48results about How to "Improve conversion ability" patented technology

Frog farming method and frog cage are provided. The method comprises: I, putting young frogs in the frog cage in spring; II, putting lure attracting mosquitoes into the frog cage into the frog cage in summer and autumn, thereafter the frogs feed on the mosquitoes; III, avoiding snakes entering the frog cage in the place where the snakes inhabit; IV, covering the frog cage with plastic film in winter, mounting an electric lamp in the frog cage, increasing the temperature of air in the frog cage to keep the frogs not hibernating and promote the frogs to grow; V, adding artificial lure if necessary. The frog cage includes a fixed frog cage and a vehicle-mounted frog cage, both including inner tiers, wherein a water basin, a terrace and a stairway communicating the upper and lower tiers are arranged on each tier, and the frog cage is covered with a mesh enclosure. The frog framing method and frog cage have the advantages that the frogs are farmed in multi-tier cages, lures are used outdoors to attract insects, pests are eliminated for crops, natural ecology is balanced, and food sources are also provided for human; cage framing of frogs is very low in cost; frogs farmed have high reproductive rate, high disease resistance and high feed conversion capacity.

The invention discloses an advertisement budget distribution method and system based on machine learning and user behaviors, and the method comprises the following steps: collecting the historical behavior data of a user, and extracting the feature data of the historical behavior data through feature engineering; constructing a user probability prediction model, and training the model by using the feature data; in an advertisement putting process, collecting real-time behavior data of a user, inputting the real-time behavior data into the trained model, and predicting an advertisement clicking probability of the user and an advertisement commodity purchasing probability of the user; a fusion model is constructed, the fusion model calculates the conversion rate of the user according to the advertisement clicking probability of the user and the advertisement commodity purchasing probability of the user, and calculates the channel conversion rate according to the putting channel; distributing a preliminary advertisement budget according to the historical data of the putting channel; and dynamically adjusting the preliminary advertisement budget of the putting channel based on the channel conversion rate. According to the invention, precise distribution of the advertisement budget can be realized, and the overall conversion effect of the advertisement is improved.

The invention provides a hydrogen direct-fired supercritical carbon dioxide energy storage power generation device system and an operation method. The hydrogen direct-fired supercritical carbon dioxide energy storage power generation device system comprises a hydrogen production and storage unit, a carbon dioxide energy storage unit and a hydrogen fuel combustion power generation unit. And the hydrogen production and storage unit and the carbon dioxide energy storage unit are respectively connected with the hydrogen fuel combustion power generation unit. Two energy storage media of liquid carbon dioxide and high-energy-density green hydrogen are used for energy storage, and super-long-time energy storage can be achieved; and heat energy is subjected to cascade coupling application, stored heat and turbine exhaust heat are fully used for a carbon dioxide cyclic heating heat source, the external emission heat loss of the system is reduced, and the system efficiency is high.

The invention relates to a TBC solar cell and a preparation method thereof. The preparation method comprises the following steps: carrying out primary double-sided polishing; forming a first tunneling oxide layer and a boron-doped polycrystalline silicon layer on two sides; performing first laser patterning on the back surface, and removing the borosilicate glass layers in the N region and the isolation region; performing double-sided polishing for the second time to remove the first tunneling oxide layer and the boron-doped polycrystalline silicon layer of the N region and the isolation region; forming a second tunneling oxide layer and a phosphorus-doped polycrystalline silicon layer on two sides; performing secondary laser patterning on the back surface, and removing the phosphorosilicate glass layers in the P region and the isolation region; performing wet etching on the front surface to remove all layers on the front surface, and removing a side surface winding plating layer; performing double-sided texturing, corroding a P region to a boron-doped polycrystalline silicon layer, corroding an N region to a phosphorus-doped polycrystalline silicon layer, corroding an isolation region to a silicon wafer, and forming a textured surface on the isolation region on the back surface of the silicon wafer and the front surface of the silicon wafer; depositing a passivation layer and an antireflection layer on two sides; and preparing a positive electrode in the back P region and preparing a negative electrode in the N region. The preparation method is simple in process and convenient to operate, and the conversion efficiency of the battery can be improved.

The invention discloses a video processing method and device, an advertisement putting method and device, equipment, a medium and a product, and the video processing method comprises the steps: obtaining a to-be-processed video stream, and obtaining key event information in the to-be-processed video stream, the key event information comprises event information of a key event occurring in a target frame in the to-be-processed video stream; on the basis of the key event information, a supplemental enhancement information frame is inserted in a position adjacent to the target frame in the video stream to be processed, a target video stream is obtained, the supplemental enhancement information frame comprises the key event information, and the supplemental enhancement information frame is used for playing the target video stream in the playing process of the target video stream. And when the supplementary enhancement information frame is played, triggering the advertisement putting content matched with the key event. According to the embodiment of the invention, the advertisement putting effect can be improved.

The utility model relates to the technical field of formaldehyde removal, and discloses a photocatalyst-based multi-stage formaldehyde removal device which comprises a treatment box, a filter window is arranged on one side of the treatment box, a filter screen is mounted in the treatment box, two sliding columns are fixedly connected to the upper portions of the two sides of the filter screen, springs are mounted on the outer walls of the sliding columns, and the outer walls of the sliding columns are fixedly connected with the filter screen. One ends of the springs are fixedly connected to the upper portions of the two sides of the filter screen, and mounting blocks are mounted on the upper portions of the two sides of the filter screen. According to the utility model, the pushing block is pushed to enable the mounting block to slide on the sliding column, the spring is compressed, and the two fixing blocks are driven to be close to each other, so that the fixing blocks can be separated from the first mounting groove, and the fixing blocks can be reset to enter the first mounting groove under the action of the spring when the pushing block is loosened; therefore, the filter screen can be quickly disassembled and assembled, the filter screen can be conveniently cleaned, and the working efficiency and the performance stability of device operation are effectively improved.

The invention discloses a universal game pop-up window configuration method, system and device and a medium, and the method specifically comprises the steps: setting a unified pop-up window protocol, and determining a data format, a calling mode and an interaction process accessed by each end according to the pop-up window protocol; a mapping relation between the game service scenes and popup window configuration parameters is established, popup window content management is carried out according to the mapping relation, and the popup window configuration parameters comprise popup window style parameters and content editing rules; forming a pop-up window trigger rule set according to the pop-up window trigger condition of each game service scene, the target crowd and the arrival opportunity, and judging whether a window needs to be popped up and the priority of pop-up window information to be popped up in real time through a rule matching algorithm based on the pop-up window trigger rule set; and dynamically controlling the pop-up window triggering frequency of each user by mining the association between the user behavior mode and the pop-up window effect influence factor. According to the method, the universality, the flexibility and the individuation of the game popup window are realized.

The utility model relates to the technical field of photovoltaic supports, and provides a follow-up photovoltaic support with a turning structure, which comprises a mounting underframe, a fixed column is fixedly connected to the middle position of the top end of the mounting underframe, and the output end of a servo motor extends to the outside of the fixed column and is fixedly connected with a turntable through a coupling. A photovoltaic support body is rotationally connected to the fixing base, a solar tracking sensor is fixedly connected to one side of the top end of the mounting block, a pneumatic telescopic rod is hinged to one side of the top end of the rotating disc, and through the arrangement of the rotating supporting rod, the rotating disc, the pneumatic telescopic rod, the fixing base, the solar tracking sensor and a servo motor, the solar tracking sensor can track the solar energy. The solar tracking sensor is used for conveniently detecting the illumination intensity of the sun, the photovoltaic support body is inclined in cooperation with the work of the pneumatic telescopic rod, the photovoltaic support body is rotated in cooperation with the servo motor, then it can be guaranteed that the photovoltaic panel installed on the photovoltaic support body can be perpendicular to the sunlight all the time, and the conversion and utilization efficiency of the sunlight is improved.

The invention provides an organic selenium-rich microbial inoculum as well as a preparation method and application thereof, and relates to the technical field of microbial inoculum. The organic selenium-rich microbial inoculum comprises selenium-substituted amino acid; based on 100 parts by mass of organic selenium, the content of the seleno-amino acid in the organic selenium-rich microbial inoculum is not less than 5%. The invention further provides a preparation method and application of the organic selenium-rich microbial inoculum. The organic selenium-rich microbial inoculum provided by the invention overcomes the defect that the conversion rate is low when inorganic selenium is converted into organic selenium by microorganisms in the prior art.

The invention discloses an oxygen-vacancy-rich cobalt oxide / ferroferric oxide composite catalyst and a preparation method and application thereof, and the preparation method comprises the following steps: mixing Co3O4 nanoparticles with polyol, adding ferric salt, dissolving, adding a chelating agent for a coordination reaction, adding a pH regulator for a solvothermal reaction, filtering, washing, and drying to obtain the oxygen-vacancy-rich cobalt oxide / ferroferric oxide composite catalyst. The oxygen vacancy-enriched cobalt oxide / ferroferric oxide composite catalyst is obtained. The composite catalyst disclosed by the invention has the characteristic of being rich in oxygen vacancies, can enhance the adsorption and activation capability on nitrate, can realize efficient electrocatalytic reduction of nitrate, also has very excellent stability, and has important application value in the aspects of nitrate wastewater treatment, ammonia synthesis and the like. According to the invention, the oxygen-vacancy-rich cobalt oxide / ferroferric oxide composite catalyst is prepared into a catalytic electrode, and the catalytic electrode is used as a working electrode for constructing an electro-catalysis device, so that efficient electro-catalysis of nitrate can be realized, and the nitrate can be rapidly reduced into ammonia.

The invention belongs to the technical field of advertisement putting, and particularly relates to an intelligent advertisement putting platform based on data driving, which is characterized in that the basic audience degree, the effective conversion degree and the behavior deviation degree of each advertisement category relative to a specified user at the current login time point are evaluated; the method comprises the following steps: screening each suitable advertisement category of target application software relative to a specified user at present, marking each advertisement contained in the target application software as each suitable advertisement, predicting the attraction degree of each suitable advertisement content to the specified user to screen each optimal advertisement, deeply analyzing each advertisement space of the target application software to effectively convert corresponding advertisement visual elements, and displaying the advertisement visual elements. And in combination with the advertiser budget corresponding to each optimal advertisement, determining the optimal advertisement of the specified user corresponding to each advertisement position of the current target application software so as to carry out advertisement putting work, and evaluating the advertisement putting effect of the specified user of the target application software on the current day, thereby realizing complete, accurate and effective advertisement putting. Therefore, the advertisement putting strategy optimization and the effect improvement are facilitated.

The invention relates to the field of microalgae culture, in particular to a microalgae domestication method and application of domesticated microalgae produced by the method in treatment of sulfur-containing gas. The domestication method of the microalgae comprises the following steps: inoculating the microalgae to a domestication culture medium, introducing sulfur-containing gas, and sequentially carrying out at least two stages of domestication culture to obtain the domesticated microalgae. By adopting the domestication method of the microalgae, provided by the invention, the sulfur resistance and the desulfurization efficiency can be remarkably improved.

The present application relates to sewage treatment technical field, specifically to a kind of acrylonitrile sewage treatment device, comprising: microbial purification tank, exhaust mechanism, the exhaust mechanism has two and symmetrically set in the two sides of the inner wall of microbial purification tank width direction, the exhaust mechanism includes the cavity plate fixedly connected in the inner wall of microbial purification tank. By cavity plate, partition block and air separation assembly in exhaust mechanism, air can be injected and extracted into microbial purification tank, so as to provide corresponding purification environment for aerobic microorganism or anaerobic microorganism to purify sewage, and then realize that when injecting air, air exposure area and immersion area can inject air into microbial purification tank simultaneously to provide sufficient oxygen for aerobic microorganism to purify sewage, help its efficient decomposition of pollutants in sewage, while when extracting air, air separation assembly disconnects the communication of air exposure area and immersion area, so that suction airflow is only discharged from air exposure area, avoid sewage from flowing out with cavity plate, while avoiding suction airflow from immersion area to interfere with anaerobic environment in tank.

The present invention relates to the technical field of molecular sieves, and in particular to a method for preparing a modified molecular sieve, a modified molecular sieve obtained by the preparation method and its application. The preparation method comprises: (1) exchanging metal ions on a Na-type molecular sieve to obtain a metal ion slurry; (2) adding a first precipitant so that part of the metal ions in the metal ion exchange slurry undergo a first precipitation to obtain a first precipitation slurry; (3) the first precipitation slurry is filtered, subjected to a first ammonium sulfate exchange, a first water wash, and a first roasting in sequence to obtain a cross-baked molecular sieve dry powder; (4) adding a second precipitant so that part of the metal ions in the cross-baked molecular sieve dry powder undergo a second precipitation, and then a second ammonium sulfate exchange, a second water wash, and an optional second roasting are performed in sequence to obtain a modified molecular sieve. The modified molecular sieve obtained by the method has a lower sulfate content and also improves the crystallinity and stability of the modified molecular sieve.

The invention relates to a method for synergistically enhancing bank slope vegetation water quality purification through arbuscular mycorrhiza and nitrifying bacteria, and belongs to the technical field of water environment ecological management and ecological engineering. The method comprises the following three core steps: preparation of an arbuscular mycorrhiza-nitrifying bacteria immobilized complex microbial inoculant, construction of a bank slope vegetation rhizosphere microhabitat, and cooperative regulation and control of system stabilization and purification functions. According to the method, the rhizosphere microhabitat of the bank slope vegetation is actively intervened by artificially inoculating the fungicide formed by the arbuscular mycorrhiza and the nitrifying bacterium community, and the symbiotic system formed by the arbuscular mycorrhiza-nitrifying bacterium composite community and the plants is utilized, so that the method is environment-friendly, high in cost benefit, simple and stable in operation condition, easy to engineer and suitable for large-scale popularization and application. And an innovative solution is provided for realizing synergistic interaction of bank slope ecological restoration and water quality purification.

The invention relates to a genotype-dependence-free dendrobium nobile genetic transformation method and application, and belongs to the technical field of genetic engineering. Comprising the following steps: taking embryonic calluses, protocorms or protocorm-like bodies of dendrobium nobile as explants; introducing the binary vector carrying the target gene into agrobacterium to prepare an infection solution, and infecting the explant; after co-culture, transferring to a culture medium containing a screening agent to obtain a resistant explant; and carrying out differentiation and rooting culture to obtain a transgenic plant. By systematically optimizing a plant growth regulator combination, an agrobacterium strain type, an infection mode and an auxiliary screening mode, an efficient and stable genetic transformation system which does not depend on a specific genotype and takes multiple types of explants as receptors is established for the first time, and the problems that a traditional method is high in genotype dependency and limited in tissue type are solved; the method shows good applicability and repeatability in a plurality of dendrobium hybrids, and provides a general technical platform for gene function research and molecular breeding.

The present application provides a video encoding and decoding method, device and system, and a storage medium. The method comprises: performing inter prediction on a current block to obtain a prediction block of the current block; determining, according to the prediction block, a transform kernel corresponding to the current block; and performing inverse transform on a target transform coefficient according to the transform kernel, and obtaining a residual block of the current block according to a transform result of the inverse transform. That is, according to the present application, the selection of the transform kernel is determined or guided or assisted by a feature of the prediction block on the basis of the correlation between a residual texture and a texture of the prediction block itself, thereby improving the compression efficiency of the current block while reducing the transmission of selection information of the transform kernel in a code stream and reducing the overhead of the transform in the code stream.

The invention relates to the technical field of plastic resource utilization, and discloses a method for preparing gasoline from plastic. The method comprises the following steps: in an inert atmosphere, polyolefin plastic is subjected to a catalytic cracking reaction under the action of a first catalyst and a second catalyst, the first catalyst contains an active component and an optional carrier, the active component is at least one of a tungsten component, a zirconium component, an aluminum component and a niobium component, and the carrier is a mesoporous molecular sieve; the second catalyst is a microporous silicon-aluminum molecular sieve; the mass ratio of the usage amount of the first catalyst to the usage amount of the second catalyst is 1: (0.25-20). The catalyst used in the technical scheme can stably exist in air, is cheap and easy to synthesize, does not need the participation of co-reactants such as hydrogen, a solvent or olefin, and remarkably enhances the polyethylene plastic conversion rate and the gasoline yield at the same time.

The present invention discloses a real-time bidding sorting method, system, storage medium and electronic device for improving the conversion effect of digital mall advertisements. The method includes judging whether it is a page turning request. If it is not a page turning request, entering the advertisement sorting process; the advertisement sorting process includes: obtaining basic traffic information; filtering related products according to search keywords and filtering conditions in the basic traffic information, generating an initial advertisement queue; further filtering the advertisement queue according to the directional conditions; calculating the basic bid of the advertisements in the queue; pushing the advertisement queue into the real-time reasoning service, and calculating the click-through rate and / or conversion rate of the advertisement in real time through the model; reading the traffic distribution coefficient, calculating the chance of the advertisements in the queue, forming the final sorting, and outputting the advertisement queue; outputting the advertisement with the first ranking and popping it out from the queue. The present invention scientifically and orderly organizes algorithms and big data technologies, refines the data resources of the digital mall, and can improve the conversion and drainage effect of the advertisement resources in the station.

The invention relates to the technical field of plastic resource utilization, and discloses a method for preparing branched paraffin from polyolefin plastic. The method comprises the following steps: in an inert atmosphere, polyolefin plastic is subjected to a catalytic cracking reaction under the action of a catalyst, and the catalyst contains a mesoporous carrier and acid radical ions loaded on the mesoporous carrier. The solid superacid catalyst adopted by the method can stably exist in the air, is cheap and easy to synthesize, does not need the participation of co-reactants such as hydrogen and a solvent, has an adjustable structure and a suitable acid site, not only catalyzes the degradation of polyethylene under a low-temperature condition, but also greatly improves the selectivity of branched paraffin in a gasoline product.

This invention discloses a high-temperature denitrification catalyst for use in waste incinerators and its preparation process, relating to the field of catalyst technology. The catalyst uses anatase titanium dioxide as a support, vanadium pentoxide and tungsten oxide as active ingredients, and nickel powder is added to form a mixture that impregnates the support before calcination. This invention adds a large amount of nickel powder to the original catalyst for mixing, so that the high-temperature conditions provided by the catalyst in the waste incinerator drive the reaction of nickel and oxides with water vapor, reducing the presence of water in the catalyst environment, thereby improving the reaction of SO2 and NH3, increasing the conversion rate of NO, and improving the catalyst's conversion performance.

The application relates to an advertisement material combination optimization method, which comprises the following steps: obtaining display constraint information corresponding to multiple advertisement positions based on advertisement task information; performing feature analysis processing on each advertisement material unit to generate corresponding material feature parameters; performing cross-advertisement position combination generation processing on the advertisement material unit to generate multiple advertisement material combinations; determining combination level evaluation parameters of each advertisement material combination respectively; comparing and sorting the multiple advertisement material combinations to screen out an advertisement material combination with the optimal evaluation result as a target material combination; and performing configuration output on the multiple advertisement positions and executing advertisement delivery. The advertisement delivery process is changed from the traditional single-point material optimization to the combination optimization process of multiple advertisement position linkage, which can not only ensure that the content expression between different advertisement positions is consistent and coherent, but also can make the material keep good adaptation effect under different display environments, and significantly improve the overall quality and conversion effect of advertisement delivery.

The present application relates to the technical field of commodity information management, and in particular to a kind of commodity introduction copy content intelligent generation method and system.The method comprises: obtaining the attribute information of target commodity and its competitive product commodity in each dimension;According to the difference of attribute information of competitive product commodity in the same dimension, the sales situation of competitive product commodity and the overall difference of attribute information of target commodity and competitive product commodity, the basic important factor of each dimension attribute is obtained;According to the difference of attribute information of target commodity and competitive product commodity in the same dimension, the same grade commodity of target commodity in each dimension is screened;According to the number of competitive product commodity belonging to the same grade commodity in each dimension, the proportion of the number of same grade commodity in each dimension and the basic important factor, the emphasis description factor of each dimension is determined, and then the introduction copy of target commodity is generated.The present application improves the personalization, user attraction and conversion effect of the generated commodity introduction copy.

This application relates to the field of NdFeB waste recycling, specifically to an environmentally friendly recycling method for NdFeB waste magnets. The method includes the following steps: crushing and separation, combined reaction, roasting, purification, and precipitation. The combined reaction involves adding sulfuric acid solution to the magnetic material for an initial reaction, followed by adding ammonium persulfate for a further reaction, resulting in a mixture. Purification involves adjusting the pH of the aqueous extract to 3-3.7, waiting for complete precipitation, and then filtering to obtain a filtrate. Precipitation involves adding the filtrate to a sodium carbonate solution for reaction and filtration to obtain rare earth precipitates. This application utilizes the combination of sulfuric acid and ammonium persulfate to convert rare earth elements and iron elements in the magnetic material into rare earth sulfate and iron sulfate as much as possible. Roasting further enhances the conversion effect, and then, under pH 3-3.7 conditions, the Fe in the aqueous extract... 3+ It is converted into ferric hydroxide precipitate as much as possible, and finally rare earth ions are precipitated using sodium carbonate solution for recovery.

The application discloses a task planning method and device, electronic equipment, medium and product. The method comprises the following steps: obtaining an interactive sentence input by a target user; performing intent recognition on the interactive sentence to obtain an intent candidate list; generating a structured intent object according to the intent candidate list and multi-round dialogue data of the target user; loading a corresponding business domain task graph according to the structured intent object; and performing task planning according to the business domain task graph to obtain a task execution sequence. The method can combine real-time interactive intent of a user with multi-round dialogue history to form a structured intent expression, and complete adaptive task planning based on a matched business domain task graph, thereby automatically generating a task execution sequence that meets current requirements without relying on a static preset process, and effectively improving dynamic adaptation capability and execution rationality of task planning.

The invention relates to the field of oil refining catalysts, in particular to a high-activity catalytic cracking catalyst, a preparation method thereof and a method for reducing coke yield in catalytic cracking reaction. The catalytic cracking catalyst is prepared from the following components in percentage by weight: 5 to 40 percent of molecular sieve, 5 to 40 percent of clay, 5 to 35 percent of silicon species in terms of SiO2, 30 to 75 percent of aluminum species in terms of Al2O3, 0.5 to 5 percent of stable elements in terms of oxide and 0.5 to 10 percent of active regulating elements in terms of oxide, and is measured by a low-temperature nitrogen adsorption method, the total pore volume of the catalyst is not less than 0.5 mL / g, and the pore volume of pores with the pore diameter of 10-100 nm accounts for 80% or more of the total pore volume; and the micro-reactivity after being treated for 17 hours at 800 DEG C under 100% water vapor is not lower than 50%. The catalyst is high in heavy oil conversion rate, high in light oil selectivity and low in coke yield.

The present disclosure provides a method and system for producing ethylene and propylene, the method comprising: contacting and reacting a heavy raw material with a catalytic cracking catalyst in a catalytic cracking reaction unit; contacting and reacting a light raw material with a dehydrogenation cracking catalyst in a dehydrogenation cracking reaction unit; wherein the dehydrogenation cracking catalyst to be regenerated obtained after the dehydrogenation catalytic cracking reaction is introduced into a catalytic cracking regeneration unit for heat exchange treatment, and after reaching the initial regeneration temperature, enters the dehydrogenation cracking regeneration unit for regeneration reaction to obtain a dehydrogenation cracking regeneration catalyst. The method organically combines the catalytic cracking of the heavy raw material with the dehydrogenation cracking of the light raw material, which can promote the effective conversion of the heavy raw material and the light raw material into ethylene and propylene. In addition, the heat generated during the regeneration of the catalytic cracking catalyst can be further utilized to provide heat for the regeneration process of the dehydrogenation cracking catalyst, thereby greatly reducing energy consumption, and has important industrial application value.

The invention relates to the field of environmental protection and resource utilization, in particular to a method for treating pitaya branch waste by combining hermetia illucens larvae with a complex microbial inoculant and application. By adding the chicken manure, the utilization efficiency of the black soldier flies on pitaya branch wastes is improved, and an optimal pitaya branch and chicken manure compounding ratio is found; several strains of functional bacteria are screened from the transformation substrate and are verified to be capable of promoting the transformation of the black soldier flies on the mixture of the pitaya branches and the chicken manure; three strains with different functional advantages are further selected to prepare the complex microbial inoculant, so that the conversion efficiency of the hermetia illucens can be obviously improved, and a new method is provided for the treatment of pitaya branches by a hermetia illucens conversion technology.

The present application discloses a building sunscreen and heat-insulating coating and a preparation method thereof, which relate to the technical field of building coatings, and include a building sunscreen and heat-insulating coating A and a building sunscreen and heat-insulating coating B. The building sunscreen and heat-insulating coating A and the building sunscreen and heat-insulating coating B are mixed and then applied, and the mass ratio of the building sunscreen and heat-insulating coating A and the building sunscreen and heat-insulating coating B is 1-2:4, or the building sunscreen and heat-insulating coating B is applied first, and then the building sunscreen and heat-insulating coating A is applied after drying, and the application thickness ratio of the building sunscreen and heat-insulating coating B and the building sunscreen and heat-insulating coating A is 4:1; the present application has the following effects: the building sunscreen and heat-insulating coating B is applied first, and the modified silica aerogel B contains more boric acid microparticles, thereby enhancing the adhesion to the substrate and the durability of the coating, and then the building sunscreen and heat-insulating coating A is applied, and the modified silica aerogel A contained therein contains less boric acid microparticles, thereby providing more sun protection and durability.

This invention discloses a sulfur-containing cathode material and its preparation method, belonging to the field of lithium-sulfur battery technology. The method uses a quaternary ammonium polymer containing nitrate as a cathode binder, dispersed with a conductive agent and a sulfur-containing cathode material in deionized water to obtain a cathode slurry. The slurry is then coated onto aluminum foil and vacuum dried to obtain a cathode sheet. The quaternary ammonium cation backbone in the binder can adsorb polysulfides, improving lithium-ion migration capacity, while simultaneously preventing the rapid and uncontrollable consumption of nitrate, thereby extending the lifespan of the lithium-sulfur battery.