is stable, low in toxicity and mild in reaction, and the particle size can be prevented from excessively growing while the high oxygen vacancy concentration is kept.

The invention discloses zwitterion co-doped CeO2 abrasive particles and a preparation method and application thereof.The preparation method includes the steps that a cerium source and a soluble carbonate precipitator are subjected to an aging reaction to obtain a cerium-based precursor, and the cerium-based precursor, fused salt, metal ions and a fluorinating agent are mixed and then roasted to obtain the zwitterion co-doped CeO2 abrasive particles; the synthesis method is simple, the size is controllable, the particle size distribution is uniform, and the spherical-like zwitterion co-doped CeO2 abrasive particles are obtained; the co-doped CeO2 abrasive particles have excellent photo-assisted chemical mechanical polishing performance; when the polishing solution prepared from the sphere-like co-doped CeO2 abrasive particles synthesized by the method is used for processing the surface of quartz glass, the material removal rate reaches 988.69 nm / min, and a high material removal rate is obtained due to the fact that the co-doped CeO2 abrasive particles synthesized by the two-step method shorten the forbidden bandwidth and have high chemical activity, so that the material removal rate is favorably improved.

The invention discloses a preparation method of plasma activated water based on a micro-nano bubble synergistic effect, and mainly solves the technical problems that the generation efficiency of liquid-phase active particles in the plasma activated water prepared by the existing method is low, the chemical activity of the plasma activated water is difficult to maintain and the like. The preparation method comprises the following steps: introducing micro-nano bubbles into pure water until the pure water is saturated to obtain micro-nano bubble water; then performing plasma activation treatment on the micro-nano bubble water within 3 minutes to obtain plasma activated water based on the micro-nano bubble synergistic effect; the gas adopted by the micro-nano bubbles is one of air, oxygen, nitrogen or helium. The chemical activity of the plasma activated water is enhanced, the maintenance time of the activity of the activated water is greatly prolonged, efficient production and long-acting storage of the plasma activated water are facilitated, and the method has great significance in biomedical application of the plasma activated water.

Described herein are electrochemically active-material structures comprising silicon and one or more inert elements, such that these inert elements are chemically and / or atomically dispersed. Also described are negative battery electrodes and lithium-ion electrochemical cells comprising such electrochemically active-material structures as well as methods of fabricating such structures, electrodes, and lithium-ion electrochemical cells. Some examples of atomically-dispersed inert elements include, but are not limited to, hydrogen (H), carbon (C), nitrogen (N), and chlorine (Cl). Unlike silicon, inert elements do not interact with lithium at an operating voltage of the negative battery electrode and therefore do not contribute to the overall cell capacity. At the same time, these inert elements help to mitigate silicon swelling by operating as a mechanical buffer, support structure, and / or additional conductive pathways. Such electrochemically active-material structures can be formed by reacting (chemically or electrochemically) one or more precursors that include silicon and corresponding inert elements.

The invention discloses a modified fly ash adsorbent for carbon dioxide capture and a preparation method and application thereof.The preparation method comprises the steps that original fly ash is ground into fly ash fine powder, the fly ash fine powder is subjected to stepped heating fluidization calcination in the N2 atmosphere containing water vapor, then microwave crushing treatment is conducted, and fly ash subjected to physical reaming treatment is obtained; carrying out alkali fusion reaction on the coal ash subjected to physical chambering treatment and alkali at high temperature, then alternately pickling by using two different acids to remove impurities, and carrying out oxidation treatment by using an oxidizing solution to increase surface alkaline sites and chemical activity so as to obtain chemically modified coal ash; loading a functional reagent on the chemically modified fly ash, reacting at a preset temperature, then adding a metal ion solution to carry out ion exchange, and then drying and carrying out hydrophobic modification to obtain the modified fly ash adsorbent. According to the invention, physical-chemical synergistic modification of fly ash is adopted to prepare the adsorbent with high adsorption performance, and the adsorbent is applied to capture of carbon dioxide.

The invention relates to the technical field of composite metal materials, in particular to a silver-coated graphene copper composite material and a preparation method thereof, and aims at solving the problems that traditional silver-coated copper powder is high in silver consumption, copper is oxidized due to the fact that a silver layer is prone to being damaged, and conductivity is insufficient. The method comprises the steps that a graphene coating layer is formed on a copper powder substrate in situ through chemical vapor deposition, and graphene copper powder is obtained; performing etching treatment on the graphene copper powder to controllably expose part of the copper substrate so as to form anchoring points for silver ion deposition; carrying out reduction treatment on the etched graphene copper powder so as to ensure that an anchoring site has chemical activity; in a reductive liquid phase environment, enabling a chemical silver plating solution to react with the graphene copper powder subjected to reduction treatment, and guiding silver ion deposition by utilizing an anchoring point, so as to form a silver coating layer on the surface of the graphene coating layer; and separating and drying the reacted system to obtain the silver-coated graphene copper composite material. The material is better in oxidation resistance and conductivity, and the process is free of waste liquid.

The invention discloses lignin-containing nanocellulose based on camellia oleifera fruit and cattail as well as a preparation method and application thereof, and relates to the technical field of production of biomass nanomaterials, the lignin-containing nanocellulose based on camellia oleifera fruit and cattail comprises the following components in percentage by mass: 8%-15% of lignin, 3%-8% of hemicellulose and 70%-90% of cellulose; the preparation method of the lignin-containing nanocellulose comprises the following steps: S1, treating oil tea fruit cattail; s2, performing DES pretreatment on the Camellia oleifera fruit powder; s3, performing acidolysis and centrifugation on the fruit peel cellulose to obtain lignin-containing nano cellulose; s4, dialyzing the nano cellulose containing the lignin; the lignin-containing nanocellulose is used for preparing the LCNF / PVA composite film, and the LCNF / PVA composite film can be used as a food preservative film; the lignin-containing nanocellulose prepared by the preparation method disclosed by the invention has high specific surface area, high surface chemical activity and good biocompatibility and degradability, and is widely applied to the field of food industry.

The invention relates to the technical field of oral care and anhydrous toothpaste, in particular to bioactive glass-containing anhydrous toothpaste based on rheological property regulation and control and a preparation method and application thereof.The anhydrous toothpaste adopts glycerin and polyethylene glycol as a humectant compound system to construct an anhydrous system, and the situation that active ingredients of bioactive glass lose efficacy when meeting water is avoided; and the chemical activity and the structural stability can be kept during long-term storage. A thickening agent compound system composed of carbomer, quaternary ammonium salt-22 and hydroxypropyl gelatin is cooperatively adopted, so that a rigid-soft, compact and firm spatial network structure can be formed, an abrasive and bioactive glass particles can be stably suspended for a long time, the high activity of bioactive glass is kept, and the bioactivity of the bioactive glass is improved. And in the aspect of rheological properties, the composite material shows excellent thixotropy, relatively high structure recovery rate and appropriate yield stress, and has a remarkable remineralization repair effect and an excellent sensory effect. And the preparation process is simple, low in cost and suitable for large-scale industrial production.

The invention relates to the technical field of metal material connection and surface engineering, in particular to MAB phase reinforced Cu-Sn-Ti active brazing filler metal and a preparation method thereof. According to the MAB phase enhanced Cu-Sn-Ti active brazing filler metal, an MAB phase serves as a strengthening phase and is layered ternary boride ceramic, M is Mo or Cr, A is Al, and the brazing filler metal comprises, by mass, 60%-65% of Cu powder, 15%-18% of Sn powder, 10%-12% of Ti powder and the balance MAB powder. The MAB phase ceramic with a unique layered structure and chemical activity is introduced, the interface reaction of a diamond / steel substrate can be actively regulated and controlled while dispersion strengthening of the brazing filler metal substrate is achieved, a tough and tough combined gradient interface is formed, and therefore the diamond composite wear-resistant coating with excellent comprehensive performance is obtained.

The invention discloses a surface cleaning method for a large complex magnesium alloy structural part formed through electric arc additive manufacturing, and belongs to the field of post-treatment of formed structural parts after electric arc additive manufacturing. The method comprises the following steps that a mechanical arm is adopted to drive a special wire brush to conduct preliminary mechanical cleaning, and flexible contact is achieved through a mechanical sensor and a floating clamp; acidic cleaning liquid is sprayed to the surface of the workpiece through an ultrasonic spraying system, the surface color change is monitored in real time through a high-speed camera so as to control the reaction endpoint, and flushing and drying are conducted in time; and finally, carrying out fine cleaning under the protection of argon by adopting large-light-spot laser with low power density, and monitoring in real time through a spectrograph to ensure the cleaning effect. According to the method, the oxide layer and the pollutants on the surface of the large complex component can be efficiently, losslessly and automatically removed, the problem that the magnesium alloy WAAM component is difficult to clean due to high chemical activity and complex structure is solved, and the whole process is environmentally friendly and controllable.

The application provides a method for inkjet printing of oligonucleotides, and belongs to the technical field of in-situ synthesis of oligonucleotides.The method comprises the following steps: modifying the surface of a solid carrier with a chemically active functional group; depositing oligonucleotide synthesis reagents onto the surface of the modified solid carrier by inkjet to perform in-situ synthesis; and the solvent in the oligonucleotide synthesis reagents comprises one or two of glutaronitrile, acetonitrile and propylene carbonate.The application uses a new type of difficult-to-vaporize solvent, greatly reduces the volatilization of reagents during inkjet synthesis and the generation of organic vapors during synthesis, and thus maintains a high in-situ synthesis reaction efficiency of oligonucleotides.

The invention belongs to the field of automobile interior manufacturing, and discloses an automobile interior real wood surface digital printing process which comprises the following steps: S1, preparing a base material: selecting a wood veneer of 0.3-0.6 mm, cutting the wood veneer, polishing, spraying water for humidifying and mechanically leveling; the surface of the wood veneer is colored and sprayed with a transparent resin protection layer, then the surface of the protection layer is treated through a plasma surface treatment technology, and the surface energy and the chemical activity of the protection layer are improved; s3, digital printing: coating the surface of the treated protective layer with a bottom coating liquid, printing a pattern by using digital jet printing equipment, and then carrying out UV curing; s4, interior trim part forming, wherein the printed and cured wood veneer is attached to the automobile interior trim plastic base material at the temperature of 55-60 DEG C; and S5, surface layer protection: applying transparent protective finish paint on the surface of the laminated product. The process can solve the problems that the printing definition of an ink layer on the real wood surface of the existing automotive trim is low, and the ink layer is easy to peel, wrinkle and bloom in the processing or using process.

The invention discloses a multi-system new energy battery wide-temperature-range fire extinguishing material based on a selenium vacancy heterogeneous interface. The multi-system new energy battery wide-temperature-range fire extinguishing material is prepared from the following raw materials in percentage by weight: 6 to 10 percent of Vse-CoSe2 / FeSe2, 82 to 89 percent of carrier, 3 to 5 percent of ZrSe2 and 1 to 3 percent of polydiselenothiophene. The invention also provides application of the fire extinguishing material in a battery fire extinguishing agent. By precisely regulating the selenium vacancy concentration of the heterogeneous interface to be 5 * 10 < 18 >-1 * 10 < 20 > / cm < 3 > and the lattice matching degree to be smaller than or equal to 5%, directional inhibition of thermal runaway reactions of different battery systems is achieved, and the method is particularly suitable for battery safety protection in an extreme temperature environment (-45-600 DEG C). The fire extinguishing material maintains physical stability (no solidification / decomposition) and chemical activity (90% of free radical quenching efficiency gt) in a range of-45 DEG C (a vehicle-mounted battery in an extremely cold region) to 600 DEG C (battery thermal runaway peak temperature).

The application belongs to the technical field of inorganic nanometer material preparation, and particularly relates to a hollow manganese dioxide / cobalt manganate loaded nitrogen-doped carbon hybrid material and a preparation method thereof. The steps of the application are as follows: S1, dispersing manganese source material in N,N-dimethylformamide to form a uniform solution; S2, adding an organic ligand to the solution obtained in step S1 and continuously stirring to obtain a mixed solution, and then transferring the mixed solution to a reaction kettle for a solvothermal reaction; S3, sequentially washing and drying the product obtained through the solvothermal reaction, and then grinding the product and a cobalt salt to form a mixture powder; and S4, performing a high-temperature pyrolysis reaction on the mixture powder, and obtaining the hollow manganese dioxide / cobalt manganate loaded nitrogen-doped carbon hybrid material rich in mesopores and macropores after the reaction stops. The application has a large specific surface area and a multi-pore structure, slows down the migration and aggregation of metal particles and the loss of pyrolysis intermediates in the heat treatment process, and improves the electrochemical activity and stability of the transition metal / nitrogen-doped carbon electrocatalyst.

The invention discloses a preparation method of a medium-entropy MAX phase based on zirconium component regulation and control, which comprises the following steps: 1) material preparation: titanium, vanadium, zirconium, niobium, aluminum and graphite powder are used as raw materials, and the molar ratio of the zirconium element phase in transition metal elements is 8-25%; and 2) sintering: uniformly mixing all the raw materials, and carrying out sintering reaction under the condition of argon Ar protective atmosphere to obtain the medium-entropy MAX phases with different configurations. The controllable preparation of the quaternary medium-entropy MAX phase with brand new element combination is realized by accurately regulating and controlling the molar ratio of the zirconium element in the (Ti, V, Zr, Nb) n + 1AlCn system, and the phase purity is obviously improved; and the medium-entropy MXene material is further prepared by taking the medium-entropy MAX phase as a precursor. The prepared medium-entropy MAX phase has a compact layered structure, and the derived medium-entropy MXene presents an ultrathin and stable two-dimensional lamellar morphology, so that the medium-entropy MXene shows abundant electrochemical active sites and excellent conductivity, and shows good application prospects in many fields.

Photocatalytic sterilization technology is a technology that uses active substances generated by specific materials under light conditions to kill bacteria, viruses and other microorganisms. This technology mainly relies on the performance of photocatalytic materials, especially semiconductor materials such as titanium dioxide (TiO2). When the photocatalyst is irradiated by light of a specific wavelength, the electrons in the material transition from the valence band to the conduction band, forming electron-hole pairs. These electrons and holes have high chemical activity and can react with water or oxygen to generate free radicals with strong oxidizing ability, which can destroy the cell wall or cell membrane of microorganisms, causing the leakage of intracellular substances, thereby achieving the effect of sterilization. The present application aims to solve the problems of low light utilization rate and insufficient active sites of TiO2 photocatalytic materials, and proposes a TiO2@Ag / Ti-MOF functional material. The TiO2@Ag / Ti-MOF functional material is based on the Ti-MOF skeleton to construct Ag-MOF, realizing the controlled slow release of Ag ions and having a long-term effective sterilization effect.

The present application relates to a kind of synergistic repair sizing polyimide fiber sizing agent and its preparation method and application, the raw material of the polyimide fiber sizing agent is composed of solute A and solvent B, the solute A is multifunctional epoxy resin, the solvent B is low-boiling solvent, the low-boiling solvent is acetone or ethanol, the proportion of the solute A and the solvent B is as follows: A 0.1%~10%;B 90%~99.9% by weight percentage.The polyimide fiber sizing agent of the present application can be used to repair the internal structure defect of high-performance polyimide fiber and improve the chemical activity of fiber surface, can improve the roughness of fiber surface in a short time, ensure the surface chemical reactivity, repair the internal defect of fiber by the formation of internal crosslinking point, the tensile strength and compression strength of fiber are improved, and waste liquid is easy to recover, low in cost.

The present invention provides a composite microsphere for enhancing the efficacy of an agrochemically active ingredient, characterized in that the composite microsphere comprises chitosan having an average molecular weight in the range of 190,000 to 310,000 g / mol; and a crosslinking agent, in the absence of the agrochemically active ingredient. The present invention also provides an agrochemical formulation comprising the composite microsphere.

The disclosure relates to a composition, having a liquid continuous phase, a first agrochemical active ingredient in the liquid continuous phase, a capsule containing a second agrochemical active ingredient, the capsule dispersed within the liquid continuous phase and configured to create a physical barrier between the first agrochemical active ingredient and the second agrochemical active ingredient, and a buffer configured to maintain a pH below 9, and where the solubility of the first agrochemical active ingredient in the second agrochemical active ingredient is between 1% and 10% w / w at room temperature. The disclosure further provides methods of making and using such compositions.

The present application relates to copper alloy preparation technical field, specifically to a kind of high-performance copper alloy for electronic material and preparation method thereof.The present application includes the following steps: preparation processing copper alloy material, preparation etching liquid, preparation biological base hydrophobic coating liquid and preparation high-performance copper alloy for electronic material.Cu-Al-Fe-Si alloy system is used to prepare processing copper alloy material in the present application, which not only prepares the substrate of copper alloy, but also makes the processing copper alloy material prepared in the subsequent etching by the synergistic design of material composition and organizational structure, so that the etching liquid can uniformly react on the surface of the processing copper alloy material, avoiding uneven etching caused by composition segregation, thereby improving the uniformity of coating when adhering.The surface of the copper alloy material obtained after etching finally has optimized physical roughness and chemical activity, so that the biological base coating can be firmly adhered to the surface of the copper alloy material after etching, thereby obtaining high-performance superhydrophobic coating.

The invention relates to a graphene-coated molybdenum dioxide nanorod composite material as well as a preparation method and application thereof. The composite material is of a core-shell structure and takes a molybdenum dioxide nanorod as a core and a graphene layer as a shell; the graphene layer is formed by high-temperature carbonization of polyaniline, and the thickness of the graphene layer is 10-80 nm. The preparation method comprises the following steps: dissolving a molybdenum source in a nitric acid aqueous solution for hydrothermal reaction to prepare a molybdenum trioxide nanorod precursor; dispersing the molybdenum trioxide nanorod precursor in an acidic solution, sequentially adding aniline and ammonium persulfate under a stirring condition, and reacting to obtain a polyaniline / molybdenum trioxide composite precursor; and drying the composite precursor, and carrying out high-temperature calcination to obtain the graphene-coated molybdenum dioxide nanorod composite material. Compared with the prior art, the composite material has the high conductivity of graphene and the chemical activity of molybdenum dioxide, and shows excellent removal efficiency and cycling stability on lead ions in the capacitive deionization process.

The invention discloses a nitrogen-doped porous carbon material for a supercapacitor and a preparation method and application thereof, and belongs to the technical field of supercapacitors, and the method comprises the following steps: mixing and grinding a carbon source, a nitrogen source and an activator, carrying out a one-step carbonization reaction in an inert atmosphere, washing to be neutral, and drying to obtain the nitrogen-doped porous carbon material for the supercapacitor. The activating agent and the nitrogen source act synchronously, a decomposition product of the activating agent etches a carbon skeleton to form pores during carbonization, a decomposition product of the nitrogen source is accurately doped to a carbon defect site, and it is guaranteed that high specific surface area and efficient doping are achieved synergistically. The activating agent is mild in decomposition activity, the etching rate is matched with the carbon source carbonization rate, a hierarchical pore structure is formed, and electrolyte transmission and charge storage are facilitated; the nitrogen doping is mainly based on high-activity pyridine nitrogen and pyrrole nitrogen, a pseudocapacitor is introduced, and the electrochemical activity is high. The activating agent is stable and non-corrosive at normal temperature, decomposition products are easy to wash and remove, energy consumption and pollution are low, raw material reaction efficiency is high, excessive addition is not needed, cost is low, and large-scale application is easy.

The utility model relates to the technical field of surface passivation equipment, and particularly discloses anti-corrosion surface passivation equipment which comprises a passivation pool, an installation block is installed at one end of a vertical plate, an installation groove is formed in one end of the installation block, a frame is installed in the installation groove in a matched mode, a filter screen is installed in the frame, a liquid inlet is formed in one end of a filter box, and a liquid outlet is formed in the other end of the filter box. The other end of the filter box is provided with a liquid outlet, the end, away from the through hole, of the liquid discharge pipe is cooperatively installed in the liquid inlet, one end of the liquid outlet is provided with a draw-off pump, the water inlet end of the draw-off pump is provided with a liquid outlet pipe, the other end of the liquid outlet pipe is cooperatively installed in the liquid outlet, and the water outlet end of the draw-off pump is provided with a return pipe; and the other end of the return pipe extends into the passivation pool. Through the arrangement of the filtering structure, passivation liquid in the passivation pool can be filtered, and the situation that after the passivation liquid is used for a long time, the passivation liquid contains a large number of impurities, the chemical activity of the passivation liquid is reduced, and the passivation reaction efficiency is affected is avoided.

Systems and methods are disclosed for monitoring a status of a composition containing an agrochemical active ingredient in real time.

The invention relates to the technical field of fire extinguishing control, in particular to a perfluorohexanone and hot aerosol composite synergistic fire extinguishing method and system.The method comprises the steps that in the initial response stage of a fire, fire scene multi-dimensional data in a protection area are collected in real time; wherein the fire scene multi-dimensional data comprises flame optical radiation multi-dimensional spectrum data, heat flow field vector distribution data, oxygen concentration attenuation gradient data and environment pressure pulsation data; based on the transition intensity of a free radical characteristic peak in a flame optical radiation multi-dimensional spectrum, the turbulence characteristic of vector distribution of a heat flow field is combined. According to the method, the boundary of the Stefan flow rejection effect and the Arrhenius thermal quenching effect is quantified by calculating the confrontation loss value and the synergistic interaction compensation window, and the specific interval of which the transmission gain is greater than the confrontation loss is searched on the time axis, so that the cooling capacity of the perfluorohexanone is utilized, and the transmission gain of the perfluorohexanone is improved. The inhibition peak value on the chemical activity of the aerosol is avoided, and the synergistic fire extinguishing of the two medicaments is ensured.

The present invention relates to binders for films and seed coating compositions. The binder is an alkyd resin selected from the group consisting of alkyd resins formed from C2 to C16 diacids, C6 to C30 fatty acids, and C3 to C8 polyols. The film or seed coating composition may also include an agrochemical active, a nutrient, or a biostimulant. Also provided is a method of forming a film coating composition by combining the alkyd resin in an aqueous medium optionally with an agrochemical active, a nutrient, or a biostimulant; a method of coating seed, and seed coated with the formulation. A seed or film coating composition comprising an alkyd resin provides desirable binder properties and is water dispersible while still maintaining good shedding and wear resistance, and has bio-based and biodegradable properties. The seed coating additionally does not inhibit or hinder the release of agrochemical active substances, nutrients, or biostimulants.

The invention relates to the technical field of adsorbent preparation, and discloses a preparation method of an efficient separation adsorbent for indium and germanium in a zinc solution, which comprises the following steps: in a porous inorganic mineral substrate, dipping a mixed solution containing an organic functional agent, a monomer, a cross-linking agent, a pore-foaming agent and an organic solvent under ultrasonic treatment; the in-situ polymerization reaction and the polymerization-induced phase separation process are carried out concurrently through cooperative regulation and control of multiple chemical and physical processes, physical embedding of the functional agent on the mineral substrate is achieved to solve the loss problem, and meanwhile the in-situ polymerization reaction and the polymerization-induced phase separation process are carried out at the same time. And an internal microporous structure of a polymer network is synchronously constructed, and the chemical activity of the functional agent is guaranteed, so that the adsorbent has high stability and high-speed mass transfer kinetics.

The invention discloses a macrostructure inspection method of a high-activity and high-purity rare earth metal gadolinium target material, and belongs to the technical field of physical testing. The method comprises the steps of processing a macroscopic sample, preparing a macroscopic corrosive agent, carrying out macroscopic corrosion and inspecting a macrostructure. Firstly, the surface of a gadolinium target macroscopic sample is machined; then performing low-power corrosion on the gadolinium target material sample; and finally, observing the macroscopic tissue of the sample by visual observation or a magnifying lens and collecting a macroscopic tissue image. The method has the advantages of no over-corrosion or non-uniform corrosion phenomenon, obvious grain boundary and clear structure, and is convenient for carrying out macroscopic structure uniformity observation and analyzing and identifying defects such as inclusion, looseness and air holes. The problems that due to intrinsic characteristics of high purity, active chemical properties and the like of the gadolinium target, during conventional low-power corrosion, corrosion pits, blackening and darkening of the surface, serious oxidation and other illusions are extremely prone to occurring are solved, and high-quality development of rare earth gadolinium target products used in the key strategic fields of integrated circuits, OLED display and the like is promoted.

The application relates to an activation method of a high-loading manganese dioxide electrode material, in particular to in-situ growth of a high-loading manganese dioxide electrode material with a loading of greater than or equal to 15 mg cm ‑2 on a flexible carbon cloth surface, taking the high-loading manganese dioxide electrode material as a working electrode, taking a metal Pt sheet as a counter electrode, adopting a two-electrode system, activating the high-loading manganese dioxide in a zinc nitrate solution through cyclic voltammetry scanning, and the activated high-loading manganese dioxide exhibits excellent electrochemical properties. The application adopts an electric activation method to improve the electrochemical activity of the high-loading manganese dioxide, has the advantages of simple process, convenient operation and the like, and the activated high-loading manganese dioxide electrode material can be used for electrochemical energy storage.