44 results about "Ether oxygen" patented technology

The invention discloses a low-concentration ether electrolyte adaptive to a high-voltage high-nickel ternary lithium ion battery, a preparation method of the low-concentration ether electrolyte and the lithium ion battery, and relates to the technical field of batteries. The ether electrolyte comprises a solvent and a solute; the solvent comprises an ether solvent, and is specifically at least one of 4-cyano tetrahydropyran, 2-(tetrahydro-2H-pyran-4-yl) acetonitrile, 2-methoxyacetonitrile, 2-ethyoxyl acetonitrile, 3-methoxypropionitrile, 3-ethyoxyl propionitrile, 3-butoxyl propionitrile, ethylene glycol bis (propionitrile) ether and 3-{2-[2-(2-cyano ethyoxyl) ethyoxyl] ethyoxyl} propionitrile. The ether solvent contains cyano groups, the strong electronegativity of the cyano groups enables the cyano groups to be coordinated with transition metal ions in the ternary material, and the cyano groups are preferentially adsorbed at the interface of the positive electrode material, so that the arrangement of solvent molecules at the interface has directivity, the proportion of ether oxygen bonds and carbon hydrogen atoms in double electric layers is reduced, and the performance of the positive electrode material is improved. And the sites which are easy to generate dehydrogenation reaction in the molecules are far away from the high-voltage positive electrode interface which is easy to generate oxidation reaction.

The present invention belongs to the field of polymer materials and provides a method for the high-value recycling of waste nylon. Specifically, nylon recovered from products such as waste fishing nets, textiles, oil pipes, and oil cups is depolymerized by small molecule acids containing ether oxygen bond structures to obtain carboxyl-terminated oligomeric nylon chain segments, which are then further reacted with polyether components to prepare polyetheramide elastomers. The present invention not only broadens the recycling and treatment ideas for waste nylon, reduces environmental pollution caused by nylon waste, but also transforms waste nylon into high-value polyetheramide elastomers. Compared with the current nylon recycling routes and polyetheramide synthesis routes, it has the advantages of simple process flow and equipment, short reaction cycle, and low energy consumption, and the obtained products have excellent comprehensive properties.

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

The invention discloses a high-ionic-conductivity polymer electrolyte with strong sodium metal compatibility and a preparation method thereof, and the high-ionic-conductivity polymer electrolyte comprises a three-dimensional cross-linked polymer network formed by free radical polymerization cross-linking of an ether oxygen-containing cross-linking agent or an ether oxygen-containing polymerizable monomer; and, a deep eutectic solvent dispersed in the polymer network; wherein the deep eutectic solvent is formed by at least one sodium salt and at least one hydrogen bond donor and / or hydrogen bond acceptor according to a predetermined molar ratio, and the mass fraction of the deep eutectic solvent in the electrolyte is 50-80 wt%. And high room-temperature sodium ion conductivity is realized while the solid-state / quasi-solid-state safety is maintained. Compared with the traditional PEO-based solid sodium electrolyte, the total ionic conductivity greater than or equal to 2 mS / cm can be realized at room temperature, and is obviously superior to the typical 10 <-5 >-10 <-4 > S.cm <-1 > level; meanwhile, the mechanical strength and the shape retention which are obviously higher than those of a pure gel system are still kept, so that the conductivity and the safety are both considered.

The application relates to the technical field of gas separation membrane materials, and discloses a preparation method of a composite membrane, the composite membrane and application of the composite membrane in the field of carbon dioxide separation. The method comprises the following steps: S1, soaking a base film in an acyl chloride solution; S2, soaking the product obtained in step S1 in a solution containing a diamine monomer and an acid absorbent to perform an interfacial polymerization reaction, wherein the diamine monomer contains an ether oxygen chain segment, and the number of ether oxygen bonds is greater than or equal to 2; and S3, drying the product obtained in step S2. The method is characterized in that the base film is soaked in the acyl chloride solution to uniformly spread the acyl chloride on the surface of the base film, and then the base film is soaked in the solution rich in the ether oxygen chain segment diamine monomer, so that the acyl chloride and the ether oxygen chain segment rich diamine monomer utilize the interfacial polymerization reaction to obtain the ether oxygen chain segment rich polyamide composite membrane which is excellent in permeation performance and separation performance.

Provided is a fluorine-containing ether compound represented by Formula (1). R1—CH2—R2—CH2—R3 (1) R2 represents a perfluoropolyether chain. R1 and R3 represent an end group having one to four polar groups and 1 to 50 carbon atoms. At least one of R1 or R3 represents an end group represented by Formula (2). —O—X—CH(OH)—CH2OH (2) X represents a divalent organic group having 2 to 30 carbon atoms, which may have at least one of one or two polar groups or one to three ether oxygen atoms. X has at least one carbon atom which is not bonded to any of the polar groups and the ether oxygen atoms.

The preparation method comprises the following steps: S1, preparation of a precursor solution: adding a segmented copolymer, a supramolecular monomer, an inorganic filler, a lithium salt system and a cross-linking agent into a DMF / acetone mixed solvent in proportion, and stirring for dissolving to obtain the precursor solution with the solution concentration of 5-15 wt%; s2, gradient volatilization film formation: uniformly coating the precursor solution on the surface of a base material, regulating and controlling the volatilization rate in three sections at the interval of 30-60 DEG C, and forming an electrolyte film with a vertical orientation nano-channel structure at the relative humidity of 30-70%; s3, hot-pressing cross-linking treatment: placing the electrolyte membrane subjected to gradient volatilization molding in a hot press, maintaining for a period of time under the hot-pressing conditions of 100-150 DEG C and 2-10 MPa, carrying out ring-opening cross-linking reaction on anhydride groups in a cross-linking agent and hydroxyl groups and ether oxygen groups in a block copolymer matrix, and controlling the cross-linking density to be 0.5-3 mol / m < 3 >, so as to obtain the electrolyte membrane. And finally obtaining the polymer solid electrolyte membrane with the multi-scale synergistic structure.

The application discloses a gel polymer electrolyte and a preparation method and application thereof. The gel polymer electrolyte comprises monomers, an initiator, a lithium salt and an organic solvent. The monomers are provided with ether oxygen functional groups and carbonyl functional groups capable of conducting Li+. The initiator is selected from one of tin triflate and stannous octoate. The total mass ratio of the initiator and the monomers is 0.1-10:90-99. The mass ratio of the organic solvent and the lithium salt is 2-5:1. The application can realize the stability of the material to lithium metal without using a free radical polymerization mode represented by azobisisobutyronitrile, and can solve the problems of chemical reactions caused by initiator products and side reactions of residual active monomers by adjusting the adding proportion among the monomers, the initiator, the lithium salt and the organic solvent.

This invention provides an inorganic-organic composite solid electrolyte membrane and its preparation method, belonging to the field of solid electrolyte membrane technology. The invention uses anisole and tetrahydrofuran as a mixed solvent to dissolve methyl-terminated PEO. Tetrahydrofuran weakens the interaction between the ether oxygen atoms on the PEO chain and anisole, promoting the dispersion of PEO in the mixed solvent and facilitating the formation of a homogeneous coating slurry. Meanwhile, methyl-terminated polyethylene oxide not only improves the loss of ionic conductivity after the sulfide solid electrolyte is composited with a non-ionic binder, but its methyl termination also inhibits the degradation effect of polyethylene oxide on the sulfide solid electrolyte, better preserving the high-performance characteristics of the sulfide. Furthermore, the addition of Li3PO4 increases the lithium ion transport rate in polyethylene oxide, thereby improving the ionic conductivity of the composite solid electrolyte membrane.

The invention discloses an organic-inorganic hybrid composite diaphragm and a preparation method thereof, and belongs to the field of battery diaphragms. The composite diaphragm comprises a base membrane and an organic-inorganic hybrid coating, the organic-inorganic hybrid coatings are coated on the two sides of the base membrane; the organic-inorganic hybrid coating comprises the following raw materials in parts by mass: 20-30 parts of modified branched polymethyl methacrylate, 10-20 parts of inorganic particles, 3-5 parts of a water-based adhesive, 1-2 parts of a dispersing agent and 40-65 parts of a solvent; and the molecular chain of the modified branched polymethyl methacrylate contains ether oxygen bonds. Modified branched polymethyl methacrylate can effectively prevent inorganic particles from falling off in the circulation process, a composite system is formed, the porosity of the diaphragm is improved, ether oxygen bonds are combined, the ion transmission efficiency is remarkably enhanced, and the performance of the diaphragm is improved by optimizing a physical channel, enhancing interface wettability and dynamically regulating and controlling an ion transmission path. And the rate capability and the cycling stability of the battery when the diaphragm is applied to the lithium ion battery are obviously improved.

The invention provides a hydroxyl aryl uracil compound and application thereof, the structure of the hydroxyl aryl uracil compound is as shown in formula (I), in the formula (I), R1 and R2 are respectively and independently selected from C1-C4 alkyl, C1-C4 halogenated alkyl and the like; x and Y are respectively and independently selected from hydrogen atoms, halogen atoms and the like; z is selected from oxygen atoms or sulfur atoms; a is selected from-CH or a nitrogen atom; l is selected from a substituted or unsubstituted first group, and the first group is selected from C3-C8 cycloalkyl,-Ra-Rb-,-Rb-Rc-,-Ra-Rb-Rc-or a C2-C20 carbon chain containing 1 to 6 ether oxygen atoms. The hydroxyl aryl uracil compound has the advantages of being high in selectivity, wide in weeding spectrum, low in production cost and the like, weeds are not prone to generating resistance, and particularly has a good control effect on gramineous worst weeds such as goosegrass, barnyard grass and moleplant seeds.

The invention discloses a copper alloy passivation pretreatment pickling activator. The copper alloy passivation pretreatment pickling activator comprises the following components in percentage by weight: 61.0%-63.8% of water, 10.0%-15.0% of citric acid, 10.0%-12% of sulfamic acid, 1.0%-2.0% of tween-20, 2.0%-3.0% of hydrogenated castor oil polyoxyethylene ether-20, 5.0% of glycerin, 0.2% of phenoxyethanol and 3.0%-6.0% of polyethylene glycol-600. The invention relates to mercaptan water system protection. In the formula, a nonionic surfactant with the hydrophilic-lipophilic balance value of 13 or above is selected, the acting force between hydroxyl oxygen or ether oxygen and copper atoms on the surface of the copper alloy is mainly hydrogen bonds, the hydrophilicity is higher than the lipophilicity, a layer of temporary anti-oxidation protective film can be formed on the copper alloy, the protective film can be replaced in a passivation solution, and the anti-oxidation effect is good. By the adoption of the passivation solution, the protective film on the surface can be removed through acid pickling to prepare for next passivation, and meanwhile a temporary protective film capable of being replaced by the passivation solution in the next step can be formed for copper.

The invention discloses a preparation method of a reverse osmosis membrane with high desalination rate and high selectivity, a nonionic surfactant polyethylene glycol monododecyl ether capable of reacting with trimesoyl chloride is introduced into an organic phase, a newly generated monomer has the performance of a surfactant, and a monomolecular layer aggregate can be formed at a two-phase interface; an acyl chloride group in trimesoyl chloride and an ether oxygen group in the new monomer are polar groups, and the amine monomer is promoted to be gathered at a phase interface under the action of high dipole moment; meanwhile, a non-ionic surfactant in the organic phase reacts with trimesoyl chloride to generate a new monomer, so that the reaction of trimesoyl chloride and an amine monomer can be promoted, and the new monomer can react with the amine monomer to fill a low selection region in the separation layer. The preparation method provided by the invention is simple and easy to amplify, does not change the existing reverse osmosis preparation process, and is easy to directly produce on the existing production line.

The present invention discloses a heavy ion microporous membrane for a self-regulated atmosphere fresh-keeping box and a preparation method thereof, relating to the technical field of self-regulated atmosphere membranes. This application uses a polyethylene microporous membrane as a substrate. First, a polydopamine adhesion layer is formed on the membrane surface through a dopamine self-polymerization-crosslinking reaction, thereby improving the hydrophilicity of the membrane surface and preventing pore clogging by nanomaterials. Next, amino polyether is used to form a covalent bond graft modification with polydopamine, and a block polyether-modified silicone oil containing a tertiary amine and an ether oxygen bond is introduced to improve the membrane's selectivity for carbon dioxide. Finally, a nano-inorganic substance is used to form an infiltration layer to improve the membrane surface wettability and avoid inorganic mineral clogging and agglomeration problems. This layered structure not only does not damage the membrane flux and strength, but also improves the overall mechanical strength of the heavy ion microporous membrane.

The application discloses an easy-to-clean thermoplastic polyurethane pressure-sensitive adhesive and a preparation method thereof. The easy-to-clean thermoplastic polyurethane pressure-sensitive adhesive comprises the following raw materials in parts by mass: A. polyethylene glycol: 100 parts; B. polyisocyanate: 26-40 parts; C. chain extender: 20-36 parts; D. retarder: 1-2 parts; E. catalyst: 0.1-0.5 parts; F. antioxidant: 0.1-0.5 parts; G. hydrolysis stabilizer: 0.1-0.5 parts; and H. flame retardant: 1-5 parts. The application is prepared from polyethylene glycol, diisocyanate, chain extender and catalyst and the like, and the introduction of a suitable main chain structure and chain extender in the preparation process of the polyurethane pressure-sensitive adhesive can effectively improve the hydrophilicity of the polyurethane pressure-sensitive adhesive. The ether oxygen bond of the polyethylene glycol is easy to bend and fold, and water molecules are easy to form hydrogen bonds with the ether oxygen bond, thereby showing good hydrophilicity. The pressure-sensitive adhesive is particularly suitable for the processing technology of optical elements such as lenses and spectacle lenses.

An embodiment of the present disclosure provides a leveling agent, which is specifically a polypyridine compound, where the polypyridine compound includes a structural unit shown in Formula (I) or a protonated product of the structural unit shown in Formula (I):In Formula (I), R1 and R2 are independently any one of the following: substituted or unsubstituted alkylene, substituted or unsubstituted arylene, substituted or unsubstituted arylene alkyl, substituted or unsubstituted alkylene aryl, alkylene containing an ether oxygen atom, ester, and / or imide, arylene containing an ether oxygen atom, ester, and / or imide, arylene alkyl containing an ether oxygen atom, ester, and / or imide, and alkylene aryl containing an ether oxygen atom, ester, and / or imide; and R3 is any one of groups such as a single bond, substituted or unsubstituted alkylene, substituted or unsubstituted arylene, substituted or unsubstituted arylene alkyl, and substituted or unsubstituted alkylene aryl.

The invention relates to the technical field of rechargeable magnesium batteries, and particularly provides a high-safety rechargeable magnesium battery diaphragm for inhibiting magnesium dendrites as well as a preparation method and application of the high-safety rechargeable magnesium battery diaphragm. A high-safety rechargeable magnesium battery diaphragm capable of inhibiting magnesium dendrites is prepared from a first component and a second component through electrostatic spinning, the first component is one or more of nylon-based derivatives, and the second component is one or more of nylon-based derivatives. And the second component is one or more of polysaccharide or polyester derivatives containing polar group carboxyl, sulfonic group, hydroxyl, ether oxygen group or ester group. Through an electrostatic spinning technology, the nanofiber composite battery diaphragm with a spider network structure is obtained, and the nanofiber composite battery diaphragm has excellent electrolyte wettability, tensile strength and thermal stability. According to the invention, cellulose or polyester derivatives rich in polar functional groups are introduced on the basis of nylon derivatives with good chemical stability, and the solvation structure of the electrolyte is regulated and controlled through the dipole-dipole interaction of diaphragm polymer molecules and the electrolyte solvent, so that the desolvation of magnesium ions is accelerated; and thus, the magnesium ion deposition behavior is improved to inhibit the growth of magnesium dendrites, and the cycling stability and safety of the battery are greatly improved.

The present application provides a kind of small size carbon crystallite high magnification lignin-based hard carbon and its preparation method and application, the method of the present application utilizes carboxylated lignin as carbon source, with ether oxygen bond-containing polymer as crosslinking agent, by mechanical hot-pressing rapid oxidation crosslinking and high temperature carbonization to prepare lignin-based hard carbon material with small size carbon crystallite.The preparation process of the present application method, mechanical hot-pressing avoids solvent use, and promotes the crosslinking of lignin and ether high molecule.The carboxyl group of carboxylated lignin and the end hydroxyl group of ether high molecule form ester bond, and at the same time, non-covalent crosslinking is carried out through hydrogen bond interaction between oxygen groups, which significantly improves the oxygen crosslinking degree.In the high temperature carbonization process, the highly crosslinked structure hinders the growth of carbon layer, can inhibit the growth and rearrangement of carbon crystallite, and form hard carbon with small size carbon crystallite, large interlayer spacing and high disorder.As sodium storage negative electrode, it can simultaneously improve initial coulombic efficiency, sodium storage capacity and rate, and show excellent electrochemical performance.

The present invention relates to the technical field of biomedical synthesis. Specifically disclosed are a near-infrared photosensitizer capable of being activated in a slightly acidic tumor environment and a preparation method therefor and the use thereof. The near-infrared photosensitizer capable of being activated in a slightly acidic tumor environment has a chemical structural formula as shown in any one of formula (I) to formula (VI). According to the near-infrared photosensitizer capable of being activated in a slightly acidic tumor environment, a cyanine or hemicyanine derivative with good biocompatibility and a high near-infrared light absorption capacity is used as a basic skeleton, an ether oxygen bond is introduced at the ortho position of an indole nitrogen atom as an acid-responsive group, and the ability of the photosensitizer molecules to produce active oxygen is adjusted by means of substituting different halogen atoms with R1, wherein an R2 group is hydroxyl, amino or a biomarker-responsive group. The photosensitizer of the present invention is specifically activated in tumors, has strong near-infrared absorption and fluorescence emission capabilities, has a photodynamic therapeutic effect, can realize accurate treatment of tumor sites, reduces systemic toxicity, and provides a new strategy for the accurate treatment of tumors.

The invention provides a current collector with a chemical activity interface layer. The current collector comprises a base material and the chemical activity interface layer on the surface of the base material, the substrate has activating functional groups bonded to the chemically active interface layer, the activating functional groups including cyano and amido functional groups, and the chemically active interface layer including an amine group-containing polymer. According to the invention, plasma is adopted to activate the substrate, and high-density cyano and acylamino functional groups are introduced; a catecholamine polymer precursor or an imide polymer precursor containing an ether oxygen group is uniformly conveyed to an activated surface through an atomization technology, and an ultrathin and compact interface layer which is strongly chemically bonded with a base material is constructed through a chemical reaction. The interface layer can further form chemical crosslinking with a binder in the electrode slurry, and traditional physical adhesion is converted into a physical-chemical dual anchoring mode, so that the interface peel strength is greatly improved, the problem of'demolding 'of the silicon-based negative electrode in the cycle process is solved, and the cycle life and the electrochemical performance of the battery are remarkably improved.

The invention discloses a binder, a negative plate, a preparation method of the negative plate, a battery and electric equipment. The binder comprises a polyurethane matrix, and the polyurethane matrix comprises an ether oxygen chain segment and a disulfide bond. The binder has relatively strong cohesiveness, can obviously improve the cohesiveness between negative electrode active materials when being used for a negative electrode plate, has good ion and electron conduction capability, has self-repairing capability, and can improve the stability of a battery when being used for the battery.

The application belongs to the technical field of electrolyte, and particularly relates to a benzoxazine monomer containing long ether oxygen chain segments, a benzoxazine resin, and a preparation method and application thereof. The application takes a phenol source, an amine source and paraformaldehyde as raw materials, and synthesizes a benzoxazine monomer in a solvent under heating and condensation reflux conditions. The application introduces a structure easy to transport lithium ions on a benzoxazine chain segment, thereby obtaining a new type of benzoxazine which has both the performance of traditional benzoxazine and the ability to transport lithium ions. The application solidifies the benzoxazine monomer to obtain a benzoxazine resin, and absorbs an electrolyte to form a gel polymer electrolyte. Under the synergistic action of the special structure of the benzoxazine and the electrolyte, the gel polymer electrolyte has a room temperature ionic conductivity beyond that of the electrolyte.

Naphtha, the naphtha including: ether; and hydrocarbons having 7 or more carbon atoms, where the ether has an asymmetric structure with respect to an oxygen atom constituting an ether bond, a content of the hydrocarbons having 7 or more carbon atoms is 14.0% by mass or more based on 100% by mass of a total mass of the naphtha, and a content of the ether is 20,000 ppm by mass or less in terms of ether oxygen atoms.

The present application relates to a kind of inhibiting battery gas composite electrode active material and its preparation method and composite electrode, the composite electrode active material is two-layer structure, inner layer is electrode active material, outer layer is the functional copolymer formed in situ polymerization;The functional copolymer is obtained by copolymerization including phosphorus-containing monomer, ether oxygen-containing monomer, alkenyl imidazole salt compound;The outer layer accounts for 2-10wt% of composite electrode active material.The present application makes suitable proportion of alkenyl imidazole salt compound, phosphorus-containing monomer, ether oxygen-containing monomer in-situ copolymerization on the surface of electrode active material by high-energy ball milling method, forms composite electrode active material, and the prepared composite electrode active material can effectively inhibit battery thermal runaway gas generation while ensuring electrochemical performance, efficiently improves battery safety performance.

This fluorine-containing ether compound is a fluorine-containing ether compound represented by the following formula:R1—CH2—R2—(CH2—OCH2—CR3R4—CH2O—CH2—R2)z—CH2—R5 (z represents 1 or 2. R2 is a perfluoropolyether chain. R1 and R5 are terminal groups having 1 to 50 carbon atoms and having at least one polar group. R3 and R4 may be the same as or different from each other, and are organic groups which do not include a secondary hydroxy group and a tertiary hydroxy group, include one primary hydroxy group, and have 1 to 5 carbon atoms bonded to a tetrasubstituted carbon atom. The organic group may include an ether oxygen atom between the carbon atoms, and a bonding terminal to the tetrasubstituted carbon atom may be an ether oxygen atom.)

The invention relates to a polymer separation membrane technology, in particular to a polyimide composite membrane with high CO2 selectivity and permeability, which is prepared by the following steps: by taking binary or polyamine containing ether oxygen groups as a water-phase monomer and quaternary acyl chloride or dianhydride as an oil-phase monomer, polymerizing on the surface interface of a support membrane to form a polyamide acid layer; and carrying out thermal imidization conversion to obtain the composite film with a polyimide separation layer. And the prepared composite membrane has good separation performance on CO2 / CH4 and CO2 / N2.

This invention belongs to the field of photocatalytic materials technology, specifically relating to a polymer material for photocatalytic hydrogen peroxide production and its preparation method. The preparation method of the polymer material includes polymerizing a pyridine aldehyde compound with an acylhydrazine compound having the structure shown in formula (1) in the presence of a catalyst and an organic solvent to obtain the polymer material; the pyridine aldehyde compound is selected from 2,2'-bipyridine-5,5'-dicarboxaldehyde and / or 3,3'-bipyridine-6,6'-dicarboxaldehyde. The key to this invention is the use of a pyridine aldehyde compound and an acylhydrazine compound with specific structures to polymerize the resulting polymer material. Due to its specific bipyridine structure and the presence of ether oxygen bonds in its side chains, the light absorption efficiency of the polymer material can be improved, which is beneficial for the polymer material to generate more photogenerated charge carriers with photocatalytic H2O2 production activity under light excitation, thereby significantly improving the yield of photocatalytic H2O2 production.

The present invention provides a battery additive having a structure wherein X is a polymerizable active group selected from substituted or unsubstituted C2-C6 alkenyl chains, and X is an alkyl group selected from substituted or unsubstituted C2-C6 alkenyl chains. The substituent groups are selected from one or more of halogen atoms, hydroxyl, amino, carboxyl, ester groups, acylamino, acyloxy, nitryl, cyano, ether oxy, phosphate groups, phosphite groups, sulfonate groups, sulfonyl, sulfoxide groups, sulfydryl and silane groups, Y <-> is ionic liquid anions, n is an integer of 1-6, a is an integer of 0-4, and b is an integer of 0-4. According to the invention, through the design of specific functional groups, synergic enhancement of functions such as relatively fast lithium ion transmission and interface stability is realized; an in-situ curing technology is adopted to modify an interface after direct polymerization between a lithium negative electrode and a lithium positive electrode, so that a stable solid electrolyte interface layer is constructed, the solid-solid contact compatibility is improved, the interface impedance is reduced, an efficient ion transmission path is created, and the electrochemical comprehensive performance of the battery is improved.

The invention provides ink for preparing a semiconductor film, the semiconductor film and a preparation method of the semiconductor film, and belongs to the field of semiconductors. The invention provides ink for preparing a semiconductor film. The ink comprises the following components: indium salt, polyethylene glycol, a surfactant and an inorganic solvent, the molecular weight of the polyethylene glycol ranges from 20000 to 50000, or the molecular weight of the polyethylene glycol ranges from 1000000 to 5000000; when the molecular weight of the polyethylene glycol is 20000-50000, the mass of the polyethylene glycol is 1% of the mass of the indium nitrate; and when the molecular weight of the polyethylene glycol is 1000000-5000000, the mass of the polyethylene glycol is 1-2% of the mass of the indium nitrate. A weak coordinate bond is formed by an ether oxygen group of PEG and In < 3 + >, hydrolytic agglomeration of indium salt is inhibited, the dispersed state and ordered structure of indium oxide nanocrystals are regulated and controlled, and the carrier mobility is improved by adjusting the molecular weight and dosage of polyethylene glycol.

The invention discloses a three-dimensional lithium-philic covalent organic framework with an ether oxygen side chain as well as a preparation method and application of the three-dimensional lithium-philic covalent organic framework. The covalent organic framework is prepared by taking tetra (4-formyl phenyl) methane and 2, 5-bis (2-(2-methoxyethoxy) ethoxy) terephthaloyl hydrazine as raw materials, 1, 4-dioxane and mesitylene as solvents and an acetic acid solution as a catalyst through a solvothermal method. The covalent organic framework has good crystallinity and thermal stability, the covalent organic framework is compounded with a lithium cobalt oxide positive electrode through a low-energy ball milling method, a covalent organic framework physical interface layer with multiple lithium-philic sites is constructed, construction of a functional lithium conducting interface is achieved, and the covalent organic framework is suitable for the field of lithium metal batteries.