88 results about "Hydrofluoroether" patented technology

The invention discloses a lithium ion battery electrolyte, a preparation method and application. The lithium ion battery electrolyte comprises a lithium salt and an organic solvent, wherein the lithium salt comprises a combination of at least two of lithium hexafluorophosphate, lithium difluoro bis (oxalato) phosphate, lithium bis (fluorosulfonyl) imide and lithium bis (oxalato) borate, and the organic solvent comprises 30 wt%-50 wt% of hydrofluoroether, 10 wt%-30 wt% of acetate and 20 wt%-60 wt% of carbonate. The lithium ion battery electrolyte provided by the invention can keep the diaphragm structure complete, realizes filling of pores with lithium salt, and reduces the permeability of the diaphragm, thereby controlling possible shrinkage of the diaphragm in a temperature change process under a low-temperature or high-temperature condition; the crosstalk problem caused by gas penetration between the positive electrode and the negative electrode is inhibited, and the battery prepared by utilizing the lithium ion battery electrolyte provided by the invention has good cycle performance and rate capability under a low-temperature condition and has relatively high safety under a high-temperature condition.

The invention belongs to the technical field of fluorine-containing fine chemical synthesis, and particularly relates to an oxa-hydrofluoroether compound and a synthesis method and application thereof. The invention relates to an oxa-hydrofluoroether compound, the structure of the oxa-hydrofluoroether compound is shown as a formula (1): # imgabs0 #, in which Rf is F or CF3; r is methyl or ethyl; n is an integer from 1 to 3; according to the oxa hydrofluoroether compound disclosed by the invention, oxygen atoms are embedded into a fluorocarbon chain structure, so that fluorine-containing chain segments of hydrofluoroether are more diversified, and the structure is not limited by a perfluorocarbon chain structure any more; according to the oxa-hydrofluoroether compound, oxygen atoms play a role in reducing surface tension, and the more the oxygen atoms are, the lower the surface tension is; compared with other hydrofluoroether solvents, the hydrofluoroether solvent has higher permeability and better cleaning effect; according to the oxa-hydrofluoroether compound, on one hand, oxygen atoms are embedded into a fluorocarbon chain structure, and on the other hand, the fluorocarbon chain contains branched chains, so that the oxa-hydrofluoroether compound is easy to degrade, and the environmental friendliness is improved.

The invention provides a glass cleaning agent as well as a preparation method, application and a use method thereof, and relates to the field of cleaning agents. The glass cleaning agent is prepared from the following components in percentage by mass: 0.025 percent to 0.1 percent of a chelating agent, 0.5 percent to 2 percent of an efficient cleaning agent, 0.05 percent to 0.2 percent of an alkaline cleaning agent, 2.5 percent to 10 percent of isopropyl alcohol, 2.5 percent to 10 percent of acetone, 0.05 percent to 0.2 percent of a phosphorus flame retardant and 77.5 percent to 94.375 percent of deionized water, the chelating agent comprises citric acid; the efficient cleaning agent is prepared from FC-3060 hydrofluoroether; the alkaline cleaning agent comprises sodium carbonate. The components of the glass cleaning agent are all selected from environment-friendly materials, the influence on the environment is small, harmful smoke or pungent smell is not generated in the using process, and the health of operators and the safety of the working environment are guaranteed.

The invention provides a supercritical lithium metal battery electrolyte with electric field adaptability and application, and belongs to the technical field of lithium metal batteries. Comprising a lithium salt, a main solvent and a diluent, has the characteristic of adaptively stabilizing a lithium metal negative electrode under the action of an electric field, and is a supercritical state electrolyte obtained by dissolving the lithium salt in the main solvent to form a solution with the concentration being greater than or equal to 5 mol / L and diluting the solution with the diluent; the main solvent is at least one of chain ester, chain ether and siloxane, the diluent is hydrofluoroether, and the volume ratio of the main solvent to the diluent is 1: (0.5-20). The lithium metal negative electrode shows stable self-adaptive capacity under the action of an electric field, and formation of lithium dendrites is inhibited by promoting decomposition of anions at the negative electrode to form SEI rich in inorganic components, so that long-time stable circulation of a high-voltage lithium metal battery is realized.

The invention relates to a sodium ion battery and a phosphate flame-retardant electrolyte thereof. The electrolyte solution includes: a solvent including trimethyl phosphate (TMP) and hydrofluoroether; a sodium salt; and an additive containing sodium tetrakis (3, 5-bis (trifluoromethyl) phenyl) borate. The electrolyte is low in cost, high in safety, good in interface compatibility and excellent in electrochemical performance.

The invention discloses a flame-retardant electrolyte, a preparation method and application in a graphite cathode, the electrolyte comprises a lithium salt, an organic solvent and a film-forming additive, the organic solvent is a mixed solvent comprising fluorinated carboxylic ester and hydrofluoroether, the concentration of the lithium salt in the organic solvent is 2-6 mol / L, and the film-forming additive is lithium bis (oxalate) difluorophosphate. The electrolyte has the beneficial effects that the high-concentration lithium salt in the electrolyte not only ensures the ionic conductivity of the carboxylic ester-based electrolyte, but also forms a solvation structure rich in anions, so that the compatibility of the electrolyte and a graphite negative electrode is improved. The perfluoro solvent and the additive ensure that the SEI film is rich in inorganic components such as LiF, LixPOyFz and the like, and particularly the SEI film rich in LiF effectively improves the compatibility of the EDFA carboxylate-based electrolyte and a graphite negative electrode and the transmission property of interface Li < + >.

The invention belongs to the field of solid-state batteries, and particularly relates to a lithium metal battery, a high-voltage wide-temperature-range gel polymer electrolyte of the lithium metal battery, a preparation method of the high-voltage wide-temperature-range gel polymer electrolyte and application of the high-voltage wide-temperature-range gel polymer electrolyte. The high-voltage wide-temperature-range gel polymer electrolyte is prepared; the composite monomer comprises a monomer 1 and a monomer 2 in a weight ratio of (1-2): (1-2), the monomer 1 comprises a compound as shown in a formula 1 (1), and the monomer 2 comprises a compound as shown in a formula 2 (2); the basic electrolyte comprises a conductive lithium salt and an ester ether solvent, and the conductive lithium salt comprises LiPF6; the ester-ether solvent comprises an ester solvent, a fluorinated ester solvent and hydrofluoroether in a weight ratio of (4-5): (2-3): (2-3). The electrolyte disclosed by the invention can meet the application requirements of high pressure and wide temperature range, and the high-pressure, low-temperature and high-temperature cycling stability of the electrolyte is improved.

An object is to provide a method for producing a magnetic disk that employs a fluorine-based solvent which has a low global warming potential and in which solubility of a high-polarity perfluoropolyether compound is excellent. This object is achieved by a method for producing a magnetic disk, the method including the step of applying, to a magnetic disk substrate, a lubricant solution containing a lubricant and a hydrofluoroether having a 100-year global warming potential value of less than 1000 and having a structure represented by the following Formula (A):where: Ra represents F, CF2-Re, or CF3; Rb represents O-Rd or C(-Rf)3; Rc represents H, F, or CF3; Re and Rd each independently represent a hydrocarbon group which may be partially substituted by a fluorine atom and each have a main chain in which at least one carbon atom may be replaced by an oxygen atom; and Rfs each independently represent H, F, or a hydrocarbon group that may be partially substituted by a fluorine atom, and the hydrocarbon group that may be partially substituted by the fluorine atom has a main chain in which at least one carbon atom may be replaced by an oxygen atom.

The application discloses application of high-thermal-stability hydrofluoroether, and the high-thermal-stability hydrofluoroether has a structural formula of HCF2CF2CF2CF2CH2OCF2CF2H, and is used as a coolant for a cooler of a temperature control device in a semiconductor product processing process, and has the advantages that the high-thermal-stability hydrofluoroether with the specific molecular structure is used as the coolant for the cooler of the temperature control device in the semiconductor product processing process, the substance is compatible with most materials in a wide temperature range, has good thermal stability, chemical inertia and non-corrosiveness, is non-toxic in the use process, has good environmental and safety characteristics, has an ODP value of 0 and a very low GWP value, and the substance has excellent dielectric properties, low viscosity and high resistivity, and is especially suitable for a heat transfer fluid in a semiconductor wafer etching process.

Provided is a method for effectively reducing the concentration of a hydrofluoroether-olefin (HFEO) contained in a mixture comprising a hydrofluoroether (HFE) and the HFEO. This method for reducing the concentration of an HFEO is one in which the HFE is a compound (A) represented by formula (1) and the HFEO is a compound (B) represented by formula (2), the method comprising reacting the compound (B) contained in the mixture with a compound (C) which is any of an alcohol, chlorine, and hydrogen.　(1): R2-O-R1-O-R3 (2): R2-O-R1-O-R4 In formulae (1) and (2), R1 is a C1-C4 alkylene group, R2 and R3 are each independently a C2-C4 fluoroalkyl group, and R4 is a C2-C4 fluoroalkenyl group.

The application belongs to the technical field of lithium batteries, and provides a locally high-concentration ionic liquid modified electrolyte, a preparation method and application thereof.The ionic liquid modified electrolyte provided by the application takes a stachydrine ionic liquid and a diluent hydrofluoroether and / or fluorophosphate as a main body, adds specific cosolvents and lithium salts, well dissolves the stachydrine ionic liquid and the diluent, and forms a homogeneous phase.Compared with a traditional carbonate electrolyte, the ionic liquid modified electrolyte has high conductivity, low viscosity, a wide electrochemical window, non-flammability and non-volatility, and high lithium ion transference number;further used for assembling lithium batteries, still can maintain good charge and discharge capacity after running at different rates, has good cycle stability and service life, lithium battery cycle number is greater than or equal to 80 cycles, and even can reach 220 cycles, average coulombic efficiency is greater than or equal to 96.5%, and even can reach 98.6%.

A process for making hydrofluoroethers, the process comprising: •A) providing a mixture comprising one more polar aprotic organic solvents having a boiling point measured at 1 atm (1.01 bar) of from 60° C. to 170° C. and one or more chemical compounds carrying at least one —OH group which is part of an alcohol or of a phenol group, and •B): reacting said one or more chemical compounds carrying at least one —OH group with one or more fluorinated olefin in the presence of a basic catalyst thus providing a reacted mixture comprising one or more hydrofluoroethers.

The application provides a fire-retardant immersion type cooling liquid for high-multiplicity lithium iron phosphate battery packs and a preparation method thereof, raw materials of the fire-retardant immersion type cooling liquid include, in percentage by weight, 85-95% fluorine compound base carrier, 5-15% phosphorus-nitrogen composite fire retardant; the fluorine compound base carrier contains low-boiling-point hydrofluoroether, branched-chain perfluoropolyether and h-BN nanosheet, and the fire retardant is a microencapsulated ammonium polyphosphate and melamine cyanurate compound system. The preparation is completed through carrier mixing, nanosheet composite dispersion, fire retardant compounding and vacuum degassing. The application realizes high heat dissipation, high insulation, UL94 V-0 level halogen-free fire retardancy and more than 6 months of stable performance, solves problems such as high viscosity, slow heat dissipation, poor fire retardancy, environmental protection hidden danger and insufficient stability of traditional cooling liquids, and adapts to the safety cooling demand of high-multiplicity lithium iron phosphate battery packs.

The invention belongs to the technical field of lithium battery electrolytes, and relates to a wide temperature range electrolyte for a lithium metal battery, a preparation method and application thereof, the electrolyte comprises a lithium salt, N, N dimethyl-trifluoromethyl sulfonamide, an ether cosolvent, a hydrofluoroether diluent and a film-forming additive; the ether cosolvent comprises ethylene glycol dimethyl ether, ethylene glycol diethyl ether, cyclopentyl methyl ether, tetrahydrofuran and 2-methyltetrahydrofuran; the hydrofluoroether diluent comprises the following components: 1, 1, 2, 2-tetrafluoroethyl-2, 2, 3, 3-tetrafluoropropyl ether, 1, 1, 2, 2-tetrafluoroethyl-2, 2, 2-trifluoroethyl ether, and 2, 2, 2-trifluoroethyl ether, and the hydrofluoroether diluent comprises the following components: 1, 1, 2, 2-tetrafluoroethyl-2, 2, 3, 3-tetrafluoropropyl ether, 1, 1, 2, 2-tetrafluoroethyl-2, 2, 2-trifluoroethyl ether; the film-forming additive comprises lithium nitrate, vinylene carbonate and fluoroethylene carbonate; the working temperature range of the electrolyte is-40-60 DEG C, negative ions can be promoted to enter a lithium ion solvation sheath, construction of inorganic component-rich SEI in a wide temperature range is realized, and the wide temperature range cycle stability of the battery is improved.

The present invention relates to processes for producing hydrofluoro(ether)olefins by the dehydrohalogenation of a perfluoroalkyl(ether)halide in an aqueous alkali metal hydroxide solution with an oxygen-containing catalyst.

The invention discloses an electronic liquid seal flame-retardant material and application thereof, the material comprises a fluorine-containing polymer, a rheology modifier and a functional nano-material in a mass ratio of (70-99.5): (0-20): (0-10); wherein the fluorine-containing compound is one or more of perfluoroether, perfluoroamine, perfluoroketone and hydrofluoroether; the rheology modifier is one or more of polytetrafluoroethylene, fatty acid, fatty acid salt, polyurea and hydrocarbon wax; the functional nano material is one or more of silicon oxide, aluminum oxide, aluminum hydroxide, magnesium hydroxide, hydrotalcite, clay and calcium carbonate. When the electronic liquid seal flame-retardant material is used for liquid seal of electronic devices and systems, flame-retardant and explosion-proof effects can be achieved.

This invention relates to the field of coating technology, specifically to an anti-corrosion electronic-grade coating agent and its preparation method. The anti-corrosion electronic-grade coating agent, by weight, comprises the following raw materials: 5-8 parts acrylate, 10-20 parts fluorinated acrylate, 9-11 parts fluorosilicone resin, 0.6-2 parts coupling agent, 0.06-1 part initiator, and 80-130 parts hydrofluoroether. The coating agent prepared by this invention exhibits excellent corrosion resistance, high adhesion, good insulation, and is safe to operate without a flash point.

The invention provides a preparation method and application of perfluorosulfonate. The structural formula of perfluoroether sulfonate is CF2 = CFOCF2CF2SO3M, and M = Li, Na, K or Ca; the preparation method comprises the following steps: adding alkoxide and a hydrofluoroether solvent into a cyclic compound as shown in a formula I in # imgabs0 # to obtain a reaction solution, and heating the reaction solution to obtain CF2 = CFOCF2CF2SO3M. According to the preparation method of the perfluorosulfonate, provided by the invention, the selectivity of the alkoxide and cyclic combination reaction is improved, so that the generation of byproducts is reduced, and the reaction yield is improved.

This application discloses a lithium-ion battery electrolyte, its preparation method, and its application. The provided lithium-ion battery electrolyte comprises a lithium salt and an organic solvent; wherein the lithium salt comprises a combination of at least two selected from lithium hexafluorophosphate, lithium difluorobis(oxalato)phosphate, lithium difluorosulfonylimide, and lithium di(oxalato)borate; and the organic solvent comprises 30wt%-50wt% hydrofluoroether, 10wt%-30wt% acetate, and 20wt%-60wt% carbonate. The provided lithium-ion battery electrolyte maintains the integrity of the separator structure, enables lithium salt to fill pores, and reduces separator permeability, thereby controlling possible separator shrinkage during temperature changes at low or high temperatures; it also suppresses crosstalk between the positive and negative electrodes caused by gas penetration, enabling batteries prepared using the provided lithium-ion battery electrolyte to exhibit good cycle performance and rate performance at low temperatures, and high safety at high temperatures.

The present invention relates to a cleaning agent composition which is excellent in cleaning property and does not corrode plastic substrates such as polycarbonate and polystyrene which are not resistant to solvents. The cleaning agent composition of the present invention comprises the following (A) to (C) components, the mass ratio of the (A) component and the (B) component being 11:89 to 99:1, (A) cis-1-chloro-3,3,3-trifluoropropene, (B) one or more compounds selected from the group consisting of hydrofluoroolefins, hydrofluorocarbons and hydrofluoroethers which do not contain a chlorine atom, and (C) a hydrocarbon solvent.

Provided is a cleaning solution having a low global warming potential value and having particle removal properties equal to or higher than those of conventional hydrofluoroethers. The present invention relates to a cleaning solution for removing particles, the cleaning solution containing a hydrofluoroether, the hydrofluoroether being a compound represented by general formula (1).

This application discloses a battery cell, a battery, and an electrical device. One embodiment of the battery cell includes a negative electrode and an electrolyte. The negative electrode includes a current collector stacked on top of each other and an active material film containing active material particles, the active material particles being carbonaceous materials. The electrolyte includes a lithium salt, an organic solvent, and additives. The additives include a first additive and a second additive. The first additive includes a hydrofluoroether compound. The second additive has the general formula NO3-R1, where R1 includes substituted or unsubstituted carbonaceous heterocycles. The first additive in the electrolyte can reduce lithium-ion solvation. Further combined with the second additive, it is reduced and decomposed on the surface of the carbonaceous material to generate lithium nitrogen oxides, forming a dense, stable SEI film with high inorganic content on the surface of the carbonaceous material. This forms a stable interface layer between the carbonaceous material and the organic solvent, reducing side reactions between the carbonaceous material and the electrolyte, reducing lithium consumption, and improving cycle performance.

To provide a heat transfer medium circulation system that uses hydrofluoroether (HFE) as a heat transfer medium and can prevent a heat transfer medium containing an acid from flowing through a circulation flow path including a temperature control target portion.SOLUTION: A heat transfer medium circulation system includes a circulation flow path 3 for circulating a heat transfer medium containing HFE to a temperature-control target portion 1, and a deoxidation unit 4 for deoxidizing the heat transfer medium diverted from the circulation flow path 3 and causing the heat transfer medium to merge with the circulation flow path 3.SELECTED DRAWING: Figure 1

The invention belongs to the technical field of fluorine chemical double-carbon emission reduction, and particularly relates to a method for synthesizing hydrogen-containing fluoroether through electro-catalysis continuous decarboxylation of perfluorocarboxylic acid and salt thereof. According to the method, a perfluorinated proton membrane is used as a diaphragm, an electrolytic cell is divided into an anode and a cathode, perfluorinated carboxylic acid and salt thereof are used as reaction raw materials, a mixture of water and a polar aprotic solvent is used as a solvent mother solution, and the solvent mother solution and the reaction raw materials are mixed and then continuously introduced into the anode side of the electrolytic cell for electro-catalysis; the effluent flowing out from the anode side is subjected to rectification separation, light components containing the hydrogen-containing fluoroether and water are distilled out, a hydrogen-containing fluoroether product is obtained through liquid separation, meanwhile, the separated water is recycled and mixed with the residual liquid obtained after rectification to form recycled mother liquor, recycling of the mother liquor is achieved, and recycling of the hydrogen-containing fluoroether product is achieved. And continuously supplementing equimolar perfluorocarboxylic acid into the recycled mother liquor according to the output of the product, thereby realizing the continuous production of the hydrogen-containing fluoroether. According to the method, the output of waste liquid is reduced, meanwhile, hydrogen is co-produced on the cathode side, and the utilization efficiency of energy is improved.

The application provides a preparation method of solid electrolyte powder and a lithium ion battery. The preparation method comprises the following steps: step S1, performing preliminary crushing on a solid electrolyte material to obtain pre-milling powder; step S2, dispersing the pre-milling powder in a solvent and wet milling to form a slurry; and step S3, removing the solvent in the slurry to obtain the solid electrolyte powder. The solvent is a composite solvent, and the composite solvent comprises a hydrofluoroether and an ester compound. By using the composite solvent comprising the hydrofluoroether and the ester compound to wet mill the solid electrolyte material, the dispersion effect of the solid electrolyte powder is significantly improved, the solid electrolyte powder with a smaller particle size is obtained, meanwhile, the ionic conductivity of the solid electrolyte powder still maintains a high level, and the cycle stability of the battery is significantly improved.

The application discloses a method for separating inert perfluoropolyether and active perfluoropolyether carboxylate by ion complex extraction, which comprises the following steps: dissolving a mixture containing inert perfluoropolyether and active perfluoropolyether carboxylate in a fluorine-containing solvent, contacting the mixture with an ion complex extraction agent, collecting the ion complex extraction agent phase after extraction equilibrium to obtain enriched active perfluoropolyether carboxylate, and collecting the fluorine-containing solvent phase to obtain enriched high-purity inert perfluoropolyether; the active perfluoropolyether carboxylate is perfluoropolyether with a carboxylate end group; the fluorine-containing solvent is one or more of a hydrofluoroether, a fluorine-containing ester, a perfluorinated or partially fluorinated alkane, and a perfluorinated or partially fluorinated aromatic solvent; and the ion complex extraction agent is an aqueous solution containing one or more of an ionic compound, a polyelectrolyte, and a guanidine compound.

The invention belongs to the field of fluorine chemical industry, and particularly relates to unsaturated hydrofluoroether and a synthetic method thereof.The synthetic method comprises the steps that an alcohol compound is added into a hexafluoropropylene oligomer, and the unsaturated hydrofluoroether is prepared under the action of a basic catalyst; preferably, the hexafluoropropylene oligomer is one or a mixture of a hexafluoropropylene dipolymer and a hexafluoropropylene tripolymer. According to the technical scheme, the hexafluoropropylene oligomer (dimer or trimer) is used as a raw material, the organic base is used as a catalyst and an acid-binding agent, the hexafluoropropylene oligomer and alkyl alcohol or fluorine-containing alcohol react in a micro-channel to synthesize the unsaturated hydrofluoroether, the cost is low, the product yield is high, and a solvent is not needed for assisting dissolution; as a preferable form, an auxiliary agent is added to promote mixing of the raw materials, so that the reaction yield is further improved.

The invention belongs to the technical field of flux cleaning liquid, and particularly relates to a preparation method of cleaning liquid for flux cleaning. The preparation method comprises the following steps: preparing a component A: adding 38-43 parts by weight of C10-C13 isoalkane, 15-19 parts by weight of 2-methylpentane and 6-8 parts by weight of ethyl acetate into a stirring kettle, and stirring for 10-30 minutes at normal temperature at 200-400 rpm; sequentially adding 10-15 parts by weight of modified lauryl alcohol polyoxyethylene ether and 5-7 parts by weight of an alcohol ether compound, and continuously stirring for 10-30 minutes; adding 0.5-0.7 part by weight of methylbenzotriazole, 0.3-0.5 part by weight of a fluorocarbon surfactant and other assistants, and stirring at a rotating speed until the assistants are completely dissolved to obtain a component A; 83-88 parts by weight of a hydrofluoroether compound and 10-20 parts by weight of a fluorinated solvent are added into the stirring kettle, stirring is conducted at the normal temperature at 200-400 rpm till complete dissolution is achieved, and the component B is obtained; and uniformly mixing the component A and the component B according to a mass ratio of 2: 1 to 4: 1. Through the compounding proportion of the component A and the component B, the system can be stabilized within the tolerable temperature of the chip packaging piece, and the cleaning effect and the anti-deformation requirement are both considered.

The invention provides a hydrofluoroether purification method, and belongs to the technical field of hydrofluoroether preparation. According to the method, the anhydride reacts with the impurities in the hydrofluoroether crude product, so that three impurities, namely an aprotic polar solvent, water and alcohol or phenol with poor water solubility, in the hydrofluoroether crude product can be removed at the same time, acid ester with a high boiling point is generated, subsequent simple rectification separation is facilitated, and the purity of the hydrofluoroether is improved. The purification method does not need the conditions of low temperature, no water, no oxygen and the like, is relatively low in cost, mild in reaction condition, short in reaction time, simple to operate, green, environment-friendly, safe, reliable and low in equipment requirement, and the purity of the hydrofluoroether obtained after treatment is 99.95% or above.

The invention provides fluorine-containing electronic cooling liquid based on modified silicone oil, a preparation method and application, and relates to the field of phase change cooling liquid formulas, the cooling liquid comprises a component A and a component B, the component A is modified silicone oil, the component A accounts for 10-80% of the volume fraction of the fluorine-containing electronic cooling liquid, the component B is hydrofluoroether, and the component B accounts for 20-90% of the volume fraction of the fluorine-containing electronic cooling liquid; and n1 + n2 is equal to 50-70. According to the fluorine-containing electronic cooling liquid based on the modified silicone oil, the preparation method and the application, the use amount of an electronic fluorinated liquid is reduced, the cost can be effectively reduced, and the fluorine-containing electronic cooling liquid is more environment-friendly and has good heat conduction capability and phase change heat dissipation capability.