505 results about "Polyethylene oxide" patented technology

The invention provides an aerogel reinforced composite electrolyte thin film for a solid-state lithium battery and a preparation method of the aerogel reinforced composite electrolyte thin film, and belongs to the technical field of composite electrolytes.The thin film comprises a three-dimensional porous aerogel skeleton, a solid-state electrolyte compound and lithium salt nanocrystals; wherein the three-dimensional porous aerogel skeleton is prepared from inorganic oxide nanoparticles and a polymer precursor through a sol-gel method; pores of the three-dimensional porous aerogel skeleton are filled with the solid electrolyte compound, the solid electrolyte compound comprises lithium lanthanum zirconium oxide nanowires and a polyoxyethylene-lithium salt composite matrix, and the lithium lanthanum zirconium oxide nanowires are directionally arranged in the thickness direction of the film; the lithium salt nanocrystals grow on the surface of the pore wall of the three-dimensional porous aerogel in situ; the mass ratio of the aerogel skeleton to the solid electrolyte compound is (1: 3)-(1: 15). According to the thin film, the ionic conductivity, the mechanical strength and the interface stability of the electrolyte are remarkably improved.

The invention relates to the technical field of solid-state lithium batteries, in particular to an intercalation type composite solid-state electrolyte as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out ion exchange, centrifugal washing, freeze drying and other processes on sodium-based montmorillonite to obtain lithiated montmorillonite nanosheets; the preparation method comprises the following steps: adding lithiated montmorillonite nanosheets and polyethylene oxide into N, N-dimethylformamide to obtain slurry A; adding a high-molecular polymer material and lithium salt into N, N-dimethylformamide to obtain slurry B; dropwise adding the slurry A into the slurry B to obtain a precursor solution; and blade-coating the precursor solution on a glass substrate, standing, carrying out vacuum drying, and demolding to obtain the intercalation type composite solid electrolyte. The process is simple, the raw materials are easy to obtain, and the obtained electrolyte has high ionic conductivity, a wide voltage window and excellent mechanical property and flame retardant property.

The invention belongs to the technical field of textile dyeing, and provides a salt-free alkali-free electrostatic spray dyeing method for cellulosic fibers, which comprises the following steps: uniformly mixing polyethylene oxide, reactive dye and solvent to obtain electrostatic dye liquor; the method comprises the following steps: dissolving a cationic modifier and an alkaline color fixing agent in water to prepare a cationic modified solution, padding a cellulose fiber fabric, and drying to obtain a cationic modified cellulose fiber fabric; and spraying the electrostatic dyeing liquid to the surface of the cationic modified cellulose fiber fabric through electrostatic spraying, and carrying out open-width steaming color fixation and cleaning to obtain the electrostatic spraying dyed cellulose fiber fabric. The electrostatic spraying technology is adopted to replace traditional water bath dyeing, excellent K / S value, dye uptake and color fastness can be achieved without consuming a large amount of salt, alkali and water, water resource consumption and environmental pollution are remarkably reduced, and high-salinity and high-chroma printing and dyeing wastewater is avoided.

The application relates to the technical field of solid-state batteries, in particular to a modified polyethylene oxide and a preparation method thereof, which comprises the following steps: mixing polyethylene oxide and E12 epoxy resin, and then carrying out temperature reciprocating pulse heating to control the degree of polycondensation reaction of the polyethylene oxide and the E12 epoxy resin, so as to obtain a modified polyethylene oxide solution; and evaporating and rinsing the polyethylene oxide solution to obtain the modified polyethylene oxide. According to the technical scheme, the possibility of chain degradation caused by the interfacial gap is avoided as much as possible, the ion transmission and the stability of the mechanical structure are improved, and the solid-solid interface adhesion degree is enhanced.

The invention discloses a flexible lanthanum zirconate-alumina fiber membrane as well as a preparation method and application thereof, and belongs to the technical field of inorganic nonmetal ceramic fiber materials. The preparation method comprises the following steps: dissolving zirconium oxychloride octahydrate, lanthanum chloride heptahydrate and aluminum chloride hexahydrate into absolute methanol, sequentially adding acetylacetone and triethylamine, stirring, and drying under reduced pressure to obtain a zirconium-lanthanum-aluminum polymer precursor containing triethylamine hydrochloride; soaking the zirconium-lanthanum-aluminum polymer precursor containing triethylamine hydrochloride in acetone, standing, filtering, concentrating under reduced pressure, and drying to obtain a zirconium-lanthanum-aluminum acetylacetone polymer precursor; the preparation method comprises the following steps: preparing a spinning solution from a zirconium-lanthanum-aluminum acetylacetone polymer precursor, absolute methanol serving as a solvent and polyoxyethylene serving as a spinning aid, and carrying out electrostatic spinning on the spinning solution to obtain a lanthanum zirconate-aluminum oxide precursor fiber membrane; and performing heat treatment on the lanthanum zirconate-aluminum oxide precursor fiber membrane to obtain the flexible lanthanum zirconate-aluminum oxide fiber membrane. According to the preparation method, acetylacetone is added into zirconium oxychloride, lanthanum chloride and aluminum chloride for coordination to form a linear zirconium-lanthanum-aluminum acetylacetone polymer, so that the technical problem that lanthanum zirconate long fibers with high strength and good flexibility are difficult to obtain is solved.

The present disclosure includes hyperbranched polyether polyols, such as hyperbranched poly(3-(oxiran-2-ylmethoxy) propane-1,2-diol) (HPOD), methods for their preparation and uses thereof, for example, as a cryoprotectant, lyoprotectant or stabilizer.

The invention relates to a renewable industrial flue gas carbon dioxide adsorbent and a preparation method thereof. The method comprises the following steps: S1, mixing alkali metal, an aluminum oxide precursor, silicon oxide and a first solvent, or mixing an alkali metal solution, the aluminum oxide precursor, the silicon oxide and an optional second solvent, and then molding the mixed material to obtain microsphere particles; s2, mixing the microsphere particles and organic amine, and carrying out first loading treatment and drying treatment to obtain an organic amine loaded material; s3, roasting the organic amine-loaded material, mixing the obtained roasted material with a carrier material, and carrying out second loading treatment, so as to obtain the carbon dioxide adsorbent, the carrier material is selected from at least one of polystyrene-polyacrylic acid-polyethylene oxide, polymethyl methacrylate-b-polystyrene, zirconium oxide and a porous ceramic material. The carbon dioxide adsorbent is relatively high in adsorption capacity and relatively good in selectivity, reproducibility and stability; and large-scale industrial production and application are facilitated.

The present invention relates to liquid aqueous detergent compositions comprising a surfactant system comprising a primary surfactant being anionic surfactant, a secondary surfactant being amphoteric surfactant and polyethylene oxide whilst the surfactant system is free of alkylbenzene sulphonates and derivatives thereof. The invention further relates to a method of cleaning a stainless-steel hard surface using the composition of the invention, as well as the use thereof.

The invention discloses a biodegradable flexible conductive high-hydrophobicity sensor substrate and a preparation method and application thereof.The preparation method comprises the steps that a polylactic acid electrostatic spinning solution and a chitosan / polyethylene oxide mixed electrostatic spinning solution are prepared on the basis of a safe and non-toxic food-grade material; the preparation method comprises the following steps: sequentially spinning by adopting an electrostatic spinning technology to form a sandwich structure flexible substrate, transferring a carbon nano tube conductive film, and tightly attaching the carbon nano tube conductive film to the surface of a polylactic acid layer of the sandwich structure substrate, thereby finally obtaining the flexible conductive high-hydrophobicity composite substrate. According to the invention, a hydrophobic-hydrophilic-hydrophobic sandwich structure is constructed through multi-layer electrostatic spinning, and a surface carbon nanotube conductive layer is cooperated, so that the substrate has high hydrophobicity, excellent conductivity and flexible tensile property. The preparation method has the characteristics of controllable process, low cost and environmental friendliness, and the obtained substrate is expected to have wide application prospects in the fields of food packaging, sensor substrates, intelligent wearing, health monitoring and the like.

The invention relates to the technical field of batteries, in particular to a high-dispersity and low-crystallinity composite solid electrolyte and an all-solid-state lithium metal battery. The composite solid electrolyte comprises a polymer matrix, a lithium salt, an inorganic filler and a quaternary ammonium salt surfactant, the mass ratio of the polymer matrix to the lithium salt to the inorganic filler to the quaternary ammonium salt surfactant is 100: (60-80): (10-20): (1-15). Through the quaternary ammonium salt additive, the inorganic filler is uniformly dispersed in a polymer matrix, and the crystallinity of polyethylene oxide (PEO) is effectively reduced, so that the ion transmission performance of the electrolyte and the cycling stability of a battery are remarkably improved, and the problem that organic-inorganic interfaces between PEO and LLZTO in the composite solid electrolyte are incompatible is systematically solved; and a key technical path is provided for developing a new generation of energy storage devices with high safety, long cycle life and excellent electrochemical performance.

The invention relates to a high-voltage polyoxyethylene (PEO)-based solid electrolyte and a preparation method thereof, and belongs to the technical field of solid-state battery materials. The electrolyte is composed of a polymer substrate, an inorganic filler, a cosolvent and a lithium salt, the polymer substrate is a PEO-polyacrylonitrile (PAN) composite substrate; the inorganic filler is lithium titanium aluminum phosphate LATP, and the cosolvent is fluoroethylene carbonate FEC; the lithium salt is lithium bis (trifluoromethanesulfonic acid) imide LiTFSI and lithium difluoro (oxalato) borate LiDFOB; the dispersing agent is acetonitrile ACN. The method has the advantages that PEO and FEC are complexed to form a new structure, and room-temperature efficient operation of a single-salt (LiTFSI) system is realized; and meanwhile, LiDFOB is cooperatively introduced to construct a stable passivation layer on a positive electrode interface, FEC synchronously induces to generate LiF-rich stable SEI on a lithium negative electrode, and the interface compatibility and electrochemical stability of the electrolyte to a high-voltage electrode are remarkably improved.

The invention discloses an anti-adhesion biological polysaccharide flushing glue solution for surgical operation and a preparation method of the anti-adhesion biological polysaccharide flushing glue solution. The anti-adhesion biological polysaccharide flushing glue solution is prepared from the following raw materials in parts by mass: 5-30 parts of sodium carboxymethyl cellulose, 0.1-5 parts of polyoxyethylene with the molecular weight of 1,500,000-2,000,000 Daltons, 2-16 parts of sodium hyaluronate with the molecular weight of 1,200,000-2,000,000 Daltons and 80-100 parts of water for injection. The preparation method comprises the steps of alkalization of the natural plant fibers, carboxymethylation modification of the natural plant fibers, dissolution and mixing of prepared anti-adhesion liquid, emulsification treatment and sterilization filling. Natural plant fibers are used as raw materials, high-purity sodium carboxymethyl cellulose is prepared through a modification technology, and the sodium carboxymethyl cellulose is used as a basic framework of a glue solution and can be maintained to be incompletely degraded in an adhesion generation period in vivo, so that the stability of a physical barrier is ensured; sodium hyaluronate with the molecular weight matched with the anti-adhesion effect and polyoxyethylene for improving the strength and adhesiveness of the flushing fluid are screened and form a synergistic system with synchronous degradation and complementary strength with sodium carboxymethyl cellulose.

The invention discloses a preparation method and application of an all-solid-state lithium-sulfur battery composite solid electrolyte, and belongs to the technical field of all-solid-state lithium-sulfur batteries. The preparation method comprises the following steps: firstly, preparing organic metal framework MOF particles with an ordered porous structure by adopting an oil bath method, taking polyethylene oxide as a substrate, adding an inorganic filler to prepare a composite polymer electrolyte membrane, and adding the MOF particles on the basis of the electrolyte membrane to prepare the composite solid electrolyte CPE-MOF. The MOF material prepared by the method shows a typical cubic structure, has a micron size, has good repeatability and controllability, and lays a solid foundation for research and application of subsequent material performance. The composite solid electrolyte prepared by the invention is applied to an all-solid-state lithium-sulfur battery, and shows relatively high specific discharge capacity, stable cycle performance and good rate capability.

A gas separation membrane for permeating and separating carbon dioxide from a mixed gas containing the carbon dioxide includes: a sheet-shaped support layer; and a separation layer provided on one surface of the support layer, the separation layer having a function of selecting and separating carbon dioxide and being formed of a polymer containing a polyethylene oxide structural unit and a polysiloxane structural unit. The separation layer has an average thickness of 1 nm or more and 500 nm or less. When an XPS spectrum of the separation layer is obtained by X-ray photoelectron spectroscopy and a Si2p peak and a C1s peak included in the XPS spectrum are each subjected to waveform separation, an intensity ratio P(Si—O) / P(C—O) of a Si—O peak intensity P(Si—O) to a C—O peak intensity P(C—O) is 0.03 or more and 2.0 or less.

The invention discloses a laser-induced lignin-derived porous carbon wave-absorbing material and a preparation method thereof, and belongs to the field of material preparation and microwave absorbing materials. The method comprises the following steps: dissolving lignin in a sodium hydroxide aqueous solution, and uniformly mixing with a polyethylene oxide aqueous solution to obtain a lignin ethylene oxide solution; the method comprises the following steps: preparing a lignin membrane by using a lignin ethylene oxide solution, performing laser irradiation, washing, performing suction filtration, and performing vacuum drying to obtain the laser-induced lignin-derived porous carbon wave-absorbing material. The lignin-derived porous carbon material prepared by taking industrial waste lignin as a raw material has the performance characteristics of being harmonious, low in density, high in reflection loss and wide in wave band absorption. The preparation method is green, environment-friendly, simple to operate and low in cost, and the waste lignin in the papermaking industry is successfully converted into a high-value adjustable functional material. The method meets actual application requirements and has huge application potential in the technical field of microwave absorbing materials.

The invention relates to the field of lithium battery polyether-based electrolyte. The invention provides a polyether-based lithium battery electrolyte and a preparation method thereof. According to the preparation method, polyethylene oxide and bis (fluorosulfonyl) lithium imide are taken as main bodies, a dynamic polyether prepolymer and polyether shell layer aluminum oxide nano powder are combined, and the imine bond conversion rate, the median particle size D50, the content of an organic shell layer and the unit molar ratio of lithium salt to ethylene oxide are controlled; the method comprises the following steps: preparing slurry by using an anhydrous acetonitrile system, casting, drying in stages and post-curing to obtain a film-shaped or coating-shaped electrolyte, so that the water content is not higher than 500mg / kg, the total residual organic solvent content is not higher than 1000mg / kg, the viscosity and the thickness are controllable, and the residual epoxy value is promoted to be reduced; the problem that the viscosity and the purity are difficult to consider in film casting is solved; the method is suitable for large-scale preparation of the lithium battery electrolyte membrane.

The invention relates to the technical field of batteries, in particular to a solid-state electrolyte membrane and a preparation method thereof, a solid-state battery and an electric device. The solid electrolyte membrane comprises polyoxyethylene, a lithium salt, a plasticizer and an inherent microporous polymer, the mass percentage of the plasticizer is 5%-15% and the mass percentage of the inherent microporous polymer is 5%-40% based on 100% of the mass of the polyoxyethylene. The plasticizer and the inherent microporous polymer in a specific ratio are added into the PEO matrix, and the ionic conductivity and the mechanical property of the solid electrolyte membrane are improved, so that the interface side reaction is inhibited, and the cycle performance of the battery is improved.

This invention relates to the field of polytetrafluoroethylene (ePTFE) membrane technology. Addressing the problem that existing expanded PTFE films cannot meet the high-performance standards of superhydrophobicity and superoleophobicity, this invention specifically discloses an expanded PTFE composite membrane and its preparation method. The expanded PTFE composite membrane includes an ePTFE base membrane and an fPTFE / SiO2 particle composite layer disposed on the surface of the ePTFE base membrane. The fPTFE / SiO2 particle composite layer includes a PTFE composite and SiO2 particles. The PTFE composite comprises polyethylene oxide and PTFE in a dry weight ratio of 1:10-30, and the SiO2 particles have a particle size of 100-1000 nm. By coating the ePTFE base membrane with PTFE and SiO2 particles to construct the fPTFE / SiO2 particle composite layer, and then modifying the membrane surface with silica-fluorination, the distribution of SiO2 particles can be specifically controlled to impart superhydrophobic and superoleophobic properties to the expanded PTFE composite membrane, with both water and oil contact angles >150°.

The invention provides a composite solid electrolyte based on a porous meta-aramid nanofiber membrane and a fluorinated metal organic framework. A preparation method of the composite solid electrolyte comprises the following steps: preparing a porous poly (m-phenylene isophthalamide) nanofiber membrane; the fluorinated metal organic framework is prepared through two-step heat treatment synthesis and fluorination modification; and finally, coating the nanofiber membrane with a polymer electrolyte matrix comprising a fluorinated metal organic framework, polyethylene oxide and lithium salt to prepare the composite solid electrolyte. Through the synergistic effect of the porous polyisophthaloyl metaphenylene diamine nanofiber membrane and the fluorinated metal organic framework, while the mechanical strength and dendritic crystal inhibition capability of the composite solid electrolyte are remarkably improved, lithium ion transmission is effectively promoted, and the interface impedance is reduced; the prepared composite solid electrolyte is suitable for preparing a solid lithium metal battery with high safety and high performance.

The present invention relates to super-contractible films, super-contractible wound dressings comprising the super-contractible films, methods of forming the super-contractible films, methods of treating wounds comprising steps of applying the super-contractible wound dressings, and uses of the super-contractible wound dressings. The super-shrinkable film comprises an alpha-cyclodextrin crystal domain; and oriented polyethylene oxide crystalline domains physically crosslinked by alpha-cyclodextrin crystalline domains wherein the polyethylene oxide has a number average molecular weight of from 200,000 to 10,000,000 Daltons; and after the super-shrinkable film is wetted by water, the shrinkage of the super-shrinkable film exceeds 50% of the original length of the super-shrinkable film.

The invention relates to the technical field of scale inhibitors, in particular to a scale inhibitor, a preparation method and application. The scale inhibitor is prepared from the following raw materials in parts by weight: 30 to 35 parts of acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer, 6 to 10 parts of polyepoxysuccinic acid, 5 to 8 parts of polyethylene oxide fatty alcohol ether, 5 to 8 parts of sodium dodecyl benzene sulfonate, 4 to 6 parts of nano zinc oxide, 6 to 9 parts of metakaolin hybridization regulated filling agent, 5 to 7 parts of modified nano titanium dioxide agent, 4 to 6 parts of silane coupling agent KH560 and 30 to 35 parts of deionized water. According to the scale inhibitor, raw materials are blended, the scale inhibition effect of calcium carbonate and calcium sulfate ions of a product system is enhanced, the corrosion rate and the antibacterial effect of a product are optimized, the performance coordination balance of the product is excellent, and meanwhile the temperature-resistant stability effect of the product is remarkable.

This invention provides a polymer solid electrolyte and its preparation method, belonging to the field of lithium metal battery technology. The preparation method includes the following steps: Step 1, mixing polyethylene oxide, lithium salt, and an organic solvent to obtain a first mixed solution; Step 2, loading oxide nanoparticles onto nitride nanosheets to obtain a filler; Step 3, adding the filler to the first mixed solution and stirring, then pouring the mixture into a PTFE mold and placing it in a vacuum oven at a first predetermined temperature for vacuum drying to obtain the polymer solid electrolyte. This polymer solid electrolyte exhibits high conductivity, high toughness, inhibits lithium dendrite growth, and possesses excellent thermal stability to prevent battery thermal failure, resulting in high safety.

The invention relates to a lithium manganese iron phosphate (LFMP) electrode material, an LFMP-solid electrolyte positive plate with a gradient structure design, a preparation method of the LFMP-solid electrolyte positive plate and an all-solid-state battery. The lithium manganese iron phosphate (LFMP) electrode material comprises a lithium manganese iron phosphate material, a composite binder and a solid electrolyte, the lithium manganese iron phosphate material comprises lithium manganese iron phosphate particles and a coating layer located on at least part of the surface of the lithium manganese iron phosphate, and the coating layer comprises lithium phosphate (Li3PO4); the composite binder comprises a polymer matrix and a conductive agent, the polymer matrix comprises polytetrafluoroethylene and a PEO / LiTFSI compound, and the PEO / LiTFSI compound is a compound composed of polyethylene oxide and lithium bis (trifluoromethylsulfonyl) imide. According to an electrode plate containing the lithium manganese iron phosphate (LFMP) electrode material, migration or dissolution of manganese ions is not prone to occurring in the charge-discharge cycle process, and the service life of a battery can be prolonged.

The invention provides transparent conductive hydrogel with water response shrinkage, repairability and biocompatibility as well as a preparation method and application of the transparent conductive hydrogel. The conductive hydrogel is formed by taking a dual network formed by polyethylene glycol (PEG)-alpha-cyclodextrin (alpha-CD) and polyethylene oxide (PEO) as a basis and taking polyvinyl alcohol (PVA) as a skeleton as an auxiliary material. Wherein water, as mild stimulation, can destroy directional arrangement of a crystal domain and a molecular chain in PEO so as to trigger efficient contraction, and excellent mechanical repeatability is ensured by combination between alpha-CD and PVA. In addition, the ionic liquid is added, so that the conductive strain sensing requirement is met. By adding glycerol, the gel is endowed with good water-retaining property, and the loss of water is reduced, so that the structural stability and flexibility are maintained. Meanwhile, the glycerin-water binary solvent researched and developed by the research can effectively repair dehydrated gel after long-term use, so that the performance of the gel can be completely recovered. The hydrogel can be used as a dressing for wound healing to promote wound healing. The hydrogel can tightly wrap the surfaces of soft epidermal skin, heart, tendon and other visceral organs in a conformal shape self-adaptive mode, and is used for monitoring physiological signals and motion signals, and meanwhile, the health condition of covered tissues can be visually observed.

The application discloses an organic-inorganic hybrid solid electrolyte film based on SiO2 aerogel and a preparation method, and belongs to the technical field of solid-state batteries; the organic-inorganic hybrid solid electrolyte film based on SiO2 aerogel is prepared from the following main raw material components: high-dispersion silica aerogel, lithium salt, polyethylene oxide and flame-retardant polyethylene imine; the high-dispersion silica aerogel is prepared by using N-imidazole propyl trimethoxysilane and tetraethyl orthosilicate as a silicon source by a co-precursor method; the flame-retardant polyethylene imine is obtained by reacting diethyl phosphite with polyethylene imine and then reacting with 1,3-dibromopropane; the lithium salt comprises lithium bis(trifluoromethanesulfonyl)imide; the organic-inorganic hybrid solid electrolyte film based on SiO2 aerogel prepared by the application has high ionic conductivity, excellent thermal stability, flame retardancy and electrochemical stability.

This present disclosure relates to the technical field of lithium-ion batteries, and particularly to a composite solid electrolyte, along with its methods of preparation and application. The preparation method comprises the following steps: mixing PEO, lithium bis(trifluoromethanesulfonyl)imide, and acetonitrile, subsequently adding the Prussian blue analogues, followed by stirring and ultrasonicating to obtain a mixed solution; the mixed solution is then formed into the composite solid electrolyte using the electrospinning technique. This present disclosure utilizes the Prussian blue analogues with a three-dimensional nanochannel structure and high specific surface area as a raw material. After preparation of the composite solid electrolyte, the pores of the composite solid electrolyte are larger and uniformly distributed, and the special pore structure establishes more stable and efficient ion transport channels, enabling smoother ion conduction and leading to enhanced electrochemical performance.

This invention provides a method for preparing a wide-temperature-range, high-safety, through-network structure functional fiber-based solid electrolyte, comprising: Step 1, co-dissolving polyacrylonitrile and an aldehyde-containing monomer in solvent A to prepare an aldehyde-containing functional spinning solution; Step 2, preparing an aldehyde-based fiber precursor from the spinning solution; Step 3, using the aldehyde-based fiber precursor as a template, inducing fiber surface polymerization in a system containing an ammonia-containing monomer, a proton source, and solvent B to prepare a core-shell structure COF fiber membrane; Step 4, loading an ionic liquid onto the surface of the core-shell structure COF fiber membrane to prepare an ionic liquid-functionalized COF fiber membrane; Step 5, coating the upper and lower surfaces of the ionic liquid-functionalized COF fiber membrane obtained in Step 4 with polyethylene oxide to prepare a through-network structure functional fiber-based solid electrolyte. The solid electrolyte of this invention possesses excellent mechanical strength, wide-temperature-range high stability, and fast ion transport capability, making it suitable for high-safety battery systems under extreme high and low temperature environments.

The invention belongs to the technical field of high polymer materials, and particularly relates to organic silicon modified polyurethane polystyrene foam as well as a preparation method and application thereof. The polystyrene foam comprises a component A and a component B, the component A is prepared from 40 to 60 parts of polyethylene oxide polyol, 25 to 35 parts of cashew nut shell oil polyol, 15 to 25 parts of castor oil modified polyol, 5 to 10 parts of modified resin A, 18 to 22 parts of flame retardant filler, 0.5 to 1.5 parts of foam stabilizer, 0.1 to 0.2 part of catalyst and 0.4 to 0.9 part of pure water; the modified resin A is organic silicon modified resin which contains active amido and has alkoxy at the tail end; and the component B comprises the following components in parts by weight: 75-85 parts of polymerized MDI and 15-25 parts of prepolymer A. According to the invention, an organic silicon chain segment is connected into a polyurethane network in a chemical bond manner, so that high tensile strength and high bonding strength are maintained while the elongation at break is improved, and the technical problem that the performance of the polyurethane polystyrene foam is difficult to consider at the same time is solved.

The application relates to a preparation method and application of an electrode material binder with high ion conductivity and high-voltage resistance, wherein polyethylene oxide is dissolved in deionized water, stirred for 24 hours at room temperature, and a polyethylene oxide solution is prepared; lithium salt is added; a sodium carboxymethyl cellulose aqueous solution is mixed with the polyethylene oxide-lithium salt mixed solution, stirred for 12 hours at room temperature, and an electrode material binder is obtained; the electrode material binder is mixed with a high-voltage resistant additive, and a high-ion-conductivity and high-voltage-resistant electrode material binder is obtained. The positive electrode material prepared based on the electrode material binder with high ion conductivity and high-voltage resistance has high capacity and excellent cycle stability. The modified lithium-rich manganese-based positive electrode material prepared has high ion conductivity and high-voltage resistance, the discharge specific capacity of the modified lithium-rich manganese-based positive electrode material is up to 295.51 mAh / g or more, the capacity retention rate is 102.14% after 400 cycles, and the modified lithium-rich manganese-based positive electrode material has high capacity and high cycle stability.

The invention belongs to the technical field of a lithium battery solid electrolyte, and particularly provides a cross-linked PEO-based composite solid electrolyte and a preparation method thereof, which are used for improving the mechanical strength and electrochemical performance of the PEO-based solid electrolyte. The cross-linked PEO-based composite solid electrolyte comprises poly (ethylene oxide) (PEO), lithium bis (trifluoromethylsulfonyl) imide (LiTFSI) and bis (acetylacetonate) diisopropyl titanate, the bis (acetylacetonate) diisopropyl titanate is used as a cross-linking agent, and the mass of the poly (ethylene oxide) (PEO) is used as a reference, so that the mass of the poly (ethylene oxide) (PEO) and the mass of the lithium bis (trifluoromethylsulfonyl) imide (LiTFSI) are uniformly distributed, and the mass of the lithium bis (trifluoromethylsulfonyl) imide (LiTFSI) is uniformly distributed on the basis of the mass of the poly (ethylene oxide) (PEO). The content of the bis (acetylacetonate) diisopropyl titanate is 3 to 5 weight percent of that of the polyethylene oxide. According to the invention, bis (acetylacetonate) diisopropyl titanate (TAA) is creatively provided as a cross-linking agent of the PEO-based composite solid electrolyte, and the introduction of the cross-linking agent can significantly increase the mechanical strength of PEO and increase the stability of the PEO-based solid electrolyte to lithium metal, so that the cycle life is prolonged, and the electrochemical performance is improved.