66results about How to "Lower contact angle" patented technology

The invention discloses a super-hydrophobic anti-icing coating for a power transmission line and a preparation method, and belongs to the technical field of preparation of anti-icing coatings. The super-hydrophobic anti-icing coating for the power transmission line is composed of a coating wrapping the surface of the power transmission line, and the coating is composed of the following components in parts by weight: 34-45 parts of composite resin, 8-14 parts of a composite ice melting agent, 10-18 parts of deionized water, 1-3 parts of hexadecyl trimethoxy silane and 50-58 parts of tetrahydrofuran, the composite resin is prepared from carboxyl multi-walled carbon nanotubes, isopropanol, tetraethoxysilane, a silane coupling agent KH-550, perfluorodecyl trimethoxysilane, butyl acrylate, methyl methacrylate and dodecafluoroheptyl methacrylate, and the composite ice melting agent is prepared from pyridine-2, 6-dicarboxylic acid, thionyl chloride and nicotinic acid hydrazide. The coating prepared by the method has excellent hydrophobicity, wear resistance and anti-icing effect.

The utility model relates to a battery monomer, a battery and a power utilization device, and belongs to the technical field of batteries. The battery monomer comprises a shell, an electrode terminal and a pressure relief mechanism, the shell is provided with a first wall, the outer surface of the first wall comprises a first area and a second area, and the contact angle between the first area and electrolyte is larger than the contact angle between the second area and the electrolyte; at least one of the electrode terminal and the pressure relief mechanism is disposed in the first region. The first area and the second area with different contact angles are arranged on the first wall, so that the flow characteristics of the electrolyte on the first wall are different, and the electrode terminal and / or the pressure relief mechanism which are / is easy to corrode and difficult to clean are / is arranged in the first area, so that the electrolyte is more difficult to enrich in the first area; the electrolyte on the first wall can be effectively prevented from flowing to the position where the electrode terminal and / or the pressure relief mechanism is located, and important parts on the first area are effectively protected.

The invention relates to the technical field of reverse osmosis membranes, in particular to a polyamide reverse osmosis membrane for high-salinity wastewater treatment and a preparation method of the polyamide reverse osmosis membrane. The invention solves the problem that the polyamide reverse osmosis membrane cannot give consideration to both desalination rate and water flux. The polyamide reverse osmosis membrane comprises a polyester non-woven fabric layer, a polysulfone porous layer, a transition layer and a polyamide layer. The polysulfone porous layer is prepared, and the modified pore-forming agent is added to improve the water flux of the reverse osmosis membrane; the hydrophilicity of the reverse osmosis membrane is improved by preparing the transition layer and adding a hydrophilic auxiliary agent when the polyamide layer is prepared; the flux attenuation rate of the polyamide reverse osmosis membrane is reduced by preparing the polyamide layer; the desalination rate of the reverse osmosis membrane is improved by introducing a composite ion complexing agent and graphene quantum dots into the polyamide layer.

The invention relates to a modified binder for a dry-method electrode, a dry-method electrode pole piece and a preparation method of the dry-method electrode pole piece. Polycyclic aromatic hydrocarbon is dissolved in an aprotic polar solvent, alkali metal is added, and a polycyclic aromatic hydrocarbon alkali metal reagent is generated; and adding polytetrafluoroethylene into the polycyclic aromatic hydrocarbon alkali metal reagent to obtain the modified polytetrafluoroethylene. Alkali metal ions in the polycyclic aromatic hydrocarbon alkali metal reagent can destroy C-F bonds in the PTFE, remove some fluorine atoms on the surface of the PTFE and leave a carbonized layer and some polar groups such as hydroxyl groups, carbonyl groups and unsaturated bonds, and the groups can increase the surface energy, reduce the contact angle and improve the wettability, so that the cohesiveness of the modified PTFE is improved, and the service life of the PTFE is prolonged. The binding force between the PTFE and the conductive agent and the current collector is enhanced, and the problem that the viscoelasticity of the PTFE in the dry-method pole piece is insufficient is solved. Through modification, part of C-F bonds in PTFE are destroyed in advance, so that generation of interface side reaction products is reduced, the problem of initial effect reduction of a dry-method electrode is improved, and the cycle stability of a battery is improved.

The invention relates to the technical field of building materials, and discloses fire-resistant decoration waste exterior wall external thermal insulation mortar and a preparation method thereof. The fire-resistant decoration waste exterior wall external thermal insulation mortar comprises the following raw material components in parts by weight: 60-410 parts of cement; 120 to 550 parts of decoration waste recycled aggregate; 36 to 75 parts of SiO2 aerogel; 8 to 17 parts of a silane coupling agent; 1.3 to 2.1 parts of dispersible latex powder; 0.5 to 1.0 part of methyl cellulose; 7-15 parts of a water reducing agent; 0.2 to 0.4 part of an air entraining agent; and 120 to 180 parts of water. According to the invention, the low-cost and high-strength decoration waste recycled aggregate is used for partially replacing expensive and low-strength aerogel, so that the thermal insulation performance of the mortar is ensured, and the material cost is greatly reduced; the decoration garbage exterior wall external thermal insulation mortar can resist high-intensity fire disasters with the highest temperature of 1000 DEG C and the fire receiving time of 2.5 h, and can be applied to exterior wall external thermal insulation systems of high-rise and super high-rise buildings with high fire extinguishing difficulty.

The pre-filled microneedle injector comprises a needle cylinder, a piston and a needle head, the needle cylinder is of a hollow structure, a limiting ring is arranged at the open end of the needle cylinder, the piston extends into the needle cylinder from one side of the limiting ring and can move up and down in the needle cylinder, a rubber ring is arranged at the bottom end of the piston, and a pushing handle is arranged at the top of the piston; the needle head is fixed to the side, away from the limiting ring, of the needle cylinder and comprises a connecting part and needle tubes, the connecting part extends out of the needle cylinder, and at least one needle tube is embedded into the connecting part in an in-line mode. The syringe is used for injection of biological macromolecular medicine preparations and complex preparations, especially mRNA vaccines or medicine preparations needing to be pre-filled for micro-injection, the hydrophilic film on the inner wall of the needle cylinder enables biological macromolecular medicines such as the mRNA vaccines or the medicine preparations to be stably stored, and the injection efficiency is improved. And through the limiting buckle, the pre-filled microneedle injector cannot leak in the transportation process or the storage process.

The invention discloses a battery fire extinguishing agent and a preparation method and application thereof. Preparation raw materials of the battery fire extinguishing agent comprise water, hydrated salts and auxiliary materials, the auxiliary materials comprise at least one of nano-particles or an organic binder, and the mass fraction of the hydrated salts in the preparation raw materials is 10%-80%. The battery fire extinguishing agent contains high-concentration hydrated salts, can effectively inhibit the occurrence of membrane boiling, and can interact with the nanoparticles and the organic binder to remarkably improve the fire extinguishing capacity and the cooling effect of the fire extinguishing agent.

The invention belongs to the technical field of polymer-based heat-conducting interface materials, and particularly relates to a nano-silver modified carbon fiber coated organic silicon heat-conducting composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: modifying oxidized pitch-based carbon fibers by using a silane coupling agent to obtain silane coupling agent modified carbon fibers, fixing nano-silver on the silane coupling agent modified carbon fibers to obtain nano-silver modified carbon fibers, and filling the nano-silver modified carbon fibers into organic silicon to obtain the nano-silver modified carbon fiber-organic silicon heat-conducting composite material. Under the low filling amount of the heat-conducting filler, the asphalt-based carbon fiber is modified by adopting the silane coupling agent and the nano-silver, so that the dispersity of the asphalt-based carbon fiber in organic silicon is improved, the heat-conducting property of the asphalt-based carbon fiber can be improved by fixing the nano-silver, the interface thermal resistance between the asphalt-based carbon fiber filler is reduced, and the thermal conductivity of the asphalt-based carbon fiber is improved. The heat-conducting property of the nano-silver modified carbon fiber coated organic silicon heat-conducting composite material is greatly improved.

The invention discloses a preparation method of a self-assembled monomolecular layer, which comprises the following steps: firstly, sequentially depositing a NiOx layer and a spongy metal oxide layer on a transparent conductive substrate, and then immersing the transparent conductive substrate in an SAM precursor solution for pulling coating and baking to form the uniform self-assembled monomolecular layer. The self-assembled monomolecular layer has a uniform and compact monomolecular layer structure, can provide more passivation sites for the perovskite layer, has a relatively low surface contact angle, is beneficial to promoting the acquisition of a compact, uniform and void-free perovskite layer, can effectively inhibit a shunting path between FTO and perovskite, passivates defects at a bottom interface of the perovskite, and improves the performance of the perovskite. Non-radiative recombination is reduced, VOC, FF and the like are remarkably improved, and meanwhile the stability performance of a packaged device can be effectively improved. The large-area preparation technology of the compact and uniform SAM molecular layer can be achieved, the related preparation method is simple, the period is short, and a new thought can be provided for efficient preparation of the high-quality SAM molecular layer.

The invention discloses a preparation method of modified fly ash and application of the modified fly ash in concrete, and belongs to the technical field of fly ash resource development.The preparation method comprises the steps that firstly, 3-aminopropyltriethoxysilane is used for conducting surface modification on fly ash, the dispersity and compatibility of the fly ash are improved, and aminated fly ash is prepared; according to the present invention, the aminated fly ash is modified by using the self-made branching auxiliary agent to obtain the modified fly ash, the prepared modified fly ash is applied to the concrete, and the prepared concrete has excellent porosity (the effective porosity is 18.21-18.64%) and excellent water permeability (the water permeation coefficient is 4.14-4.37 mm / s).

The invention discloses a silicon dioxide modified permeable membrane, a preparation method thereof and a water treatment system, and the preparation method comprises the following steps: obtaining a base membrane, preparing a mixed organic solution of which solute is silicon dioxide and bifunctional silane, slowly dropwise adding distilled water into the mixed organic solution, and performing stirring operation to obtain the silicon dioxide modified permeable membrane. A modified polysilsesquioxane polymerized sol is obtained; the modified polysilsesquioxane polymerized sol is prepared to the base membrane through suction filtration, and the silicon dioxide modified permeable membrane is obtained. The preparation method is simple in process, and the prepared silicon dioxide modified permeable membrane is large in flux, capable of treating more water within the same time, stable in structure, resistant to high temperature and chlorine, beneficial to treatment of different conditions, good in adaptability and beneficial to wide application.

The invention relates to the technical field of microcapsules, in particular to a pesticide sustained-release microcapsule as well as a preparation method and application thereof. The shell material of the pesticide sustained-release microcapsule provided by the invention is organic silicon modified polyurethane, and the core material of the pesticide sustained-release microcapsule is an original pesticide; wherein the organic silicon modified polyurethane is obtained by reacting isocyanate, organic silicon dihydric alcohol and degradable dihydric alcohol. The low-polarity and low-surface-energy organic silicon is introduced into the shell material of the pesticide sustained-release microcapsule, so that the contact angle of the microcapsule emulsion is reduced, and the microcapsule emulsion is easier to wet and spread on crops; the degradable dihydric alcohol is introduced, so that the microcapsule is degraded and broken for a long time, the internally wrapped pesticide is fully released, and the release rate and the utilization rate of the pesticide are improved.

The invention discloses modified porous alumina as well as a preparation method and application thereof, and belongs to the technical field of diaphragm materials. The modified porous alumina comprises porous alumina and a modification additive, the modification additive comprises at least one of pyridine, imidazole, indole, quinoline and morpholine; the mass ratio of the porous aluminum oxide to the modification additive is (100: 1)-(100: 40); the particle size of the porous alumina is 0.1 mu m-2 mu m, the pore volume is 0.01 cm < 3 > / g-0. 1 cm < 3 > / g, and the pore diameter is 3 nm-50 nm. The particle size of the porous alumina in the modified porous alumina is small, so that the arrangement of a thin coating of the diaphragm can be realized; the porous aluminum oxide has specific pore volume and pore diameter, so that the liquid retention property and the ionic conductivity of the diaphragm are improved; in addition, the porous aluminum oxide is also loaded with a modification additive, so that the wettability can be improved, HF free in the electrolyte can be effectively captured, and the reliability and safety of the lithium ion battery are improved.

The application relates to the technical field of lithium battery diaphragm, in particular to a high-stability lithium battery diaphragm and a preparation method thereof. The high-stability lithium battery diaphragm is prepared by the following steps: after a polypropylene film is irradiated by ozone and ultraviolet light in sequence, pre-deposition and pre-grafting are carried out on the surface of the polypropylene film, and then ultraviolet radiation treatment is carried out. The application realizes synergistic effect of nano-enhancement and self-repairing, solves the stability problem of traditional PP diaphragms in long-term cycles, and provides a reliable diaphragm solution for high-energy-density lithium batteries.

The invention discloses a low-temperature-resistant negative electrode zinc paste and a low-temperature alkaline zinc-manganese battery containing the zinc paste. The negative electrode zinc paste comprises the following components in parts by weight: 60-65 parts of zinc powder, 1-2 parts of a composite conductive agent, 0.1-0.3 part of a composite corrosion inhibitor and 35-38 parts of a low-temperature electrolyte; the low-temperature electrolyte comprises a multi-element nonionic surfactant system, a multi-element nano anti-freezing agent system and a mixed solution A, the 3.9 ohm discharge capacity of the battery under the condition of-40 DEG C is larger than or equal to 60% compared with the capacity retention rate at normal temperature, the interface impedance amplification is smaller than or equal to 15%, the hydrogen evolution amount is reduced by 80% on year-on-year basis, the process is compatible with an existing production line, and the battery is suitable for polar scientific investigation and electronic equipment in plateau and cold regions.

The utility model discloses a single crystal furnace water-cooled heat shield with a hydrophilic layer heat exchange structure, which adopts a hydrophilic layer, selects proper material, thickness and roughness according to user requirements and product requirements, and selects a proper manufacturing method to manufacture the hydrophilic layer, so as to improve the hydrophilicity of an annular inner shell and improve the heat exchange efficiency of the annular inner shell. The heat exchange efficiency between the annular inner shell and the cooling liquid is improved, so that the heat exchange effect of a product is improved.

The invention discloses a high-heat-resistance and high-infiltration lithium battery diaphragm and a preparation method thereof, the high-heat-resistance and high-infiltration lithium battery diaphragm comprises a base membrane and a coating on the base membrane, the coating is obtained by coating slurry, the slurry comprises flaky wollastonite fibers, a silane coupling agent, an adhesive and a dispersing agent, and the silane coupling agent is vinyltriethoxysilane. The width of the flaky wollastonite fiber is less than 1.5 mu m, the length is 2.0-7.0 mu m, and the thickness is 0.1-0.5 mu m. The high-heat-resistance and high-infiltration lithium battery diaphragm disclosed by the invention has excellent heat resistance and wettability, relatively high breakdown voltage and relatively low water content.

The invention relates to the technical field of pesticides, in particular to a pesticide composition containing refined glufosinate-ammonium and fluoroglycofen-ethyl and a preparation method of the pesticide composition. The pesticide composition containing refined glufosinate-ammonium and fluoroglycofen-ethyl is prepared from the following preparation raw materials in parts by mass: 25 to 30 parts of an active ingredient, 5 to 6 parts of a composite surfactant, 1 to 2 parts of glycerol, 2 to 3 parts of an organic thickening agent, 0.2 to 0.3 part of a de-foaming agent, 4 to 5 parts of a composite synergist, 1 to 1.3 parts of a dispersing agent, 0.3 to 0.5 part of a preservative and 160 to 170 parts of water. The pesticide composition containing refined glufosinate-ammonium and fluoroglycofen-ethyl has remarkable technical advantages in the aspects of synergistic interaction, high selectivity, environmental compatibility, improvement of the utilization rate and the pesticide effect, optimization of the anti-settling performance and the like.

The application discloses a method for super-hydrophilic modification of polyamide fiber based on DES combined with multiple enzymes, and belongs to the technical field of functionalized textiles.The method for super-hydrophilic modification specifically comprises the following steps: immersing the polyamide fabric after refining treatment into DES for pretreatment, taking out and drying; then immersing into a protease modification solution for reaction; after the reaction is completed, washing, drying and balancing; then immersing into a mixed solution formed by laccase, TEMPO, trehalose and a buffer solution for reaction; after the reaction is completed, washing, drying, balancing and hydrophilic modification of the polyamide fabric are obtained; the super-hydrophilic modified polyamide fabric can reach a surface static contact angle of 9 degrees within 60 seconds, and the contact angle is reduced by 90.2 percent; the method has low energy consumption, is safe and environmentally friendly, and has good durability of hydrophilic modification.

The invention relates to the technical field of coal-water slurry, with an IPC classification number of C08F, and specifically relates to a novel naphthol distillation residue modified coal-water slurry modifier and a preparation method thereof. The raw materials for preparing the novel naphthol distillation residue modified coal-water slurry modifier include, by weight, 1-10 parts of distillation-rectification residue, 0.2-1 parts of silane coupling agent, 80-120 parts of water, 20-45 parts of anionic surfactant, 10-20 parts of phenol, 3-10 parts of alkaline compound, 10-35 parts of formic aldehyde, and 1-2 parts of auxiliary agent. The preparation method comprises: adding a silane coupling agent to the distillation-rectification residue in a heated molten state for blending and modification, adding an anionic surfactant and stirring and mixing, adding formic acid aldehyde to prepare a small monomer, adding water, phenol, and liquid sodium hydroxide into a flask, adding the remaining formic acid aldehyde, and adding the small monomer and an auxiliary agent for mixing, so as to prepare a novel naphthol distillation residue modified coal water slurry modifier, which has the advantages of good dispersibility, high stability, low viscosity, good fluidity, good practicality, low energy consumption, and the like.

The invention discloses a light-weight lithium battery diaphragm with high heat resistance and high wettability and a preparation method thereof.The light-weight lithium battery diaphragm with high heat resistance and high wettability comprises a base membrane and a coating on the base membrane, and the coating comprises porous aluminum oxide, carboxymethylated nanocellulose, acetylated nanocellulose, polyurethane, sodium hexametaphosphate and ammonium polyacrylate; the porous aluminum oxide, the carboxymethylated nanocellulose, the acetylated nanocellulose, the polyurethane, the sodium hexametaphosphate and the ammonium polyacrylate cooperate to improve the liquid absorption rate, the liquid retention rate, the peel strength, the ionic conductivity, the heat resistance and the wettability of the diaphragm, and meanwhile, the water content of the diaphragm is reduced. The density of the porous aluminum oxide, the carboxymethylated nanocellulose and the acetylated nanocellulose is relatively low, so that the diaphragm is light in weight.

The invention discloses a preparation method and application of a nonionic fluorinated surfactant, and the preparation method includes: S100: mixing non-fluorinated component material with water, and then stirring at a speed of 500r / min-800r / min for 15min-40min to obtain a first mixed material; S200: dripping an organic alkali material at a speed of 5mL / min-8mL / min into the first mixed material, and continuously stirring the first mixed material at a speed of 300r / min-400r / min to obtain a second mixed material; S300: mixing the fluorinated component material with the second mixed material, and then stirring at a speed of 2000r / min-2500r / min for 30min-50min to obtain a nonionic fluorinated surfactant. The nonionic fluorinated surfactant prepared by the method has lower surface tension and smaller contact angle, and will not pull the photoresist pattern to cause the collapse of the group when rinsing, thereby effectively ensuring the quality of photolithography.

The invention relates to a preparation method of a high-speed mouthpiece adhesive for PET (polyethylene terephthalate) tipping paper, which is mainly prepared by adding EVA (ethylene-vinyl acetate) emulsion, polyvinyl alcohol, a plasticizer, a wetting agent, a defoaming agent, a pH (potential of hydrogen) regulator, a bactericide and the like into prefabricated acrylic emulsion. The preparation method is characterized in that the prefabricated acrylic emulsion has a high solid content of 65-70%, and is prepared by suspension polymerization of a soft-segment acrylate monomer, a hard-segment acrylate monomer, a crosslinking monomer, abietate and a reactive emulsifier with carbon-carbon double bonds; the mass ratio of the prefabricated acrylic emulsion to the EVA emulsion to the polyvinyl alcohol to the plasticizer to the wetting agent to the defoaming agent to the pH value regulator to the bactericide is (20-30) to (55-65) to (5-10) to (3-5) to (0.1-0.5) to (0.1-0.5) to (0.1-0.5) to 0.1. The high-speed mouthpiece adhesive for the PET tipping paper can meet the requirements of the high-speed mouthpiece adhesive for the PET tipping paper on the bonding force, the cohesive strength and the bonding stability.

The invention relates to the field of refining and application of wood fiber biomass, and discloses a lignin-based formaldehyde-free adhesive, a lignin-based plywood and a preparation method and application of the lignin-based formaldehyde-free adhesive and the lignin-based plywood. The lignin-based formaldehyde-free adhesive disclosed by the invention comprises the following components: L-cysteine lignin, and the solid content of the lignin-based formaldehyde-free adhesive is 10-45wt%. The method comprises the following steps: mixing an aqueous solution of L-cysteine hydrochloride and lactic acid with raw materials for pretreatment; performing extraction and vacuum filtration on the obtained suspension to obtain dissolved lignin and hemicellulose filtrate, and performing extraction and purification on the filtrate to obtain L-cysteine lignin; the lignin-based formaldehyde-free adhesive is prepared by uniformly dispersing the L-cysteine lignin in water. According to the invention, the used solvent is green and nontoxic in source, the hydrated lignin-based adhesive with good fluidity is prepared with low solid content, and the prepared plywood shows excellent dry and wet bonding strength, solvent resistance and weather resistance, and meets the preparation requirements of national I-class plywood.

The invention discloses carotenoid composite particles with a low contact angle as well as a raw material composition, a preparation method and application of the carotenoid composite particles. According to the method, the problems that carotenoid is poor in water solubility and easy to degrade are solved, and the use risk of organic reagents is reduced. The composite particles contain 5-20% of carotenoid (such as lutein, beta-carotene and the like), a carrier, an emulsifier, a small molecule filler and an antioxidant. Through multiple times of low-temperature co-grinding, the contact angle is gradually reduced, and it is ensured that the particles have excellent hydrophilicity and stability. According to the process, the production process is simplified, the energy consumption is reduced, the stability of the product during rapid dissolution and dispersion in cold water and high-temperature sterilization is ensured, and the floating oil or layering phenomenon is avoided. And the final product is suitable for various foods and health-care product preparations such as solid beverages, liquid beverages, tablets and the like, as well as skin care products and cosmetic products, is particularly suitable for application scenes needing high-temperature treatment, and provides better stability and safety guarantee.

The invention discloses a cutting fluid for a semiconductor material and a preparation method thereof, and relates to the technical field of cutting fluids. The semiconductor material provided by the invention is composed of the following raw materials: 0.001-30.00 parts of a water-soluble lubricant; 0.001 to 30.00 parts of an anti-wear lubricant; 0.001 to 20.00 parts of an extreme pressure lubricant; 0.001 to 50.00 parts of a special wetting agent; 0.001 to 30.00 parts of an emulsifying dispersant; 0.001 to 90.00 parts of an antirust agent; 0.001 to 90.00 parts of a corrosion inhibitor; 0.001 to 10.00 parts of a bactericide; 0.001 to 50.00 parts of a settling agent; and 0.001 to 99.00 parts of deionized water. The prepared cutting fluid for the semiconductor material has high permeability and high lubricity, the surface quality of slices is high, the warping degree is low, and the cutting efficiency and the yield are improved.

The embodiment of the invention provides a molecular bridge organic matter, a hole transport material, a photovoltaic device, a preparation method and a photovoltaic system. Amino groups or cyano groups in the molecular bridge organic matter can be combined with lead iodine octahedrons in the perovskite light absorption layer, phosphate groups, carboxylic acid groups, sulfonic acid groups, thiol groups or hydroxamic acid groups contained in the molecules serve as anchoring groups and can be combined with metal oxides of the first electronic layer, the perovskite light absorption layer and the metal oxides are bridged, and the perovskite light absorption layer is formed. And the hole transmission capability is improved.

The application relates to the field of welding technology, and particularly discloses a water-soluble flux and a preparation method thereof. The water-soluble flux comprises the following raw materials in parts by weight: 6-12 parts of a borate ester covalent activator; 3-8 parts of cucurbituril hydrate; 0.01-2 parts of an inhibitor; 1-3 parts of a modified graphene quantum dot solution; 1-5 parts of a cyclic ether solvent; 0.5-2 parts of a metal-organic framework material containing mercapto groups; and 68-88.5 parts of deionized water. The modified graphene quantum dot solution is obtained by modifying graphene quantum dots with dioctadecyldimethylammonium chloride. The flux of the application can effectively solve the problem of water residue in the later stage after the activator is decomposed and volatilized in the early stage of welding by combining the water-soluble flux with the cyclic ether solvent, thereby reducing the problems of virtual welding, bubble defects and the like of the welding points, and effectively improving the strength and reliability of the welding points.

The invention discloses an electrolyte, a battery and a preparation method thereof, and relates to the technical field of batteries, the electrolyte comprises a basic solvent, an electrolyte salt, vinylene carbonate and an amphiphilic molecular additive; the structural formula of the amphiphilic molecular additive is R1-(CH2) n-R2. By adding the amphiphilic molecular additive into the electrolyte, the interfacial tension between the electrolyte and an electrode is remarkably reduced, the structural formula of the additive is R1-(CH2) n-R2, R1 is alkyl or aryl, the additive is endowed with hydrophobicity, and stable dispersion of the additive in the electrolyte is facilitated; r2 is carboxylate or sulfonate, hydrophilicity is provided, interaction between the electrolyte and the electrode is enhanced, due to the design, the electrolyte can permeate into a micropore structure of the electrode more easily, the solid-liquid interfacial tension is remarkably reduced, the contact angle of the electrolyte to the electrode is gradually reduced along with increase of the proportion of the additive, and the solid-liquid interfacial tension is remarkably reduced. Therefore, the wettability of the electrolyte on the electrode is obviously improved.

This invention belongs to the field of liquid metal field emission electric propulsion technology, specifically relating to a method for wetting porous metal materials with liquid metal. Addressing the problem of insufficient wetting affecting the overall performance of the liquid metal field emission electric propulsion system due to issues such as interface oxidation, pore degassing, and enhanced wetting drive during the fabrication of the emitter from porous metal materials through liquid metal wetting, this invention first removes impurities from the surfaces of the porous metal and liquid metal through multiple steps including ultrasonic cleaning, dilute acid immersion, and organic solvent cleaning, reducing the contact angle and improving wettability. Then, a tube furnace is used to achieve the required oxygen-free and high-temperature environment for wetting through gas washing, vacuuming, and heating. The wetting temperature is set to 800-1000℃, which further converts and sublimates oxides and reduces the surface tension of the liquid metal, thereby improving wettability. This invention's wetting method is low-cost, simple in process, and provides good wetting results.