232results about How to "Inhibit migration" patented technology

The invention relates to the technical field of soil improvement and ecological restoration, and discloses a liquorice planting method based on synergistic utilization of coal-based solid waste and desertified land, which comprises the following steps: crushing alkaline coal-based solid waste and acidic coal-based solid waste, mixing according to a mass ratio of 2: 8-4: 6, adding a modified humic acid-based heavy metal passivator and water, and uniformly mixing to obtain a mixture; uniformly mixing and aging to obtain a coal-based solid waste mixture; spreading the mixture on the surface layer of the desertification land, performing rotary tillage and deep tillage to mix the mixture with the sandy soil, and adjusting the pH value to be stable at 7.5-8.5; the treated liquorice seeds are sown, main roots are harvested in autumn of the third year, deep root systems and lateral root bud points are reserved, and overground straw is smashed and returned to the field; soil nutrition indexes are monitored regularly, other commercial crops are planted when the soil nutrition indexes reach a set threshold value, and if not, regeneration planting of the liquorice is maintained. Through synergistic compounding of acid-base solid waste and chelating of the passivating agent, substrate pH self-regulation and heavy metal resistance control are achieved, and the physicochemical property of sandy soil is improved.

The invention discloses an optical film, a preparation method thereof and a display device, and relates to the technical field of optical functional films. The optical film comprises a base film layer and an antistatic coating arranged on the surface of at least one side of the base film layer. The antistatic coating comprises the following raw material components: water-dispersible polyester resin, water-soluble resin, a cross-linking agent and an antistatic agent; the antistatic agent is obtained by compounding a single-walled carbon nanotube modified with a hydrophilic group and polyaniline acid, the antistatic agent comprises an inner core and a coating layer at least partially coating the inner core, the inner core comprises the single-walled carbon nanotube modified with the hydrophilic group, and the coating layer comprises the polyaniline acid. According to the optical film, the single-walled carbon nanotubes and the polyaniline acid form a composite conductive structure, and then the composite conductive structure is crosslinked with the water-soluble resin and the crosslinking agent to form a three-dimensional conductive network structure, so that the optical film obtains lasting and efficient antistatic performance with extremely low environmental humidity dependence on the premise of keeping high light transmittance, low haze and good coating adhesiveness.

The application provides a porous carbon nanofiber electrocatalyst loaded with cobalt / lanthanum hydroxide heterojunction and a preparation method. The preparation method comprises the following steps: adding 4,4-diamino diphenyl ether and pyromellitic dianhydride into a solvent, uniformly mixing, and preparing a polyamide acid precursor spinning solution; electrospinning the prepared polyamide acid precursor spinning solution to prepare polyamide acid nanofibers; immersing the prepared polyamide acid nanofibers in a mixed metal salt solution containing cobalt salt, lanthanum salt and zinc salt to prepare polyamide acid nanofiber precursors loaded with metal ions; and performing programmed temperature heat treatment on the prepared polyamide acid nanofiber precursors loaded with metal ions in a protective atmosphere to prepare the porous carbon nanofiber electrocatalyst loaded with cobalt / lanthanum hydroxide heterojunction. The prepared porous carbon nanofiber electrocatalyst loaded with cobalt / lanthanum hydroxide heterojunction has excellent electrochemical oxygen reduction reaction and oxygen evolution reaction bifunctional catalytic activity.

The application discloses a wet oxidation catalyst, which comprises the following raw materials in percentage by weight: 0.1-2% noble metal, 1-10% graphene-based material, and the rest is a carrier, wherein the carrier is modified titanium dioxide, specifically, a rare earth-transition metal-oxygen vacancy-mesoporous three-dimensional gradient titanium dioxide carrier. The application aims at solving the technical problem of poor stability of the catalyst.

The application relates to the development and technical field of electrocatalysts, and discloses a preparation method and application of a proton sponge modified fluorine atom doped metal copper electrode material, which comprises the following steps: adding a dispersion solution of a proton sponge into a dispersion solution of a hydroxyl copper fluoride precursor to obtain a mixed solution; uniformly spraying the mixed solution on a polytetrafluoroethylene film substrate loaded with copper nanoparticles to obtain a proton sponge modified hydroxyl copper fluoride precursor electrode material; and then electrochemically reducing the proton sponge modified hydroxyl copper fluoride precursor electrode material to obtain the proton sponge modified fluorine atom doped metal copper electrode material. The application further discloses the proton sponge modified fluorine atom doped metal copper electrode material obtained by the above preparation method and application of the proton sponge modified fluorine atom doped metal copper electrode material to an electro-reduction carbon dioxide reaction as a working electrode. The electrode material provided by the application exhibits excellent electro-reduction CO2 performance in an acidic environment, and realizes the preparation of high-value C 2+ products with high selectivity under an industrial-grade current density.

The application discloses a mural reinforcing protective agent and a preparation method and application thereof, belongs to the technical field of cultural relic restoration, and can solve the technical problems that existing mural reinforcing materials cannot reinforce the lower layer structure of ancient murals and are prone to being attached to the surface of murals to cause the whitening of the surface pigments. The mural reinforcing protective agent comprises a bacterial cellulose carrier and Ba(OH)2 nanoparticles loaded on the bacterial cellulose carrier in situ. The application plays a reinforcing role on the lower layer structure of murals, realizes deep reinforcement of ancient murals, improves the protection effect, stability and durability, and the surface of the mural will not be whitened.

The application discloses a high-temperature-resistant silica gel composite material and a preparation method thereof, and belongs to the technical field of high polymer materials. In view of the problems that existing silica gel is easy to be thermally degraded and brittle and has poor flame-retardant performance above 300 DEG C, the application uses methyl vinyl silicone rubber as a matrix, introduces specific structure organic flame retardant and epoxy modified nano cerium dioxide. The two are in-situ chemically bonded through epoxy groups and phenolic hydroxyl groups to construct a synergistic protection network, which significantly improves the dispersibility of the filler and prevents high-temperature migration. The material has excellent mechanical property retention rate at 350 DEG C extreme high temperature, and the flame-retardant grade reaches UL-94 V-0 level. By forming a dense Ce-P-O-C ceramicized carbon layer, oxygen and heat are effectively isolated, the technical problems that the silica gel is easy to crack and easy to burn in an extreme heat environment are solved, and the material is suitable for the fields of aerospace and electronic packaging.

This invention discloses a dual-mode synergistic composite photocatalyst, its preparation method, and its application in styrene-acrylic emulsion coating compositions, belonging to the field of architectural coating technology. The dual-mode synergistic composite photocatalyst possesses a TiO2@dense SiO2@mesoporous SiO2-MnO2-GQDs three-layer core-shell structure. The styrene-acrylic emulsion coating provided by this invention utilizes the aforementioned dual-mode synergistic composite photocatalyst, and innovatively employs a yellowing-resistant composition composed of hollow titanium dioxide-supported phenyltriazole particles, a sulfonic acid-grafted hindered amine light stabilizer, and nano-zinc oxide. This composition synergistically inhibits yellowing of the paint film through enhanced UV absorption and improved interfacial compatibility. The styrene-acrylic emulsion coating provided by this invention successfully solves the two major problems of traditional photocatalytic coatings: "purification depends on light" and "self-catalysis leads to yellowing of the paint film." It can efficiently degrade formaldehyde under both light and dark conditions and exhibits excellent yellowing resistance.

The invention belongs to the technical field of sheath-core composite fibers, and particularly relates to a preparation method of an efficient temperature-adjusting sheath-core composite fiber, and the preparation method comprises the steps of preparation of an aluminum organic ligand, preparation of a sheath layer melt and melt spinning. According to the invention, dicyclohexylmethane diisocyanate and monoethanolamine are subjected to an addition reaction to generate urea bonds which are coordinated with Al < 3 + > to obtain an aluminum organic ligand, Al2O3 which is uniformly distributed is generated in situ in a PA matrix in the melt blending process of the aluminum organic ligand and the PA matrix, the heat conductivity of a skin layer is improved, and the heat conductivity of the skin layer is improved under the combined action with a phase change material in a core layer; the synergistic effect of rapid heat conduction and phase change temperature adjustment is achieved, and efficient temperature adjustment and rapid heat conduction and heat dissipation are completed. The high-efficiency temperature-adjusting sheath-core type composite fiber prepared by the invention can be applied to the fields of home textiles, clothing and the like, and has a better application prospect in mattresses due to good temperature sensing capability.

The invention relates to the technical field of building energy conservation, heat preservation and heat insulation materials, and discloses a flame-retardant phase-change heat preservation and heat insulation building material and a preparation method thereof.The preparation method of the flame-retardant phase-change heat preservation and heat insulation building material comprises the following steps that paraffin is loaded in ZnO / CuO hollow microspheres to obtain phase-change microspheres; modifying the phase change microspheres with polydopamine and acryloyl chloride to obtain functionalized phase change microspheres; the preparation method comprises the following steps: carrying out graft polymerization on a phosphorus-containing eugenol compound and 1-amino-5-hexene-2-alcohol on the functionalized phase change microspheres to obtain multifunctional phase change microspheres; polyether polyol, functionalized polyol, myricetin, multifunctional phase-change microspheres and the like are used as raw materials, foaming is performed, and the flame-retardant phase-change heat-preservation and heat-insulation building material is obtained. The flame-retardant phase-change heat-preservation and heat-insulation building material is excellent in heat-preservation and heat-insulation performance, flame-retardant performance and mechanical performance, has anti-ultraviolet performance and antibacterial and mildew-proof performance, can reduce erosion damage caused by external conditions, and prolongs the service life.

This invention provides anthracene methylphenthiazide for use in photosensitive resin compositions, relating to the field of photopolymerization. The invention also includes photosensitive resin compositions containing the anthracene methylphenthiazide, photosensitive dry films containing the anthracene methylphenthiazide, and their applications. The anthracene methylphenthiazide of this invention is photosensitizing and can be used as a photosensitizer in photosensitive resin compositions. It also enhances the adhesion of photosensitive resin compositions to various metal surfaces and exhibits low migration characteristics; it can be widely used in photocuring fields such as dry films, paints, coatings, inks, and molding materials.

This invention relates to the field of petrochemical catalytic desulfurization technology, specifically disclosing a high-efficiency desulfurizing agent, its preparation method, and its application in the desulfurization of heavy naphtha. The desulfurizing agent provided by this invention has a "two-level" metal active center. The first level is a cobalt center in biochar, and the second level is a nickel-copper bimetallic center introduced through impregnation on the surface of a composite carrier. The desulfurizing agent provided by this invention has excellent desulfurization effect. Under conditions of 140°C and no hydrogen, it can simultaneously remove inorganic sulfur such as hydrogen sulfide and organic sulfur such as thiols, thioethers, and thiophenes from heavy naphtha obtained by hydrocracking of heavy diesel oil, wax oil, or mixed diesel and wax oil, reducing the total sulfur content from 25-40 μg·g. ‑1 Reduced to 0.2 μg·g ‑1 The following methods can effectively protect bimetallic (multimetallic) reforming catalysts from sulfur poisoning, and the preparation process is green and controllable, making it suitable for large-scale industrial applications.

This invention belongs to the field of industrial UV inkjet printing consumables technology, specifically relating to a UV white inkjet ink, its preparation method, and its application. The UV white inkjet ink contains aliphatic polyurethane acrylate, silane-modified epoxy polyester, reactive diluent monomer, photoinitiator, adhesion promoter, white pigment, and optional additives. The silane-modified epoxy polyester is prepared by the following method: esterification of a diol compound with itaconic acid, followed by a mercapto-olefin click reaction of the resulting unsaturated polyester polyol with mercaptosilane, and then a condensation reaction of the resulting silane-modified polyester polyol with halopropylene oxide to obtain the silane-modified epoxy polyester. The UV white inkjet ink provided by this invention has high adhesion to the substrate and is not easily peeled off after handling friction and outdoor exposure.

The invention relates to the technical field of solid waste resource utilization and soil improvement technologies, and discloses iron-calcium composite modified straw biochar as well as a preparation method and application thereof. A preparation method of iron-calcium composite modified straw biochar comprises the following steps: performing anaerobic pyrolysis on crop straws to obtain original biochar; mixing and dipping the original charcoal with a solution containing an iron source and a calcium source, adjusting the pH value to 9-11, and carrying out a co-precipitation reaction; and roasting the product of the coprecipitation reaction at 60-120 DEG C to obtain the iron-calcium composite modified straw biochar. According to the method, nano-scale synergistic loading of iron and calcium is achieved through an anaerobic pyrolysis-iron-calcium impregnation-coprecipitation-low-temperature roasting coupling technology, the obtained material has the high specific surface area, rich functional groups and a stable structure, soluble phosphate in soil and runoff can be efficiently adsorbed and fixed, the phosphorus fixation speed is high, and the phosphorus fixation is stable for a long time; the migration of phosphorus to a water body can be effectively restrained from the source.

The application provides a clay anti-swelling agent composition and a preparation method and application thereof, and the clay anti-swelling agent composition comprises, in mass fraction, 5-20 wt% of polyether amine, 15-30 wt% of an organic ammonium salt, 8-16 wt% of a low-molecular-weight cationic polymer, 10-20 wt% of a polyvinylamine and 5-10 wt% of an organic acid, and the rest is water; the clay anti-swelling agent composition has the advantages of good anti-swelling effect, long-acting effect, prevention of clay particle migration, good temperature resistance, non-increase of formation water salinity, increase of formation permeability and the like, the anti-swelling rate is greater than or equal to 90%, the anti-swelling rate is greater than or equal to 92% after aging at 350 DEG C, the water washing resistance rate is 100%, the core permeability recovery rate is greater than or equal to 75%, and the core permeability retention rate is greater than or equal to 85%.

The invention discloses an electric control box, and the box comprises a box body which is provided with a mounting groove; the control panel is mounted in the mounting groove, and the control panel comprises a main board body and a power device connected to the main board body; the radiator is in heat-conducting connection with the power device; and the insect-proof cover covers one side, back on to the radiator, of the power device, and an insect-proof space for accommodating the power device is defined between the insect-proof cover and the radiator. Through local sealing protection of the power device, comprehensive sealing of the whole electric control box is not needed, infestation of insects to core components is accurately blocked, and protection redundancy caused by integral sealing is avoided. In terms of heat dissipation efficiency, heat transfer loss is reduced through direct heat conduction connection of the radiator and the power device, meanwhile, heat exchange between the radiator and the outside is not affected by the layout of the insect-proof cover, and the heat dissipation effect is guaranteed; on the aspect of structural optimization, the overall sealing structure is simplified through the local protection design, the size of the electric control box is reduced, and the assembly complexity and the production cost are reduced.

This invention relates to the field of polymer material additives, and discloses an environmentally friendly calcium-zinc composite PVC heat stabilizer and its preparation method. The heat stabilizer is a multi-level core-shell structure particle composed of three parts: (a) a functionalized hydrotalcite core intercalated with β-diketone and polyol; (b) a calcium / zinc metal soap inner shell chemically bonded to the core surface via a silane coupling agent; and (c) a lanthanum-organic complex outer shell coating the outermost layer containing unsaturated double bonds. The preparation method includes: preparing the functionalized core, grafting a silane coupling agent, in-situ co-precipitation to generate the inner shell, and solvent evaporation to coat the outer shell. This invention ensures the integrity of the composite particle structure and the synergistic effect of each component by constructing a stable chemical connection between the core and shell. Through intercalation and final chemical grafting, the migration and precipitation problems of the additives are fundamentally solved.

The present application relates to the field of drilling engineering, and particularly relates to a kind of automatic spraying device and operating method of drill pipe thread grease, including self-locking screw lifting platform, rotating platform assembly, support assembly, telescopic rod assembly, spraying head and thread grease conveying pipe;Spraying head includes outer thread spraying assembly, push-pull cylinder A, piston rod A, push-pull cylinder B, piston rod B, inner thread spraying assembly and shell;The self-locking screw lifting platform realizes the lifting of spraying head;The rotating platform assembly realizes the rotation of spraying head;The telescopic rod assembly realizes the centring of spraying head;The spraying head is sprayed with thread grease to drill pipe joint.The beneficial effects of the present application are: automatic spraying thread grease is realized, intelligent drill pipe conductor ring is prevented from being contaminated, operation efficiency is improved and different specifications of drill pipe joint can be adapted.

The application relates to the technical field of optoelectronic manufacturing, and particularly discloses a flip LED chip and a preparation method thereof. The flip LED chip comprises a substrate, an epitaxial layer, an insulating protective layer, a reflection layer, a first insulating layer, a P-type metal conductive layer, an N-type metal conductive layer, a second insulating layer, a P-type pad layer and an N-type pad layer which are stacked on the substrate; the reflection layer is arranged above the P-type semiconductor layer; the reflection layer comprises an electromigration-resistant part, a reflection part and a protective part; the electromigration-resistant part and the reflection part are arranged adjacently, the electromigration-resistant part is arranged close to the N-type conductive step, and the protective part covers the electromigration-resistant part and the reflection part; the electromigration-resistant part comprises an electromigration-resistant main part and a first oxidation-resistant part which are stacked in sequence; each group of metal pairs comprises an Ag metal layer and an AgNi alloy layer which are stacked in sequence; and the first oxidation-resistant part is made of one or more of Ni, Au, Ti and Cr. By implementing the application, the reliability can be improved.

This invention discloses a low surface energy active-passive synergistic antifouling coating and its preparation method, belonging to the field of marine antifouling materials technology. The preparation method of the antifouling coating includes the following steps: S1, mixing acetone and xylene and stirring under a nitrogen atmosphere to form a mixed solvent; S2, adding vinyl-terminated silicone resin and acrylic resin to the mixed solvent, stirring and heating to obtain a coating base liquid; S3, adding an initiator to the coating base liquid and continuously stirring and heating to react; S4, after the reaction is complete and the coating base liquid cools, adding functional fillers to form a coating liquid; S5, coating the coating liquid and drying to obtain a low surface energy active-passive synergistic antifouling coating. The low surface energy active-passive synergistic antifouling coating prepared by this invention solves the problem in existing marine antifouling technologies where the single antifouling mechanism prevents the simultaneous consideration of environmental friendliness and long-term effectiveness, and has broad application prospects in the field of marine antifouling materials technology.

The application belongs to the technical field of biological medicine, and provides application of combined use of tocopherol and mulberroside C in preparation of a drug for treating liver cancer, which is combined use of tocopherol and mulberroside C in preparation of a drug for treating liver cancer. Through in-vitro cell experiments, the growth inhibition effect of tocopherol and mulberroside C on liver cancer cells is evaluated; the results show that tocopherol and mulberroside C can inhibit the growth activity of liver cancer cells to achieve the purpose of treating liver cancer.

The application belongs to the field of biomedical materials and biomedical engineering technology, and discloses a natural hydrogel nanoparticle with mecobalamin sustained release and a preparation method and application thereof. The preparation method is as follows: calcium carbonate nanoparticles are dispersed in water, loaded with mecobalamin to obtain drug-loaded nanoparticles; boric acid is modified on silk fibroin to obtain boric acid-modified silk fibroin; purified peach gum is reacted with sodium periodate under light-proof conditions to obtain aldehyde-modified peach gum; the drug-loaded nanoparticle suspension is mixed with the aldehyde-modified peach gum, and then the boric acid-modified silk fibroin is added to obtain the natural hydrogel nanoparticle with mecobalamin sustained release. The hydrogel has excellent biocompatibility, drug sustained release, self-repair and other functions, and can be applied to nerve injury repair.

The invention discloses a tumor detection marker and application thereof in medicine preparation, and belongs to the technical field of biomedicine. Clinical sample qRT-PCR (quantitative real-time polymerase chain reaction) shows that ENST00000412203.1 is obviously up-regulated in breast cancer tissues, the area (AUC) under the ROC curve reaches 0.9822, and the diagnosis efficiency is excellent. In addition, the invention further finds that the expression of the polypeptide in lymph node metastasis tissues is obviously improved, and metastasis specificity is displayed. Meanwhile, the expression of ENST00000412203.1 is knocked down through siRNA, it is found that proliferation, migration and invasion of breast cancer cells are remarkably inhibited, and therefore the siRNA can be used for preparing targeted therapy drugs for breast cancer and has important clinical application value.

This invention discloses a dual-ionic-liquid synergistic interface passivation device and method for perovskite thin films in the field of photovoltaic device technology. The device includes a transport unit, several sets of carrier-collecting units disposed on the transport unit, and a lower interface passivation unit and an upper interface passivation unit sequentially arranged along the transport path of the transport unit. A substrate is placed on the carrier-collecting units. In the lower interface passivation unit, a mixer is used to mix a functionalized ionic liquid with a precursor solution and then spray it onto the substrate to form a bottom-passivated perovskite thin film. Subsequently, a passivating ionic liquid is sprayed into the upper interface passivation unit. This not only achieves synergistic passivation treatment of the upper and lower interfaces of the perovskite thin film, effectively suppressing ion migration and improving the long-term stability of the perovskite thin film and the photovoltaic devices fabricated from it, but also utilizes continuous transport, online spraying, and automated scraping and drying, improving overall work efficiency and making it suitable for continuous production of perovskite solar cells.

The invention discloses a polyimide dielectric film containing carboxyl betaine and a preparation method thereof. The carboxyl betaine-containing polyimide dielectric film is prepared from carboxyl betaine-containing polyimide, and the carboxyl betaine-containing polyimide is prepared by the following steps: firstly, taking a precursor of carboxyl betaine, m-phenylenediamine and bisphenol a type diether dianhydride as monomers, and carrying out condensation polymerization to obtain polyamide acid; carrying out complete imidization on the polyamide acid under the action of a catalyst isoquinoline to obtain polyimide containing a precursor; and reacting the polyimide containing the precursor with sodium bromoacetate to obtain polyimide containing carboxyl betaine. The zwitterions are introduced into the polyimide structure to improve the dielectric and energy storage performance of the polyimide dielectric film, and meanwhile, the preparation method has the advantages of being low in cost, simple in process, controllable and adjustable in performance, suitable for large-scale application and the like.

The application discloses a zinc battery negative electrode material, a preparation method thereof and a zinc ion battery. The zinc battery negative electrode material is a composite of a carbon base material and zinc nanoparticles; the carbon base material is a porous carbon material with through nano or sub-micron channels, the zinc nanoparticles are distributed in the channels of the carbon base material, the surface of the zinc nanoparticles is wrapped by a carbon network, and the carbon network anchors the zinc nanoparticles in the channels of the carbon base material. A pulse mode is adopted to alternately introduce zinc sources and carbon sources, and interval purging is performed after each introduction; in view of the unique physical and chemical characteristics of zinc, a synergistic process of "functional group guidance-pulse deposition-immediate anchoring" is designed, so that the deposition of zinc nanoparticles and the growth of the carbon network are alternately performed. The zinc battery negative electrode material can not only inhibit the growth of zinc particles in a long-term electrochemical cycle process, improve the utilization rate of zinc, but also reduce the direct contact area of zinc and electrolyte, and is helpful to inhibit the occurrence of side reactions such as hydrogen evolution.

The application discloses an environment-friendly flame-retardant master batch for crosslinked polyethylene and a preparation method thereof, and belongs to the technical field of high polymer flame-retardant materials. The flame-retardant master batch is prepared from LLDPE resin as a base material, an aluminum diethyl phosphinate, melamine polyphosphate and modified magnesium hydroxide to form a phosphorus-nitrogen-inorganic ternary synergistic flame-retardant system, the addition of sepiolite which is resistant to high temperature and flame-retardant, the modification of an interface by using a PE-g-MAH compatilizer, and the addition of compounded antioxidants, lubricants and anti-dripping agents, high-speed mixing, three-screw mixing, single-screw extrusion, surface grinding and cutting, magnetic selection and vacuum packaging. The flame-retardant master batch can make the crosslinked polyethylene material reach UL94V-0 grade with 10% of the addition amount, and has the characteristics of low smoke, environmental protection, low release, high mechanical property retention rate and the like, and is suitable for the field of electric wires and cables.

The application relates to a DOPO-based derivative monomer, a preparation method and application thereof, and belongs to the technical field of organic synthesis. The application takes p-methoxycarbonyl benzaldehyde and methyl p-bromobenzoate as raw materials, and prepares and synthesizes DOPO-bis (4-carboxyl phenyl) through an ester group protection-halogenation activation-DOPO nucleophilic bond formation-ester hydrolysis reaction. The application solves the defects that the existing DOPO-based copolymer monomer structure has low polymerization activity, single function, and the modified polyester is difficult to consider heat resistance, flame retardance and aging resistance by means of DOPO skeleton modification and monomer structure design, improves the structural uniqueness of the monomer and the industrialization feasibility of the preparation process, and does not need special raw materials or equipment adaptation. The method has the advantages of high monomer preparation yield and excellent copolymerization reaction efficiency, realizes the synergistic improvement of heat resistance, flame retardance and aging resistance, and expands the application range of polyester injection products.

The invention belongs to the technical field of electrochemical oxygen reduction, and relates to a preparation method and application of a high-dispersion mesoporous carbon sphere loaded nano platinum-cobalt intermetallic compound electrocatalytic oxygen reduction material, a high-dispersion mesoporous carbon sphere precursor is firstly prepared, then the high-dispersion mesoporous carbon sphere precursor is subjected to high-temperature carbonization treatment to obtain high-dispersion mesoporous carbon spheres, and the high-dispersion mesoporous carbon spheres are subjected to high-temperature carbonization treatment to obtain the high-dispersion mesoporous carbon sphere loaded nano platinum-cobalt intermetallic compound electrocatalytic oxygen reduction material. Then, mesoporous carbon spheres loaded with platinum-cobalt intermetallic compound precursors are prepared on the basis of the obtained high-dispersion mesoporous carbon spheres, finally, the mesoporous carbon spheres are subjected to high-temperature heat treatment, and finally the high-dispersion mesoporous carbon sphere loaded nano platinum-cobalt intermetallic compound electro-catalytic oxygen reduction material is prepared. According to the invention, the high specific surface area and regular pore structure of the mesoporous carbon spheres are utilized to realize high dispersion and confinement of the platinum-cobalt precursor, and intermetallic compound nanoparticles with uniform size and uniform distribution are formed through heat treatment. The obtained material has high precious metal utilization rate and excellent stability, the synthesis method is simple, operation is easy and convenient, repeatability is high, and large-scale production is easy to achieve.