166 results about "Fluorinated ether" patented technology

This slurry for a positive electrode contains: a positive electrode active material containing sulfur; a sulfide-based solid electrolyte; a binder; a first solvent; and a second solvent. The first solvent is one or more compounds selected from fluorinated ethers and fluorinated alkanes. The second solvent is one or more solvents selected from solvents in which the values of the dispersion parameter δd, the polarity parameter δp, and the hydrogen bond parameter δh in Hansen solubility parameters (HSP values) satisfy the ranges 14.8 ≤ δd ≤ 17.5, 1.0 ≤ δp ≤ 7.0, and 1.0 ≤ δh ≤ 7.0, respectively.

Described herein are lithium-metal rechargeable electrochemical cells comprising a lithium-metal negative electrode, a positive electrode, and a liquid electrolyte. The liquid electrolyte comprises a core mixture and a diluent. The diluent comprises a fluorinated ether. The core mixture comprises a set of salts and a set of solvents. The set of solvents comprises a pyrrolidinium-containing ionic liquid and a molecular solvent. The molecular solvent is a non-fluorinated ether, for example including but not limited to 1,2-dimethoxyethane. In some examples, the electrolyte further comprises an electrolyte additive, for example including but not limited to tris(trimethylsilyl)phosphate. In some examples, the set of salts comprises one or more imide-containing lithium salts. In some examples, the set of salts comprises lithium bis(fluorosulfonyl)imide and an additional salt and the mole fraction of lithium bis(fluorosulfonyl)imide in the set of salts is 0.5 or greater.

Embodiments relate to an electrolyte composition including a cyclic fluorinated ether diluent configured to configured to control reactions between a metal anode of a metal ion battery and the electrolyte composition. Embodiments further relate to a solid electrolyte interphase (SEI) bilayer formed on a surface of the metal anode and to a metal ion battery including the cyclic fluorinated ether diluent and / or the SEI bilayer.

An anion exchange ionomer is disclosed that contains a fluorinated, ether-free backbone, and a fluorinated ether based quaternary ammonium functional group. The novel polymer has improved chemical and mechanical stability as compared to the state-of-the-art materials for incorporation in anion exchange membrane. The disclosed anion exchange ionomer may be incorporated into an anion exchange membrane and used in electrochemical applications.

The present invention pertains to an anode-less lithium ion battery comprising a) a cathode comprising a cathode current collector and a cathode electro-active material on the cathode current collector; b) an anode current collector; c) a liquid electrolyte composition between the a) cathode and the b) anode current collector; and d) a separator, wherein the c) liquid electrolyte composition comprises i) at least 70% by volume (vol %) of a solvent mixture with respect to the total volume of the electrolyte composition, comprising at least one fluorinated ether compound and at least one non-fluorinated ether compound, and ii) at least one lithium salt.

Lithium-magnesium alloy anodes and fluorinated ether electrolytes for lithium-sulfur batteries. The lithium-magnesium alloy anodes include about 90 wt% lithium and 10 wt% magnesium. The lithium-magnesium alloy anodes include at least one anode protective coating. The electrolyte includes about 0.4M LiTFSi and about 2 wt% LiNO3 in fluorinated ether solvents.

An electrolyte includes a salt, a first fluorinated diether having a degree of fluorination of 10% to 25%, and a second fluorinated ether having a degree of fluorination of 40% to 100%, wherein the degree of fluorination is determined by dividing a total number of carbon atoms in the first fluorinated diether or the second fluorinated ether, which is substituted with at least one fluoro by a total number of carbon atoms in the corresponding first fluorinated diether or the second fluorinated ether, and wherein the first fluorinated diether and the second fluorinated ether have a volume ratio of 1:4 to 4:1.

The application provides a kind of sodium ion battery with flame-retardant electrolyte, it includes the following components: base electrolyte and functional additives;Wherein, the base electrolyte includes solvent and sodium salt;The solvent includes main solvent and optional secondary solvent;The sodium salt includes main sodium salt and optional secondary sodium salt;The main solvent is phosphorus-containing flame-retardant solvent, the secondary solvent is selected from at least one of carbonate solvent, carboxylic acid ester solvent and ether solvent of non-fluorinated ether;The molar ratio of the phosphorus-containing flame-retardant solvent and sodium salt is 4.2-17:1;The mass fraction of the main sodium salt in sodium salt is 70%-100%;The volume fraction of the main solvent in the solvent is 80%-100%;The mass fraction of the functional additives in the electrolyte is greater than 0 and less than or equal to 5%.The application also provides a kind of sodium ion secondary battery, which includes positive electrode material, negative electrode material and the sodium ion battery with flame-retardant electrolyte of the application.The electrolyte of the application is low in cost, high in safety, and can be compatible with carbon negative electrode.

The purpose of the present invention is to improve the life of a battery using a negative electrode comprising a metal by reducing the amount of gas generation, reducing the resistance, and reducing the amount of metal elements such as Mn and Ni deposited in a positive electrode in the negative electrode. A secondary battery having a liquid electrolyte and a negative electrode in which a fluoropolymer is laminated on a layer containing a metal, the secondary battery being characterized in that: the metal is at least one type selected from the group consisting of lithium, sodium, magnesium and zinc; the fluoropolymer is a copolymer having a vinylidene fluoride unit (A) and a structural unit (B) of at least one monomer selected from the group consisting of tetrafluoroethylene, trifluoroethylene, chlorotrifluoroethylene, a monomer represented by general formula (1), a monomer represented by general formula (2), and a monomer represented by general formula (3), and the liquid electrolyte contains a fluorinated ether. [chemical formula 1] # imgabs0 # [chemical formula 2] # imgabs1 # [chemical formula 3] # imgabs2 #

The invention discloses a lithium metal battery electrolyte and a preparation method and application thereof, and belongs to the technical field of new energy materials. The lithium metal battery electrolyte provided by the invention is prepared from the following raw materials: main salt, auxiliary salt, a solvent and a diluent, the main salt comprises at least one of LiFSI and LiTFSI; the auxiliary salt comprises at least one of LiDFOB and LiBF4; the diluent comprises at least one of fluoro-ether, fluoro-aromatic hydrocarbon and fluoro-aromatic ether; the molar ratio of the main salt to the auxiliary salt is (1-1000): 1; the ratio of the sum of the amount of substance of the main salt and the auxiliary salt to the amount of substance of the solvent is 1: (1-9); the molar ratio of the solvent to the diluent is 1: (1-4). According to the lithium metal battery electrolyte provided by the invention, corrosion of the electrolyte to a current collector, a steel shell and the like can be effectively avoided, and the cycle performance of the lithium metal battery can be remarkably improved. The invention also provides a preparation method and application of the lithium metal battery electrolyte.

The invention relates to the technical field of membrane materials, in particular to an asymmetric PMP hollow fiber oxygenation membrane and a preparation method and application thereof. The PMP hollow fiber oxygenation membrane comprises a main body, one side of the main body is an inner surface facing an inner cavity, and the other side of the main body is an outer surface; the outer surface has a compact surface; the initial foaming point of hydrofluoroether of the oxygenation membrane is not lower than 2MPa, and the porosity of the oxygenation membrane is 40%-70%; the oxygen flux of the oxygenation membrane is 1 ml / (cm < 2 > * min * bar)-2.5 ml / (cm < 2 > * min * bar), and the separation ratio alpha (CO2 / O2) of carbon dioxide to oxygen of the oxygenation membrane is not lower than 1.8; the oxygenation membrane has appropriate oxygen flux and a high separation ratio alpha of carbon dioxide and oxygen, the oxygenation capacity of the oxygenation membrane is truly and greatly improved, the difference between the oxygenation membrane and the lung of the human body is shortened, and the oxygenation membrane can be used as an artificial lung to provide arterial blood for the organs of the human body and enable the organs of the human body to still work normally.

To improve the battery life in a battery using a negative electrode made of a metal by decrease in the amount of gas generated, reduction in the resistance, reduction in the amount of metal elements in a positive electrode, such as Mn and Ni, precipitated in the negative electrode, and the like. A secondary battery comprising: a negative electrode having a fluoropolymer stacked on a layer containing a metal, and a liquid electrolyte, wherein the metal is at least one selected from lithium, sodium, magnesium, and zinc; the fluoropolymer is a copolymer comprising: a vinylidene fluoride unit (A), and a constituent unit (B) derived from at least one monomer selected from the group consisting of tetrafluoroethylene, trifluoroethylene, chlorotrifluoroethylene, a monomer represented by the general formula (1), a monomer represented by the general formula (2), and a monomer represented by the general formula (3); and the liquid electrolyte contains a fluorinated ether.

The application provides a fluorinated ether solvent and an electrolyte applied to energy storage batteries, especially lithium metal batteries, and the fluorinated ether solvent has a structure shown in formula I. By introducing at least one fluorine atom at both ends of an ether molecular chain, the fluorinated ether molecule has excellent salt solubility, the introduction of the fluorine atom can effectively reduce the electron cloud density of ether oxygen to improve the oxidation stability of the ether molecule, and excellent cycle stability of the high-voltage lithium metal battery is achieved; meanwhile, the locally strong polar fluorinated end group can interact with the cation of the salt to improve the ionic conductivity of the electrolyte, and the rapid charge-discharge performance of the high-voltage lithium metal battery is improved.

To provide a method capable of separating a monofunctional species, bifunctional species, etc. of a fluorinated ether compound having a polyfluoropolyether chain and a predetermined functional group in good yield and with high separation performance.A separation method for separating a compound represented by the formula (1) and a compound represented by the formula (2) from a mixture containing them by chromatography using a stationary phase and a mobile phase, wherein the mobile phase contains at least one type of specific solvent selected from a hydrofluoroolefin, a hydrochlorofluoroolefin, a chlorofluoroolefin, a cyclic hydrofluoroolefin, a cyclic hydrochlorofluoroolefin, a cyclic chlorofluoroolefin, a cyclic hydrofluorocarbon, a cyclic hydrochlorofluorocarbon, a cyclic chlorofluorocarbon and a perfluoroketone:A-(OX)m—O—Z—(R)n1  Formula (1)(R)n2—Z—(OX)m—O—Z—(R)n3  Formula (2)

A battery cell, a vehicle having a battery cell, and a method for forming a battery cell are provided. The battery cell includes: a cathode electrode including a cathode active material, where the cathode active material includes lithium sulfide (Li2S); an anode current collector serving as an anode electrode; solvating an ionic liquid (SIL) electrolyte; and a fluorinated ether diluent.

The invention relates to a lithium-sulfur secondary battery. The present invention provides a lithium-sulfur secondary battery comprising a positive electrode, a negative electrode, a separator, and an electrolyte. The positive electrode has an SC factor value of 0.45 or more. The electrolyte includes a solvent and a lithium salt, and the solvent includes a first solvent having a DV2 factor value of 1.7 or less and a second solvent as a fluorinated ether-based solvent.

The present disclosure provides an electrolyte and a lithium battery, the electrolyte comprising a fluorinated ether solvent; wherein the fluorinated ether solvent comprises at least one compound of formula (I): wherein R2 is a C4 alkylene or a C4 fluoroalkylene, wherein the number of fluorine atoms in the C4 fluoroalkylene is 1; R1 and R3 are each independently methyl or fluoromethyl, and the total number of fluorine atoms in R1 and R3 is 1-4; such an electrolyte can improve the cycle performance of a medium-nickel high-voltage lithium battery, reduce the direct current resistance growth rate under high-temperature storage conditions, and is conducive to long-term stable operation of the lithium battery.

A lithium ion battery includes a cathode including a cathode active material; an anode including silicon, a conductive carbon, lithium metal, or a combination of any two or more thereof; a separator; and an electrolyte including a lithium sulfonylimide salt, a dicarbonyl solvent, and a fluorinated ether solvent.

The invention discloses a new lithium battery material and a preparation method thereof, and relates to the technical field of lithium ion batteries, the new lithium battery material comprises an electrolyte, and the electrolyte comprises a solvent, a composite lithium salt and a functional additive; the solvent comprises fluoro-carbonate, ionic liquid and fluoro-ether; the composite lithium salt comprises lithium bis (fluorosulfonyl) imide (LiFSI), lithium bis (trifluoromethyl) sulfonyl imide (LiTFSI) and lithium bis (oxalato) borate (LiBOB); the functional additive comprises silane modified vinylene carbonate and tris (trimethylsilyl) phosphate. The composite lithium salt is matched with the functional additive and the solvent, so that the battery has relatively good discharge performance and cycle performance in a temperature range of-30 DEG C to 70 DEG C, and has good wide-temperature applicability.

The invention discloses a triazine perfluoroether rubber secondary vulcanization atmosphere control method and a product thereof, the triazine perfluoroether rubber secondary vulcanization atmosphere control method comprises the following steps: S1, triazine perfluoroether rubber subjected to primary vulcanization is subjected to secondary vulcanization in an inert gas atmosphere, the moisture content in the inert gas atmosphere is less than 20 ppmv, and the product is subjected to secondary vulcanization; the vulcanization temperature is 275 to 295 DEG C; and S2, replacement air is introduced, passivation is conducted in the air atmosphere, then the triazine perfluoroether rubber product is obtained, and the passivation temperature ranges from 275 DEG C to 295 DEG C. The method solves the problem of unstable product performance caused by improper atmosphere control in the secondary vulcanization process of the triazine perfluoroether rubber, the compression deformation rate of the perfluoroether rubber product prepared by the method is less than or equal to 10%, and the perfluoroether rubber product can be used in the high-end sealing fields of semiconductors, aerospace and the like.

The present invention relates to the use of a heat transfer composition comprising at least one refrigerant selected from the group consisting of halogenated hydrocarbons, perhalogenated hydrocarbons, fluorinated ketones, fluorinated ethers, and combinations thereof, and at least one dielectric fluid, said heat transfer composition having a volume resistivity greater than or equal to 10 6 Ω.cm at 25°C, for cooling devices, such as batteries of electric or hybrid vehicles.

Disclosed is a lithium secondary battery (10) including a positive electrode (11), a negative electrode (12), and a non-aqueous electrolyte having lithium ion conductivity. In the negative electrode (12), lithium metal is deposited during charging, and the lithium metal is dissolved in the non-aqueous electrolyte during discharging. The non-aqueous electrolyte includes a solvent and a lithium salt. The solvent includes a non-fluorinated ether and a fluorinated cyclic monoether. The fluorinated cyclic monoether includes a cyclic structure having one ether bond. The lithium salt includes an anion of an oxalate complex.

The invention belongs to the technical field of lithium ion batteries, and particularly discloses an electrolyte for a high-rate lithium battery, the electrolyte is compounded by a solvent, a mixed lithium salt and an additive according to the mass percent of (80%-85%): (10%-15%): (5%-8%), the mixed lithium salt contains at least two lithium salts, the additive contains fluorinated ether, and the fluorinated ether contains at least one of the lithium salts. And the content of the fluorinated ether is 0.3%-0.5% of the total weight of the electrolyte. When the electrolyte is applied to the high-rate lithium battery, the charging and discharging efficiency of the high-rate lithium battery can be improved; the infiltration time of the electrolyte in the high-rate lithium battery is shortened, and the production efficiency of the high-rate lithium battery and the utilization rate of a production site are improved; in the formation (activation) process of the high-rate lithium battery, the formation current can be improved, the formation time can be shortened, the lithium battery manufacturing efficiency and the equipment utilization rate can be improved, and the production cost can be reduced; the invention also provides a preparation method of the electrolyte for the high-rate lithium battery, and the preparation method is simple and suitable for large-scale production and application.

To provide a method for efficiently purifying difluoromethane (HFC-32).SOLUTION: The present disclosure provides a method for producing purified difluoromethane (HFC-32), the method including an extractive distillation step of bringing a composition containing HFC-32 and a component X into contact with a solvent A to obtain a composition where an amount of the component X is reduced from the composition. The component X is at least one selected from the group consisting of pentafluoroethane (HFC-125), 1,1,1-trifluoroethane (HFC-143a), and dichlorodifluoromethane (CFC-12), and the solvent A is at least one of an amine and a fluorinated ether.SELECTED DRAWING: None

The application discloses a lithium ion battery. It comprises a positive electrode sheet, a negative electrode sheet, a diaphragm and an electrolyte; wherein the positive electrode sheet comprises a positive electrode active material, the positive electrode active material is lithium iron phosphate; the electrolyte comprises a fluorinated ether solvent, a cyclic carbonate and a vinylene carbonate; the fluorinated ether solvent is a compound shown in formula I; R2 and R3 are each independently selected from an alkylene or a fluorinated alkylene, and the total number of carbon atoms of R2 and R3 is 4, the total number of fluorine atoms in R2 and R3 is m, m>0; R1 and R4 are each independently methyl or fluorinated methyl, and the total number of fluorine atoms in R1 and R4 is n, n>1; and m+n=4; the content of the cyclic carbonate is 0.5wt%-7wt%, the percentage is the percentage of the mass of the cyclic carbonate in the mass of the electrolyte. The lithium ion battery provided by the application has good high-temperature cycle performance.

The invention relates to a process for preparing TEMTP through turntable extraction, and belongs to the technical field of organic annular peroxides. According to the process, a rotating disc reactor is adopted to integrate a photocatalysis-enzyme catalysis-chemical catalysis triple synergistic system, and the problem of cross inactivation of a catalyst is solved through partition design and nano sieve membrane isolation. A peptide-guided magnetic MOF photocatalytic carrier is adopted as a core, a Fe3O4 magnetic core of the peptide-guided magnetic MOF photocatalytic carrier achieves magnetic field driving, a ZIF-8 frame loads a TiO2-Ag photocatalyst, PNIPAM temperature-sensitive hydrogel fixes halogenase, and the intelligent enzyme control characteristic is achieved. According to the method, TEMTP is taken as a raw material, a reaction is carried out under light source irradiation and magnetic field driving, extraction and purification are carried out through fluoroether HFE-7500 at normal pressure, a high-purity TEMTP product is finally obtained, and unification of reaction efficiency, selectivity and green production is achieved.

The invention discloses a lithium carbon fluoride battery electrolyte, a preparation method thereof and a lithium carbon fluoride battery, and belongs to the technical field of lithium / carbon fluoride primary batteries. The lithium carbon fluoride battery electrolyte comprises a lithium salt and a monofluoro-substituted short-chain ether solvent. Compared with a non-fluorinated ether solvent, the monofluoroether solvent has good compatibility with a carbon fluoride positive electrode and a metal lithium negative electrode, so that the battery has good discharge performance. Compared with a polyfluoro-substituted ether solvent, the monofluoro substituent group (-CH2F) obviously improves the ionic conductivity of the lithium carbon fluoride battery electrolyte at low temperature, and meanwhile, the monofluoro substituent group (-CH2F) has weak solvation energy at low temperature, so that the discharge platform of the battery at low temperature is obviously improved, and the discharge capacity of the battery is improved.

A slurry for a positive electrode, which contains a sulfur-containing positive electrode active material, a sulfide-based solid electrolyte, a binder, a first solvent and a second solvent, and wherein: the first solvent is one or more types selected from the group consisting of fluorinated ethers and fluorinated alkanes; the second solvent is one or more solvents selected from the group consisting of solvents in which values of a dispersion term [delta] d, a polarity term [delta] p, and a hydrogen bond term [delta] h in Hansen Solubility Parameters (HSP values) satisfy 14.8 < = [delta] d < = 17.5, 1.0 < = [delta] p < = 7.0, and 1.0 < = [delta] h < = 7.0, respectively.

The invention discloses a fluorinated ether electrolyte capable of being used for a magnesium metal negative electrode. The fluorinated ether electrolyte comprises magnesium salt, an organic solvent and a fluorinated ether additive, the organic solvent is an ether compound, and the volume ratio of the ether compound in the electrolyte is 80%-97%; the preparation method of the electrolyte comprises the following steps: dissolving a magnesium salt in an ether compound under the protection of inert gas, and then adding a fluorinated ether additive to obtain the electrolyte, the fluorinated ether electrolyte is applied to the magnesium ion battery. According to the electrolyte, the ether compound is adopted as the organic solvent to effectively dissolve magnesium salt and weaken the reaction of the organic solvent and magnesium ions, so that an electrode / electrolyte interface is stabilized, a solid electrolyte interface film is formed at the interface by adopting the fluorinated ether additive, and the interaction between the magnesium ions and the ether organic solvent is weakened, so that the electrolyte is more stable. The cycling stability of the magnesium battery using the material is improved; the electrolyte is simple in preparation method and high in operability.

The object of the present invention is to provide a fluorinated ether composition with which a surface layer capable of imparting excellent water / oil repellency to the surface of a substrate and being excellent in abrasion resistance and weather resistance of the water / oil repellency, can be formed, and a coating liquid containing the fluorinated ether composition. The present invention further provides an article having a surface layer formed of the fluorinated ether composition, and a method for producing it.A fluorinated ether composition containing a specific fluorinated ether compound (1) having a poly(oxyfluoroalkylene) chain and having two silyl groups each having a hydrolyzable group bonded, at one terminal of the chain via an amide bond, and a specific fluorinated ether compound (2) having a poly(oxyfluoroalkylene) chain and having two silyl groups having a hydrolyzable group bonded, at both terminals of the chain via an amid bond.