37 results about "Ternary eutectic" patented technology

The invention discloses a low-viscosity ternary eutectic solvent as well as a preparation method and application thereof, and belongs to the technical field of CO2 absorbents. The low-viscosity ternary eutectic solvent is composed of polyamine hydrochloride, steric hindrance amine and organic alcohol, the polyamine hydrochloride has multiple active amino groups and is used for guaranteeing the high CO2 absorption rate and absorption load of the ternary eutectic solvent, the steric hindrance amine can inhibit formation of a hydrogen bond network due to the unique steric hindrance structure, and the high CO2 absorption rate and absorption load of the ternary eutectic solvent are improved. The organic alcohol can be used as a viscosity regulating agent, active hydroxyl of the organic alcohol can promote proton transfer in a CO2 desorption reaction, and the CO2 desorption efficiency is enhanced. The ternary eutectic solvent provided by the invention can still maintain a low-viscosity homogeneous liquid state after absorbing CO2, can effectively reduce the reduction of mass transfer efficiency caused by high viscosity, influence on contact with a target compound, heat transfer efficiency and the like, and solves the ubiquitous problems of overhigh viscosity and insufficient regeneration efficiency of the existing DESs system.

The invention discloses a method for synergistically extracting flavonoid compounds in epimedium wushanense by combining a ternary eutectic solvent with in-situ ultrasound, which is characterized in that choline bitartrate-urea-glycerol (Chb: Ure: Gly) is used as the ternary eutectic solvent, and the flavonoid compounds in epimedium wushanense are synergistically extracted by the in-situ ultrasound. The method is high in extraction speed and good in repeatability, solvent consumption can be reduced, operation steps are simplified, and efficiency is improved.

A Zn—Al—Mg-based hot-dip plated steel sheet includes a hot-dip plated layer formed on a surface of a steel sheet, in which the hot-dip plated layer contains, as an average composition, Al: 5 to 22 mass % and Mg: 1.0 to 10 mass %, with a remainder including Zn and impurities, and in a case where a 5 mm square cross section parallel to a surface of the hot-dip plated layer is exposed at any position of a 3t / 4 position, a t / 2 position, and a t / 4 position from the surface with a thickness of the hot-dip plated layer represented by t, a ratio (B / A (%)) of an area fraction B of a [Zn phase] to a total area fraction A of a [Zn phase] and an [Al / MgZn2 / Zn ternary eutectic structure] of a plating microstructure in at least one cross section is 20% or more.

The application discloses a kind of preparation methods of multi-component photocuring composite ceramic, by adding tetraethyl orthosilicate in multi-component ceramic powder, obtain modified ceramic powder, then it is mixed with photosensitive resin prepolymer, dispersing agent, diluent, photo initiator uniformly, subsequently sequentially through DLP photocuring 3D printing, debinding, sintering after obtaining composite ceramic.The application utilizes the hydrolysis condensation characteristics of tetraethyl orthosilicate, makes it react on the surface of different ceramic powder, uniformly coats silica layer, can improve the phenomenon of curing uneven caused by the difference of refractive index, absorbance and reaction sensitivity of powder;The layer has low refractive index, can also solve the problem of insufficient curing depth of non-oxide ceramic.In addition, during sintering, the silica layer forms Y-Ce-Si-O ternary eutectic system with CeO2 and Y2O3, reduces the initial temperature of liquid phase, further promotes sintering densification, provides a feasible scheme for composite ceramic, high-entropy ceramic 3D printing.

The invention discloses a preparation method of a melon-phase single crystal carbon nitride photocatalyst for visible light driven full water decomposition, and belongs to the technical field of photocatalytic material preparation. The preparation method comprises the following steps: firstly preparing prepolymerized melon phase carbon nitride, then reacting the prepolymerized melon phase carbon nitride with ternary eutectic point molten salt to synthesize partially deaminated melon phase carbon nitride, and then carrying out heat treatment on the partially deaminated melon phase carbon nitride under a vacuum condition, thereby synthesizing the single crystal melon with a triclinic crystal phase for the first time. The process is simple, the cost is low, the material is non-toxic and harmless, the actual production requirement is met, the obtained melon-phase single crystal carbon nitride can prolong the exciton diffusion length by means of high crystallinity, it can be ensured that the charge migration distance is smaller than the exciton diffusion length, and therefore bulk phase recombination is effectively inhibited, and therefore the melon-phase single crystal carbon nitride is used for visible light driven photocatalytic full decomposition of water for hydrogen production, and the hydrogen production efficiency is improved. The efficiency can be improved by nearly two orders of magnitude, and the method has great application potential.

The invention discloses a composite molten salt system and an adsorption method for efficiently adsorbing SO2 and CO2 gas in the oxidation process of nuclear-grade cation exchange resin, and belongs to the field of high-temperature heat treatment of solid wastes. According to the method, magnesium oxide is added on the basis of a ternary eutectic carbonate system, absorption of the molten salt to SO2 and CO2 generated in the nuclear-grade cation exchange resin molten salt oxidation treatment process is enhanced, pollution of sulfur-containing gas can be reduced, and carbon emission in the reaction process can also be reduced. The added magnesium oxide can react with CO2 and SO2 in a chemical adsorption manner to generate MgCO3 and MgSO4. MgO is added, so that the alkalinity of the system can be increased, and further oxidation of the resin is promoted. In conclusion, due to the addition of MgO, the content of gas products generated by complete oxidation of C and S elements in the tail gas is reduced while effective oxidation of the waste resin is realized.

The application belongs to the technical field of hydrometallurgy, and particularly relates to a ternary eutectic solvent and application thereof in separating lithium and transition metals in a lithium battery leaching solution. The ternary eutectic solvent is obtained by mixing propylcaine, lauric acid and tributyl phosphate according to a molar ratio of 1:1.5:(0.5-2). The method for separating lithium and valuable metals in waste ternary lithium batteries by using the ternary eutectic solvent comprises the following steps: (1) taking the ternary eutectic solvent as an organic phase, adding the lithium battery leaching solution into the organic phase for extraction, and centrifuging to separate phases, so as to obtain a nickel-cobalt-manganese loaded organic phase and a lithium-containing raffinate; and (2) adding a stripping agent into the nickel-cobalt-manganese loaded organic phase for back extraction, and centrifuging to separate phases, so as to obtain a nickel-cobalt-manganese stripping solution and a regenerated organic phase. The separation method has excellent selective extraction effect.

The invention discloses a ternary eutectic electrolyte for a zinc ion battery as well as a preparation method and application of the ternary eutectic electrolyte, and belongs to the technical field of zinc ion batteries. The electrolyte is composed of zinc perchlorate hydrate, acetamide and dimethyl sulfoxide according to a specific molar ratio, and the preparation method comprises the steps that the zinc perchlorate hydrate and the acetamide are mixed and stirred to form transparent liquid, then the dimethyl sulfoxide is added, stirring continues to be conducted, and the uniform and transparent eutectic electrolyte is formed. Through the ternary eutectic system design, the zinc ion coordination environment is effectively regulated and controlled, the obtained electrolyte is low in viscosity and high in ionic conductivity, when the electrolyte is applied to a zinc ion battery, zinc dendrite growth and side reaction can be remarkably inhibited, the cycle life of a Zn | | Zn symmetric battery under 1 mA cm <-2 > exceeds 3800 hours, the capacity retention rate of a Zn | | PANI total battery after 500 cycles under 0.5 A g <-1 > reaches 99.8%, and the capacity retention rate of the Zn | | PANI total battery under 0.5 A g <-1 > reaches 99.8%. And the cycle stability and the service life of the battery are greatly improved.

The application discloses a ternary eutectic solvent, a hybrid self-lubricating material, a polymer self-lubricating composite material and a preparation method thereof. The raw materials of the ternary eutectic solvent include choline chloride, oxalic acid dihydrate and 1-hexadecyl-3-methyl imidazole bromide; wherein the amount of choline chloride is 25-30 parts, the amount of oxalic acid dihydrate is 35-40 parts, and the amount of 1-hexadecyl-3-methyl imidazole bromide is 0.5-1.0 parts in terms of the weight fraction ratio. The application initiatively synchronously pretreats lignocellulose and two-dimensional materials by using ternary DES (choline chloride / oxalic acid dihydrate / ionic liquid crystal), solves the core problems of poor dispersibility of lignocellulose and agglomeration of two-dimensional materials from the source by using the interfacial activity of ionic liquid and the deconstruction ability of DES, and realizes efficient activation of biomass raw materials.

This invention relates to a method for preparing maleic acid, belonging to the field of organic chemistry. The method includes the following steps: mixing choline chloride, propylene glycol, and malonic acid to obtain a eutectic solvent; adding furfural and a titanium-silicon molecular sieve catalyst to the eutectic solvent under a microwave-ultrasound composite field atmosphere, followed by the dropwise addition of an oxidant to carry out a catalytic oxidation reaction, thereby obtaining maleic acid. Compared with existing technologies, this invention, for the first time, constructs a reaction system using a ternary eutectic solvent of choline chloride-propylene glycol-malonic acid and a titanium-silicon molecular sieve catalyst, while simultaneously enhancing the mass and heat transfer processes within the reaction system through the application of an externally applied microwave-ultrasound composite field of appropriate power, thereby improving the yield of the target product, maleic acid, and overcoming the shortcomings of existing technologies such as low product yield, providing a new technical means for the preparation of maleic acid.

The application relates to a preparation method of a niobium titanium oxide / liquid metal composite negative electrode material and application of the niobium titanium oxide / liquid metal composite negative electrode material in a low-temperature lithium ion battery, and belongs to the field of secondary batteries. The method is as follows: TiNb2O7 microspheres are synthesized, SnO2 is deposited on the surface of the TiNb2O7 by adopting an atomic layer deposition technology and taking SnCl4 and H2O as precursors, and TNO@Sn material is obtained through hydrogen reduction; TNO@Sn powder, Super P and PVDF are uniformly mixed in a solvent to prepare a slurry, the slurry is coated on a copper foil current collector, and an electrode sheet is obtained through rolling; Ga-In-Sn ternary eutectic liquid metal is prepared, the liquid metal is uniformly sprayed on the surface of the electrode sheet in an Ar atmosphere glove box, the Ga-In-Sn liquid metal / TiNb2O7 composite negative electrode is prepared in a "cold welding" mode, the interface bonding force between the liquid metal and the active particles is enhanced through an alloying reaction, the composite process temperature is reduced, and the damage of high temperature to the material is avoided. Meanwhile, the flowability, self-healing and high conductivity of the liquid metal compensate for and enhance the ion / electron transmission deficiency of the TiNb2O7 composite electrode at low temperature, and high safety is ensured.

The invention provides a silicon-based brazing filler metal and a connecting method of SiC and SiCf / SiC, and relates to the technical field of welding, and the silicon-based brazing filler metal comprises the following components in percentage by mole: 2.3%-8.3% of Ti, 2.3%-8.3% of Zr, 2.3%-8.3% of Hf and the balance of Si. The silicon-based brazing filler metal is ternary eutectic silicon-based brazing filler metal composed of titanium (Ti), zirconium (Zr), hafnium (Hf) and silicon (Si) in a specific proportion, and the silicon-based brazing filler metal is located in a Si-rich near-eutectic interval by controlling the total mole fraction of metal elements in the silicon-based brazing filler metal. The silicon-based brazing filler metal provided by the invention is used for connecting silicon carbide and a silicon carbide fiber reinforced silicon carbide ceramic-based composite material, and a welding joint with relatively high strength can be obtained.

The application discloses a method for preparing nanocellulose by treating bamboo shoot shell through a eutectic solvent, and comprises the following steps: S1, configuration of the eutectic solvent: after uniformly mixing a first component, a second component and a third component, the mixture is heated and stirred to obtain a ternary eutectic solvent; S2, configuration of a cosolvent: after uniformly mixing benzyl tripropyl ammonium hydroxide, 1'3-bishydroxymethyl urea and water, the mixture is heated and stirred to obtain the cosolvent; S3, preparation of nanocellulose: after mixing pretreated bamboo shoot shell, the ternary eutectic solvent and the cosolvent, the mixture is heated and stirred, after the reaction is completed, the mixture is washed with water, filtered, dried, and the obtained crude cellulose is configured into a suspension, and then ultrasonic treatment, high-pressure homogenization and freeze-drying are carried out to obtain nanocellulose. The nanocellulose obtained through the method has a high yield (88.36%), a high proportion of cellulose (90.19%) and a size of 58.78 nm.

The application relates to the field of batteries and discloses a solid-state electrolyte precursor and a lithium metal battery. The solid-state electrolyte precursor is characterized in that the solid-state electrolyte precursor comprises a ternary eutectic solvent, an ether monomer, a fluorine ether diluent and a lithium salt; the ternary eutectic solvent comprises lithium bistrifluoromethylsulfonylimide, a Lewis acid and a Lewis base; and the molar ratio of the lithium bistrifluoromethylsulfonylimide and the Lewis acid is 1:0.01-5. The solid-state electrolyte precursor contains a specific ternary eutectic solvent, a lithium metal battery containing a deep eutectic solid-state electrolyte obtained by in-situ polymerization of the solid-state electrolyte precursor has good interface stability, the generation of lithium dendrites is inhibited, the lithium metal cycle stability is high, and the safety performance is more excellent.

The application provides a biomass-based composite heterostructure hydrogen evolution catalyst and a preparation method and application thereof, and belongs to the technical field of electrocatalytic decomposition hydrogen evolution catalysts. Biomass cellulose is prepared by treating biomass as raw material through a ternary eutectic solvent, cobalt is loaded on carbon cloth, a three-dimensional network Co@NCNT / CC carrier is prepared by combining microwave calcination, and the biomass-based composite heterostructure hydrogen evolution catalyst is prepared by preparing cobalt molybdate, and then carrying out a hydrothermal reaction on the cobalt molybdate, thiourea and the carrier. The catalyst takes Co@NCNT / CC as a three-dimensional carrier, grows petal-shaped CoS2@MoS2 heterojunction on the surface, and forms an efficient charge transport channel through Mo-S-Co bonds. The catalyst has excellent catalytic activity, reaction kinetics, structural stability and acid-base tolerance, the process is green and sustainable, and is suitable for industrial application of water electrolysis hydrogen production.

This plated steel material is a plated steel material including: a steel material; and a plating layer disposed on a surface of the steel material, wherein the plating layer has a predetermined average chemical composition, in a cross section of the plating layer perpendicular to the surface of the steel material, a microstructure observed with a scanning electron microscope includes, in terms of area fraction, a MgZn2 phase: 10% or more and 50% or less, a total of an Al phase, an Al—Zn phase, and a Zn—Al phase: 15% or more and 75% or less, a [ternary eutectic structure of Al / MgZn2 / Zn]: 0% or more and 65% or less, and the remainder: 0% or more and 5.0% or less, and an area ratio (([Al]+[Zn—Al]) / [Al—Zn]) of a total of the Al phase and the Zn—Al phase to the Al—Zn phase is 0.8 or more.

The invention discloses a double-rare-earth-doped magnesium-based hydrogen storage alloy and a preparation method thereof, relates to the technical field of hydrogen storage alloys, and solves the problems that an existing magnesium-based hydrogen storage material is limited in hydrogen storage capacity and slow in hydrogen absorption and dehydrogenation rate. The alloy comprises 68.8-91 wt.% of Mg, 5-15 wt.% of Ni, 2-8 wt.% of Y, 2-8 wt.% of Eu, and the balance of Fe and unavoidable impurities. The material is composed of an alpha-Mg phase, an LPSO phase, a Mg2Ni phase and a Mg17Eu2 phase, wherein Mg2Ni, Mg17Eu2 and part of alpha-Mg form a ternary eutectic structure. The magnesium ingot, the magnesium-nickel alloy, the magnesium-yttrium alloy and the magnesium-europium alloy are placed in a smelting crucible, protective atmosphere is introduced, and the melt is heated to 700-750 DEG C and stirred to be melted; and cooling to 680-700 DEG C, casting to obtain an alloy ingot, and crushing to obtain alloy powder. The method can be used in hydrogen energy storage and transportation, fuel cells, new energy automobiles, distributed energy systems, aerospace and other hydrogen energy related fields needing efficient hydrogen storage.

The application provides a method for extracting piperine in piper longum, comprising the following steps: defatting the crushed piper longum to obtain defatted piper longum powder, mixing the defatted piper longum powder with a ternary eutectic solvent, performing ultrasonic extraction, filtering and centrifuging to obtain supernatant, performing multiple extraction on the supernatant, combining the extraction liquid to obtain a piperine extraction liquid, wherein the ternary eutectic solvent comprises choline chloride-lactic acid-ethylene glycol or choline chloride-lactic acid-1,2-propanediol. The application combines the optimal eutectic solvent system screened out with the ultrasonic extraction technology, and the extraction rate of piperine in piper longum is measured to be as high as 9.42%, which provides a new idea for efficient extraction of piperine in piper longum and high-value conversion of piper longum resources.

The invention discloses a middle layer for Al-rich magnesium alloy welding. The middle layer comprises an aluminum layer and silver layers distributed on the two sides of the aluminum layer. The invention further discloses a welding method of the Al-rich magnesium alloy, which comprises the following steps of: placing the middle layer between two Al-rich magnesium alloys, pressing, and carrying out TLP welding. The intermediate layer forms an Mg-Al-Ag ternary eutectic system through element mutual diffusion of an Ag-Al interface, the problem that a brittle Mg17Al12 phase is easily generated by a single Al layer is avoided, the defect that a joint is discontinuous due to liquid phase loss of a single Ag layer is also overcome, and the strength of a welded joint is improved; and moreover, the temperature field is regulated and controlled by stages through a double-temperature process, so that the sufficiency of interface reaction is ensured, excessive loss of a liquid phase is inhibited, a uniform and continuous Mg-Al eutectic framework structure is formed in a joint solidification area, and the strength of a welded joint is further improved.

The invention relates to composite modified biochar and a preparation method thereof, and belongs to the technical field of biochar preparation. In order to solve the problem that existing corn straw modified biochar is difficult to efficiently adsorb and convert water pollutants, the invention provides a preparation method of composite modified biochar, and the preparation method comprises the steps of corn straw pretreatment, acid modified biochar preparation and magnesium salt modified biochar preparation. The synergistic optimization of the microstructure and surface chemical properties of the biochar is realized through a combined process of ternary eutectic solvent pretreatment, citric acid-boric acid composite acid modification and magnesium chloride loading. The modified biochar has a high specific surface area and a developed mesoporous channel structure, provides sufficient adsorption space channels for water pollutants, solves the problem of insufficient adsorption performance of a traditional modified material, can effectively reduce the risk of water pollution, provides a low-cost and high-performance purification material for the field of environmental restoration, and has a wide application prospect.

A highly corrosion-resistant coated steel plate and a preparation method therefor. The steel plate is composed of a steel base and a coating layer. The microstructure of the coating layer is a Zn-MgZn2-Al ternary eutectic phase, a Zn-Al binary eutectoid phase, a Zn-MgZn2 binary eutectic phase, an Mg2Si-Zn ternary eutectic phase, and an Al-Zn-Fe-Si alloy layer, and the chemical composition of the coating layer comprises 10-20% of Al, 2.2-6% of Mg, 0.08-0.4% of Si, and 0.05-0.6% of RE. The medium-aluminum-zinc-aluminum-magnesium coated steel prepared by the method has better corrosion resistance than a traditional zinc-aluminum-magnesium coating layer. The microstructure of the coating layer is controlled by means of a composition system and a cooling process. Thus, the microstructure of grains is refined, the occurrence of a pure zinc phase as a weak phase is avoided, the corrosion resistance is improved, the occurrence of brittle phases such as a rare earth phase and a silicon-rich phase is eliminated, and the formability of the coating layer is optimized; moreover, the coating layer, after being bent, shows reduced cracks and still has good corrosion resistance, and thus the use requirements of photovoltaic steel for 30 years can be met.

The application discloses a tin bronze rod wire and a preparation method thereof. The tin bronze rod wire is composed of the following components in percentage by weight: Sn: 10-14 wt%, P: 0.05-0.3 wt%, Zn: 0.01-0.5 wt%, and the balance of Cu and inevitable impurities. The structure of the tin bronze rod wire includes alpha+delta+Cu3P ternary eutectic crystals, and the area ratio of the alpha+delta+Cu3P ternary eutectic crystals is less than or equal to 0.5%. The tin bronze rod wire has good mechanical properties.

The invention provides a method for recycling a ternary positive electrode material in a waste lithium ion battery, which comprises the following steps of: pretreating the waste lithium ion battery to obtain a waste ternary positive electrode material; the method comprises the following steps: mixing the waste ternary positive electrode material with a ternary eutectic solvent, carrying out leaching reaction, and carrying out solid-liquid separation to obtain a leaching solution containing nickel, cobalt and manganese; nickel, cobalt and manganese in the leachate containing nickel, cobalt and manganese are recovered; the ternary eutectic solvent is prepared from acetamide, pyruvic acid and sorbitol. By introducing the ternary eutectic solvent composed of acetamide, pyruvic acid and sorbitol, a green, sustainable, economical and feasible recovery process which is mild in condition is developed, efficient leaching of nickel, cobalt, manganese and other valuable metals can be guaranteed, the leaching reaction can be carried out under the mild condition, and the method is suitable for industrial production. And strong acid and an external reducing agent are not needed, so that the energy consumption and the equipment loss are greatly reduced, and the environmental load is remarkably reduced.

Provided are a coated steel product in which a coating layer has a predetermined chemical composition, and in a backscattered electron image of a Zn—Al—Mg alloy layer, obtained by polishing a surface of the coating layer to ½ of a layer thickness, and observing the surface at a magnification of 100× with a scanning electron microscope, Zn / Al / MgZn2 ternary eutectics are present, and an average value of a cumulative circumferential length of the Zn / Al / MgZn2 ternary eutectics is from 100 to 300 mm / mm2 and a method of manufacturing the coated steel product.

The invention discloses a method for rapidly extracting lignin through concerted catalysis, lignin extracted through the method and application, and the method comprises the following steps: (1) heating and stirring a ternary eutectic solvent into uniform and transparent liquid, then adding a catalyst silicomolybdic acid, uniformly mixing, and then drying to remove moisture to obtain a mixed solution; the modified ternary eutectic solvent is obtained; and (2) mixing a biomass raw material with the modified ternary eutectic solvent, heating for reaction, cooling to room temperature after the reaction is completed, performing centrifugal separation, adding water into an obtained liquid phase, performing static settlement, and finally separating, precipitating and washing to obtain the lignin. And (3) carrying out a free radical scavenging experiment on the obtained lignin, and measuring the oxidation resistance. According to the method, rapid separation of lignin can be realized, the extraction time is greatly shortened, the lignin yield is improved, and the high-added-value application of lignin applied to natural antioxidants subsequently is improved.

The present application relates to a kind of high corrosion resistance high-aluminum zinc-aluminum magnesium silicon coating steel plate and its manufacturing method, in coating, in the multi-component phase of aluminum-zinc dendrite gap, according to the total area occupied by aluminum-zinc dendrite gap: MgZn2 intermetallic compound accounts for 10%~20%, Mg2Si intermetallic compound accounts for 2%~5%, Zn-Al-Mg ternary eutectic structure accounts for more than 60%.The present application aims to improve the surface and edge corrosion resistance of high-aluminum zinc-aluminum magnesium silicon coating steel plate.By component optimization and process parameter setting, form reasonable coating organization and form, further improve the corrosion resistance of coating.

The invention relates to an easily degreased zinc-aluminum-magnesium coated steel plate and a preparation method thereof, and belongs to the technical field of steel plate preparation. The steel plate comprises a steel base body and a zinc-aluminum-magnesium plating layer covering the surface of the steel base body, and the area proportion of an eutectic structure on the surface of the zinc-aluminum-magnesium plating layer is smaller than 30%. The eutectic structure is generally divided into ternary eutectic Zn-Al-MgZn2 or binary eutectic Zn-MgZn2, so that a large amount of aluminum and magnesium elements can be gathered, and the grease is easy to store; therefore, by reducing the proportion of eutectic structures on the surface of the coating, the aggregation degree of aluminum and magnesium elements on the surface of the zinc-aluminum-magnesium coating is reduced, a large number of oxides are prevented from being formed on the surface layer of the coating, polarity is reduced, grease is prevented from being stored easily, and therefore the function that the coating is easy to degrease is achieved.

The application discloses a self-healing stretchable eutectic gel electrolyte and a preparation method and application thereof. The preparation method comprises the following steps: heating a mixed reaction system comprising a supramolecular gel factor, an amphoteric polymer monomer, a crosslinking agent, a photoinitiator, a ternary eutectic solvent and a metal salt to complete dissolution, then cooling to room temperature to form a first heavy supramolecular gel network, and then performing a photoinitiated polymerization reaction to obtain the self-healing stretchable eutectic gel electrolyte. The eutectic gel electrolyte prepared by the application has excellent self-healing property, stretchability and wide temperature range resistance, and simultaneously has good conductivity and high metal ion transference number, so that the generation of metal dendrites can be avoided, and the eutectic gel electrolyte has a good application prospect in the field of flexible energy storage.

This invention belongs to the field of lithium battery material recycling and structural reconstruction technology, specifically relating to a method for the re-monocrystalline regeneration of waste lithium-ion battery cathode materials. The invention involves subjecting the waste lithium-ion battery cathode material to a first tempering treatment; mixing a portion of the first tempered material with a ternary eutectic molten salt system, followed by molten salt calcination, water washing, drying, and a second tempering treatment to obtain a second tempered material; mixing the remaining first tempered material with an electrolyte system, followed by a third tempering treatment to obtain a third tempered material; and mixing the second and third tempered materials with monocrystalline cathode material, followed by ball milling and a fourth tempering treatment. The regenerated cathode material obtained by this invention exhibits high structural stability and good cycle reversibility, with electrochemical performance superior to that of commercial monocrystalline cathodes. Furthermore, this invention requires low-level equipment, is easy to operate, has a short cycle time, and low energy consumption.

The invention provides a ternary eutectic electrolyte, a preparation method thereof and a lithium metal battery, and belongs to the technical field of lithium metal battery electrolytes. According to the electrolyte disclosed by the invention, a third component, namely a sulfonic acid substance, is added into the nitrile-based eutectic binary electrolyte, so that the problem of serious side reaction between the nitrile-based eutectic electrolyte and lithium metal is solved. Sulfonic acid substances can solvate lithium salt through Lewis acid-base acting force (Li-O coordination), electron-rich sulfonic acid groups can form hydrogen bonds with alpha hydrogen of nitrile groups, the alpha hydrogen of the sulfonic acid groups can also form hydrogen bonds with the nitrile groups, that is, the addition of the sulfonic acid substances promotes the ternary eutectic solvent to form rich hydrogen bond networks (N.H, O.H), and the lithium salt can be solvated by the ternary eutectic solvent. The activity of alpha hydrogen is inhibited, and the compatibility of the electrolyte and lithium metal is improved.