252 results about "Hexafluorophosphate" patented technology

The invention relates to the technical field of polyurethane synthesis, and discloses a polyurethane prepolymer and composition based on supramolecular weaving crosslinking and a preparation method of the polyurethane prepolymer, and a cross-linking agent in the polyurethane prepolymer comprises a compound as shown in a formula I and organic copper salt; the molar ratio of the compound as shown in the formula I to the organic copper salt is 1: (1.8-3); the organic copper salt is selected from copper tetraacetonitrile tetrafluoroborate and / or copper tetraacetonitrile hexafluorophosphate. According to the invention, the dynamic nature of a mechanical interlocking supramolecular structure is utilized, and a polymer with a topological structure is woven through an ectopic ring-opening polymerization strategy. The woven polymer can be used as a cross-linking agent of a polyurethane composition, can endow the polyurethane composition with relatively high mechanical property and good tensile property at the same time, and greatly improves the tensile toughness of polyurethane. # imgabs0 #

The invention belongs to the technical field of new materials, and discloses a polyolefin dissolving agent as well as a preparation method and application thereof. The cleaning agent is composed of modified long-carbon-chain imidazole dinitrile amine salt, modified long-carbon-chain imidazole long-carbon-chain anion salt, betaine salt, imidazole acetate, imidazole long-carbon-chain anion salt, quaternary ammonium long-carbon-chain anion salt, imidazole bis (fluorosulfonyl) imide salt, imidazole hexafluorophosphate and long-carbon-chain anion and cation liquid. Under the condition of 180-210 DEG C, polyolefin (PP or PE) with the molecular weight of 50-8 million can be dissolved by adopting the polyolefin dissolving agent disclosed by the invention, and effective extrusion can be realized by adopting a twin-screw extruder after dissolution. After PP / PE powder is dissolved by adopting the polyolefin dissolving agent disclosed by the invention, sheet casting or spinning is carried out, casting sheets or PP / PE fibers are washed by using ethanol / dichloromethane / hydrocarbon / tetrachloroethylene to remove ionic liquid, and a polyolefin diaphragm or polyolefin fibers can be prepared.

The application relates to a cylindrical battery monomer, a battery and a power utilization device. The cylindrical battery monomer comprises electrolyte, an electrode assembly and a shell. The shell contains the electrolyte and the electrode assembly. The electrolyte comprises an electrolyte salt, and the electrolyte salt comprises a hexafluorophosphate. The shell comprises a shell body and a film layer. The film layer is arranged on at least a surface of the shell body facing the electrode assembly. The base element of the film layer is a nickel element. The use reliability and the cycle performance of the cylindrical battery monomer in the embodiment can be improved.

The invention discloses a continuous cyclic preparation method of hexafluorophosphate. The method comprises the following steps: S1, preparation of a metal salt anhydrous hydrogen fluoride solution: adding anhydrous hydrogen fluoride and metal halide salt into a reaction kettle, and uniformly mixing, so that the metal halide salt is dissolved in the anhydrous hydrogen fluoride to obtain the metal salt anhydrous hydrogen fluoride solution; s2, preparing a hexafluorophosphate anhydrous hydrogen fluoride solution: adding phosphorus pentachloride into the reaction kettle under a temperature control condition for reaction; a hexafluorophosphate anhydrous hydrogen fluoride solution is obtained; and S3, separation of hexafluorophosphate: transferring the hexafluorophosphate anhydrous hydrogen fluoride solution into a drying tower for drying, condensing gasified anhydrous hydrogen fluoride at the top of the drying tower into liquid anhydrous hydrogen fluoride by a condenser, refluxing the liquid anhydrous hydrogen fluoride into the reaction kettle in the step S1, and collecting a hexafluorophosphate product at the bottom of the drying tower. The continuous cyclic preparation method of hexafluorophosphate has the characteristics of high raw material utilization rate, simple process and good production continuity.

The invention discloses an optical paste film and a preparation method thereof, and relates to the technical field of optical functional materials. The optical slurry film is prepared by taking a polyethylene glycol terephthalate film as a base material and coating an optical slurry coating, the optical slurry coating is prepared from the following raw materials in parts by weight: 12 to 16 parts of nano silicon dioxide, 22 to 28 parts of acetone and butanone mixed solvent, 7 to 9 parts of modified titanium dioxide, 4 to 6 parts of nano zirconium oxide, 30 to 35 parts of modified epoxy resin, 18 to 22 parts of butyl acrylate, 4 to 6 parts of dioctyl sebacate, 2.5 to 3.5 parts of silane coupling agent KH-570, 1 to 1.5 parts of organic silicon flatting agent and 0.6 to 1 part of organic silicon defoaming agent. 1.2-1.8 parts of an antioxidant 1010, 3-4 parts of a photoinitiator 184 and 6-8 parts of bis (4-tert-butylphenyl) iodine hexafluorophosphate; the polyethylene glycol terephthalate film pretreatment material comprises absolute ethyl alcohol and deionized water. The raw materials are scientifically proportioned, the titanium dioxide and the epoxy resin are clearly modified, the preparation process is complete, and the finished product is high in light transmittance, good in weather resistance, adaptive to the requirements of the optical field and high in practicability.

The invention belongs to the technical field of chemical production, and discloses an ionic liquid dissolving agent mixture as well as a preparation method and application thereof. The ionic liquid dissolving agent mixture is prepared from the following raw materials: modified long-carbon-chain imidazole tetrafluoroborate, modified long-carbon-chain imidazole long-carbon-chain anion salt, betaine salt, imidazole acetate, imidazole haloid, imidazole bis (fluorosulfonyl) imide salt, imidazole hexafluorophosphate, imidazole long-carbon-chain anion salt and quaternary ammonium long-carbon-chain anion salt. And pyridine halogen salts. When the ionic liquid dissolving agent mixture is used for dissolving PE powder and PP powder, a dichloromethane extracting agent can be replaced with water, cyclic utilization of the ionic liquid can be achieved, an original high-investment tail gas treatment device is eliminated, cost reduction and efficiency improvement are achieved for the industry, and meanwhile the performance of PE and PP diaphragms can be improved.

A PROCESS FOR THE PREPARATION OF METAL HEXAFLUOROPHOSPHATE The present invention relates to a mechanical process for the preparation of metal- hexafluorophosphate, wherein the process is devoid of solvent use and purification step and involves less metal use. The present invention also relates to the use of metal-hexafluorophosphate as an electrolyte salt in different batteries.

The invention relates to the technical field of rubber material preparation, and discloses a flame-retardant environment-friendly rubber material and a preparation method thereof. The preparation method comprises the following steps: carrying out ball milling on phosphamide bis-hexafluorophosphate ionic liquid and a carbon nanotube to obtain an ionic liquid modified carbon nanotube; and mixing with silicone rubber, a vulcanizing agent and the like, and vulcanizing to obtain the flame-retardant environment-friendly rubber material. The phosphamide bis-hexafluorophosphate ionic liquid contains a plurality of hexafluorophosphate ionic groups, and has a large interaction force with the carbon nanotubes, so the surface modification of the carbon nanotubes is effectively realized, the dispersibility of the carbon nanotubes in a silicone rubber matrix is improved, and the tensile property, hardness and other mechanical properties of the silicone rubber are improved. The ionic liquid contains phosphamide and imidazole groups to form a nitrogen-phosphorus flame retardant, and the nitrogen-phosphorus flame retardant and the carbon nanotubes play a synergistic flame-retardant role, so that the flame-retardant property of the rubber is remarkably improved.

Provided is an electrolyte solution which contains a bis(fluorosulfonyl) imide salt, a hexafluorophosphate, a compound that contains an anion represented by general formula (1), and a nonaqueous solvent, wherein: the ratio of the mass of the hexafluorophosphate to the mass of the bis(fluorosulfonyl) imide salt in the electrolyte solution is 0.45 or less; and the content of the compound that contains an anion represented by general formula (1) is 0.03 mass% or more in 100 mass% of the electrolyte solution.　General formula (1): R1SO3 - (R1 represents a halogen atom.)

The present invention discloses a continuous production process of liquid lithium hexafluorophosphate, and relates to the technical field of lithium ion battery electrolyte. The whole process of this process is carried out under nitrogen sealing conditions. After liquid anhydrous hydrogen fluoride and liquid chlorine are introduced into a microchannel mixer for mixing, they are introduced into a primary tubular reactor together with phosphorus trichloride liquid for reaction, and the generated gas is introduced into a gas-liquid separator and a condenser to obtain phosphorus pentafluoride gas, which is continuously introduced into a secondary tubular reactor to react with a lithium fluoride solution to generate an unsaturated solution of lithium hexafluorophosphate; the generated lithium hexafluorophosphate solution is adsorbed by a trifluoromethyl hydrogen type macroporous cationic resin, the trifluoromethyl hydrogen type macroporous cationic resin is filtered to remove, the filtrate is crystallized and dried, and the dried lithium hexafluorophosphate crystals are prepared as liquid lithium hexafluorophosphate. This process realizes the continuous production of liquid lithium hexafluorophosphate, improves the safety in the production process, effectively improves the product quality, and meets policy requirements.

The invention provides a preparation method of a grinding aid for Sc / O doped sulfide solid electrolyte, which comprises the following steps: mixing and reacting ethanolamine thioglycolate, 2-vinyl-5, 5-dimethyl-1, 3, 2-borane dioxide, 1-allyl-3-ethylimidazolium hexafluorophosphate and potassium ethoxide in a solvent, reacting the ethanolamine thioglycolate with the 2-vinyl-5, 5-dimethyl-1, 3, 2-dioxo-borane, and reacting with the potassium ethoxide to obtain the grinding aid for Sc / O doped sulfide solid electrolyte. The grinding aid for the Sc / O doped sulfide solid electrolyte is prepared by the following steps: carrying out sulfydryl-alkenyl addition reaction on ethanol amine thioglycolate and 1, 2-borane dioxide, carrying out sulfydryl-alkenyl addition reaction on ethanol amine thioglycolate and 1-allyl-3-ethylimidazolium hexafluorophosphate, and removing a solvent after the reaction is finished, so as to obtain the grinding aid for the Sc / O doped sulfide solid electrolyte. The grinding aid can improve the microstructure of the electrolyte material, thereby enhancing the conductivity and safety of the electrolyte material.

The invention provides a system and method for separating lithium in oil field brine, and the system comprises an extraction unit which is used for carrying out extraction and phase separation on the oil field brine and an extraction system, the main extraction agent is prepared from at least one of 1-hexyl-3-butylimidazole hexafluorophosphate, 1-hexyl-3-butylimidazole bis (trifluoromethanesulfonimide) salt, 1-octyl-3-butylimidazole hexafluorophosphate, and 1-octyl-3-butylimidazole bis (trifluoromethanesulfonimide) salt; the main extraction agent is prepared from at least one of the following components: 1-hexyl-3-butylimidazole hexafluorophosphate, 1-hexyl-3-butylimidazole bis (trifluoromethanesulfonimide) salt; the elution unit is communicated with the extraction unit and is used for mixing and eluting the organic phase obtained by the extraction unit and an eluent to obtain a water phase and an organic phase; and the reverse extraction unit is communicated with the elution unit and is used for mixing the organic phase obtained by the elution unit with a reverse extraction solution and performing reverse extraction to obtain an organic phase and a water phase, and the water phase is a lithium-containing solution. According to the method, the specific ionic liquid extraction agent is used for extracting the lithium in the oil field brine, acid and alkali are not needed to regulate the pH value, an emulsification phenomenon is avoided in the extraction process, and the extraction rate and the total recovery rate of the lithium ions are relatively high.

The invention discloses a fluorine release film for a high-viscosity silica gel protective film of an AF glass screen and a preparation method of the fluorine release film, and belongs to the technical field of unsaturated polyester, raw materials are uniformly mixed and coated on a PET base material, during high-temperature heat preservation, part of double bonds on a modified release agent and a modified filler can react with silicon-hydrogen bonds on hydrogen-containing silicone oil under the action of chloroplatinic acid, so that the fluorine release film is formed. The modified filler and the modified release agent are grafted by residual double bonds on the modified filler and the modified release agent under the action of 2, 4, 6-trimethylbenzoyl-diphenyl phosphine oxide through ultraviolet irradiation, so that the modified filler is more thoroughly contacted with polymer molecules, a stable conductive grid can be formed during raw material curing, and the conductivity of the conductive grid is improved. Meanwhile, under the action of triphenyl sulfonium hexafluorophosphate, an expanding monomer DB-TOSU is subjected to double-ring-opening polymerization to form bicyclic acetal, the bicyclic acetal is converted into carbonyl and hydroxyl, and the carbonyl and hydroxyl are matched with a polyhedral oligomeric silsesquioxane structure on the modified filler, so that the smoothness of the surface of the release film is ensured.

The invention relates to the technical field of adhesive preparation and application, in particular to a high-voltage-resistant damp-heat-resistant organosilicon sealant for a new energy power system. The organic silicon sealant is prepared from a component A, a component B and a platinum-ionic liquid catalyst, the component A is prepared from the following components: modified boron-nitrogen heterocyclic polysiloxane, a fluorine-containing siloxane composite filler, 3-epoxypropoxy propyl triethoxy silane and 2, 5-dimethyl hexynediol; the component B is prepared from the following components: hydrogen-terminated silicone oil, perfluorononyl polydimethylsiloxane, nano zinc oxide and gamma-methacryloxy propyl trimethoxy silane; and the platinum-ionic liquid catalyst is prepared from chloroplatinic acid and 1-butyl-3-methylimidazolium hexafluorophosphate. The high-pressure-resistant damp-heat-resistant organic silicon sealant provided by the invention has better heat-conducting property and high-pressure resistance, after 1200h damp-heat aging treatment, the retention rates of the heat conductivity and the volume resistivity are both greater than 91%, and the sealant has good extreme damp-heat weather resistance.

The invention discloses a method for determining dextrocarnitine in a levocarnitine product by using high performance liquid chromatography, and the chromatographic conditions are as follows: cellulose-tri-(3, 5-dimethyl phenyl carbamate) is used as a filler for a chromatographic column, a hexafluorophosphate buffer solution-acetonitrile is used as a mobile phase, the volume ratio is 77: 23-69: 31, the column temperature is 15-25 DEG C, the flow velocity is 0.3-0.5 ml / min, and the detection wavelength is 246nm. The method disclosed by the invention can be used for rapidly and accurately detecting the dextrocarnitine in the levocarnitine product and calculating the content of the dextrocarnitine, is simple to operate and good in reproducibility, can better realize quality control of the levocarnitine preparation and an intermediate product thereof, and provides guarantee for synthesis and preparation process optimization.

The invention discloses a modified polypeptide as well as a preparation method and application thereof, the preparation method comprises the following steps: on the basis of solid-phase synthesis of RADA16, 1-hydroxybenzotriazole and benzotriazole-N, N, N ', N'-tetramethylurea hexafluorophosphate are adopted as condensing agents, N, N-diisopropylethylamine-containing N, N-diisopropylethylamine is added into the condensing agents, and a reaction is carried out for 2-4 hours to obtain the modified polypeptide. And adding amino-terminated or carboxyl-terminated polyethylene glycol or amino-containing chitosan oligosaccharide into N, N-dimethylformamide for condensation, cutting polypeptide from the resin after the reaction is completed, precipitating, washing, re-dissolving and freeze-drying to obtain the polypeptide. The polypeptide provided by the invention has the characteristic of forming hydrogel through self-assembly in a specific medium, and the gel forming time of the polypeptide is within 21-60 seconds and is obviously faster than that of RADA peptide (gel forming in 150 seconds) under the same condition; the polypeptide modified by the polyethylene glycol or the chitosan oligosaccharide can spontaneously form gel after being injected into the blood vessel so as to embolize the blood vessel, and the embolism is long in stabilization time and stable, and meets the actual clinical requirements.

The invention relates to a manufacturing method of a photodynamic antibacterial fiber membrane for masks, which is characterized by comprising the following steps: step 1, preparing 1-methyl-5-(4-methoxyphenyl) quinoline; step 2, preparation of 1-methyl-5-(4-methoxyphenyl) quinolinium hexafluorophosphate; step 2, preparation of 2-methyl-5-(4-methoxyphenyl) quinolinium; and step 3, preparation of an electrostatic spinning fiber membrane: polylactic acid and polyethylene glycol are dissolved in a solvent, the target product is added to form a spinning solution, and the spinning solution is used for electrostatic spinning to form the electrostatic spinning fiber membrane. According to the invention, the photodynamic antibacterial fiber membrane with excellent stability, biodegradability, reusability and antibacterial efficiency can be prepared. Compared with a traditional non-woven fabric mask, the fiber membrane shows higher bacterium adsorption and killing capacity in air containing various bacteria by means of the high specific surface area of the fiber membrane and the synergistic effect of the high-activity antibacterial agent 5-MPQ-Me.

The invention belongs to the field of fire material evidence traceability, and particularly relates to a self-healing type fire material evidence logistics transportation buffer material and a preparation method thereof. Aiming at the problems that in the prior art, a buffer material for protecting fire material evidences is easy to damage, is not flame-retardant, cannot be self-closed and can cause confusion or loss of the material evidences, (4-vinylphenyl) dimethylsilane, 1-vinyl-3-butylimidazolium hexafluorophosphate ionic liquid and butadiene are used as raw materials, and are subjected to in-situ polymerization in pores of melamine sponge, so that the material evidences are formed; the buffer material with flame-retardant and self-healing functions is obtained by taking polymerization of the three raw materials as main materials and self-polymerization of the ionic liquid and butadiene as auxiliary materials, so that the possibility of scattering and losing of fire evidences is reduced, meanwhile, the cycle use frequency of the buffer material is greatly increased, and the buffer material is low in cost, convenient to popularize and use and good in economic benefit.

The invention discloses a composite lubricant containing a porous covalent organic framework as well as a preparation method and application of the composite lubricant. The composite lubricant comprises a porous covalent organic framework material and an ionic liquid, the ionic liquid is 1-butyl-3-methylimidazolium thiocyanate, 1-ethyl-3-methylimidazolium tetrafluoroborate or 1-butyl-3-methylimidazolium hexafluorophosphate, and the porous covalent organic framework material is a porous covalent organic framework material. According to the invention, a porous covalent organic framework (COF) is added into ionic liquid (ILs) as an additive, the ionic liquid provides an ideal ionic microenvironment or is used as an active substance to endow the organic framework with extra functions such as conductivity, fluidity and dispersibility, and the COF can also improve the corrosivity of the ionic liquid.

The invention discloses a tin-based perovskite material, a thin film and a preparation method and application thereof, and belongs to the technical field of perovskite materials, a hexafluorophosphate additive is adopted, and the additive and a tin-containing raw material (especially a perovskite precursor) have a synergistic effect, so that the defects of the tin-based perovskite material can be improved. The hexafluorophosphate additive has reducibility and can interact with Sn < 2 + > in the tin-based perovskite, oxidation of Sn < 2 + > in the tin-based perovskite is effectively inhibited, meanwhile, the crystallization kinetics of growth of the tin-based perovskite material can be regulated and controlled, the crystallization quality of the tin-based perovskite thin film is improved, and the performance of the tin-based perovskite thin film is improved. The defects that a tin-based perovskite thin film is difficult to form, the efficiency is low, and the stability of tin-based perovskite is poor are overcome, and then the stability and the photoelectric property of the tin-based perovskite material are improved.

The invention aims to provide a preparation method and application of a blue-light CsPbBr3 perovskite quantum dot, and belongs to the technical field of quantum dot preparation. According to the method, 1-ethyl-3-methylimidazolium hexafluorophosphate molecules are introduced to the surfaces of the quantum dots by using a heterogeneous ligand exchange strategy, and passivation of surface defects of the quantum dots and inhibition of Auger recombination are realized at the same time, so that the optical performance and stability of the quantum dots are improved, and the photoluminescence quantum yield is increased from 78% to 92%; according to a blue light emitting diode prepared based on the CsPbBr3 quantum dot, the maximum external quantum efficiency of 20.02% is achieved under the brightness of 6441 cd / m < 2 >, and the external quantum efficiency of nearly 19% is still achieved under the high brightness of nearly 10000 cd / m < 2 >; under the initial brightness of 106 cd / m < 2 >, the running half-life period of about 700 minutes is obtained; the preparation of the blue-light perovskite quantum dot light-emitting diode with high external quantum efficiency, high brightness, long service life and low efficiency roll-off is realized.

The invention discloses an extraction head and a method for detecting organochlorine pesticides in water by using the extraction head. According to the preparation method, 4-hydroxycarbazole is taken as a functional monomer for electro-polymerization, (benzotriazole-1-yloxy) dipyrrolidine carbon hexafluorophosphate ionic liquid (IL) is taken as a doping medium, and the composite extraction coating is obtained in an electrochemical co-deposition mode. The polymerization 4-Hydroxycarbazole-IL (HBPyU) with the ionic liquid concentration of 25 mu g / mL, the salt solution of 35% saturated sodium chloride solution, the stirring rate of 600 r / min, the extraction temperature of 50 DEG C and the extraction time of 30 min is used as an optimal extraction head, and organochlorine pesticides Hepache and Quintozene in water are analyzed and detected. Therefore, according to the technical scheme, compared with an extraction head only provided with a monomer, the coating material added with the ionic liquid has the best extraction capacity on an analyte, and the beneficial effects of high efficiency and high sensitivity are achieved.

The invention discloses silanized hyaluronic acid as well as a synthesis method and application thereof, and belongs to the technical field of biological material synthesis. The synthesis method of the silanized hyaluronic acid comprises the following steps: dissolving hyaluronic acid in a bio-based solvent to form a hyaluronic acid solution; mixing the hyaluronic acid solution with an amino-containing silane coupling agent, and carrying out a first reaction to form an intermediate reactant; mixing the intermediate reactant with a catalyst, and carrying out a second reaction to form silanized hyaluronic acid; the bio-based solvent is glycerol and / or hexafluorophosphate ionic liquid; the catalyst is an ionic liquid loaded metal oxide. The invention provides the environment-friendly and efficient synthesis method of the silanized hyaluronic acid, and the synthesized silanized hyaluronic acid has higher silicon content, is a water-soluble macromolecule and can meet the application requirements of the silanized hyaluronic acid in cosmetics, health care products and medical auxiliary materials.

Disclosed is a nonaqueous electrolyte solution for a secondary battery, the nonaqueous electrolyte solution containing a hexafluorophosphate, a compound represented by formula (1), and a nonaqueous solvent.　(1): FSO2NHR1 [In formula (1), R1 represents a hydrogen atom or an optionally substituted hydrocarbon group having 1 to 18 carbon atoms.]

The invention discloses a preparation method and application of a compound with a cold sensing regulation effect, which comprises the following steps: dissolving tryptophan in methanol, adding concentrated sulfuric acid, esterifying the acid to protect carboxyl so as to obtain tryptophan methyl ester, dissolving the obtained tryptophan methyl ester and aromatic carboxylic acid substances in N, N-dimethylformamide, and reacting to obtain the compound with the cold sensing regulation effect. The method comprises the following steps: catalyzing 2-(7-azabenzotriazole)-N, N, N ', N'-tetramethylurea hexafluorophosphate and N, N-diisopropylethylamine, dissolving a catalyzed product in ethanol (98%), adding into a NaOH solution, stirring, carrying out rotary evaporation treatment, slowly dropwise adding a 0.5 mol / L hydrochloric acid solution, adjusting the pH value of a reaction system to 3-4, and finally obtaining the tryptophan derivative compound with the yield of 70%. The invention provides a potential medicine for improving the working ability and cold injury in the cold environment for people living and working in the cold environment, and is developed into a medicine for effectively improving neuropathic pain diseases in the cold environment.

A degassing device and method for liquid lithium hexafluorophosphate, the degassing device comprising: a scraper evaporator (E201), a post-degassing concentration and collection tank (V301), a condenser (E202), a solvent collection tank (V303) and a vacuum pump (P103), wherein the scraper evaporator (E201) is connected to a conveying line for raw liquid lithium hexafluorophosphate. The raw liquid lithium hexafluorophosphate is heated by the scraper evaporator (E201) and undergoes a rotational centrifugal force of same; thus, part of the liquid is vaporized, and the vaporized material is conveyed into the condenser (E202). The unvaporized liquid is conveyed to the post-degassing concentration and collection tank (V301). An output end of the condenser (E202) is connected to the solvent collection tank (V303), and a gas-phase output end of the solvent collection tank (V303) is connected to the vacuum pump (P103). Thus, an efficient and excellent degassing effect is achieved, it is ultimately ensured that the content of hydrogen chloride in liquid lithium hexafluorophosphate after a degassing treatment is less than 10 ppm, and the performance of the liquid lithium hexafluorophosphate when used as a component of an electrolyte in lithium ion batteries is also ensured.

The invention discloses a catalyst for synthesizing 1, 3-dioxane-2-ketone as well as a preparation method and application of the catalyst. The catalyst is prepared from the following components in percentage by mass: 60wt%-90wt% of a component A, 5wt%-20wt% of a component B and 5wt%-30wt% of a component C, wherein the component A is one or more of N, N-dimethyl formamide, N, N-dimethylacetamide, N, N-diethyl formamide and urea, and the component B is one or more of N, N-dimethyl formamide, N, N-dimethylacetamide, N, N-diethyl formamide and urea; the component B is one or more of lithium carbonate, sodium carbonate, potassium carbonate, cesium carbonate, calcium carbonate and magnesium carbonate; and the component C is 1-butyl-3-methylimidazolium tetrafluoroborate and / or 1-butyl-3-methylimidazolium hexafluorophosphate, and the component C is 1-butyl-3-methylimidazolium hexafluorophosphate. According to the present invention, the components of the catalyst have the mutual synergistic promotion effect, the reaction substrate can be adsorbed and activated, the reaction condition is mild, the product yield is high, the catalyst can be recovered and regenerated, and the environmental pollution is low.

The present invention relates to the technical field of security features comprising markers by means of surface enhanced Raman spectroscopy (SERS) and the detection thereof. Furthermore, the present invention relates to the field of UV-Vis curable security inks comprising SERS tags, said inks being used for printing security features on substrates, in particular security documents or articles, wherein the ink comprises i) one or more surface enhanced Raman spectroscopy (SERS) tags, ii) one or more vinyl ether-containing compounds, iii) one or more cationic radiation-curable compounds different from the one or more vinyl ether-containing compounds of ii), and iv) one or more cationic photoinitiators that are hexafluorophosphates.

The present application relates to the technical field of lithium ion battery, especially to an electrolyte and a lithium ion battery. The electrolyte provided by the present application comprises a lithium salt, a solvent, a diluent and an additive; the solvent comprises a compound containing at least one ester bond and / or at least one ether bond; the diluent comprises a fluorinated aromatic ether; and the additive comprises a compound containing a hexafluorophosphate group. The electrolyte of the present application uses a compound containing an ester bond and / or an ether bond as a solvent, so that it has excellent oxidation resistance and reduction capacity; the addition of a fluorinated aromatic ether makes it easier to form a SEI film rich in LiF on the lithium surface; the compound containing a hexafluorophosphate group can be preferentially decomposed on the surface of the positive and negative electrodes, thereby improving the interface stability, hindering the decomposition of the electrolyte, easily forming a passivation layer on the surface of the positive electrode, and inhibiting the corrosion effect of the lithium salt on the current collector at high voltage; thereby meeting the use requirements of the high-nickel-lithium metal system battery of the high-voltage system.

The invention relates to a liquid electrolyte for an alkali metal (M) ion secondary battery. The electrolytes disclosed herein comprise a non-aqueous solvent, an alkali metal (M) salt other than an alkali metal hexafluorophosphate (MPF6), and water present in an amount of 20 to 5000 ppm based on the total amount of the electrolyte. The electrolyte is free of alkali metal (M) hexafluorophosphate. Methods of making the liquid electrolyte, electrochemical cells comprising the liquid electrolyte, and electrochemical energy storage devices comprising the electrochemical cells are also disclosed. Also disclosed is the use of a composition comprising a non-aqueous solvent and an alkali metal (M) salt other than an alkali metal (M) hexafluorophosphate (MPF6), said composition being free of an alkali metal (M) hexafluorophosphate MPF6, as a water-insensitive liquid electrolyte.