846 results about "In situ polymerization" patented technology

The invention discloses a perfluoropolyether blended PEGDE-based solid electrolyte and a preparation method thereof, and belongs to the technical field of lithium metal battery solid electrolyte materials. Adding SnCl4 and TAA into the nanocellulose precursor solution, stirring, carrying out suction filtration, and drying to obtain a SnS2 (at) NC support layer; and mixing and stirring PEGDE, LiDFOB, LiTFSI and PFPE to obtain PEGDE-based solid electrolyte slurry, coating the SnS < 2 > (at) NC supporting layer with the PEGDE-based solid electrolyte slurry, and performing in-situ polymerization in a drying oven to obtain the PEGDE-based solid electrolyte. The ultrathin perfluoropolyether blended PEGDE-based solid electrolyte prepared based on PEGDE in-situ polymerization and perfluoropolyether blending and in combination with nanocellulose enhancement has the advantages of stable anode interface, high mechanical strength, high decomposition voltage and high ion transference number.

The invention relates to the technical field of anti-counterfeiting materials, and particularly discloses a composite color-changing agent, anti-counterfeiting color-changing ink and a preparation method of the anti-counterfeiting color-changing ink. The composite color-changing agent is a composite microsphere with a core-shell-satellite structure, the core is a temperature-sensing color-changing microcapsule and is composed of a temperature-sensing color-changing core material and a polymer wall material, the shell is a transparent polymer shell and wraps the core through in-situ polymerization, the satellite is a light-sensing color-changing material and is embedded and fixed on the shell, and the shell is a transparent polymer shell and is embedded and fixed on the shell. According to the composite color-changing agent, the light-sensitive material and the temperature-sensitive material are compositely inlaid through the polymer shell, so that the problem of poor compatibility of the light-sensitive material and the temperature-sensitive material is solved, the stability and the production efficiency are improved, and the imitation difficulty is increased.

The invention relates to a composite diaphragm with a functional gradient coating and a preparation method of the composite diaphragm. The composite diaphragm comprises a porous base membrane, a solid electrolyte coating attached to one side or two sides of the porous base membrane, a mixed functional coating attached to the surface of the solid electrolyte coating, and a polymer composite coating on the outermost layer, the solid electrolyte coating comprises a first solid electrolyte and a first binder; the mixed functional coating comprises a second solid electrolyte, a high dielectric constant nano material and a second binder; the polymer composite coating comprises an in-situ polymerized polymer of a three-dimensional network structure, and a lithium salt and a third solid electrolyte which are filled in gaps of the three-dimensional network structure; the polymer is formed by initiating in-situ polymerization of polymerizable monomers through a photoinitiator. When the composite diaphragm is applied to the lithium battery, the cycle performance of the lithium battery can be improved.

An exemplary embodiment of the present disclosure provides a method for making an electrolyte, comprising: providing a solid polymer electrolyte (SPE); incorporating boron nitride with the SPE to form a composite polymer electrolyte (CPE), wherein the boron nitride is at least one of exfoliated hexagonal boron nitride (ex-BN) or fluorine-fimctionalized hexagonal boron nitride (BN-F).

The invention discloses a full-spectrum protective anti-fingerprint resin lens and a preparation method thereof. The full-spectrum protective anti-fingerprint resin lens comprises a functionalized resin base material and a gradient composite functional coating. The base material takes polyurethane acrylate as a matrix, and nano cerium oxide, nano barium titanate and nano tungsten oxide functional particles are uniformly dispersed through in-situ polymerization, so that base material intrinsic protection on ultraviolet rays, harmful blue light and near-infrared light is realized. The gradient coating comprises an adhesion promoting layer, a full-spectrum repairing and protecting layer and an anti-fingerprint layer from inside to outside, a stable composite system is formed through chemical bonding, protection is further reinforced, and the lens is endowed with super-hydrophobic and oleophobic anti-fingerprint characteristics. Through the integrated design of base material modification and coating compounding, the technical problems that an existing lens is single in protection wave band, not lasting in performance and prone to being stained with fingerprints are solved, and meanwhile the lens has high light transmittance, low reflection, excellent wear resistance and impact resistance and excellent comprehensive performance.

The invention belongs to the technical field of building materials, and provides a cement-based composite material with an organic-inorganic interpenetrating structure and a preparation method of the cement-based composite material. According to the preparation method disclosed by the invention, the monomer and the polymer containing the active group are introduced, the in-situ polymer formed by the monomer through in-situ polymerization and the polymer containing the active group form a double-network polymer, a single-network structure is refined, and the single-network structure and a cement hydration reaction product which is synchronously performed form an organic-inorganic interpenetrating structure; the interaction between double networks and the cement-based material is enhanced, meanwhile, the microstructure is optimized, the mechanical property of the single polymer modified cement-based material can be improved, the compressive strength is improved, and the breaking strength is further enhanced; the prepared cement-based composite material with the organic-inorganic interpenetrating structure has excellent breaking strength and compressive strength.

The application relates to the technical field of packaging films, and discloses an antistatic plastic packaging film and a preparation process.The antistatic plastic packaging film comprises 100 parts by weight of polyethylene, 1-6 parts by weight of phenolic resin polyaniline antistatic agent and 0.2-0.3 parts by weight of an antioxidant.The dodecyl succinic anhydride esterified phenolic resin contains carboxyl groups, can be used as a protonic acid, is doped into polyaniline through an in-situ polymerization reaction, makes imine nitrogen atoms of the polyaniline protonate, forms a charged excited state polaron, and thus the conductivity of the polyaniline is improved, the resistance of the polyethylene is reduced, and the antistatic performance of the packaging film is improved.The dodecyl succinic anhydride esterified phenolic resin and the doped polyaniline have good compatibility with the polyethylene, have a certain reinforcing effect on the polyethylene, and make the film material have higher tensile strength and elongation at break.

The invention discloses a sugar response hydrogel wound dressing based on Prussian blue nano-enzyme and bacterial cellulose as well as a preparation method and application of the sugar response hydrogel wound dressing, and belongs to the field of medical dressings and biological materials. The sugar-responsive hydrogel wound dressing is good in mechanical property, and can be subjected to cascade reaction to play antibacterial and anti-inflammatory roles. The preparation method comprises the following steps: preparing Prussian blue nano-enzyme (PBNPs) by adopting a one-pot method and utilizing a self-polymerization reaction, and preparing a Prussian blue nano-enzyme bacterial cellulose compound by utilizing an isotonic adsorption method; glucose oxidase (GOx) is loaded on BC coated PBNPs by adopting an in-situ polymerization method, the sugar response hydrogel wound dressing based on PBNPs and BC is obtained, the preparation method is simple in process, and the obtained sugar response hydrogel wound dressing is good in stability, suitable for factory production and hopeful to be applied to diabetes wound treatment. Meanwhile, the PBNPs are applied to the field of diabetic wound dressings, and the application direction of the PBNPs is widened.

The invention belongs to the technical field of building materials, and particularly relates to fly ash concrete as well as a preparation method and application thereof. The invention provides fly ash concrete. Raw materials of the fly ash concrete comprise an in-situ polymerization material and a cementing material, the cementing material comprises the following components in parts by weight: 50-80 parts of fly ash and 20-50 parts of cement; the raw materials of the in-situ polymerization material comprise a monomer, an initiator, a cross-linking agent and an accelerator, the monomer includes an amide group and an alkali metal ion.

The invention discloses a preparation method and application of a rare earth element doped ruthenium oxide catalyst, and the preparation method comprises the following steps: (1) dissolving a rare earth metal salt, a ruthenium metal salt, dopamine hydrochloride and a Tris-HCl buffer agent in water to obtain a mixed solution, and carrying out in-situ polymerization reaction, solid-liquid separation and drying to obtain a powder precursor; and (2) carrying out high-temperature calcination on the powder precursor obtained in the step (1) to obtain the rare earth doped ruthenium oxide catalyst. Rare earth metal salt and ruthenium salt precursors are dispersed on an in-situ constructed porous carbon substrate, and the rare earth element doped ruthenium oxide nanosheet is generated by oxidation under a high-temperature condition through a self-sacrifice template method. The method has the characteristics of high efficiency and no pollution. The rare earth element doped ruthenium oxide disclosed by the invention is used as a catalyst for the anodic reaction of the acidic electrolyzed water, and shows excellent catalytic activity and wide application prospect.

The invention relates to the field of lithium ion batteries, in particular to a biomass carbon / silicon / conducting polymer ternary composite negative electrode material with a hierarchical pore structure and a preparation method and application thereof. According to the material, active nano silicon is effectively limited by utilizing natural graded pore channels of biomass, and a conductive polymer layer with elastic strain buffering capability is prepared by combining a low-temperature in-situ polymerization process. According to the structure, biomass carbon pores are filled with the conductive polymer layer, the specific surface area of the material can be reduced, interface side reaction can be inhibited, and therefore the first coulombic efficiency and cycling stability of the material are improved.

The present invention relates to a preparation method for a silicon-carbon composite negative electrode material, comprising the following steps: (P1) co-polymerization: co-dissolving an unsaturated organic acid, an acrylate monomer and an acrylamide monomer in water at a specific ratio, and co-polymerizing same under the action of a sacrificial agent of a saturated organic acid and an initiator to obtain a suspension containing an acrylic copolymer; (P2) alkali treatment: performing an alkali treatment and filtration on the suspension to obtain copolymer particles; (P3) in-situ polymerization: performing in-situ polymerization of phenolic aldehyde on the surfaces of the copolymer particles to obtain a composite resin of a phenolic aldehyde-coated acrylic copolymer; (P4) heat treatment: performing a heat treatment on the composite resin in an oxidizing gas atmosphere to obtain porous carbon; and (P5) performing silicon deposition and carbon coating on the porous carbon to obtain the silicon-carbon composite negative electrode material. When the silicon-carbon composite negative electrode material prepared in the present invention is used in a lithium battery, the volume expansion of silicon can be effectively relieved, and the cycling performance and charge-discharge capacity of a lithium-ion battery are improved.

The invention relates to the technical field of new energy, in particular to a negative pole piece for a battery without a negative active material, a preparation method and application. The preparation method comprises the following steps: under the protection of inert gas, dissolving a fluoroborate-containing oxalate material in an in-situ polymerization monomer to form a solution; and then uniformly coating the surface of a metal current collector and carrying out heating in-situ polymerization to obtain the negative pole piece for the battery without the negative active material. The negative pole piece is applied to the battery, so that lithium (sodium) can be prevented from directly contacting with other components of the battery to generate side reaction, and high-temperature gas expansion of the battery is inhibited; meanwhile, the negative pole piece without the negative active material has a certain lithium (sodium) supplementing effect, can effectively induce uniform deposition of lithium (sodium) and inhibit generation of dendrites and dead lithium (sodium), and the first efficiency and the cycle capacity retention ratio of the battery are greatly improved.

The invention discloses environment-friendly wormwood cloud wool and a preparation method thereof, and relates to the technical field of cloud wool. The preparation method comprises the following steps: adding titanium dioxide powder into an ethyl sorbate solution, coating a polyethyl sorbate film through an in-situ polymerization method, hydrolyzing ethyl sorbate to release carboxyl to obtain modified titanium dioxide powder, and mixing the modified titanium dioxide powder with waste polyester and wormwood powder to form a spinning solution; secondly, N, N, N ', N'-tetramethyl-p-phenylenediamine and 6-iodine-1-hexene are subjected to a reaction to prepare quaternary ammonium salt, double bonds are introduced into a compound, then the compound and 11-mercaptoundecyltrimethoxysilane are subjected to an ultraviolet click reaction, and mercapto modified quaternary ammonium salt is prepared; sulfydryl modified quaternary ammonium salt is used as an antistatic agent to be added into a spinning solution, the environment-friendly wormwood cloud wool is prepared through wet spinning, sulfydryl modification is beneficial to uniform dispersion of the quaternary ammonium salt in the spinning solution, and uneven fiber structure or breakage caused by uneven dispersion of an additive is reduced. The environment-friendly wormwood cloud velvet prepared by the preparation method disclosed by the invention has antibacterial and antistatic effects.

The invention discloses a polyphosphazene flame-retardant electrolyte, a lithium ion battery containing the electrolyte and a preparation method of the lithium ion battery, and belongs to the technical field of lithium ion batteries. The electrolyte comprises a lithium salt, an organic solvent, a cosolvent, an additive, a cross-linking agent, a polymer monomer and a polymerization initiator, and is prepared in an in-situ or ex-situ polymerization mode. According to the polymer electrolyte or gel electrolyte provided by the invention, on the basis of various flame-retardant mechanisms of a phosphazene structure and a polymer network structure of a three-dimensional network structure, the overall thermal stability is improved, the intrinsic safety of a battery is improved, the safety risk caused by abuse, overcharge and overdischarge, needling, collision and the like is reduced, and the service life of the battery is prolonged. And a new direction is provided for further developing a multi-element composite flame-retardant material and promoting the safety of a lithium ion battery.

The invention discloses a packaging material as well as a preparation method and application thereof. The packaging material comprises the following components in parts by mass: 40-85 parts of matrix resin, 5-30 parts of phase change PCM particles, 3-20 parts of self-repairing microcapsules, 1-8 parts of an interface compatilizer and 10-20 parts of a heat-conducting network reinforcing material, the melting point of the phase change PCM particles is not more than 80 DEG C; a core layer of the self-repairing microcapsule comprises dicyclopentadiene and a ruthenium catalyst, and a shell layer of the self-repairing microcapsule comprises polyurea or polyurethane; the PCBA packaging material with the intelligent response function is formed by combining the low-melting-point phase-change PCM particles with the self-repairing microcapsule system, when the PCBA temperature is too high, the low-melting-point phase-change PCM particles are molten, junction temperature suddenly rising is restrained through melting heat absorption, meanwhile, the adjacent microcapsules are triggered to be broken through volume expansion, DCPD monomers are released and subjected to in-situ polymerization under the action of a catalyst, and the PCBA packaging material with the intelligent response function is obtained. Microcracks generated by thermal stress are rapidly repaired, and the heat dissipation stability and the electrical insulation reliability of the material in long-term thermal circulation are remarkably improved.

The invention belongs to the field of water resource purification, and particularly relates to preparation and application of a solar photo-thermal water evaporation material with ammonia resistance and salt resistance. The evaporation material comprises a porous substrate material, polyelectrolyte hydrogel loaded in the substrate material and a photo-thermal material, and the difunctional solar evaporation material with ammonia nitrogen interception and salt resistance is obtained by polymerizing different types of polyelectrolyte hydrogel and photo-thermal material on the inner and outer surfaces of the substrate in situ. The prepared polyelectrolyte hydrogel evaporation material not only can utilize solar photo-thermal efficient evaporation to produce water, but also can utilize charged groups of the polyelectrolyte hydrogel to generate Donnan repulsive interaction on ammonia nitrogen and salt ions, has ammonia nitrogen interception and salt resistance functions, and is suitable for purifying seawater and brackish water polluted by ammonia nitrogen.

The building block is prepared from the following raw materials in parts by weight: 30 to 60 parts of ardealite, 0.5 to 2 parts of lime, 10 to 30 parts of slag, 0 to 2.5 parts of silica fume, 0 to 2.5 parts of fly ash, 1 to 5 parts of cement, a water reducing agent with the mass ratio of 0.5 to 1.5 percent of ardealite, 8 to 12 parts of water, 10 to 20 parts of an acrylic acid metal salt mixed solution, 0.5 to 2.5 parts of a water repellent agent and 15 to 50 parts of aggregate, the acrylic acid metal salt mixed solution contains calcium ions or / and magnesium ions; through the in-situ polymerization synergistic effect among the cement, the lime, the inorganic active material and the acrylic acid metal salt solution, the inorganic-organic hybrid gel efficiently and stably solidifies the phosphogypsum, harmful ions are converted into insoluble and thermodynamically stable forms, and efficient and stable phosphorus, fluorine and heavy metal immobilization is achieved. The mixing amount of the phosphogypsum is as high as 30-60%, the building block has good mechanical properties, the 28-day compressive strength of the building block is greater than or equal to 30 MPa, and the breaking strength is greater than or equal to 3.5 MPa; and through surface modification treatment of the hydrophobic agent, a hydrophobic film is formed on the surface of the ardealite, the hydrophobic performance of the surface of the ardealite is enhanced, the water resistance of the ardealite is improved, and the water absorption rate of the building block is less than or equal to 5.0%. And the preparation process has the advantages of low cost, simplicity and convenience in operation, environment friendliness and the like.

The invention discloses a high-voltage chloride solid electrolyte with a stable in-situ polyacrylonitrile flexible ion transmission interface layer and a preparation method and application thereof, and belongs to the technical field of solid electrolytes. According to the invention, an in-situ polymerization reaction is initiated by using polyvalent central metal ions contained in a specific chloride solid electrolyte to generate an electrophilic induction effect on a nitrile monomer, so that a uniform and complete polyacrylonitrile artificial organic flexible ionic conductor interface layer is formed on the surface of the chloride solid electrolyte; and the crystal structure and the ionic conductivity of the chloride solid electrolyte are not damaged. The lossless interface layer can effectively enhance the electrochemical stability of the solid electrolyte, can be matched with a high-voltage lithium ion positive electrode material, can enhance the air stability of the electrolyte and the mechanical stability of an electrode-electrolyte interface, and can remarkably inhibit the generation of pores and electrode cracks at the interface; the rate capability and the cycle life of the lithium ion solid-state battery are improved.

The invention discloses a positive electrode interface layer material for an all-solid-state battery and a preparation method of the positive electrode interface layer material, and relates to the technical field of solid-state batteries. According to the interface layer material provided by the invention, an ion-electron co-conduction network is formed through in-situ polymerization, a cured interface layer with flame-retardant and interface wetting functions is constructed between positive electrode particles and a solid electrolyte, and the cured interface layer comprises the following components: a polymerizable monomer, a flame retardant, an interface wetting agent, a lithium salt, a conductive agent, an initiator and a solvent. According to the material, the polymerizable monomer, the flame retardant and the interface wetting agent are synergistically introduced in a specific manner, so that the thermal safety of the battery is remarkably improved, and meanwhile, the interface contact and lithium ion transmission kinetics between a positive electrode and a solid electrolyte are effectively improved, so that the comprehensive optimization of the safety and the electrochemical performance is realized.

The invention belongs to the technical field of conductive polymer materials, and particularly relates to a high-conductivity polypyrrole composite material as well as a preparation method and application thereof. According to the preparation method, sulfhydrylated graphene oxide is taken as a substrate, metal copper quantum dots are taken as an auxiliary material, pyrrole monomers are subjected to in-situ polymerization on the surface of the sulfhydrylated graphene oxide to form a nanosheet structure, and the sulfhydrylated graphene oxide is reduced to form the high-conductivity composite material taking polypyrrole and graphene as substrates. After the graphene oxide is subjected to sulfhydrylation modification, the copper quantum dots are more uniformly distributed on the surface of the graphene oxide, the stability of the metal copper quantum dots is improved, and the stability of the graphene oxide in the reduction and processing processes can be improved. The polypyrrole nanosheets in the high-conductivity polypyrrole composite material are vertically distributed on the surface of the graphene, so that the porosity of the composite material is improved, the specific surface area is increased, the mechanical property of polypyrrole is improved, and the stability of the morphology of the polypyrrole is favorably maintained in the processing process.

The invention discloses a preparation method of a high-strength corrosion-resistant PVDF-based composite material, and belongs to the technical field of composite materials. The method mainly comprises the following steps: (1) preparing surface nanocrystallization carbon fibers with SiO2 nano layers on the surfaces through alkali liquor activation, silanization and in-situ growth processes; (2) preparing fluorine-containing modified graphene oxide; (3) mixing the filler with PVDF resin, introducing a VDF monomer for in-situ polymerization, and constructing a chemical bonding interface; (4) respectively preparing outer layer slurry rich in nano TiO2, middle layer slurry rich in surface nanocrystallization carbon fibers and inner layer slurry rich in SiO2 coated Al2O3 core-shell nanoparticles by quantitatively supplementing specific filler; and (5) carrying out gradient tape casting, segmented drying, hot press molding and annealing treatment to prepare the composite material. The problems that a traditional PVDF material is weak in interface bonding and corrosion resistance and strength are difficult to consider at the same time are solved, and the prepared material has excellent mechanical strength and strong acid corrosion resistance.

The invention discloses a rigid-flexible coupling all-solid-state battery suitable for a high-expansion electrode and a preparation method thereof.The all-solid-state battery comprises a composite positive electrode, an all-polymer electrolyte layer and a composite negative electrode which are sequentially assembled, and in-situ polymerization polymer electrolyte networks are constructed in the composite positive electrode and the composite negative electrode; the all-polymer electrolyte layer comprises a polymer electrolyte network constructed by in-situ polymerization, a lithium salt, a plasticizer and a fast ion conductor ceramic filler; polymer electrolyte networks in the composite positive electrode, the composite negative electrode and the all-polymer electrolyte layer are of a double-network structure consisting of a rigid polymer skeleton and a flexible cross-linked polymer network. Through the integrated structural design of the all-polymer electrolyte and the composite electrode, the ionic conductivity, the interface stability, the cycle performance and the safety performance are synergistically improved, and the requirements of high energy density and high-safety energy storage are met.

The invention discloses a polyether polyurethane solid polymer, a preparation method thereof and application of the polyether polyurethane solid polymer in a solid electrolyte, and belongs to the technical field of polymer electrolytes and preparation of the polymer electrolytes. The problems that an existing solid polymer electrolyte is low in ionic conductivity and poor in interface stability are solved. According to the invention, polyether amine and cyclic carbonate are subjected to an in-situ polymerization reaction to synthesize a series of polyether polyurethane solid polymer electrolytes with different molecular weights and monomer proportions. The obtained polyether polyurethane solid polymer electrolyte contains rich carbamate groups, hydroxyl groups, fluorine ions and the like, and can form a strong reversible hydrogen bond network, so that the electrolyte has excellent mechanical properties, can be used as a self-supporting electrolyte membrane, and does not need an additional diaphragm. Meanwhile, a large number of dynamic reversible hydrogen bonds also enable the solid polymer electrolyte to have excellent self-healing ability, and can be self-repaired when the battery is damaged by external force in the operation process, so that the structural stability of the solid polymer electrolyte is remarkably improved.

The application belongs to the technical field of sodium ion battery materials, and particularly relates to a preparation method of an organic PSF modified NZZSP electrolyte material and application research of the sodium ion battery. The preparation method of the NASICON type solid-state composite electrolyte material can include the following steps: preparing a doped modified NASICON electrolyte sheet through a high-temperature solid-phase synthesis method, and then constructing an organic PSF interface coating layer on the surface of the modified NASICON electrolyte sheet through an in-situ polymerization method. The organic PSF modified NZZSP electrolyte prepared in the application effectively improves the electrochemical performance of the sodium ion battery, wherein the in-situ polymerized organic PSF modification coating layer can effectively improve the electrolyte / electrode interface contact, and can form a stable and uniform electrolyte / electrode interlayer. 2+ Partially doped and substituted Zr 4+ The Si / P ratio and Zn Benefiting from the synergistic effect of the two, the prepared organic PSF modified NZZSP electrolyte exhibits excellent capacity retention rate and cycle stability in the sodium ion battery.

The invention discloses a preparation method of an in-situ self-generated diaphragm type dual-network polymer electrolyte and a battery, and belongs to the technical field of lithium batteries. A staged in-situ polymerization strategy is adopted and comprises the following steps: firstly, applying a precursor solution containing an acrylate monomer, a polythiol cross-linking agent, a cyclic ether monomer, an initiator and a lithium salt to the surface of an electrode, partially polymerizing the solution under first initiation conditions such as transient ultraviolet irradiation and the like, and generating a layer of semi-solid gel diaphragm on the surface of the electrode in situ; then, an electrode with the gel diaphragm and a counter electrode are safely assembled into a battery; and finally, under second initiation conditions such as room temperature curing and the like, integrally curing and forming the dual-network polymer electrolyte in the battery. According to the method disclosed by the invention, physical isolation is realized by ingeniously utilizing the intermediate-state gel diaphragm, and the prepared electrolyte has high ionic conductivity, high mechanical strength and excellent interface stability, so that the assembled diaphragm-free solid-state lithium battery shows ultra-long cycle life.

The invention discloses a method for in-situ rapid growth of a dual-network hydrogel coating on the surface of a base material by a one-step method, which comprises the following steps: putting the base material with an adhesion initiation layer on the surface into a hydrogel precursor solution, and carrying out in-situ polymerization for 0.1-10 minutes under light irradiation, wherein the adhesion initiation layer comprises an adhesive compound based on a catechol group and a first photoinitiator, and the hydrogel precursor solution comprises a natural polymer containing tyrosine, an acrylic monomer, a cross-linking agent and a second photoinitiator, and wherein the first photoinitiator and the second photoinitiator are different from each other and are independently selected from a divalent ruthenium compound and a persulfate. Compared with the prior art, the natural / synthetic polymer double-network gel coating with biological activity and mechanical property can grow on the surfaces of different substrates more quickly and efficiently through a one-step method; and the base material, the surface of which is modified by the in-situ grown double-network hydrogel coating, obtained by the method can be applied to in-vivo medical apparatuses and instruments.

The invention belongs to the field of solid-state batteries, and particularly relates to a lithium metal battery, a high-voltage wide-temperature-range gel polymer electrolyte of the lithium metal battery, a preparation method of the high-voltage wide-temperature-range gel polymer electrolyte and application of the high-voltage wide-temperature-range gel polymer electrolyte. The high-voltage wide-temperature-range gel polymer electrolyte is prepared; the composite monomer comprises a monomer 1 and a monomer 2 in a weight ratio of (1-2): (1-2), the monomer 1 comprises a compound as shown in a formula 1 (1), and the monomer 2 comprises a compound as shown in a formula 2 (2); the basic electrolyte comprises a conductive lithium salt and an ester ether solvent, and the conductive lithium salt comprises LiPF6; the ester-ether solvent comprises an ester solvent, a fluorinated ester solvent and hydrofluoroether in a weight ratio of (4-5): (2-3): (2-3). The electrolyte disclosed by the invention can meet the application requirements of high pressure and wide temperature range, and the high-pressure, low-temperature and high-temperature cycling stability of the electrolyte is improved.

The invention discloses a high-ionic-conductivity cement-based material based on in-situ polymerization of double ionization monomers as well as a preparation method and application of the high-ionic-conductivity cement-based material. The material comprises a cement base material and a performance additive, wherein the performance additive comprises a functional polymer, a polymer network modifier, an initiator, a cross-linking agent, alkali metal salt and deionized water. The functional polymer is a mixture of a cationic polymerizable monomer and an anionic polymerizable monomer. The preparation method comprises the following steps: stirring and dissolving a functional polymer, a polymer network modifier, alkali metal salt, an initiator and a cross-linking agent in deionized water to obtain a modification additive, uniformly mixing the modification additive and a cement base material, merging into a mold, standing, demolding, and curing to obtain the conductive cement material high ionic conductivity cement-based material. The ionic conductivity of the material can reach 10 <-2 > S / cm or above under normal-temperature and normal-humidity conditions, and the material has high strength and is suitable for the fields of corrosion prevention, structural health monitoring, cement-based energy storage electrodes and the like.

The invention relates to a solid-state battery positive pole piece with a composite structure as well as a preparation method and application thereof. The solid-state battery positive pole piece comprises a current collector, a composite positive pole coating attached to the surface of one side of the current collector, and a composite polymer coating attached to the composite positive pole coating, the composite positive electrode coating comprises a positive electrode active material, a first oxyfluoride solid electrolyte, a binder and a conductive agent; the composite polymer coating comprises an in-situ polymerized polymer of a three-dimensional network structure, and a lithium salt and a second oxyfluoride solid electrolyte which are filled in gaps of the three-dimensional network structure; the polymer is formed by initiating in-situ polymerization of a polymer monomer through a thermal initiator; and a composite polymer coating is immersed in a gap of the composite positive electrode coating. The positive pole piece of the solid-state battery has high ionic conductivity, high interface stability and high mechanical reliability, and the cycle performance of the solid-state lithium battery can be improved when the positive pole piece is applied to the solid-state lithium battery.