157 results about "Propane sultone" patented technology

The present invention provides a multifunctional silane coupling agent, which is prepared from commercially available 3-aminopropylsilane coupling agent, acryloxy polyetheramine, and one of an alkylating agent, polyether sulfonate, γ-propane sultone or γ-butyrolactone through Michael addition reaction and quaternization reaction. The multifunctional silane coupling agent is a new variety carrying zwitterions, quaternary ammonium cations and polyether chains, enriching the functions and application scope of silane coupling agents. It can endow some modified materials with surface hydrophilicity, conductivity, antibacterial, antifogging, antifouling, biocompatibility, anticoagulant and wet lubrication properties, etc. at the same time.

The invention provides a lithium ion battery and an electric device, the lithium ion battery comprises a positive electrode, a negative electrode, a diaphragm and an electrolyte, the positive electrode comprises a positive electrode active material layer, the positive electrode active material layer comprises a positive electrode active material and an oxide solid electrolyte, and the surface of the diaphragm is provided with an oxide solid electrolyte layer; the electrolyte comprises a solvent, a lithium salt, a first additive and a second additive, the first additive comprises fluoroethylene carbonate, and the second additive comprises 1, 3-propane sultone; the lithium ion battery satisfies the following conditions: 0.72 < = (H + X) / P < = 8; 0.5 < = (A + B) / (H + X) < = 8.89; 0.16 < = H / X < = 6.4; 0.5 < = A / B < = 12. According to the lithium ion battery provided by the invention, the safety and the high and low temperature performance of the positive electrode of the lithium ion battery are remarkably improved through multi-component cooperative regulation and control, further, when the lithium ion battery meets the limitation of the relational expression at the same time, the interface impedance can be reduced to the maximum extent, and the performance of the lithium ion battery can be improved through cooperation of multi-component parameters. And synchronous optimization of thermal safety, low-temperature discharge capacity and high-temperature cycle life of the battery is realized.

The invention discloses a concave-convex high-skid-resistance archaized brick and a preparation process thereof, and relates to the field of building materials. When the concave-convex high-skid-resistance archaized brick is prepared, ferrochrome waste residues, coal ash, argil, quartz sand, clay powder and red soil powder are subjected to mold pressing and roasting, and a green brick is prepared; mixing albite, quartz, calcite, zinc oxide, barium carbonate, deionized water, water glass and American water, glazing the surface of a green brick, and roasting to obtain an archaized brick matrix; the archaized brick base body is sequentially subjected to a reaction with 3-aminopropyltrimethoxysilane, 5, 7-dihydroxyflavone, 1H, 1H-perfluorooctylamine and 1, 3-propane sultone, and the concave-convex high-skid-resistance archaized brick is prepared. The concave-convex high-skid-resistance archaized brick prepared by the invention has good antibacterial, antifouling and coating durability effects.

The invention belongs to the technical field of membrane separation, and particularly relates to a low-pressure high-flux polyamide / polysulfone hollow fiber composite nanofiltration membrane and a preparation method thereof. The preparation method of the composite nanofiltration membrane comprises the following steps: dissolving sulfonated polysulfone, poly (1-vinyl-3-butylimidazole) bromide and polyvinylpyrrolidone to prepare a spinning solution, and spinning to obtain a base membrane; carrying out hydrophilic modification on the base membrane by using 1, 3-propane sultone; then, an aqueous phase solution containing poly (gamma-glutamic acid) and triethylene tetramine and an organic phase solution containing trimesoyl chloride and 3, 5-diaminobenzoic acid are subjected to interfacial polymerization in the inner cavity of the modified base membrane to form a polyamide separation layer; and finally, carrying out heat treatment to obtain the composite nanofiltration membrane. Through the synergistic effect of zwitterionic ionization of the base membrane and biomacromolecule construction of the separation layer, the mass transfer resistance of water is remarkably reduced, unification of high flux and high selectivity is achieved, and good structural stability is achieved.

The invention discloses a negative-electrode-free sodium ion battery, which comprises a positive plate, a negative plate, a diaphragm and an electrolyte, the positive plate comprises a positive current collector, the surface of the positive current collector is coated with a positive active material, a positive conductive agent and a positive binder, the negative plate comprises a negative current collector, the surface of the negative current collector is coated with a carbon nanotube and polyvinylidene fluoride, the negative electrode current collector is a copper foil, the electrolyte comprises sodium salt and an organic solvent, the sodium salt is sodium nitrate, and the organic solvent comprises fluoroethylene carbonate, 1, 3-propane sultone and dimethyl sulfoxide. The negative-electrode-free sodium ion battery has the beneficial effects that the negative electrode does not use active materials and only uses CNT and PVDF, so that more positive electrode active substances can be accommodated in the battery, more electric energy can be stored under the same volume, and the energy density of the negative-electrode-free sodium ion battery is improved. No negative electrode active material is introduced, so that the cost is reduced and the manufacturing process is simplified. And meanwhile, by optimizing an electrolyte system, the growth of sodium dendrites is effectively inhibited, and the cycle life of the battery is prolonged.

The invention discloses a preparation method of an antibacterial moisture-permeable polyamide fiber and the antibacterial moisture-permeable polyamide fiber, and relates to the technical field of polyamide fibers. When the antibacterial moisture-permeable polyamide fiber is prepared, pretreated carbon nanotubes, ferric trichloride, sodium acetate trihydrate and diallyl disulfide are subjected to a microwave-assisted heating reaction, and carbon nanotube loaded nano iron sulfide is prepared; the preparation method comprises the following steps: modifying carbon nano tube loaded nano iron sulfide by using 3-aminopropyltriethoxysilane to prepare a modified carbon nano tube; mixing the modified carbon nanotubes and a nylon raw material, and performing melt spinning to obtain modified polyamide fibers; the modified polyamide fibers are modified with diethyl (3-aminopropyl) phosphate, 3-pyridylaldehyde and ethyl isocyano acetate, and flame-retardant modified polyamide fibers are prepared; and modifying the flame-retardant modified polyamide fiber with propane sultone to obtain the antibacterial moisture-permeable polyamide fiber. The prepared antibacterial moisture-permeable polyamide fiber has the advantages of being antibacterial, moisture-absorbing, antistatic, flame-retardant and high in tensile strength.

The invention discloses a wide-voltage wide-temperature-range sodium-ion battery electrolyte and a preparation method and application thereof, and belongs to the technical field of sodium-ion battery electrolytes.The wide-voltage wide-temperature-range sodium-ion battery electrolyte comprises sodium salt, an organic solvent and an additive, the organic solvent is selected from one or more of ethylene carbonate, propylene carbonate, ethyl methyl carbonate, dimethyl carbonate, diethyl carbonate, ethylene glycol dimethyl ether, diethylene glycol dimethyl ether and triethylene glycol dimethyl ether, and the additive is selected from one or more of fluoroethylene carbonate, allyl-1, 3-propane sultone, 1, 3-propylene sultone, 1, 3-propylene sultone and 1, 3-propylene sultone. The additive is one or more of 1, 3-propyl sultone, methylene methane disulfonate, ethylene sulfate, trifluoromethanesulfonic anhydride, pentaerythritol bicyclic sulfate, tri (trimethylsilane) phosphate, tri (trimethylsilane) phosphite, tri (trimethylsilane) borate, acesulfame sodium and aluminum trifluoromethanesulfonate, and the additive is one or more of 2, 3-propylene sultone, methylene methane disulfonate, ethylene sulfate, trifluoromethanesulfonic anhydride, pentaerythritol dicyclosulfate, tri (trimethylsilane) phosphate, tri (trimethylsilane) phosphite, tri (trimethylsilane) borate, tri (trimethylsilane) phosphate and tri (trimethylsilane) borate. The electrolyte provided by the invention not only keeps high coulombic efficiency at low temperature, but also has good cycle stability at high temperature.

The invention discloses a high-energy-density fast-charging polymer soft package battery, which comprises a positive electrode, a negative electrode, a diaphragm, an electrolyte and a packaging body, the positive electrode is composed of core-shell composite particles prepared from lithium cobalt oxide and a lithium-rich manganese-based material through a spray drying method, the negative electrode is a lithium titanate coated three-dimensional porous graphene skeleton loaded silicon carbon composite material, and the lithium titanate coated three-dimensional porous graphene skeleton loaded silicon carbon composite material is a lithium titanate coated three-dimensional porous graphene skeleton loaded silicon carbon composite material. The electrolyte comprises lithium bis (trifluoromethylsulfonyl) imide, fluoroethylene carbonate and 1, 3-propane sultone, and the packaging body sequentially comprises a polyether-ether-ketone high-temperature-resistant layer, a nanometer aluminum oxide enhanced aluminum foil and a modified polypropylene heat sealing layer from inside to outside. Through modification of positive and negative electrode materials, optimization of an electrolyte and improvement of a packaging process, the energy density, the fast charging performance, the safety, the cycle life and other aspects are remarkably improved, and the defects of a traditional soft package battery are effectively overcome.

The invention discloses a sodium-ion battery electrolyte and a preparation method thereof, and relates to the technical field of sodium-ion batteries, the electrolyte comprises a sodium salt, a composite solvent, an additive and an auxiliary agent, the sodium salt is formed by compounding sodium bis (fluorosulfonyl) imide, sodium bis (trifluoromethanesulfonyl) imide and modified sodium bis (oxalato) borate, and the composite solvent is formed by compounding sulfolane, 1, 3-butanediol, 1, 3-butanediol, 1, 3-butanediol, 1, 3-butanediol, 1, 3-butanediol, 1, 3-butanediol, 1, 3-butanediol, 1, 3-butanediol and 1, 3-butanediol. The auxiliary agent is nano-scale ZIF-8, the additive is 1, 3-propylene glycol dimethyl ether, dimethyl carbonate, fluoroethylene carbonate and ethyl acetate, the additive is modified 1, 3-propane sultone, trimethyl phosphate and hydroquinone dimethyl ether, and the auxiliary agent is nano-scale ZIF-8. According to the electrolyte, sodium bis (oxalato) borate is modified after being treated by hydrogen peroxide and has efficient hydrofluoric acid resistance, meanwhile, hydrofluoric acid generated by the reaction of fluorine-containing sodium salt and water in the electrolyte can be specifically removed by utilizing an auxiliary agent of the nano ZIF-8 and a synergistic effect formed by the sodium salt and the auxiliary agent, and damage of the hydrofluoric acid to a negative electrode SEI film is avoided; and the cycle life of the sodium ion battery is prolonged.

The invention discloses an anti-boron salt-tolerant polymer suspension emulsion and a preparation method thereof, and relates to the technical field of suspension emulsions. The preparation method comprises the following steps: firstly, reacting 1, 3-bis (dimethylamino)-2-propanol with oxalyl chloride monoallyl ester to prepare double-bond modified tertiary amine when preparing the boron-resistant and salt-resistant polymer suspension emulsion; reacting the double-bond modified tertiary amine with propane sultone to prepare an amphoteric monomer; reacting the double-bond modified tertiary amine with 1-bromodecane to prepare a hydrophobic monomer; the preparation method comprises the following steps: copolymerizing acrylamide, maleic acid, an amphoteric monomer and a hydrophobic monomer to prepare modified polyacrylamide; and mixing the modified polyacrylamide, the slurry preparation soil, the polyacrylonitrile ammonium salt, the organic silanol, the emulsified paraffin and the boron inhibitor with water to prepare the boron-resistant and salt-resistant polymer suspension emulsion. The boron-resistant and salt-resistant polymer suspension emulsion prepared by the invention has the advantages of salt resistance, temperature resistance, good filtrate loss reduction performance and boron resistance.

Systems and methods are provided for using electrolytic compositions in lithium ion batteries. In one example, an electrolytic composition may include vinylene carbonate, fluoroethylene carbonate, 1,3-propane sultone, ethylene sulfite, and a conducting salt including no less than 80 mol % of lithium bis(fluorosulfonyl)imide. In this way, a capacity retention of the lithium ion battery may be maintained, such as during high-temperature storage at 100% state of charge.

The present application relates to a battery cell, a battery device and an electrical device. The battery cell includes an electrode assembly and an electrolyte. The electrode assembly includes a positive electrode tab and a negative electrode tab. The positive electrode tab includes a positive current collector portion and a positive electrode film layer, and the positive electrode film layer includes a lithium-containing phosphate with an olivine structure. The negative electrode tab includes a negative current collector portion and a negative electrode film layer, and the negative electrode film layer includes a carbon-based material. The electrolyte includes a carboxylate solvent, a first additive and lithium fluorosulfonimide. The mass content of the carboxylate solvent is 8% to 60%. The total mass content of the first additive is 2.5% to 10%. The first additive includes 1,3-propane sultone with a mass content ≥0, a derivative of ethylene carbonate with a mass content ≥0, and vinylene carbonate with a mass content >0. The derivative of ethylene carbonate includes the compound shown in Formula A. The mass content of lithium fluorosulfonimide is 4% to 8%. The present application can improve the fast charging performance and cycling performance of the battery cell. #imgabs0# Formula A.

The present invention discloses a silicon monoxide nanomaterial and a preparation method thereof, belonging to the technical field of nanomaterials. The silicon monoxide nanomaterial comprises the following raw materials in parts by weight: metal silicon powder: 80 - 120 parts, silicon dioxide powder: 20 - 40 parts, binder: 0.5 - 3 parts, surfactant: 2 - 8 parts; in the present invention, intermediate 1 is prepared by the substitution reaction of 3 - allyl - 2 - hydroxybenzaldehyde and epichlorohydrin, then intermediate 2 is prepared by the ring - opening reaction of intermediate 1 and n - decanol, then intermediate 3 is prepared by the sulfonation reaction of intermediate 2 and 1,3 - propane sultone, and finally the surfactant is prepared by the polymerization reaction of 2 - methacryloyloxyethyl phosphorylcholine, 2 - acrylamide - 2 - methylpropanesulfonic acid and intermediate 3. The silicon monoxide nanomaterial prepared by the present invention has a high initial Coulomb efficiency and good cycle performance.

The invention provides a preparation method of 3-fluoro-1, 3-propane sultone, which comprises the following steps: (1) carrying out sulfonation reaction on a reactant (II) and sulfite in a solvent to obtain an intermediate compound (III); and (2) reacting the intermediate compound (III) prepared in the step (1) with a solvent and a fluorinating agent to prepare a compound (I), namely 3-fluoro-1, 3-propane sultone. The preparation method has the characteristics of convenient and easily available raw materials, short route, high total yield and the like.

This invention discloses a silicon-based anode binder for lithium-ion batteries and its preparation method, relating to the field of silicon-based anode technology. The method includes first ring-opening sulfonation of polyetheramine with 1,3-propanesulfonyl lactone in an aqueous phase to obtain sulfonated polyetheramine; then, polyacrylic acid is activated by EDC·HCl and NHS and then amidated and grafted onto the sulfonated polyetheramine to obtain sulfonated polyetheramine-grafted polyacrylic acid; finally, the aqueous solution of this graft is in-situ coordinated with 2-methylimidazole and zinc nitrate to generate ZIF-8 nanoparticles, and then succinic acid and choline chloride are added for regulation to obtain the binder. This invention achieves dual modification through molecular grafting of flexible sulfonated polyether segments and in-situ construction of a three-dimensional ZIF-8 conductive network, utilizing succinic acid and choline chloride to eliminate competitive coordination of active groups, significantly improving ionic conductivity and stabilizing the electrode structure.

The invention discloses a preparation method of a copper foil brightener additive, and belongs to the technical field of synthesis of sulfur-containing organic matters. The preparation method mainly comprises the following steps: by taking ethanolamine hydrochloride as a starting raw material, firstly generating sulfate amino alcohol hydrosalt, then synthesizing and generating an intermediate product by taking carbon disulfide as a sulfur source, carrying out simple spin-drying treatment on the intermediate product, and directly reacting with 1, 2, 3-trimethyl-1, 3-pentanedione to obtain the 1, 2, 3-pentanedione. The target product 3-(thiazoline-2-sulfydryl) sodium propanesulfonate can be obtained by reacting 1, 3-propane sultone at normal temperature for 4 hours. The additive prepared by the method disclosed by the invention has the advantages of cheap and easily available raw materials, mild reaction conditions, high yield and the like.

The invention relates to a preparation method of 3-(piperazine-1-yl) propane-1-sulfonic acid, and relates to the technical field of organic chemical synthesis. The preparation method of the 3-(piperazine-1-yl) propane-1-sulfonic acid comprises the following steps: feeding and stirring, dropwise adding and mixing, carrying out temperature-controlled reaction, and purifying and drying. The cosolvent activates amino groups and inhibits side reactions, complete reaction of the substrate 1, 3-propane sultone is ensured through excessive piperazine, generation of by-products is reduced in the dropwise adding process, the temperature control reaction equilibrium rate is achieved, purification treatment is conducted through the pulping agent in the final purification and drying stage, reaction impurities are effectively removed, and it is finally guaranteed that the product purity meets the pharmaceutical grade requirement; the whole technological process is simple, the production period is shortened, and labor and time cost is reduced.

The application discloses a kind of sodium ion battery electrolyte and preparation method thereof, it is related to sodium ion battery technical field, the electrolyte includes: sodium salt, composite solvent, additive and auxiliary agent, the sodium salt is sodium difluorosulfurylimide, sodium bis-trifluoromethanesulfonimide and modified sodium borate dihydroxide dioxalate compound composition, composite solvent is sulfolane-1,3-propanediol dimethyl ether, dimethyl carbonate, fluoroethylene carbonate and ethyl acetate, additive is modified 1,3-propane sulfone lactone, trimethyl phosphate and hydroquinone dimethyl ether, auxiliary agent is nano ZIF-8.This electrolyte sodium borate dihydroxide dioxalate is modified after hydrogen peroxide treatment, with high-efficiency anti-hydrofluoric acid capacity, while using the auxiliary agent of nano ZIF-8, sodium salt and auxiliary agent form synergistic effect can be targeted to remove hydrogen fluoride sodium salt and moisture reaction generated in electrolyte hydrofluoric acid, avoid the damage of hydrofluoric acid to negative electrode SEI film, and then improve the cycle life of sodium ion battery.

The invention provides a supramolecular ion separation membrane with an asymmetric functionalized nano-channel structure as well as a preparation method and application thereof, and relates to the field of separation membranes. The preparation method of the supramolecular ion separation membrane comprises the following steps: flatly attaching a covalent organic framework ion separation membrane to a polyacrylonitrile substrate to obtain a composite membrane; the membrane is installed in an H-shaped reactor, and only one side of the membrane is exposed in a reaction solution environment; the preparation method comprises the following steps: dissolving 1, 3-propane sultone in an organic solvent to obtain a sultone solution; injecting the sultone solution into a reaction chamber, close to the surface of a membrane, in an H-type reactor, so that the sultone solution and the-NH-active sites exposed on the surface of the membrane are subjected to a ring-opening reaction; after the reaction is completed, washing the obtained membrane sample with methanol and water; and drying to obtain the target supramolecular ion separation membrane. The membrane material provided by the invention is good in performance, can still maintain stable ion screening performance in a high-salt environment, can be applied to water treatment, and has a good industrial application prospect.

The present invention provides a non-aqueous electrolyte solution for a lithium secondary battery comprising a lithium salt, an organic solvent and an additive, wherein the additive includes an anion having a sulfone imide group and a propane sultone group or an ethylene sulfate group.

The invention relates to the technical field of electrochemistry, in particular to an electrolyte and a secondary battery. The electrolyte comprises an organic solvent, an electrolyte and additives, the additives comprise a first additive, a second additive and a film-forming additive, the first additive is selected from at least one of compounds shown in the formula I, the second additive is selected from at least one of compounds shown in the formula II, and the film-forming additive is selected from at least one of compounds shown in the formula II. The film-forming additive is selected from at least one of vinylene carbonate, vinylethylene carbonate, fluoroethylene carbonate, ethylene sulfate, 1, 3-propane sultone, lithium difluorophosphate and lithium bis (oxalato) borate, and the first additive, the second additive and the film-forming additive have a synergistic effect, so that a composite film with a stable structure can be formed on the surface of an electrode; and the transmission of lithium ions on an electrode / electrolyte interface is facilitated, so that the high-temperature performance of the secondary battery and the cycle performance of the secondary battery under high voltage are improved.

The invention discloses an electrolyte, a lithium ion battery and electric equipment, the electrolyte comprises a lithium salt, a solvent and a functional additive, the functional additive comprises at least one of a first additive, a second additive and a third additive, the first additive comprises vinylene carbonate, methylene methanedisulfonate, divinyl sulfone and 1, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, and the third additive comprises at least one of vinylene carbonate, methylene methanedisulfonate, divinyl sulfone and 1, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate. The first additive comprises at least one of 1, 3-propane sultone, the second additive comprises at least one of 4-(trifluoromethylsulfonyl) benzonitrile and ethylene sulfate, and the third additive comprises at least one of succinic anhydride, adiponitrile and 4-(trifluoromethylsulfonyl) benzonitrile. According to the characteristics and main problems of the lithium manganese iron phosphate battery, corresponding functional additives are respectively matched, so that stable electrolyte interface films are formed on the surfaces of the positive electrode and the negative electrode, dissolution of transition metal manganese ions of the positive electrode and deposition of the negative electrode are inhibited, and gas production of the battery under a high-temperature condition is reduced.

The invention provides a battery and an electronic device, the battery comprises a negative plate, a positive plate and an electrolyte, a positive active material layer of the positive plate is provided with a tab groove, a positive tab is accommodated in the tab groove, and the surface of the positive tab is provided with first adhesive paper; a groove is formed in a negative active material layer of the negative plate, the tab groove and the groove are oppositely arranged in the thickness direction of the positive plate, second adhesive paper is arranged in the groove, and the orthographic projection area of the second adhesive paper in the thickness direction of the positive plate is S; the electrolyte comprises ethylene carbonate, fluoroethylene carbonate and 1, 3-propane sultone, the sum of the mass content percentage of the ethylene carbonate and the fluoroethylene carbonate in the electrolyte is w1, and the mass content percentage of the 1, 3-propane sultone in the electrolyte is w2; wherein S and w1 satisfy 0.5 < = w1 / S < = 25. According to the battery disclosed by the invention, excellent high-temperature cycling stability of the lithium battery can be ensured, and meanwhile, better battery safety performance can be met.

The invention discloses a ternary lithium ion battery electrolyte and an application thereof. The ternary lithium ion battery electrolyte comprises a lithium salt, an ester solvent and an additive, the additives comprise an additive I and an additive II; the additive I is formed by introducing-CH3,-CH3O,-COOH,-CF3,-F and isomers thereof on a molecular structure of 1, 3-propane sultone. And the SEI film formed at the negative electrode contains more organic sulfides and fluorides, so that the interface impedance of the negative electrode is reduced, and Li < + > transmission at low temperature is facilitated. Meanwhile, more inorganic sulfides are formed in the CEI film on the positive electrode, so that the side reaction of an electrode / electrolyte interface at high temperature can be inhibited, and the high-temperature storage performance of the battery can be remarkably improved. And finally, the battery has relatively good high and low temperature performance.

The application relates to the technical field of batteries, in particular to an electrolyte suitable for primary lithium-manganese batteries and a preparation method thereof. The electrolyte comprises propylene carbonate, ethylene carbonate, lithium bisfluorosulfonylimide, lithium perchlorate, lithium bisoxalate borate, terminal bisdifluorophosphorylated oligomeric trimethylene carbonate, ethylene glycol dimethyl ether, lithium difluorooxalate borate and 1,3-propane sultone. The electrolyte is prepared through a pre-coordination and segmented dilution process with specific timing. The electrolyte system can synergistically optimize the electrode interface film forming process, has high discharge capacity retention rate and low direct current resistance at low temperature (-20 DEG C), and has high capacity retention rate after high-temperature storage (60 DEG C), thereby significantly improving the comprehensive performance of the primary lithium-manganese battery in a wide temperature range.

A battery cell, a battery device, and an electric device. The battery cell comprises an electrode assembly and an electrolyte, wherein the electrode assembly comprises a positive electrode sheet and a negative electrode sheet; the positive electrode sheet comprises a lithium-containing phosphate; the negative electrode sheet comprises graphite particles; the electrolyte comprises a carboxylate ester solvent, a linear carbonate solvent, and an additive; the mass content of the carboxylate ester solvent is 10% to 30%; the mass content of the linear carbonate solvent is 10% to 50%; the mass content of the additive is 3% to 9%; the additive comprises 1,3-propane sultone having a mass content greater than or equal to 0, an ethylene carbonate derivative having a mass content greater than or equal to 0, and vinylene carbonate having a mass content greater than 0; and the ethylene carbonate derivative comprises a compound represented by formula A, wherein in formula A, Q1, Q2, Q3, and Q4 each independently comprise any one of a hydrogen atom, a halogen atom, a C1 to C5 alkyl group, or a C1 to C5 haloalkyl group, and Q1, Q2, Q3, and Q4 are not simultaneously hydrogen atoms.

The invention relates to the field of battery electrolytes, in particular to an additive, an electrolyte containing the additive and a battery containing the electrolyte, the additive is trimethylsiloxy nitrile, and the electrolyte comprises an organic solvent, an electrolyte lithium salt and an additive, the additive in the electrolyte comprises one or more of trimethylsiloxy nitrile, fluoroethylene carbonate, ethylene sulfate, vinylene carbonate and 1, 3-propane sultone; the electrolyte lithium salt is a mixed lithium salt of lithium hexafluorophosphate and lithium difluorophosphate; the organic solvent comprises one or more of carbonic ester, carboxylic ester, fluoro-carbonic ester and fluoro-carboxylic ester. According to the additive, the electrolyte containing the additive and the battery containing the electrolyte, the cycle performance and the high-temperature performance of the ternary high-nickel lithium ion battery can be improved.

Electrolyte composition for batteries, the electrolyte composition comprising: ethylene carbonate; Diethyl carbonate; Ethyl methyl carbonate; vinylethylene carbonate; vinyl carbonate; Propane-1,3-sultone; ethylene sulfate; and lithium difluorophosphate; and wherein the ethylene carbonate, the diethyl carbonate and the ethyl methyl carbonate are each present in the electrolyte composition in an amount of 10 parts by weight to 50 parts by weight based on 100 parts by weight of the electrolyte composition; wherein the ethylene carbonate, the diethyl carbonate and the ethyl methyl carbonate are present in a ratio of 1:1:1; wherein the vinylethylene carbonate is present in the electrolyte composition at 0.5 parts by weight based on 100 parts by weight of the electrolyte composition; wherein the vinyl carbonate is present in the electrolyte composition at 1.0 part by weight based on 100 parts by weight of the electrolyte composition; and wherein the propane-1,3-sultone is present in the electrolyte composition at 1.5 parts by weight based on 100 parts by weight of the electrolyte composition.

The application discloses a sewage treatment filtering membrane and a preparation method thereof, and relates to the technical field of membrane materials. In the preparation of the sewage treatment filtering membrane, an amphoteric ion intermediate is reacted with 1,3-propane sulfone lactone to obtain an amphoteric ion monomer; the amphoteric ion monomer and N,N-methylene bisacrylamide are in-situ cross-linked and polymerized in a polyvinylidene fluoride solution to obtain a casting solution; the casting solution is used to prepare a functionalized polyvinylidene fluoride membrane through a non-solvent induced phase separation technology; hydrochloric acid dopamine and polyethylene imine are co-deposited on the surface of the functionalized polyvinylidene fluoride membrane to obtain a porous polyvinylidene fluoride membrane; and copper sulfate pentahydrate is used to catalyze modified indole derivatives to be grafted on the surface of the porous polyvinylidene fluoride membrane, so as to obtain the sewage treatment filtering membrane. The sewage treatment filtering membrane prepared by the application has excellent hydrophilic, anti-pollution and antibacterial properties.

The present invention discloses a high-ionic conductivity lithium-ion battery separator and a preparation method thereof, relating to the technical field of battery separators. In preparing the high-ionic conductivity lithium-ion battery separator, the present invention comprises the following steps: reacting chitosan porous microspheres with 1,3-propane sultone to produce functionalized chitosan porous microspheres; polycondensing functionalized dimethoxysilane, mercaptopropylmethyldimethoxysilane, and dimethyldichlorosilane to produce functionalized polysiloxane; reacting polypropylene with 1,4-diamino-2-butene to produce pre-modified polypropylene; reacting pre-modified polypropylene with formaldehyde and allyl hypophosphorous acid to produce modified polypropylene; and uniformly mixing the modified polypropylene, functionalized chitosan porous microspheres, functionalized polysiloxane, and azobisisobutyronitrile, and performing melt electrospinning to produce the high-ionic conductivity lithium-ion battery separator. The high-ionic conductivity lithium-ion battery separator prepared by the present invention has excellent ionic conductivity, flame retardancy, and mechanical properties.