30results about How to "Avoid excessive oxidation" patented technology

The invention discloses preparation of a layered mesoporous Pd-Cu nano-catalyst and a method for preparing glycollic acid from PET hydrolysate through electro-oxidation under environmental conditions, and belongs to the technical field of catalysts. The preparation method comprises the following steps: dissolving CTAB (Cetyltrimethyl Ammonium Bromide) serving as a surfactant in a cosolvent of water and TMB (Tetramethylbenzidine), sequentially adding NH4PdCl4 and Cu (NO3) 2.3 H2O serving as metal precursors into a reaction solution, and finally synthesizing the layered mesoporous Pd-Cu by virtue of a reduction effect of sodium borohydride and an in-situ nucleation and adhesion method. Continuous electro-catalysis is carried out in a pulse mode, selective desorption of GA is dynamically accelerated, and new active sites of a metal catalyst are exposed. The electric pulse catalysis can promote the desorption of the product, prevent poisoning, and further improve the stability and selectivity of the catalyst. The method shows excellent glycollic acid Faraday efficiency, high generation rate and excellent cycle stability under a wide potential window, 20 times of electro-catalysis PET upgrading cycles are achieved, and upgrading utilization of PET waste and efficient generation of glycollic acid are achieved.

The invention discloses walnut shell graded porous activated charcoal and a preparation method and application thereof.The preparation method comprises the following steps that firstly, walnut shells serve as a carbon precursor, pre-carbonization is conducted through a high-temperature tube furnace under the nitrogen atmosphere through an oxygen-limited cracking method, the walnut shells are taken out and ground, the walnut shells are evenly mixed with KOH solid and then placed in the tube furnace, and the carbon precursor is obtained; carrying out high-temperature pyrolysis to obtain a pyrolysis product, washing the pyrolysis product until the pyrolysis product is neutral, and drying to obtain the walnut shell graded porous activated charcoal with rich pore structures. Then, weighing the walnut shell graded porous activated charcoal, acetylene black and PTFE (Polytetrafluoroethylene) according to a set mass ratio; firstly, PTFE is dissolved in alcohol for standby application, then walnut shell graded porous activated charcoal powder and acetylene black are placed in an agate mortar to be fully ground and mixed, then a PTFE alcohol mixed solution is dropwise added, and the mixture is fully ground and mixed uniformly to obtain the electrode material. The chemical performance of the electrode material can be improved, so that the performance of the supercapacitor is improved, and the cost of the supercapacitor is reduced.

The invention belongs to the technical field of welding, and particularly relates to a consumable electrode CO2 gas shield flux-cored wire suitable for cryogenic high manganese steel welding, and a flux core accounts for 25-30% of the total weight of the flux-cored wire; the flux core comprises, by weight, 25%-35% of rutile, 30%-34% of electrolytic manganese metal, 1%-5% of potassium sodium titanate, 2%-5% of quartz, 1%-3% of zircon sand, 0-0.5% of manganese ore, 1%-3% of rare earth ferrosilicon alloy, 0.5%-1.5% of rare earth fluoride, 3%-8% of high-carbon ferrochrome, 2%-4% of molybdenum powder, 2%-4% of magnesium-calcium alloy, 3%-7% of aluminum-zirconium alloy, 9%-12% of nickel-magnesium alloy, 0.5%-1.5% of rare earth silicon-calcium alloy and the balance flux. 1-1.5% of bismuth oxide, 0.5-1.5% of graphite and the balance of iron powder. The invention provides the consumable electrode CO2 gas shield flux-cored wire which is good in process and mechanical property, simple in production process and suitable for cryogenic high manganese steel welding.

The invention provides Low-E coated glass and a preparation method thereof, and relates to the technical field of coated glass. The magnetron sputtering process is adopted for film coating, when the transparent conductive oxide located on the lower layer relative to the silver layer is sputtered, the oxygen flux of sputtering gas is improved, free oxygen is preset in the transparent conductive oxide layer, the top graphite film protection layer is arranged, the hydrophobicity and corrosion potential of the film layer are improved, and the abrasion resistance is improved. Heat treatment is carried out after film coating, so that preset free oxygen is diffused to a silver layer, a silver oxide micro-oxidation layer is formed, uniform distribution of the silver layer is promoted, the roughness of an Ag layer is reduced, and conductivity and transmittance are synchronously improved; the graphite layer is oxidized and removed, and stains and slight scratches on the surface of the graphite layer are eliminated together. Under the influence of heat treatment, the dielectric layers are regularly arranged, so that the compactness and surface hardness of the film are improved.

The invention discloses a carbon nanomaterial pretreatment device and a process thereof, and belongs to the technical field of carbon nanomaterial modification and application, the device comprises a pretreatment main body, a roller way conveying mechanism, a sagger and a collecting and releasing dust-free purification area, the roller way conveying mechanism penetrates through the purification area and the pretreatment main body, the pretreatment body is provided with a low-temperature area, a medium-temperature area, a high-temperature area and a cooling area in the material conveying direction, the temperatures of all the temperature areas are independently controlled, an exhaust and detection assembly is arranged, and the roller way conveying speed can be adjusted to control the material retention time. According to the process, carbon nanotubes are fed into a device through dust-free feeding, and the temperatures (300-600 DEG C) of a low-temperature area, a medium-temperature area, a high-temperature area and a cooling area and the protective gas and oxidant atmosphere are accurately regulated and controlled; according to the method, the pretreatment target of'modification but not destruction 'is achieved, the purity, surface activity and dispersity of the carbon nanotubes are synchronously improved, the defect structure is optimized, the specific surface area is increased to 600-1000 m < 2 > / g, and the core performance is remarkably enhanced.

This invention discloses a craft beer flavor enhancement process using oak barrel micro-oxygen aging, belonging to the field of craft beer brewing technology. This process achieves the targeted transformation and accumulation of flavor compounds in craft beer through oak barrel pretreatment, precise control of the micro-oxygen environment, and optimization of aging process parameters. First, the oak barrel undergoes a combined pretreatment of toasting, carbonization, and maceration. Then, the fermented base beer is poured into the pretreated oak barrel, and a stable oxygen concentration is maintained within the barrel through a micro-oxygen control system, aging under suitable temperature conditions. Craft beer brewed using this process exhibits a significantly increased content of characteristic flavor compounds and an effective reduction in the content of off-flavor substances such as acetaldehyde. The beer combines the rich aroma of oak with the refreshing taste of beer, solving the problems of single flavor and prominent off-flavors in traditional aging processes, and significantly improving the quality and market competitiveness of craft beer.

The invention relates to a post-treatment method for a mercury-based II-VI group nanocrystal with a protective layer formed by chemical oxidation, and solves the problems of poor stability and photoelectric property degradation of the mercury-based II-VI group nanocrystal caused by surface oxidation, ligand desorption and environmental sensitivity. An oxide protection layer with the thickness of 1-3 nm is formed on the surface of the nanocrystal, the long-term stability and the photoelectric property of the nanocrystal are improved, and the method comprises the specific steps of centrifugal purification of the nanocrystal, preparation of an oxidizing agent solution, controllable oxidation reaction, functional ligand surface modification and purification treatment. The oxidation layer is ensured to be compact and stable by accurately adjusting the concentration of the oxidant, the reaction temperature and the reaction time. According to the method, oxygen and moisture permeation is effectively blocked, surface defects are reduced, the quantum yield and the photoelectric property are improved, and the method is widely applied to the fields of post-treatment of mercury-based II-VI group nanocrystals and photoelectric devices.

The invention discloses nanometer graphene oxide and a preparation method thereof. The transverse size of the nanometer graphene oxide is 10-100 nm, and the thickness of the nanometer graphene oxide is 1-2.5 nm. The surface chemical structure meets the following conditions: a C1s peak is analyzed on the basis of X-ray photoelectron spectroscopy, the sum of the atomic percent content of hydroxyl and epoxy groups is not higher than 15%, and the atomic percent content of carboxyl is not lower than 6%. According to the structural design, the structural defect caused by excessive oxidation or reduction in a traditional method is avoided, and the chemical stability and the functionalization potential of the material are improved.

The invention relates to the technical field of amorphous preparation technologies, in particular to a preparation method of an amorphous MoO2-x (at) C composite material, which comprises the following steps: S1, dissolving phosphomolybdic acid in ethanol; dissolving 2-methylimidazole in another part of ethanol, standing the mixed solution, and collecting an obtained Mo-MI precursor through centrifugal operation; s2, dispersing the Mo-MI precursor nanospheres into deionized water, and stirring the Mo-MI precursor nanospheres and the deionized water; dropwise adding a pyrrole (Py) solution, and continuously stirring under an ice-water bath condition; then, through centrifugal treatment, a Mo-MI coated PPy (Mo-MI coated with polypyrrole) precursor is obtained; and S3, placing the dried Mo-MI-coated PPy precursor in a nitrogen environment, and carrying out pyrolysis treatment at 450 DEG C for 2 hours to obtain the amorphous MoO2-x-coated C composite material. The MoO2 prepared by the method disclosed by the invention has the characteristics of an amorphous structure and a core-shell structure, the electronic conductivity of the MoO2 is remarkably enhanced due to the characteristic of the amorphous state, and the migration mode of Li < + > is optimized, so that the rate performance of the material is greatly improved.

The invention discloses a preparation method and application of a post-modified metal organic framework material for catalytically oxidizing benzyl alcohol into benzaldehyde, and belongs to the technical field of photocatalytic materials. Zr-based MOF-808 is used as a parent framework, organic dye eosin Y (eosin Y, EY) is used as a functional unit, and the parent framework and the functional unit are coordinated and anchored to obtain the post-modified metal organic framework material EY-MOF-808. The post-modified metal organic framework material EY (at) MOF-808 has abundant unsaturated coordination sites, provides a way for distinguishing the combining capacity of objects with different groups and improving reactivity and selectivity, and effectively avoids excessive oxidation of benzaldehyde. The EY-coated MOF-808 is suitable for catalyzing benzyl alcohol with a plurality of substituent groups, and corresponding benzaldehyde is obtained at the selectivity of more than 99%. In addition, the EY-coated MOF-808 can be recycled for four times, the selectivity is not reduced, and toxic dyes are prevented from being released into the environment.

The invention discloses a preparation method of an Al-RE intermediate alloy based on an alloy opposite doping method, which comprises the following steps: firstly, industrial pure aluminum Al and mother alloy Al-90RE are taken as raw materials, the raw materials are dried according to a mass ratio meeting the requirement of Al-(10-50) RE, then, the raw materials are melted by adopting a two-stage variable-temperature melting method to obtain an Al-RE melt, then, the Al-(10-50) RE melt is refined, and meanwhile, the Al-RE intermediate alloy is prepared by adopting an alloy opposite doping method. The steel ingot mold is preheated, and finally, the refined Al-RE melt is poured into the preheated steel ingot mold to be cooled, so that an Al-RE intermediate alloy ingot based on the alloy opposite doping method is obtained; rE is one of La, Ce or La + Ce alloy. The obtained Al-RE intermediate alloy is compact in metallographic structure and less in inclusion; in addition, the yield is greater than 90.0%.

This invention discloses a method for repairing and regenerating lithium iron phosphate (LFP) cathode materials, belonging to the field of lithium-ion battery technology. The method involves: firstly, partially oxidizing the LFP cathode material obtained by stripping waste LFP electrode sheets; then, using excess carbon in the LFP cathode material to reduce the oxidized LFP at high temperature, resulting in decarbonized and regenerated LFP cathode material. By controlling the degree of oxidation to partially oxidize the LFP cathode material, and then using excess carbon in the LFP cathode material to reduce the oxidized LFP at high temperature, the decarbonization purpose is achieved, and pure LFP cathode material is obtained. This truly realizes the direct repair and regeneration of LFP cathode materials by decarbonization, ensuring the electrochemical performance of the recycled LFP repaired material.

The application provides a biaxial texture nickel oxide buffer layer and a preparation method and application thereof, and relates to the technical field of coated conductor preparation.The preparation method of the biaxial texture nickel oxide buffer layer provided by the application comprises the following steps: performing recrystallization annealing treatment on a nickel alloy in a reducing atmosphere to obtain a biaxial texture nickel alloy; and performing oxidation treatment on the biaxial texture nickel alloy in an oxidizing atmosphere to obtain the biaxial texture nickel oxide buffer layer.The biaxial texture nickel oxide buffer layer is prepared by using a controllable oxidation recrystallization texture method, the prepared biaxial texture nickel oxide buffer layer has good c-axis orientation, low surface roughness, and good in-plane and out-of-plane growth texture.The preparation process is simple, the operation control is simple, the cost is low, the application is environment-friendly, and the application is suitable for large-scale application.

The invention discloses a process and a device for preparing m-toluic acid and m-phthalic acid through continuous flow selective oxidation of m-xylene, and the process comprises the following steps: pumping m-xylene and a catalyst solution into a first vertical tubular reactor of a single oxidation reaction module, and introducing oxygen or air to carry out single oxidation reaction; after the reaction is finished, high-purity m-toluic acid is obtained through post-treatment, the yield reaches 93% or above, and the product purity reaches 99%; and switching the outlet of the tubular reactor of the mono-oxidation reaction module to the dual-oxidation reaction module, mixing the reaction liquid after the mono-oxidation reaction is finished with a second stream of catalyst solution, feeding the mixture into a second vertical tubular reactor of the dual-oxidation reaction module for dual-oxidation reaction, and after the reaction is finished, carrying out post-treatment to obtain the product isophthalic acid. The yield reaches 95% or above, and the purity reaches 99% or above; the method is high in reaction controllability, short in reaction retention time, stable in product quality, high in production safety, convenient to operate, high in continuous degree and suitable for industrial production.

The invention discloses a resin grinding wheel for processing a sapphire substrate and a preparation method of the resin grinding wheel. The resin grinding wheel comprises a wheel body and a grinding material, the wheel body is provided with a plurality of T-shaped clamping grooves; a part of the grinding material is embedded in the clamping groove; the abrasive material is a metallic bond abrasive material, and the wheel body is formed by processing high-density aluminum alloy or bakelite. The method can effectively reduce the processing stress, reduce the adverse cracking of the subsequent process, improve the strength and hardness of the cutting knife by utilizing the combined action of metals, avoid the precipitation of metal elements by combining with the addition of rare earth elements, and especially improve the wear resistance of the final product by adding carbon fibers during the preparation of the green body. More importantly, oxidation of metal lanthanum is inhibited, sintering parameters are matched, excessive oxidation of the metal lanthanum is prevented, and meanwhile a small amount of lanthanum oxide can provide high strength.

The invention relates to a thin-walled tube outer wall welding inner wall protection device which is characterized in that one end of a spring (2) is connected with a top sealing ball (1), the other end of the spring (2) is connected with a lower sealing ball (4), and the spring can be bent within a certain range; a cavity is formed in the lower sealing ball (4), a plurality of exhaust holes (3) are formed in the side, connected with the spring (2), of the lower sealing ball (4), and protective gas enters gaps (7) between the main pump motor cooling water pipe (6) and the top sealing ball (1) and between the main pump motor cooling water pipe (6) and the lower sealing ball (4) through the exhaust holes (3). According to the device, a good inert gas protection environment is provided for the inner wall of the pipeline in the welding process, and the fillet weld of the cooling water pipe and the main pump motor shell of the shielding type nuclear main pump motor is completed.

The invention belongs to the technical field of silicon nitride preparation, and particularly relates to a method for regulating and controlling the content of nitrogen and oxygen in silicon nitride, a product and application of the product. And carrying out heat treatment on the ball-milled silicon nitride in a nitrogen-oxygen mixed gas atmosphere at the temperature of 800-1500 DEG C, and keeping the temperature for 5-60 minutes, so as to regulate and control the content of nitrogen and oxygen in the silicon nitride. Silicon nitride as a raw material is subjected to ball milling and then is subjected to heat treatment in nitrogen-oxygen mixed gas, so that the nitrogen-oxygen content of silicon nitride can be quickly regulated and controlled, a series of silicon nitride with different nitrogen-oxygen contents can be obtained by changing the heat treatment time and the nitrogen-oxygen mixed gas ratio, the raw material requirement is low, the reaction is quick and simple, and the cost is relatively low.

The invention discloses an oxygen content monitoring and control method of yellow tea heaping yellowing equipment, and relates to the technical field of oxygen content monitoring, experimental data of a yellow tea heaping yellowing process are obtained, and the experimental data comprise environmental experimental data and corresponding equipment oxygen content data; identifying the relationship between the environment experiment data and the equipment oxygen content according to the experiment data of the yellow tea heaping yellowing process; the heaping yellowing fermentation stage of the current yellow tea is judged on the basis of enzyme activity indexes monitored in real time in the heaping yellowing process of the yellow tea, and then the current equipment oxygen content is recognized according to the relation between environmental experiment data and the equipment oxygen content; whether the oxygen content of the current equipment needs to be adjusted or not is judged according to the heaping yellowing fermentation stage of the current yellow tea, and then the oxygen content of the equipment is adjusted according to the relation between environmental experiment data and the oxygen content of the equipment. The oxygen content in the yellow tea fermentation process is accurately controlled, the inconsistency caused by manual intervention is reduced, and the heaping yellowing effect of the yellow tea in different production batches is guaranteed.

This invention relates to the field of aluminum foil production technology, specifically a method for treating aluminum powder on the surface of rolled aluminum foil. This method effectively removes aluminum powder adhering to the aluminum foil surface by combining physical and chemical treatments, improving the purity and safety of the aluminum foil. It is applicable to industries such as electronics, electrical appliances, and food packaging. The treatment effect of aluminum powder can be further optimized by controlling static electricity elimination during the rolling process, selecting the cleaning solution, and using controlled atmosphere heat treatment conditions. Furthermore, the introduction of quality inspection ensures that there is no residual aluminum powder on the surface of the treated aluminum foil, improving product reliability and safety. This invention provides a new solution for quality control in the aluminum foil production process.

The invention discloses a preparation process of an LYSO crystal, and relates to the technical field of scintillation crystal material preparation. The preparation process of the LYSO crystal comprises the following steps: preparing an LYSO precursor by a liquid phase method, growing an LYSO crystal sample by a Bridgman-Stockbarger method, and carrying out heat treatment and segmented annealing treatment on the LYSO crystal sample to obtain the LYSO crystal. The LYSO crystal prepared by the process has few oxygen vacancies, high transparency and strong light output, and the crucible material used in the process steps is a calcium oxide stabilized zirconia crucible, so that the instrument cost is greatly reduced.

This invention relates to a method for enhancing the stirring intensity during vanadium extraction, belonging to the field of steel pretreatment. The method includes the following three steps: first, vanadium-containing molten iron is added to a converter; then, a top-and-bottom blowing process is used for smelting; coolant is added according to the composition and temperature at the smelting endpoint; finally, semi-steel is removed from the lance at the smelting endpoint. The top-blown gas is an oxygen-nitrogen mixture, and the total flow rate of the oxygen-nitrogen mixture is 31,000~35,000 Nm³. 3 / h; the oxygen consumption per ton of iron, the top blowing lance position, and the nitrogen consumption per ton of iron are controlled in segments according to the blowing period; the bottom blowing gas is nitrogen, and the nitrogen supply intensity is controlled in segments according to the blowing period. This invention significantly enhances the stirring intensity of the molten pool without significantly increasing the temperature rise rate through the synergistic effect of the high-flow-rate oxygen-nitrogen mixed gas from the top and the variable-flow-rate nitrogen from the bottom, thereby shortening the mixing time and enhancing the slag-metal reaction, further increasing the vanadium oxidation amount and further reducing the TFe content in the vanadium slag.

The invention provides a method for synthesizing ethylene glycol from ethylene, which comprises the following steps: in the presence of a free radical inhibitor, ethylene, hydrogen peroxide and a titanium silicalite molecular sieve are contacted in a mixed solution of water and an optional organic solvent to carry out oxidation-hydration one-step reaction, and the addition amount of the free radical inhibitor is 0.005-5wt% of the addition amount of the hydrogen peroxide. By introducing the efficient free radical inhibitor and selectively inhibiting a side reaction path, generation of acidic impurities is remarkably reduced, selectivity and product purity of ethylene glycol are improved, and the method is suitable for industrial production.

The invention discloses low-temperature heat conduction oil containing an oxidation inhibitor. The low-temperature heat conduction oil is prepared from the following components in percentage by weight: 95.9 to 96.1 percent of alkane base oil, 1.9 to 2.1 percent of a high-temperature antioxidant, 0.4 to 0.6 percent of an extreme pressure anti-wear agent, 0.4 to 0.6 percent of an anti-corrosion and anti-rust agent, 0.4 to 0.6 percent of a metal deactivator and 0.4 to 0.6 percent of an ash-free circulating oil composite additive, the invention relates to a preparation process of low-temperature heat-conducting oil containing an oxidation inhibitor. The preparation process comprises the following steps: S1, preparing alkane base oil; s2, adding a high-temperature antioxidant; s3, adding other functional additives; s4, performing homogenizing and stabilizing treatment; s5, filtering and impurity removal of the oil product; s6, performance detection; and S7, packaging and storing. The oxidation inhibitor is added into the alkane base oil, so that the oxidation resistance of the heat-conducting oil is improved, the reaction rate of the alkane base oil and oxygen under the high-temperature condition can be effectively reduced, the stability of an oil product is improved, the service life is prolonged, and possible harmful substances are reduced.

This invention belongs to the field of pharmaceutical chemical synthesis technology and relates to a method for the catalytic oxidation of acetate tetraenes to synthesize dihydroxy compounds. The method uses acetate tetraenes as a raw material, acetone as a solvent, Ru-X-Y as a catalyst, and sodium hypochlorite as an oxidant. Under alkaline conditions, catalytic oxidation yields the product dihydroxy compound. In Ru-X-Y, X is Pt or Pd, and Y is any one of Fe, Mn, and Cu. This invention uses solid Ru-X-Y as a catalyst, utilizing the synergistic activation and polarization properties of metals. It only requires sodium hypochlorite, which has relatively weak oxidizing power, as an oxidant to catalytically oxidize acetate tetraenes to the target product dihydroxy compound, effectively avoiding the use of strong oxidants such as potassium permanganate. This not only prevents over-oxidation and improves product yield and quality but also increases production efficiency, resulting in significant economic and social benefits.

The invention discloses a high-entropy perovskite supported catalyst as well as a preparation method and application thereof. The catalyst comprises a perovskite carrier and iridium nanoclusters dispersed on the perovskite carrier, wherein the perovskite carrier is a high-entropy perovskite carrier of which the B site is occupied by five different transition metal elements, and the five different transition metal elements comprise Ir, Ti, Ni, Co and Mo; the mass ratio of the iridium nanocluster to the perovskite carrier is (0.6-1): 1; the catalyst has a rooting structure in which an active component iridium element is simultaneously distributed in a perovskite bulk phase and an iridium nanocluster. The prepared rooting type high-entropy perovskite carrier supported iridium catalyst shows good catalytic activity and catalytic stability in proton exchange membrane water electrolysis equipment, and the problem that iridium active species in a proton exchange membrane water electrolysis anode supported catalyst are prone to agglomeration and falling off under the reaction condition is effectively solved.

The present application relates to the technical field of zinc base powder additive manufacturing, and particularly relates to a zinc base powder additive manufacturing system and a manufacturing method thereof, the following steps: obtaining zinc base alloy powder, performing surface activation treatment through plasma jet; determining cold spraying process parameters based on oxygen content of the activated powder; performing cold spraying-laser composite deposition to form a dense blank on a substrate layer by layer; determining a metallurgical bonding state between the deposition, and triggering selective laser remelting to eliminate interface defects. The present application generates a composite oxide layer on the powder surface through Ar-mixed gas and 8-12kW power plasma jet treatment, can prevent excessive oxidation, and can improve powder activity, thereby laying a good foundation for subsequent spraying deposition.

This invention relates to the field of lithium-ion battery applications and discloses a top-sealing process for a pouch battery. The process includes: placing the top sealing edge of the pouch battery to be packaged between an upper sealing head and a lower sealing head of a top-sealing device; driving the upper sealing head to close with the lower sealing head; hot-pressing the positive tab region of the pouch battery using a first set of packaging parameters; simultaneously hot-pressing the negative tab region of the pouch battery using a second set of packaging parameters; and hot-pressing other regions besides the positive and negative tab regions using a third set of packaging parameters. The first set of packaging parameters includes a first packaging temperature and a first packaging time, and the second set of packaging parameters includes a second packaging temperature and a second packaging time. The first packaging temperature is higher than the second packaging temperature, and the first packaging time is shorter than the second packaging time.

This invention discloses a novel application of CdS-Cdln2S4 in the two-phase oxidation-reduction of toluene and water to prepare benzyl alcohol, benzaldehyde and hydrogen. It can be used for green, efficient and selective oxidation of toluene to prepare benzyl alcohol and benzaldehyde, preventing excessive oxidation of toluene to benzoic acid or carbon dioxide, and can synergistically reduce water to prepare hydrogen. It has the advantages of high selectivity, low energy consumption and low pollution.

The invention provides a lithium battery silicon-based negative electrode binder as well as a preparation method and application thereof, and belongs to the technical field of lithium ion batteries. According to the invention, polyacrylic acid is taken as a matrix, zinc ions and nickel ions are introduced to form a dynamic coordination bond network, and 3, 4-ethylenedioxythiophene (i.e., EDOT) monomers are subjected to in-situ polymerization to generate a poly (3, 4-ethylenedioxythiophene) (i.e., PEDOT) conductive polymer, so that the water-based composite binder with dynamic self-repairing capability and a conductive ion-conductive electron bicontinuous network structure is constructed; the technical problems that a traditional binder is insufficient in binding force in a silicon negative electrode, poor in flexibility, free of conductivity and difficult to adapt to large-volume change of a silicon material are solved. The negative electrode binder can be used in the fields of high-energy-density lithium ion batteries, fast-charging batteries, flexible or miniature electronic equipment and the like, and has great development potential in the fields of high-end power batteries, energy storage systems and the like.

The invention relates to a processing technology of lemon black tea, and belongs to the technical field of tea processing. According to the method, fermentation is promoted by spraying natural plant extracts before tea fermentation, wherein liquorice and honeysuckle are rich in various natural active ingredients, and adverse microorganisms are inhibited, so that the growth and fermentation process of the microorganisms is facilitated; momordica grosvenori has natural sweetness and anti-oxidation characteristics, and increases sweetness and fragrance for the tea leaves. The thyme and the orange peel are rich in essential oil and organic acid, so that the microbial activity is facilitated, and the fermented aroma can be naturally enhanced; the extracts are uniformly sprayed on the tea leaves, so that the enzyme activity of the tea leaves can be effectively improved, the oxidation reaction of polyphenol substances is accelerated, and the color and aroma of tea soup are improved.