147 results about "Fluorosulfonic acid" patented technology

An object of the invention is to provide a nonaqueous electrolytic solution which is capable of bringing about a nonaqueous-electrolyte secondary battery improved in initial charge capacity, input / output characteristics, and impedance characteristics. The invention relates to a nonaqueous electrolytic solution which comprises: a nonaqueous solvent; LiPF6; and a specific fluorosulfonic acid salt, and to a nonaqueous-electrolyte secondary battery containing the nonaqueous electrolytic solution.

The invention relates to a preparation method of difluoro-sulfimide and lithium difluoro-sulfimide, and belongs to the field of fluorine chemical synthesis. The preparation method comprises the steps that difluoro-sulfimide is obtained by adding fluoro-sulfoxide into a mixture of sulfamic acid or amino sulfonyl fluoride and fluorosulfuric acid for reacting and then subjected to recrystallization and filtration which are conducted at the temperature of minus 100 DEG C to 16 DEG C and / or reduced / normal-pressure distillation and purification which are conducted at the temperature of 60 DEG C to 169 DEG C; difluoro-sulfimide and a lithium-containing substance react in a solvent to obtain lithium difluoro-sulfimide, and then recrystallization, filtration and purification are conducted. According to the preparation method, difluoro-sulfimide can be prepared through one step, lithium difluoro-sulfimide is obtained through lithiation, and the prepared products can be purified; few steps are needed, the technology is simple, the process is easy to control, the requirement on production devices is low, the production efficiency, the product yield and the purity are high, and large-scale production and application can be achieved.

The present invention discloses a process for preparing self-humidifying composite proton exchange membrane for fueling battery comprising, adding heat dissolving all fluorosulfuric acid film into the low boiling point organic alcohol and water dissolvent, forming all fluorosulfuric acid resin solution, adding the carrying type catalyst and high boiling point organic dissolvent containing Pt into the all fluorosulfuric acid resin solution, dropping the solution on the surface of the organic porous membrane, heating up and storing under vacuum.

The invention relates to an ion liquid electrolyte containing bi-(fluorosulfonic acid)imine ion and iodine ion and application thereof to a dye sensitized solar battery. The electrolyte is a composition prepared from the bi-(fluorosulfonic acid)imine ion([N(SO2F)2]<->), iodine ion liquid and simple substance iodine which are evenly mixed according to the blending ratio, or the bi-(fluorosulfonic acid)imine ion([N(SO2F)2]<->), the iodine ion liquid, the simple substance iodine and one or more than one of other ion liquid, additive, curing agent and solvent which are evenly mixed according to the blending ratio. When the ion liquid electrolyte is applied to the dye sensitized solar battery, a high-efficiency thermal stability device with photoelectric power conversion efficiency of 7.5 percent is obtained, thereby the ion liquid electrolyte containing TCB negative ion is not used.

The present invention relates to a method for producing lithium fluorosulfonate which comprises reacting a lithium salt and fluorosulfonic acid in a nonaqueous solvent, wherein the lithium salt is a lithium salt not generating water through the reaction step.

There is provided a process for producing an α-substituted ester by reaction of a fluorosulfuric acid ester of α-hydroxyester with a Grignard reagent in the presence of a zinc catalyst. It is newly found that the reaction for production of α-substituted esters, in which the raw reaction substrate is limited to expensive trifluoromethanesulfonic acid esters, can proceed favorably with the use of fluorosulfuric acid esters suitable for mass-production uses. By the use of the fluorosulfuric acid ester high in optical purity, it is possible to obtain the α-substituted ester with high optical purity upon inversion of the asymmetric carbon configuration. The process of the present invention can solve all of the prior art problems and can be applied for industrial uses.

An object of the invention is to provide a nonaqueous electrolytic solution which is capable of bringing about a nonaqueous-electrolyte secondary battery improved in initial charge capacity, input / output characteristics, and impedance characteristics. The invention relates to a nonaqueous electrolytic solution which comprises: a nonaqueous solvent; LiPF6; and a specific fluorosulfonic acid salt, and to a nonaqueous-electrolyte secondary battery containing the nonaqueous electrolytic solution.

The invention discloses a preparation method of bis(fluorosulfonyl)amine. The preparation method comprises the following steps of enabling SO2F2 (sulfuryl fluoride), NH4F (ammonium fluoride) and triethylamine to react to prepare organic alkaline salt of bis(fluorosulfonyl)amine; performing replacing reaction with strong acid, and performing pressure-relief distillation, so as to obtain high-puritybis(fluorosulfonyl)amine. The preparation method has the advantages that the SO2F2, the NH4F and the organic alkaline are used as the raw materials, and the FSO3H (fluorosulfonic acid) with strong corrosion property is not used as the raw material; the technology is simple, the continuous operation property is strong, the product is easy to separate and purify, the high-purity (more than or equalto 99%) bis(fluorosulfonyl)amine can be prepared, and the yield rate reaches 90% or above; the chloride ion is not used in the whole reaction process, and the product quality is stable.

The invention discloses a flexible long-chain multi-onium-salt photoacid generating agent, a preparation method thereof and a photoresist composition. The flexible long-chain multi-onium-salt photoacid generating agent has a structural general formula (I) or (II) shown in the description, wherein A is one or both of I and S, X is a chain group having a length of 1-20 atoms, na is 2 or 3, R is oneor any of H, Cl, Br, I, and alkyl group or alkoxy group with a carbon atom number of 1-20, and R has a substitution number of 1-5 on a benzene ring. A carbon chain is extended in a photosensitizer molecule to connect a plurality of onium salt structural units, so that a photosensitizer can be better dissolved in a photoresist solution and can be distributed evenly; the multiple onium salts in themolecule help increase the unit acid generating rate; anions with fluorosulfonic acid have sufficient acidity, and may be subjected to chemical amplification reaction with resin; the long-chain structure helps increase the photoacid concentration in a certain zone and control the acid diffusion range to certain degree.

The invention provides a fluorine-containing sulfuric acid separation concentration method, which comprises the following steps of: providing a raw material liquid which contains sulfuric acid and hydrofluoric acid; and heating the raw material liquid at the pressure of minus 50Pa to minus 100Pa to the temperature of 110-130 DEG C to obtain concentrated sulfuric acid and mixed gases. The invention also provides a fluorine-containing sulfuric acid separation concentration device. According to the invention, when the raw material liquid containing sulfuric acid and hydrofluoric acid are heated at the pressure of minus 50Pa to minus 100Pa to the temperature of 110-130 DEG C, hydrofluoric acid and water in the raw material liquid are separated from sulfuric acid through the form of gaseous hydrogen fluoride and stream, and impurity separation and concentration of sulfuric acid can be simultaneously realized to obtain the mixed gases containing gaseous hydrogen fluoride and concentrated sulfuric acid. The separation concentration method provided by the invention can be used to separate hydrofluoric acid as an impurity from sulfuric acid and simultaneously condense dilute sulfuric acid into concentrated sulfuric acid. The method provided by the invention is simple and has a good separation concentration effect.

The invention discloses application of a fluorosulfonic acid ester compound in a battery electrolyte and belongs to the technical field of battery electrolytes. The fluorosulfonic acid ester compoundis added in the battery electrolyte as an additive with the addition quantity being 0.1-10 percent of the mass of the battery electrolyte and is one or combination of more of a formula I, a formula II, a formula III and a formula IV, and the formulas are described in the description. According to the application, by adding the fluorosulfonic acid ester compound in a lithium battery electrolyte, sothat the low temperature discharge characteristic and the life cycle characteristic of a battery are outstanding.

The present invention provides a bio-electrode composition including: (A) an ionic material; and (B) a resin other than the component (A); wherein the component (A) contains both of a repeating unit-a having a structure of any of silver salts of fluorosulfonic acid, fluorosulfonimide, and fluorosulfonamide; and a repeating unit-b having silicon. This can form a living body contact layer for a bio-electrode that is excellent in electric conductivity and biocompatibility, light in weight, manufacturable at low cost, and free from large lowering of the electric conductivity even when it is wetted with water or dried. The present invention also provides a bio-electrode in which the living body contact layer is formed from the bio-electrode composition, and a method for manufacturing the bio-electrode.

The invention provides a nanometer porous and super-hydrophobic skeleton strong solid acid material and a preparing method thereof. The preparing method comprises the following steps: a, polymerizing divinyl benzene under a solvothermal condition, wherein benzoyl peroxide is used as an initiator, polymerizing is carried out at a temperature between 80DEG C and 180DEG C for 12-48h, 7-25mL of corresponding solvent is used each time when 2g of divinyl benzene monomer is used, and the mass ratio of the initiator to the divinyl benzene is 0.015-0.0375; b, adding a solvent to the nanometer porous polydivinyl benzene material which is prepared in the step a, and adding a sulfonating agent to carry out sulfonating, wherein carbon tetrachloride or methylbenzene is used as the solvent, trifluoromethane sulfonic acid or fluorosulfuric acid is used as the sulfonating agent, the volume ratio of the solvent to the sulfonating agent is 10:1, the mass ratio of the PDVB (Polydivinyl Benzene) to the sulfonating agent is (5-10):1, and sulfonating is carried out in a range between 80DEG C and 110DEG C for 12-36h.

A resist composition is provided comprising a base polymer containing an iodized polymer, and an acid generator containing a sulfonium salt and / or iodonium salt of iodized benzene ring-containing fluorosulfonic acid. When processed by lithography, the resist composition exhibits a high sensitivity, low LWR and improved CDU independent of whether it is of positive tone or negative tone.

The method includes steps: first, positive ionized Nano Pd granules is synthesized from Pd salt deoxidized in aqueous solution of cation polymer in ammonium class and reducing agent; then, fluorosulfuric acid type proton exchange membrane is dipped in water decentralization liquid of positive ionized Nano Pd granules; thus, Pd granules are static self-assembled to exit and entrance of sulfonic acid radical group in methanol infiltration channels formed on surface of proton exchange membrane so as to reduce penetrability of methanol to membrane. Advantages are: less loading noble metal Pd, and no inference on proton conducting power basically.

An adhesive composition including a resin and an electro-conductive material, wherein the electro-conductive material is one or more salts selected from sodium salt, potassium salt, and calcium salt having two fluorosulfonic acid structures per molecule and 5 or more carbon atoms shown by formula (1): −O3S—Y—La-A-Lb-Y—SO3− (Mn+)2 / n (1), wherein, A represents a divalent hydrocarbon group having 1-30 carbon atoms and optionally substituted by a heteroatom or optionally interposed by a heteroatom; La and Lb each represent a linking group like an ether group, ester group; Y represents an alkylene group having 2-4 carbon atoms, containing 1-6 fluorine atoms, and optionally containing a carbonyl group; Mn+ represents any of Na+, K+, Ca2+. This can form a living body contact layer for a bio-electrode with excellent electric conductivity, biocompatibility, and light weight, which can be manufactured at low cost and without large lowering of electric conductivity even when it is wetted with water or dried.

A resist composition contains a polymer-bound acid generator, specifically a polymer comprising recurring units derived from a sulfonium or iodonium salt having a polymerizable unsaturated bond and containing iodine in the linker between the polymerizable unsaturated bond and a fluorosulfonic acid. The resist composition offers a high sensitivity and improved CDU independent of whether it is of positive or negative tone.

The present invention provides a method of converting a hydroxy group in alcohols containing an electron withdrawing group into perfluoroalkane sulfonate and fluorosulfonate esters, which are good leaving groups, with inversion of configuration where the hydroxyl-bearing carbon is chiral. The method consists of converting an alcohol to an O--N,N-dialkylsulfamate ester and reacting it with a perfluoroalkansulfonic or fluorosulfonic acid. The method has applications in the synthesis of pharmaceutical and agrochemical compounds.

A bio-electrode composition includes (A) an ionic material and (B) a silicon material powder. The component (A) is a polymer compound containing a repeating unit-a having a structure selected from an ammonium salt, a sodium salt, a potassium salt, and a silver salt of any of fluorosulfonic acid, fluorosulfonimide, and N-carbonyl-fluorosulfonamide. Thus, the present invention provides a bio-electrode composition capable of forming a living body contact layer for a bio-electrode that is excellent in electric conductivity and biocompatibility, is light-weight, can be manufactured at low cost, and can control significant reduction in the electric conductivity even when the bio-electrode is wetted with water or dried; a bio-electrode including a living body contact layer formed of the bio-electrode composition; and a method for manufacturing the bio-electrode.

The present invention provides a bio-electrode composition including: a resin containing a urethane bond in a main chain and a silsesquioxane in a side chain; and an electro-conductive material, wherein the electro-conductive material is a polymer compound having one or more repeating units selected from fluorosulfonic acid salts shown by the following general formulae (1)-1 and (1)-2, sulfonimide salts shown by the following general formula (1)-3, and sulfonamide salts shown by the following general formula (1)-4. This can form a living body contact layer for a bio-electrode that is excellent in electric conductivity and biocompatibility, light in weight, manufacturable at low cost, and free from large lowering of the electric conductivity even when it is wetted with water or dried. The present invention also provides a bio-electrode in which the living body contact layer is formed from the bio-electrode composition, and a method for manufacturing the bio-electrode.

The present invention discloses a method for preparing 1,1,1-trifluoroethane and 1,1,1-difluorochloroethane. In the existence of liquid phase fluorinated catalyst and additive, VDC and hydrogen fluoride are reacted in liquid phase. The liquid phase fluorinated catalyst is selected from halide of metal antimony, tin, titanium, tantalum, niobium or fluorosulfuric acid or chlorosultonic acid. The additive comprises at least one kind of phenolic compound, and can be added with organic phosphorus compound. The inventive method can effectively reduce tarry matters generation, thereby prolonging useful life of the catalyst and improving its efficiency.

A fluoro material is provided for use as an electrode active material as well as a process for producing it. The material includes particles of a fluorosulfate which corresponds to formula (I) Li1-yFe1-xMnxSO4F (I) in which 0<x≦1 and 0≦y<1. The material includes a phase of triplite structure and optionally a phase of tavorite structure, the phase of triplite structure representing at least 50% by volume. The material may be obtained from precursors of the elements of which it is constituted, via a ceramic route, via an ionothermal route or via a polymer route.

The present invention provides a bio-electrode composition including: a resin having a urethane bond and a silicone chain in the main chain; and an electro-conductive material, wherein the electro-conductive material is a polymer compound having one or more repeating units selected from fluorosulfonic acid salts shown by the following formula (1)-1, fluorosulfonic acid salts shown by the following formula (1)-2, sulfonimide salts shown by the following formula (1)-3, and sulfonamide salts shown by the following formula (1)-4. This can form a living body contact layer for a bio-electrode that is excellent in electric conductivity and biocompatibility, light in weight, manufacturable at low cost, and free from large lowering of the electric conductivity even when it is wetted with water or dried. The present invention also provides a bio-electrode in which the living body contact layer is formed from the bio-electrode composition, and a method for manufacturing the bio-electrode.

The invention provides a method for preparing a methanol-resisting high-conductivity proton exchange membrane, relates to the technical field of fuel cell diaphragms, and solves the problem that the methanol permeability of a proton exchange membrane containing fluorosulfuric acid is high and reduces along with proton conductivity. The method comprises the steps of soaking the proton exchange membrane which is pre-processed and contains fluorosulfuric acid into 0.1%-5% by weight of polyelectrolyte SPES aqueous solution containing asymmetric electric charges at the temperature of 20-80 DEG C for 10-40 minutes, using deionized water to wash off SPES on the membrane surface, using nitrogen to blow the membrane dry, soaking the membrane into 0.05%-10% by weight of polycation compound aqueous solution at the temperature of 20-60 DEG C for 10-40 minutes, using the deionized water to flush off a compound on the membrane surface, using the nitrogen to blow the membrane dry, repeating the process, and assembling 5-100 layers of membranes to prepare the methanol-resisting high-conductivity proton exchange membrane. By means of the method, the methanol permeating amount can be reduced, and simultaneously the proton conductivity can be improved.

The present invention provides a cleaning solution for removing etching residues, which includes a fluorine-containing compound, wherein the fluorine-containing compound is selected from the group consisting of fluoride salt, fluoroalkane, hexafluorosilicic acid, hexafluorosilicate, fluorophosphoric acid, hexafluorophosphate, fluoroboric acid, fluoroborate, trifluoromethanesulfonic acid, trifluoromethanesulfonate, fluorosulfonic acid, fluorosulfonate, and any combination of the above. The cleaning solution can improve the effect of removing silicon-containing by-products produced by etching silicon-containing materials such as silicon nitride.

The invention discloses a method for preparing lithium fluorosulfonate by using an organometallic lithium reagent, which comprises the following steps: (1) slowly mixing and reacting the organometallic lithium reagent serving as a lithium source with fluorosulfonic acid under a low-temperature condition in the presence of perfluorohexane serving as a solvent to obtain a lithium fluorosulfonate crude product; and washing the crude product with a reaction solvent for 5 times; (2) carrying out vacuum pumping on the crude product, adding a poor organic solvent of lithium fluorosulfonate, washing for three times, and carrying out vacuum pumping on the poor organic solvent to obtain a solid; (3) adding carbonate, nitrile and alcohol organic solvents into the solid, extracting, filtering, concentrating, adding a low-polarity aprotic solvent into the concentrated solution, and carrying out static crystallization; and (4) filtering the crystals again, and carrying out vacuum drying to obtain the lithium fluorosulfonate product. The preparation steps are carried out without water under the protection of inert gas. According to the preparation method provided by the invention, the lithium fluorosulfonate can be prepared, the yield is high, the product quality is stable, and the content of impurities such as potassium ions, sodium ions, calcium ions, fluorine ions, sulfate ions and water in the product can be effectively reduced.

The invention provides a treatment method and device for lithium hexafluorophosphate synthesis tail gas, belonging to the technical field of tail gas treatment. The treatment method comprises the following steps: absorbing hydrogen fluoride in tail gas by using chlorosulfonic acid, absorbing hydrogen chloride in the tail gas by using sulfur trioxide, and returning phosphorus pentafluoride in the tail gas to a lithium hexafluorophosphate synthesis process for reuse. The treatment device comprises a first-stage absorption tower which internally adopts circulating liquid chlorosulfonic acid as areaction medium and is used for absorbing hydrogen fluoride in the tail gas, and a secondary absorption tower which is used for supplying the liquid sulfur trioxide for a reaction with hydrogen chloride in the tail gas. According to the invention, hydrogen fluoride in the tail gas is absorbed by a reaction with chlorosulfonic acid; a reaction with sulfur trioxide is performed to adsorb hydrogen chloride in the tail gas and to generate chlorosulfonic acid; and hydrochloric acid is not generated in the whole process, the defect of high environmental protection pressure caused by production of alarge amount of hydrochloric acid in the prior art is overcome, the produced chlorosulfonic acid and fluorosulfonic acid are important chemical raw materials, and resource utilization of mixed acid isrealized.

The invention discloses a preparation method of a high-performance proton exchange membrane, relates to the technical field of a fuel cell membrane, and solves the problem that the methanol permeabiliy of the proton exchange membrane containing fluorosulfuric acid is high and is reduced along with the proton conductivity. The method comprises the steps of: dipping the pre-processed proton exchange membrane containing fluorosulfuric acid into 0.1-5wt% of sulfonated polyelectrolyte SPES-NH2 aqueous solution, soaking for 10-40 minutes at 20-80 DEG C; rinsing the SPES-NH2 at the surface of the membrane by deionized water, blowing by nitrogen, then dipping the membrane into 0.05-10wt% of compound aqueous solution containing two aldehyde groups, soaking for 10-40 minutes at 20-60 DEG C; rinsing the compound at the surface by the deionized water, blowing by the nitrogen, repeating the processes and assembling into 5-100 layers to obtain the high-performance proton exchange membrane disclosed by the invention. According to the method disclosed by the invention, the methanol permeability can be reduced and the proton conductivity can be improved.