29 results about "Trimethyl phosphate" patented technology

The invention relates to the technical field of lithium ion batteries, and discloses a high-safety semi-solid lithium battery, which comprises a positive electrode, a negative electrode, a diaphragm and a semi-solid electrolyte, the electrolyte is prepared from trimethyl phosphate, lithium bis (fluorosulfonyl) imide, cyanoethyl cellulose, a cation competitive coordination agent and an optional interface regulator; the solvation structure is regulated and controlled by utilizing a cation competitive coordination mechanism, the activity of a free solvent is reduced, and the problem of poor compatibility of phosphate and a negative electrode is solved; based on thermal reversible physical crosslinking characteristics of cyanoethyl cellulose and cations, the problem of large contact impedance between solid phases and solid phase interfaces is solved by adopting a process of high-temperature low-viscosity liquid injection infiltration and room-temperature in-situ curing molding; meanwhile, uniform deposition of lithium is induced by virtue of an electrostatic shielding effect of multivalent cations, dendritic crystal growth is inhibited, the battery has intrinsic flame-retardant characteristic, interface stability and long cycle life, and the technical problem of a high-energy battery is solved.

The invention discloses a surface protection layer of an ultrathin lithium strip as well as a preparation method and application of the surface protection layer, and belongs to the technical field of lithium batteries. The surface protection layer is formed after lithium metal reacts with a composite additive, and the composite additive is composed of solid powder and an organic solvent; wherein the solid powder is selected from one or more of dialkyl dithiophosphate or metal fluoride; the organic solvent is selected from any one of dimethyl sulfoxide, formamide, butyrolactam, acetone, 1, 4-dioxane, tetrahydrofuran, trimethyl phosphate, triethyl phosphate and propylene carbonate. The electrochemical performance of the produced lithium strip with the surface protection layer is remarkably improved, large-scale production can be achieved on the premise that existing equipment is not transformed and technological processes are not increased by means of the preparation method, the technical advantages in cost and technology are achieved, and therefore the lithium strip with the surface protection layer has a good application prospect. The surface protection layer of the ultrathin lithium strip and the preparation method of the surface protection layer have good application prospects.

The application provides a polyester fiber composite hot melt batting, a preparation method thereof and a quilt. The preparation method comprises the following steps: S1. mixing diacid, dihydric alcohol and antimony trioxide, and performing esterification reaction in a protective gas atmosphere, dehydration, adding trimethyl phosphate, and performing polycondensation reaction; the diacid comprises terephthalic acid, isophthalic acid and adipic acid, and the dihydric alcohol comprises diethylene glycol and ethylene glycol; the melt is extruded, cooled, and cut into pieces; the modified polyester piece is vacuum dried and then melt-spun and stretched; S2. the modified polyester fiber is made into a fiber web together with polyester fiber and cotton fiber; S3. three layers of the fiber web are stacked and hot-pressed, and the molten modified polyester fiber bonds the three layers of the fiber web together to form a batting. The batting is safe and environmentally friendly, and the problem of environmental pollution caused by the use of adhesive in the preparation process of the synthetic batting in the prior art is avoided.

The application provides a reaction device and method for continuously synthesizing trimethyl phosphite, and belongs to the technical field of trimethyl phosphite synthesis. The reaction device comprises a raw material tank group, a composite reaction kettle, a solvent tank, a pre-cooler, a water washing kettle, an alkali liquid buffer tank, a layered system and a rectification system. The raw material tank group comprises a methanol tank and a phosphorus trichloride tank. The raw material tank group and the solvent tank are connected with the composite reaction kettle through pipelines via the pre-cooler, and the composite reaction kettle is connected with the water washing kettle through a pipeline. The phosphorus trichloride drop-like feed is efficiently converted into a uniform liquid film by a centrifugal disc, and then the liquid film is converted into a fine jet flow by a spraying ring. The fine jet flow is instantaneously and highly intensively sheared with a strong vortex-shaped methanol / solvent flow formed through a tangential feeding pipe. The secondary intensified mixing mode replaces the macroscopic mixing limitation of a traditional stirred tank, realizes instant and uniform mixing of materials at a micro level, thereby inhibiting a side reaction and effectively improving a reaction rate.

The invention discloses a PEST-SUS304 composite material as well as a preparation method and application thereof, and belongs to the technical field of high polymer materials. The preparation method comprises the following steps: mixing terephthalic acid, isophthalic acid and antimony trioxide to prepare slurry I, and mixing ethylene glycol and trimethyl phosphate to prepare slurry II; introducing nitrogen into a reaction kettle for replacement, respectively adding the slurry I and the slurry II, stirring, and carrying out esterification reaction to obtain an esterification primary product; heating the esterification reaction product for pre-polycondensation, then adding pretreated sodium terephthalate sulfonate for final polycondensation, and then granulating to obtain the PEST polyester chip. The preparation method comprises the following steps: performing crystallization drying, melt extrusion, sheet casting, longitudinal stretching and transverse stretching on PEST polyester chips to prepare a PEST polyester film; and the PEST polyester film and the 304 stainless steel foil are subjected to heat sealing to prepare the PEST-SUS304 composite material. Compared with a traditional laminated iron composite material formed by compounding PET, the heat sealing strength of the PEST-SUS304 composite material is remarkably improved.

The invention discloses a preparation method of a flame-retardant electrolyte-containing electrolyte for a lithium ion battery, a commercial electrolyte is taken as a core, and a phosphorus flame retardant is added, so that the safety and reliability of the lithium ion battery in the use process are improved. The flame-retardant electrolyte comprises the following raw materials: triphenyl phosphate, triethyl phosphate and a commercial electrolyte. The preparation method comprises the following steps: respectively adding phosphorus flame retardants triphenyl phosphate and trimethyl phosphate into a commercial electrolyte according to different proportions, adding the composite electrolyte material to prepare a complete lithium ion battery, and carrying out electrochemical performance detection and safety performance detection on the lithium ion battery. According to the flame-retardant electrolyte provided by the invention, the flammability of the electrolyte of the lithium ion battery is reduced, the safety performance of the lithium ion battery is improved, and the flame-retardant electrolyte is suitable for the production environment of most lithium ion batteries.

The invention relates to the technical field of tail gas treatment, and discloses a tail gas deodorization device for trimethyl phosphate production, the tail gas deodorization device comprises a reaction tower, the reaction tower is internally provided with a plurality of catalytic reaction assemblies, the upper side of each catalytic reaction assembly is provided with a spray pipe, each catalytic reaction assembly comprises a fixed seat, and the fixed seat is provided with a spray pipe; the fixed seat is fixedly connected with the reaction tower, and a first catalyst storage seat and a second catalyst storage seat which are through up and down are arranged in the fixed seat; and the first catalyst storage seat is positioned on the upper side of the second catalyst storage seat. According to the invention, the first catalyst storage seat is provided with the vent hole with a larger diameter, correspondingly, the second catalyst storage seat is provided with the plurality of vent pipes which have smaller diameters and are staggered with the vent hole, and the exhaust gas can more conveniently pass through the plurality of catalytic reaction components to reach the gas outlet due to the existence of the vent hole and the vent pipes.

The invention provides a flame-retardant electrolyte additive for a power battery and a preparation process, and relates to the technical field of material processing, the additive comprises trimethyl phosphate, fluorinated phosphate, ethylene carbonate, a borate compound, a surfactant, a silane coupling agent and nano oxide particles, the addition proportion of trimethyl phosphate is 8-20%, the addition proportion of fluorinated phosphate is 10-20%, and the addition proportion of fluorinated phosphate is 10-20%. The addition proportion of the trimethyl phosphate is 12%-28%, the addition proportion of the ethylene carbonate is 18%-32%, the nano oxide particles account for 1%-4% of the total mass of the additive, and the particle size is 20-40 nanometers. According to the invention, the specific proportioning relation of the trimethyl phosphate and the fluorinated phosphate and the specific proportioning relation of the ethylene carbonate and the boric acid ester compound are accurately regulated and controlled; the high-purity flame-retardant component raw materials are matched, so that the synergistic flame-retardant effect of the flame-retardant components is ensured, the flame-retardant effect of the electrolyte is remarkably improved, and the viscosity of the additive can be strictly controlled within a reasonable range.

The invention discloses a dianion salt-based magnesium fuel cell electrolyte and a preparation method, and belongs to the technical field of magnesium fuel cells, the electrolyte is composed of dianion composite magnesium salt, propylene carbonate (PC), tetrahydrofuran (THF), magnesium fluoride (MgF) nanoparticles, 1, 3-dioxolane (DOL), diethylene glycol dimethyl ether (G2) and trimethyl phosphate (TMP) according to a specific mass percentage, and the dianion salt-based magnesium fuel cell electrolyte is prepared from dianion composite magnesium salt, propylene carbonate (PC), tetrahydrofuran (THF), magnesium fluoride (MgF) nanoparticles, 1, 3-dioxolane (DOL), diethylene glycol dimethyl ether (G2) and trimethyl phosphate (TMP) according to a specific mass percentage. The mass ratio is 1: (1.6-2.0). The preparation method comprises the four steps of composite salt preparation, solvent dehydration, salt dissolution and additive mixing, and the ionic conductivity and thermal stability of the electrolyte are improved through specific ultrasonic parameters, dehydration conditions and annealing treatment.

The invention provides a method for reducing moisture of an addition liquid in glyphosate synthesis. The method comprises the following steps: carrying out a depolymerization reaction on paraformaldehyde and a catalyst A in methanol to obtain a depolymerization liquid; adding glycine, methanol and triethylamine into the depolymerization liquid for catalytic reaction to obtain addition liquid; trimethyl phosphite is added into the addition liquid, a hydrolysis reaction is carried out, and water in addition is consumed; after reacting for a period of time, supplementing dimethyl phosphite and triethylamine to obtain a condensation solution; and adding hydrochloric acid into the condensation liquid for acidolysis to remove chloromethane, hydrogen chloride, water or other light components, cooling, adding alkali to adjust pH, crystallizing, filtering and drying to obtain glyphosate. Hydrolyzate dimethyl phosphite and methanol can be applied to the next step of reaction, so that the consumption of dimethyl phosphite and methanol in the condensation reaction is reduced; the side reaction is reduced, the glyphosate yield is increased by 6% compared with that of the prior art, and the glyphosate content reaches 98.5% or above.

The invention relates to the technical field of electrolytes, in particular to a dianion salt magnesium fuel cell non-aqueous electrolyte which is composed of the following components: composite salt, a mixed solvent, magnesium fluoride (MgF) nanoparticles, 1, 3-dioxolane (DOL), diethylene glycol dimethyl ether (G2) and trimethyl phosphate (TMP). According to the invention, a composite salt system composed of magnesium trifluoromethanesulfonate and magnesium bis (trifluoromethanesulfonyl) imide is adopted, and the ion transmission capability of the electrolyte is significantly improved through a dianion synergistic effect.

The invention relates to a low-temperature disinfectant and a production method thereof. The production method comprises the following steps: (1) preparing a sodium chloride aqueous solution with the concentration greater than or equal to 20wt%; (2) preparing a ruthenium iridium titanium electrode; (3) electrolysis: electrolyzing the sodium chloride aqueous solution in an electrolytic bath by adopting a ruthenium-iridium-titanium electrode; (4) mixing: adding an organic solvent and trimethyl phosphate into the liquid storage tank, and uniformly mixing with the disinfectant to form a mixed solution; and (5) cooling: reducing the temperature of the mixed solution to-20 DEG C to-40 DEG C by using a refrigerator, so that the sodium chloride salt is separated out from the mixed solution, and the low-temperature disinfectant is obtained. The low-temperature disinfectant provided by the invention can not be frozen for a long time under extremely cold conditions in winter in northern areas; a large number of crystals can be separated out in the preparation process, the corrosion probability of disinfected objects is reduced, and the low-temperature disinfectant saves cost and is suitable for industrial large-scale production.

The invention belongs to the technical field of flame-retardant fibers, and particularly relates to a flame-retardant polyester fiber, a preparation method thereof, a drainage material and application of the drainage material. The preparation method of the flame-retardant polyester fiber comprises the following steps: mixing a phthalic acid isomer, polyol, a flame-retardant monomer and a catalyst, and sequentially carrying out esterification reaction and polycondensation reaction to obtain a copolymer; wherein the flame-retardant monomer comprises at least one of 2-carboxyethyl phenyl hypophosphorous acid, tricarboxyethyl phosphine, p-carboxyphenyl phosphonic acid, trimethyl phosphate and triphenyl phosphate; and carrying out spinning treatment on the copolymer to obtain the flame-retardant polyester fiber. Esterification and condensation polymerization are sequentially completed in a one-pot method, separation and transfer of intermediate products are not needed, continuous conversion from raw materials to polymers is achieved, the preparation process of the flame-retardant polyester fiber is simplified, and the preparation efficiency is improved. The prepared flame-retardant polyester fiber is not easy to paste in the application process, the raw materials are green and environment-friendly, the safety is high, and the flame-retardant polyester fiber can be applied to industries such as food and medical treatment.

The invention relates to the technical field of electrochemical energy storage, in particular to an acid-free tin ion electrolyte and application thereof. The acid-free tin ion electrolyte is characterized by comprising divalent tin salt, a solvent and an organic cosolvent, the divalent tin salt is tin methanesulfonate and / or tin fluoborate, and the organic cosolvent is triethyl phosphate and / or trimethyl phosphate. The cosolvent is added into the electrolyte, so that the electrolyte has the advantages of simple components and low cost. Organic cosolvent molecules reduce the water activity, so that hydrogen evolution and corrosion can be effectively inhibited. The organic cosolvent molecules and the tin salt cooperatively regulate and control the solvation structure of tin ions, so that the electrolyte effectively prevents oxidation and hydrolysis of divalent tin ions and keeps chemical stability under the condition of not additionally adding acid, tin deposition grains can be refined, the growth direction of deposited metal tin can be regulated and controlled, compact tin deposition is realized, the surface capacity of the battery is improved, and the service life of the battery is prolonged. Therefore, the tin electrode can stably operate under high current density.

The invention discloses a sodium-ion battery electrolyte of a low-fluoro phosphate system and a sodium-ion battery, the sodium-ion battery electrolyte comprises sodium salt, a solvent and an electrolyte additive, the solvent is a low-fluoro phosphate solvent, the low-fluoro phosphate ester solvent is one or more than two of trimethyl phosphate, triethyl phosphate and / or tripropyl phosphate, wherein the trimethyl phosphate, the triethyl phosphate, the triethyl phosphate and the tripropyl phosphate are 1, 2, 3, 4, 5, 6-hexafluoro respectively. The sodium-ion battery electrolyte of the low-fluorophosphate system and the sodium-ion battery have the characteristics of high conductivity, strong compatibility and good safety.

The invention belongs to the technical field of lithium ion batteries, and provides an aluminum alkoxide-phosphate / phosphite electrolyte as well as a preparation method and application thereof. The aluminum alkoxide-phosphate ester / phosphite ester electrolyte comprises aluminum triethoxide, a phosphate ester / phosphite ester compound, an electrolyte solute and a non-aqueous solvent; the phosphate ester / phosphite ester compound is trimethyl phosphate, triethyl phosphate, triisobutyl phosphate, triphenyl phosphate, tripropargyl phosphate, tris (trimethylsilyl) phosphate, dimethyl methylphosphonate, diethyl ethylphosphonate, trimethyl phosphite, triethyl phosphite and triisopropyl phosphite, and the solvent is a solvent. The catalyst is one or more of triphenyl phosphite and tri (trimethylsilyl) phosphite. The electrolyte has good thermal stability and flame retardance under high voltage, and the safety of the battery is greatly improved; in addition, the electrolyte additive composition can inhibit the corrosion of the aluminum current collector, so that the side effect of the corrosion of the current collector on the battery is reduced.

The utility model relates to the technical field of trimethyl phosphite safety production, in particular to a tail gas treatment device for trimethyl phosphite safety production, which comprises an operation box, a spraying mechanism is mounted at the top end of the operation box, the spraying mechanism comprises a placing box and a spraying part, the spraying part is mounted at the bottom end of the placing box, and the spraying part is mounted at the bottom end of the placing box. The spraying part is installed on the upper side of the interior of the spraying box, an air inlet pipe is arranged at the left end of the spraying box and extends to the outer side of the left end of the operation box, a C-shaped pipe is installed on the right side of the spraying box, a water collecting box is arranged on the bottom side of the spraying box, and a purification mechanism is installed on the bottom side of the interior of the operation box and comprises a purification box and a screen. Primarily treated tail gas can be conveyed through a C-shaped pipe on the right side of the spraying box to be matched with a purification box on the bottom side to be purified, operation can be carried out continuously through the design, resource consumption is reduced, inactivated activated carbon can be taken out through an extension rod to be replaced, and therefore the applicability of the device is improved.

The invention discloses a preparation method and application of a PDMS (Polydimethylsiloxane)-HA-BMP2 film. The preparation method comprises the following steps: uniformly stirring a PDMS prepolymer and a cross-linking agent, centrifuging to remove bubbles, pouring into a container with abrasive paper attached to the bottom, heating, curing, naturally cooling, and stripping the abrasive paper to obtain a PDMS film with one rough surface and the other smooth surface; the obtained film is disinfected, washed and irradiated by an ultraviolet lamp to obtain a PDMS elastic substrate; the preparation method comprises the following steps: mixing calcium nitrate tetrahydrate and trimethyl phosphate according to a Ca / P ratio of 1.67 to obtain HA sol, aging, immersing PDMS, taking out, rotating to uniformly coat the sol on the surface, drying, and carrying out heat treatment to obtain a PDMS-HA film; and placing the film in a BMP2 solution, and incubating at 4 DEG C for 24 hours to obtain the PDMS-HA-BMP2 film. The PDMS-HA-BMP2 thin film has a good promotion effect on proliferation and osteogenic differentiation of the mesenchymal stem cells.

The application discloses a method for manufacturing an aluminum alloy extrusion die from powder metallurgy die steel, and belongs to the technical field of aluminum alloy extrusion die manufacturing. The method comprises the following steps: preparing a binder by using itaconic acid and trimethyl phosphate modified epoxy resin glue; putting metal powder, additives and the binder into a mixing device and mixing them thoroughly; the metal powder comprises 93-95% of spherical powder and the rest of irregularly shaped powder; performing press forming to obtain an aluminum alloy extrusion die blank; performing sintering on the aluminum alloy extrusion die blank; performing quenching treatment; and performing surface polishing to obtain the aluminum alloy extrusion die. Through the above method, the aluminum alloy extrusion die prepared by the application has high thermal fatigue resistance, high impact toughness, and the hardness meets the requirements (≥50HRC). No obvious cracking and peeling phenomenon occurs on the surface of the die, and the service life is longer.

This invention relates to the field of electrolyte technology, specifically to a non-aqueous electrolyte for dual-anionic magnesium salt fuel cells, comprising the following components: a composite salt, a mixed solvent, magnesium fluoride (MgF₂) nanoparticles, 1,3-dioxolane (DOL), diethylene glycol dimethyl ether (G2), and trimethyl phosphate (TMP). This invention utilizes a composite salt system composed of magnesium trifluoromethanesulfonate and magnesium bis(trifluoromethanesulfonyl)imide, which significantly enhances the ion transport capacity of the electrolyte through a dual-anionic synergistic effect.

This invention relates to the field of deodorization equipment technology, specifically to a deodorization device and method for trimethyl phosphite distillation tail gas. It includes a spray tower, within which spray pipes and nozzles installed at the lower ends of the spray pipes are arranged. A dynamic demisting packing layer is provided at the top inner part of the spray tower. The dynamic demisting packing layer comprises multiple thin plates arranged parallel and at equal intervals at the top inner part of the spray tower. Adjacent thin plates form a tail gas channel for the tail gas to pass through. The spray direction of the nozzles is towards the upper end of the thin plates and the upper port of the tail gas channel. A driving mechanism is also provided within the spray tower to drive the thin plates to reciprocate within the spray tower, periodically changing the flow cross-section of the tail gas channel formed by adjacent thin plates. This invention effectively solves the problems of liquid flow deviation and asynchronous gas-liquid distribution in traditional packing layers by periodically reciprocating the thin plates and alternately changing the cross-sectional shape of the tail gas channel.

The invention provides a method for preparing trimethyl phosphate without adding alkali, and relates to the technical field of trimethyl phosphate preparation, dimethyl phosphate and methanol are used as raw materials, a solid acid catalyst is added, and the dosage of the solid acid catalyst is 5-6 wt% of the mass of the dimethyl phosphate; the method comprises the following steps: mixing dimethyl phosphate, methanol and a solid acid catalyst to form a uniform reaction system, wherein the molar ratio of dimethyl phosphate to methanol is 1: (3-4); under the condition of normal pressure or pressurization, the temperature of the reaction system is kept at 25-130 DEG C through heating or illumination, and transesterification reaction is carried out for 20-60 minutes; after the reaction is finished, removing by-product water generated by the reaction, and recovering unreacted methanol; and carrying out vacuum reduced pressure distillation on the separated product, collecting trimethyl phosphate fraction, decolorizing and drying to obtain a trimethyl phosphate finished product.

The invention discloses a sodium-ion battery electrolyte, a preparation method thereof and a sodium-ion battery. The electrolyte comprises a solvent including a strong solvent and a weak solvent, the strong solvent is selected from one or two of trimethyl phosphate, ethylene glycol dimethyl ether, diethylene glycol dimethyl ether and tetrahydrofuran, and the weak solvent is selected from one or two of 1, 1, 2, 2-tetrafluoroethyl-2, 2, 3, 3-tetrafluoropropyl ether, bis (2, 2, 2-trifluoroethyl) ether and diethyl carbonate; the solute is dissolved in the solvent and comprises a first solute and a second solute, the first solute comprises at least one of sodium hexafluorophosphate, sodium perchlorate and sodium bis (fluorosulfonyl) imide, the second solute comprises at least one of sodium nitrate, sodium difluoro (oxalato) borate and sodium tetrafluoroborate, the concentration of the first solute is 1.0-2.0 mol / L, and the concentration of the second solute is 0.01-0.1 mol / L. According to the sodium ion battery prepared from the electrolyte provided by the invention, side reaction between an electrode and the electrolyte is prevented, and continuous consumption of the electrolyte and thickening of a CEI layer are prevented, so that the electrode structure is stabilized.

The invention discloses a self-supporting high-pressure-resistant flame-retardant solid polymer electrolyte as well as a preparation method and application thereof, and belongs to the technical field of solid-state batteries. The electrolyte comprises a polyvinylidene fluoride-hexafluoropropylene (PVDF-HFP) polymer, a lithium salt, lithium aluminum titanium phosphate (LATP) ceramic powder and a trimethyl phosphate (TMP) solvent. Rich Lewis acid sites on the surface of the LATP powder can interact with PVDF-HFP, so that the stability of an electrode / electrolyte interface is enhanced, and the high-voltage resistance is improved; tMP is used as a flame-retardant solvent, so that the thermal safety and non-inflammability of the electrolyte are remarkably improved; the lithium salt is compounded by lithium difluoro (oxalato) borate (LiDFOB) and lithium bis (trifluoromethanesulfonimide) (LiTFSI), so that the ion transference number and the electrochemical stability are synergistically improved. The solid electrolyte provided by the invention has the advantages of high ionic conductivity, wide electrochemical window, excellent flame retardant property and interface stability, and is suitable for lithium ion batteries with high energy density and high safety.

This invention provides a cationic epoxy adhesive for electronic ruggedness and its preparation method, belonging to the field of adhesive technology. In this invention, the alicyclic epoxy resin is fluorinated and modified with silane to enhance its moisture resistance, corrosion resistance, and mechanical properties; 3-mercaptopropyltrimethoxysilane is grafted onto polydimethylsiloxane under ultraviolet light to improve its compatibility and toughness; the reaction of hyperbranched polyester with trimethyl phosphate imparts flame retardancy and metal adhesion to the material; microencapsulated slow-release curing agent solves the problem of insufficient deep curing under ultraviolet light, achieving uniform curing of both the surface and deep layers; this invention combines ultraviolet and natural curing, balancing rapid setting and deep curing, significantly optimizing the material's processing efficiency, mechanical properties, and chemical stability, meeting the diverse needs of electronic ruggedness and high-performance materials.

An electrolyte, comprising: an amount of potassium hexafluorophosphate; at least one cyclic carbonate, the at least one cyclic carbonate optionally comprising at least one of ethylene carbonate and propylene carbonate; and at least one organic phosphate, the at least one organic phosphate optionally comprising at least one of trimethyl phosphate and triethyl phosphate. An electrical cell, comprising: the electrolyte according to the present disclosure, and an electrode, the electrode contacting the electrolyte. A method, comprising: any one or more of separating, disposing, or at least partially neutralizing any one or more of HF, HPO2F2, H2PO3F, an organofluorophosphate, a monofluorophosphate, an organophosphate, and a phosphonate evolved from operating an electrical cell that includes as an electrolyte any one or more of LiPF6, NaPF6, and KPF6.

The application belongs to the technical field of solid battery materials, and discloses a preparation method and application of a high-molecular polymer solid electrolyte. The preparation method comprises the following steps: (1) mixing sulfolane and polyacrylonitrile under a protective gas atmosphere, and heating and stirring to obtain a precursor solution; (2) adding propylene carbonate and trimethyl phosphate to the precursor solution, ultrasonic dispersion, then adding a lithium salt, and then centrifuging and defoaming to obtain a mixed solution; and (3) adding a crosslinking agent to the mixed solution, heating and keeping warm, and then drying to obtain the high-molecular polymer solid electrolyte. The high-molecular polymer solid electrolyte prepared by the preparation method has excellent mechanical properties and thermal stability, and meanwhile maintains high ionic conductivity, which is crucial for the performance of a solid-state battery.

The invention discloses a ternary positive electrode material of a lithium ion battery, a preparation method of the ternary positive electrode material and the battery. The preparation method comprises the following steps: grinding a hydroxide precursor containing nickel, cobalt and manganese, a lithium salt, nano aluminum oxide and nano cerium oxide into mixed powder; dissolving polyethylene glycol in ethanol, adding paratoluensulfonyl chloride for reaction, extracting reaction liquid, and drying an oily organic phase; trimethyl phosphite is added into the organic oil phase, washing and drying are performed after heating reaction, then the organic oil phase is added into concentrated hydrochloric acid for hydrolysis, and a surfactant is obtained; and adding the mixed powder into a surfactant, treating, and calcining at high temperature to obtain the ternary positive electrode material of the lithium ion battery, according to the invention, the surfactant is used for assisting in synthesis of the single-crystal ternary positive electrode material, and single-crystal particles with good dispersibility and uniform particle size are obtained; and the surface active agent is used for regulating and controlling the crystal face exposure and the particle shape of the single crystal particles, so that the lithium ion diffusion rate is improved, the lithium ion transmission dynamics is improved, and the electrode material has relatively high specific capacity and relatively long cycle life.

The invention belongs to the technical field of graphene, and particularly relates to a chitosan-based laser-induced graphene preparation method and a graphene material. According to the preparation method, trimethyl phosphate and glycerol are utilized to modify chitosan so as to improve the thermal decomposition resistance and flexibility of the chitosan, and then defoaming, film forming and laser engraving are performed in sequence, so that the graphene material which is completely green, low in cost, rapid in preparation and high in flexibility and stability is prepared. And the graphene material prepared by the method has excellent conductivity and degradability, and overcomes the technical defects of the graphene material in the prior art.