40results about How to "Improve chemical performance" patented technology

The invention relates to the technical field of powder metallurgy, in particular to a method for preparing a graphene composite copper plate strip by using red copper waste through combination of powder metallurgy and a medium-temperature continuous extrusion process, and the method comprises the following steps: selecting the red copper waste containing different components according to an application scene of the graphene composite copper plate strip; crushing the red copper waste into red copper blocky crushed aggregates; adding 0.1-8% by mass of graphene into the red copper blocky crushed aggregates, and grinding to form first-size mixed powder; carrying out semi-melting stirring processing on the mixed powder with the first size to form a graphene-red copper mixed base material, and carrying out continuous extrusion treatment; and the graphene composite copper plate strip blank is treated according to a conventional red copper cold rolling process, and the graphene composite copper plate strip is obtained. According to the method, a powder metallurgy process is combined with a medium-temperature continuous extrusion process, so that the red copper waste is recycled in a non-smelting mode, and a parent body of the high-performance graphene composite copper plate strip is produced. The invention further correspondingly discloses application of the graphene composite copper plate strip.

The invention discloses nanoscale high-entropy A2B2O7 type oxide ceramic powder and a preparation method of a nano ceramic block of the nanoscale high-entropy A2B2O7 type oxide ceramic powder, and the preparation method comprises the following steps: S1, uniformly dispersing a rare earth element source and a transition metal source in deionized water, stirring at room temperature, and then adding a polymerizing agent and an inducer to obtain a mixed solution; s2, continuously stirring at room temperature to form a transparent clear solution; s3, heating the transparent clarified solution until milk white gel is gradually formed; and S4, drying the milk white gel into dry gel. According to the nanoscale high-entropy A2B2O7 type oxide ceramic powder and the preparation method of the nano ceramic block of the nanoscale high-entropy A2B2O7 type oxide ceramic powder, discharge plasma sintering is combined with a two-step preparation process, the efficiency is high, sintering is compact, the grain size of a ceramic block material can be controlled, and the nano ceramic block can be used for preparing the nano-scale high-entropy A2B2O7 type oxide ceramic powder. And the synthesized oxide has the characteristics of fine powder particle size, uniform distribution, few impurities and the like, and the method is low in synthesis temperature and relatively low in cost.

The invention relates to a low-temperature graphite negative electrode material and a preparation method thereof, and belongs to the technical field of high polymer materials. According to the prepared low-temperature graphite negative electrode material, firstly, the surface of graphite is pre-oxidized through potassium persulfate, phosphorus pentoxide and concentrated sulfuric acid, and then under the action of sodium nitrate, potassium permanganate and hydrogen peroxide, graphite oxide is prepared; then, ammonium molybdate hydrate and thioacetamide are used as a molybdenum source and a sulfur source, graphite oxide is used as a supporting material, a molybdenum disulfide-graphite compound is synthesized, and the conductivity and the cycling stability are improved; secondly, the surface of the negative electrode is coated with amorphous resin carbon / nickel oxide, so that the ion diffusion efficiency of the low-temperature graphite negative electrode material is enhanced, and the electrochemical lithium storage performance is improved in a low-temperature environment; and finally, the surface of the amorphous resin carbon / nickel oxide is coated with a layer of polythiophene film, so that the rate capability of the negative electrode material is improved due to large surface area and high pores.

The invention relates to the technical field of lithium ion batteries, and provides a lithium iron phosphate battery positive pole piece, a preparation method and a lithium ion battery. The positive pole piece of the lithium iron phosphate battery comprises a foil layer, the positive electrode coatings are coated on the front and back surfaces of the foil layer, and comprise a first positive electrode coating close to the foil layer and a second positive electrode coating far away from the foil layer; wherein the first positive electrode coating comprises a first positive electrode active material, a first conductive agent and a first binder, and the first positive electrode active material is a lithium iron phosphate material; the second positive electrode coating comprises a second positive electrode active material, a second conductive agent and a second binder, and the second positive electrode active material comprises a lithium iron phosphate material and a ternary lithium material. Through a double-layer coating technology, a ternary material with good conductivity is introduced as an outer layer, so that the conductivity of an outer layer system is improved, the resistivity of the pole piece is reduced, and the problems of large internal resistance and poor dynamic performance of a positive electrode thick coating are solved.

The invention discloses a polyimide binder for a positive electrode of a lithium ion battery and a preparation method of the polyimide binder. The polyimide binder contains cyclodextrin and sulfonic acid groups; the preparation method comprises the following steps: dissolving cyclodextrin, sulfonated diamine and triethylamine in an organic solvent, stirring until the materials are fully dissolved, and then adding dicarboxylic anhydride to obtain a sulfonated polyamide acid solution included by cyclodextrin; adding benzoic acid and a catalyst into the mixture, carrying out imidization, cooling, adding a washing solvent to separate out precipitates, and filtering to obtain a polyimide binder; the polyimide binder disclosed by the invention has excellent thermal stability and relatively high mechanical property, meanwhile, the relatively high binding strength effectively inhibits separation between the binder and active substance particles and aluminum foil, and an electrode plate prepared by adopting the obtained polyimide binder is used in a lithium ion battery, so that the service life of the electrode plate is prolonged, and the service life of the electrode plate is prolonged. And the electrochemical performance of the lithium ion battery is effectively improved.

The present invention relates to the technical field of powder metallurgy, and more particularly to a method for preparing a graphene composite copper strip by powder metallurgy combined with a medium-temperature continuous extrusion process using copper waste. According to the application scenario of the graphene composite copper strip, copper waste containing different components is selected; the copper waste is crushed into copper block fragments; 0.1-8% of graphene by mass is added to the copper block fragments, and a first-size mixed powder is formed by grinding; the first-size mixed powder is semi-melted and stirred to form a graphene-copper mixed substrate, which is continuously extruded; the graphene composite copper strip blank is processed with reference to a conventional copper cold rolling process to obtain a graphene composite copper strip. The present invention combines a medium-temperature continuous extrusion process with a powder metallurgy process to realize the recycling of copper waste in a non-smelting manner and the production of a matrix of a high-performance graphene composite copper strip. The present invention also discloses the application of the graphene composite copper strip.

The invention relates to a method for preparing artistic concrete by taking broken glass as a main raw material, which comprises the following steps of: a) treating the broken glass: cleaning recycled waste glass, and removing non-glass impurities by adopting a mechanical screening and water washing combined method; b) burdening and mixing: mixing the crushed glass slag with cement and fine sand according to a mass ratio; c) mixing and forming: putting all the materials into a concrete mixer with a speed-adjustable function, and fully stirring until the materials are uniform; then pouring the mixed concrete slurry into a pre-designed mold; and d) curing and demolding: primarily curing the poured concrete in a mold. The recycled waste glass is reasonably treated and proportioned, so that the physical and chemical properties of the concrete are enhanced, and a concrete product is more durable and stable when being used outdoors.

The invention discloses a methyl modified hydrogel electrolyte, a preparation method thereof and application of the methyl modified hydrogel electrolyte in a zinc battery, and belongs to the field of secondary batteries. The hydrogel electrolyte is composed of acrylamide, methyl cellulose and zinc sulfate. The preparation method comprises the following steps: adding methyl cellulose and acrylamide into a zinc sulfate solution, uniformly mixing, then adding a potassium persulfate initiator and a cross-linking agent N, N '-methylene bisacrylamide, finally putting into a double-layer glass plate, sealing, and carrying out thermal polymerization. The methyl cellulose has zinc affinity and can convert an acrylamide proton polymer into an aprotic polymer to weaken intermolecular hydrogen bonds, so that free hydrogen bond receptors are released to participate in cationic solvation. The solubilization and recrystallization strategy can effectively adjust the gel electrolyte environment, cut off hydrogen bonds formed by binding water donors and participate in electrolyte salt dissolution, so that the electrolyte concentration is increased, and salting-out of the electrolyte is inhibited. When the gel electrolyte is applied to the zinc battery, zinc ion migration can be accelerated, and excellent cycle performance under a low-temperature condition is realized.

The utility model relates to the field of photovoltaic technology, in particular to a multilayer composite reflective film capable of improving conversion efficiency, which comprises a reflective layer, a glass bead layer used for increasing utilization rate is arranged above the reflective layer, and a UV (ultraviolet) absorbing layer used for absorbing ultraviolet rays is adhered above the glass bead layer. A plurality of hollow transparent glass beads are arranged in the glass bead layer; the reflective layer comprises an insulating layer and a reflective tape which is arranged below the insulating layer and is of a V-shaped structure. According to the utility model, the glass bead layer capable of improving the light reflectivity is additionally arranged at the top of the reflective layer, so that the quantity of light rays reflected out of the photovoltaic glass can be further reduced, the energy loss caused by light ray deviation is reduced, and the solar energy utilization rate under different solar incident angles is improved; a triangular prism structure is formed between the glass beads and the PET base material layer and is matched with the glass bead layer, so that ultraviolet rays are fully reflected.

The invention relates to the technical field of preparation of composite nanowires, in particular to a nickel sulfide titanium dioxide composite nanowire as well as a preparation method and application thereof. The preparation method comprises the following steps: taking a nickel-containing titanium-based nanowire obtained by carrying out ion exchange on a nickel element Na2Ti3O7 nanowire as a raw material; the nickel-containing titanium-based nanowire is mixed with sublimed sulfur, and then the nickel sulfide / titanium dioxide composite nanowire is prepared through a two-step heating process. The nickel sulfide / titanium dioxide composite nanowire obtained through the technical scheme is regular in morphology, and nickel sulfide and titanium dioxide are evenly distributed; adsorption of the lithium-sulfur battery positive electrode carrier to a discharge intermediate product can be effectively enhanced, conversion of the discharge intermediate product is accelerated, the electrochemical performance of the lithium-sulfur battery is improved, and meanwhile, the process for preparing the polar transition metal compound material with the high specific surface area and the high activity is simple, and production is easy.

The invention discloses a method for recycling an environment-friendly lithium ion battery adhesive, which comprises the following steps of: firstly, crushing a waste lithium battery cell, and heating and stirring by using an organic solvent such as N, N-dimethylformamide (DMF) or dimethyl sulfoxide (DMSO) at a specific temperature to efficiently dissolve and separate out a high-purity PVDF (Polyvinylidene Fluoride) solution; then, mixing soft water, an emulsifier, maleic acid and hydroxyethyl acrylate to prepare an emulsion, mixing the emulsion with the modified sodium alginate solution, and further uniformly stirring with the PVDF solution; and adding an initiator, heating and stirring to form stable gel, and finally cooling to prepare the high-performance adhesive. According to the method, efficient recovery of PVDF in the waste lithium battery is achieved, the film forming strength, heat resistance, chemical corrosion resistance and mechanical strength of the adhesive are remarkably improved through chemical modification, and a high-performance and environment-friendly adhesive solution is provided for manufacturing of the lithium ion battery; in addition, the method reduces environmental pollution and reduces resource consumption.

The invention discloses battery positive electrode slurry and a preparation method thereof, and belongs to the technical field of batteries. Comprising the following steps: preparing a benzimidazolyl polymer; performing metal framework modification on a double-walled carbon nanotube to obtain a material B; preparing a composite glue solution; mixing the composite glue solution, the material B and a positive electrode active material to prepare battery positive electrode slurry; a conductive agent double-walled carbon nanotube is subjected to metal framework modification, a long-chain benzimidazolyl polymer is adsorbed on the surface of the double-walled carbon nanotube by adopting a benzene ring adsorption effect, the agglomeration phenomenon of the double-walled carbon nanotube is prevented by virtue of a steric effect of a long chain, and meanwhile, more metal active sites are introduced; charge transmission is promoted, the cycling stability of the electrode is improved, and the energy density is improved; polyimide with a branched structure is prepared and compounded with polyacrylonitrile to form a composite glue solution, the electrochemical performance of the battery is synergistically improved, and the battery shows excellent cycling stability, high-rate discharge capacity and energy density.

The invention relates to the technical field of alloys, in particular to a rare earth-doped high-temperature-resistant chemical-resistant alloy material and a preparation method thereof. The material comprises the following components in parts by weight: 2.34 to 4.39 parts of cerium, 1.48 to 1.96 parts of dicerium trioxide, 4.34 to 7.28 parts of europium, 2.24 to 3.54 parts of europium oxide, 1.84 to 2.68 parts of yttrium, 0.58 to 1.03 parts of yttrium oxide, 4.85 to 6.96 parts of titanium, 2.58 to 3.67 parts of titanium dioxide, 5.21 to 8.56 parts of hafnium, 2.56 to 4.32 parts of hafnium dioxide, 10.24 to 20.34 parts of nitrogen-doped tungsten carbide and the balance of nickel. The alloy material provided by the invention has excellent high temperature resistance and chemical resistance.

The present invention discloses a micro-nano bubble assisted multi-energy field coupled complex curved surface chemical mechanical polishing equipment, including a bed, a spindle system, a drum system and a numerical control system; the spindle system includes a fixture for clamping a workpiece to be polished and a spindle for adjusting the spatial position of the fixture, and polishing liquid is added to the drum of the drum system; it also includes a micro-nano bubble system and an ultrasonic system; the micro-nano bubble system is used to introduce micro-nano bubbles into the drum; the ultrasonic system is used to make the drum of the drum system perform ultrasonic vibration; the numerical control system connects and controls the spindle system, the drum system, the micro-nano bubble system and the ultrasonic system. The present invention sets a micro-nano bubble system and an ultrasonic system, uses micro-nano bubbles to increase the action area of ​​abrasive particles in the polishing liquid and the workpiece to be polished, and uses the micro-nano bubble system and the ultrasonic system to improve the mechanical efficiency and chemical efficiency of abrasive particles in the polishing liquid, promotes the synergistic effect of mechanical removal and chemical corrosion during the polishing process, and realizes improved polishing efficiency.

The invention discloses a polyurethane grouting material and a preparation method thereof, and belongs to the technical field of building waterproof materials, the grouting material is composed of polyether polyol, a functional agent, isocyanate, polyether glycol, dimethyl siloxane, polymethylene polyphenyl polyisocyanate and other raw materials, the components are mixed according to a specific weight ratio, so that the grouting material is endowed with unique performance. The preparation method comprises the steps of dehydration treatment, prepolymer reaction, mixed degassing, solvent adjustment and the like, compared with the prior art, the uniformity and stability of the grouting material are ensured, and the obtained grouting material has wide application prospects in building structure reinforcement, water prevention and sealing engineering, especially in a high-humidity or underwater environment, and has good application prospects. The excellent performance is shown.

The invention discloses an electrode assembly and a battery. The electrode assembly comprises a positive plate, a negative plate and a first diaphragm, the first diaphragm is located between the positive plate and the negative plate, and the negative plate comprises a current collector, a negative material coating and a first multifunctional coating arranged between the current collector and the negative material coating. The first multifunctional coating comprises a first ester quaternary ammonium salt, the negative electrode material coating comprises a negative electrode material, and the negative electrode material comprises hard carbon. The first multifunctional coating containing the ester quaternary ammonium salt is arranged between the current collector and the negative electrode material coating, so that the stripping force of the pole piece can be effectively improved, the powder falling rate of the pole piece is reduced, and the winding yield and the Hi-pot yield are improved. The first-circle coulombic efficiency and the cycle performance of the sodium ion battery assembled by adopting the negative pole piece provided by the invention are improved.

The invention discloses an application of a gel electrolyte in a rechargeable magnesium battery, magnesium salt in the electrolyte is a commercially available dibenzylamine magnesium chloride lithium chloride compound, a solvent is tetrahydrofuran, the concentration is 0.5 mol / L, a monomer for ring opening polymerization is 1, 3-dioxolame, and an initiator is scandium trifluoromethanesulfonate. The prepared gel polymer electrolyte has excellent magnesium anode compatibility, shows extremely low overpotential and highly reversible magnesium deposition-dissolution behavior, keeps coulombic efficiency of about 98% after 600 times of circulation, and the overpotential of a symmetric battery almost remains unchanged after 1000 times of circulation and is lower than 100 mV. And the anodic oxidation decomposition potential on the stainless steel is more than 2.5 V vs.Mg / Mg < 2 + >. The rechargeable magnesium battery gel polymer electrolyte prepared according to the application method has the advantages of simple preparation process, cheap raw materials, high magnesium deposition-dissolution efficiency, low overpotential, high safety and flexibility and the like, and a feasible way is provided for research of solid rechargeable magnesium batteries.

The present invention discloses an electrode assembly and a battery. The electrode assembly includes a positive electrode sheet, a negative electrode sheet and a first diaphragm, wherein the first diaphragm is located between the positive electrode sheet and the negative electrode sheet, the negative electrode sheet includes a current collector, a negative electrode material coating and a first multifunctional coating arranged between the current collector and the negative electrode material coating, wherein the first multifunctional coating includes a first ester-based quaternary ammonium salt, and the negative electrode material coating includes a negative electrode material, wherein the negative electrode material includes hard carbon. The present invention can effectively improve the peeling force of the electrode sheet, reduce the powder loss rate of the electrode sheet, and improve the winding yield and Hi-pot yield by arranging a first multifunctional coating containing an ester-based quaternary ammonium salt between the current collector and the negative electrode material coating. The first-cycle coulomb efficiency and cycle performance of the sodium ion battery assembled using the negative electrode sheet provided by the present invention are improved.

The invention belongs to the technical field of lithium ion battery materials, and particularly relates to a secondary modified positive electrode material and a preparation method and application thereof. The preparation method of the secondary modified positive electrode material provided by the invention comprises the following steps: 1) putting the positive electrode material into a mixed solution of cyclodextrin and potassium metasilicate, stirring, separating out a solid, and drying to obtain a primary modified positive electrode material; and 2) mixing the primary modified positive electrode material obtained in the step 1) with boric acid, and sintering to obtain the secondary modified positive electrode material. The specific preparation method provided by the invention is simplified in steps, the prepared secondary modified positive electrode material is high in specific discharge capacity, first efficiency and cycle performance, and the safety of the battery can be further improved.

The invention provides a composite adsorption material for efficiently removing U (VI) in nuclear wastewater and a preparation method thereof, the composite adsorption material is prepared by growing a defect-induced metal organic framework material UIO-66-P on a low-cost and renewable balsa wood base material in situ to form UIO-66-P at balsa wood composite aerogel, the UIO-66-P is synthesized through defect induction, and the UIO-66-P at the balsa wood composite aerogel is used for adsorbing U (VI) in nuclear wastewater. According to the preparation method, the material hydrophilicity and active adsorption sites are increased, so that the uranium ion adsorption capacity is remarkably improved, the maximum uranium adsorption capacity in a low-concentration aqueous solution can reach 594 mg.g <-1 > which is far better than that of a traditional inorganic material, a carbon-based material and an existing MOF material, and the problem of low adsorption efficiency in a low-concentration environment is successfully solved; the composite material has excellent reproducibility, can still keep efficient uranium adsorption performance after multiple adsorption-desorption cycles, remarkably reduces long-term use cost and waste generation, has wide market application prospects, and provides an efficient solution for sustainable development of nuclear energy industry.

The present invention provides a method for preparing a lithium-sulfur battery catalyst material, which is used to prepare a lithium-sulfur battery catalyst material in which atomically dispersed Ni-Co bimetallic tandem sites are coordinated with nitrogen and embedded in porous carbon, and comprises the following steps: step S1, dissolving Zn(NO3)2·6H2O, Co(NO3)2·6H2O and Ni(NO3)2·6H2O in methanol to form a mixed solution, adding 2-methylimidazole and methanol to the mixed solution, stirring and aging, and then filtering and collecting the precipitate, washing the precipitate and vacuum drying to obtain ZnCoNi-ZIF; step S2, placing ZnCoNi-ZIF in a tubular furnace and heating it to obtain a pyrolysis product, soaking the pyrolysis product, selectively removing metal particles on the surface, and vacuum drying to obtain a lithium-sulfur battery catalyst material CoNi-NC. The present invention also provides a lithium-sulfur battery catalyst material, which is prepared by the above-mentioned method for preparing the lithium-sulfur battery catalyst material. The present invention also provides the application of the above-mentioned lithium-sulfur battery catalyst material in a lithium-sulfur battery.

The present application provides an electrolyte, an electrochemical device and an electronic device, wherein the electrolyte comprises lithium bis(fluorosulfonyl)imide, a sulfur-containing compound and propyl propionate, wherein the mass percentage of lithium bis(fluorosulfonyl)imide is A%, the mass percentage of the sulfur-containing compound is B%, and the mass percentage of propyl propionate is D%, based on the mass of the electrolyte, and 0.3≤B / A≤4, 30≤D≤40. The above arrangement is conducive to reducing the risk of increased AC impedance of the electrochemical device under high voltage and improving the anti-drop performance and intermittent cycle performance of the electrochemical device.

The invention discloses a modified titanium dioxide odor-removing product applied to the field of environmental protection and a manufacturing method thereof. The product forms comprise powder, paste and spray, a light inducer and a light absorber as modified materials, the modified materials are dissolved in a solvent to form a modified impregnation liquid, the modified materials are attached to the surfaces or cavities of titanium dioxide particles through impregnation and grinding, and ultraviolet light is transmitted to the shady surface of the particles under the combined action of the two agents, so that the shady surface has a'photocatalyst 'catalytic effect. Materials used for a powdery product mainly comprise titanium dioxide particles, a light inducer, a light absorbent, a solvent and the like, an adhesive, a cross-linking agent and the like are added to a pasty material, and yttrium oxide, antibacterial perfume and the like are added to a spray product. The powder can be used for deodorizing sewage, the paste can be used for deodorizing outdoor dirt and large space after being diluted, and the spray is suitable for deodorizing living rooms.

This invention discloses a polyolefin adhesive for liquid cooling plates, a heat-bonding film, and a method for preparing the same. The polyolefin adhesive for liquid cooling plates comprises the following raw materials in parts by weight: 40-80 parts of a base resin; 5-40 parts of a tackifying resin; 1-35 parts of a flame retardant; 1-5 parts of a crosslinking agent; and 0.1-0.5 parts of an antioxidant. The base resin is maleic anhydride polyolefin resin, and the crosslinking agent includes aziridine crosslinking agent, or may also include at least one of polycarbodiimide, bisphenol A type epoxy resin, and bisphenol A type phenolic epoxy resin. This invention achieves a reduction in the curing temperature of the adhesive film and improves its performance.

The invention relates to a novel machine head for flat cable production, and belongs to the technical field of cable production, the novel machine head comprises a machine head inner mold, a machine head outer mold, a fixing mechanism shell, a splitter plate, a positioning plate, a pressing mold plate, a control system temperature sensor, a heating device, a hexagon socket cap screw and a connecting bolt, and the fixing mechanism shell is provided with a flat wire passing port and a feeding port. According to the flat electric wire machine head structure, the forming process of a medium is controlled through a special mold structure, the section shape and size of an electric wire can be accurately controlled, the production efficiency and the product quality are improved, the mechanical performance, the chemical performance, the electrical performance and the thermal performance of the electric wire machined through the machine head structure are all improved, and the product quality is improved. And only the inner die and the outer die need to be replaced when the machining line type is replaced, good applicability is achieved, the machine head is provided with a temperature control system, accurate control over the temperature of the machine shell and the dies can be achieved, and the machine head is simple in overall structure, compact in structure, small in occupied area and easy to maintain and overhaul.

The invention discloses a high-resilience squid gill imitating artificial muscle and a preparation method thereof, and belongs to the technical field of artificial muscles, the high-resilience squid gill imitating artificial muscle comprises a multi-gap electric braking membrane and an electrode membrane which are distributed at intervals, the multi-gap electric braking membrane and the electrode membrane are bonded through hydrogel to form artificial muscle slice layers, and the artificial muscle slice layers are spliced and assembled through conductive adhesive to form a squid gill top end structure. The multi-gap electric brake membrane is prepared by cross-linking a sodium metaaluminate solution and a polyacrylamide solution and then performing a roller scraper drying method. The electrode film is prepared from composite gel and carbon quantum dots; the preparation method of the hydrogel comprises the following steps: adding distilled water into a dry beaker, adding polyacrylamide, and stirring in a magnetic stirrer to obtain the hydrogel. The preparation method is relatively good in flexibility, excellent in tensile property and low in cost, and plays a more important role in the field of artificial muscles.

The invention provides a fabricated carbon sequestration ecological fish reef based on CO2 mineralized recycled aggregate and a preparation method of the fabricated carbon sequestration ecological fish reef, and belongs to the technical field of carbon sequestration technologies and the field of marine ecological restoration. The fabricated carbon sequestration ecological fish reef based on the CO2 mineralized recycled aggregate is prepared from the following raw materials in parts by mass: 20 to 30 parts of CO2 mineralized recycled aggregate, 15 to 20 parts of sea sand, 10 to 15 parts of cement, 1 to 2 parts of mineral admixture, 2 to 4 parts of shell powder, 0.15 to 0.6 part of additive and 3 to 6 parts of water, the CO2 mineralized recycled aggregate is prepared from the following raw materials in parts by mass: 15 to 20 parts of CO2 mineralized recycled coarse aggregate and 5 to 10 parts of CO2 mineralized recycled fine aggregate. The fabricated carbon sequestration ecological fish reef based on the CO2 mineralized recycled aggregate is integrally formed through a formwork pouring process, and has the advantages of modular assembly, good stability, convenience in construction and the like. According to the method, marine ecological restoration and biological inhabitation are facilitated, carbon sequestration and emission reduction can be achieved through the CO2 mineralization technology, and high ecological and environmental protection values are achieved.

The present invention relates to the field of cable technology, and specifically to an astronaut extravehicular cable, comprising an outer sheath and a mica wrapping tape layer and an electromagnetic shielding layer arranged on the inner side of the outer sheath, wherein the electromagnetic shielding layer covers and fixes a plurality of cable cores, and the cable cores are composed of a conductor and an inner sheath; the electromagnetic shielding layer comprises a matrix resin, graphene oxide / carbon nanocomposite fibers and 3D‑MXene@M, wherein M is a transition metal element. The electromagnetic shielding layer in the present invention has good mechanical properties and excellent electromagnetic shielding effectiveness. The astronaut extravehicular cable prepared by the electromagnetic shielding layer can effectively resist electromagnetic radiation from outer space, maintain stable transmission of signals in the cable, and has broad application prospects in outer space exploration.

The invention belongs to the technical field of back contact batteries, and particularly relates to a stimuli-responsive pre-grafted solid polymer electrolyte and an all-solid-state battery comprising the stimuli-responsive pre-grafted solid polymer electrolyte. The graft polymer is prepared by mixing and processing with polyethylene oxide and electrolyte salt, and after mixing and processing, the graft polymer is at least partially grafted with polyethylene oxide; the mass of the corresponding graftable polymer is 5%-20% of the mass of polyethylene oxide, the stimuli-responsive pre-grafted solid polymer electrolyte is rich in I <-> and I3 <-> ions, and the total amount of the I <-> and I3 <-> ions is 2%-10% of the mass of the corresponding graftable polymer. The lithium ion battery has excellent high voltage, high performance and stability, and particularly has relatively high electrochemical stability and high ionic conductivity.

The application provides a pole piece, a preparation method of the pole piece, a battery, a battery pack and a power utilization device. The pole piece comprises an active layer, and the active layer comprises a dispersant with a structure shown in the following formula I: Formula I in the formula I, m is an integer selected from 50-10000, n is an integer selected from 100-10000, and the m and the n satisfy 0.5<=n / m<=3.5. The pole piece not only has the advantage of high peeling strength, but also has the advantage of uniform dispersing of the conductive agent, and therefore is beneficial to the improvement of the electrochemical performance of the battery.