225results about How to "Facilitate dissociation" patented technology

The invention discloses a carbon dioxide hydrogenation methanation-cracking carbon preparation series method, which comprises the following steps: generating CH4 through a reaction of # imgabs0 # imgabs1 #, and realizing the production of a carbon material by adopting the technologies of condensation separation of CH4 and water vapor, CH4 cracking reaction of # imgabs2 #, cyclic utilization of hydrogen and the like. The process is composed of a carbon dioxide hydrogenation methanation reactor and a methane cracking reactor. In the methanation reactor, CO2 and H2 react under a low-temperature condition to generate CH4 and water vapor; cH4 and water vapor are separated by adopting a compressor condensation separation technology, and the separated CH4 is conveyed to a cracking reactor. In the methane cracking reactor, CH4 is cracked at a high temperature to generate H2 and a carbon nanomaterial, and then H2 is returned to the methanation reactor again. The separation of CH4 and water vapor at a relatively low temperature is realized in the tandem carbonization process through a low-temperature condensation technology; through low-temperature CO2 methanation and CH4 catalytic cracking, the content of CO2 is reduced, a high-quality carbon nanomaterial is obtained, and cyclic utilization of CO2 and H2 is realized.

The invention discloses a polyurethane-based solid electrolyte as well as a preparation method and application thereof. The polyurethane-based solid electrolyte comprises a metal organic framework three-dimensional skeleton film and a composite polyurethane layer attached to the surface of the metal organic framework three-dimensional skeleton film, the metal organic framework three-dimensional framework film is metal organic framework modified glass fiber cloth; the composite polyurethane layer comprises polyurethane and metal organic framework particles embedded in a macromolecular network of the polyurethane in situ; a carbamate group of polyurethane and a three-dimensional skeleton of the metal organic framework form a hydrogen-bond interaction, so that the ion transmission performance and the mechanical performance are synergistically improved. The polyurethane-based solid electrolyte provided by the invention can promote lithium salt dissociation, inhibit anion migration, improve the ionic conductivity and the ionic transference number, and improve the charge-discharge stability; a large number of repetitive unit carbamate groups in polyurethane and a three-dimensional skeleton form hydrogen-bond interaction to synergistically promote rapid transmission of lithium ions, so that the transference number of the polymer electrolyte is increased, and the ion transmission performance and the mechanical performance are improved.

The invention relates to a lithium ion battery electrolyte additive, namely 2-(dimethyl phosphate)-18-crown-6-ether, and a corresponding high-energy-density lithium ion battery electrolyte. The electrolyte comprises the following components: lithium salt, an anhydrous organic solvent and an electrolyte additive; wherein the electrolyte additive comprises 2-(dimethyl phosphate ester group)-18-crown-6-ether, and the electrolyte additive comprises 2-(dimethyl phosphate ester group)-18-crown-6-ether; the use amount of the 2-(dimethyl phosphate)-18-crown-6-ether in the electrolyte is 0.1%-10% of the total mass of the electrolyte. According to the 2-(dimethyl phosphate)-18-crown-6-ether prepared by the invention, a phosphate functional group is introduced on the basis of crown ether; the electrolyte not only improves conductivity to meet charge and discharge requirements, reduces viscosity, reduces ion migration resistance (especially at low temperature), enhances chemical stability and improves thermal stability, but also improves compatibility of a positive electrode and a negative electrode, reduces problems of interface reaction, SEI membrane rupture and the like, and ensures performance and safety of the battery, thereby promoting technical development of the lithium ion battery.

The invention belongs to the technical field of recycling of positive electrode materials of waste lithium ion batteries, and particularly discloses a method for quickly upgrading and regenerating lithium iron manganese phosphate by utilizing waste lithium iron phosphate powder. According to the method, the inherent characteristics of a leaching agent and an oxidizing agent are utilized, mechanical activation is combined with high-temperature sintering, and the waste lithium iron phosphate positive electrode active material is quickly regenerated into the lithium iron manganese phosphate material. Solid-liquid separation and impurity removal are not needed in the whole process, the obtained precursor can be directly used for preparing lithium manganese iron phosphate, compared with existing recycling, economic benefits can be improved to the maximum extent, influences on the environment can be reduced, and the additional value of recycled products is effectively improved.

The invention belongs to the technical field of electrolyzed water catalysts, and discloses a bifunctional heterojunction catalyst, a preparation method and application of the bifunctional heterojunction catalyst in electrolyzed water, the catalyst is characterized in that NiMoO4 nanosheets which grow on a foamed nickel conductive substrate in situ and have a clear heterogeneous interface structure coat Co3O4 nanowires to form a Co3O4 nanowire-coated NiMoO4 nanosheet array which is recorded as NiMoO4-coated Co3O4 / NF catalyst, and the NiMoO4-coated Co3O4 / NF catalyst is used for preparing the catalyst. The overall appearance of the catalyst is in the shape of a porous and wrinkled paper embroidered ball, and the heterogeneous interface structure of the catalyst enables the catalyst to have excellent OER / HER bifunctional catalytic activity under the alkaline condition. Through cooperation of a heterogeneous interface and a three-dimensional porous structure, the efficient hydrogen evolution and oxygen evolution activity is achieved in the water electrolysis process; the assembled full-battery electrolyzed water system can be subjected to overall water decomposition under low voltage, the performance is almost not attenuated under long-time operation, conversion and utilization of resources and energy are achieved, and the application prospect is wide.

The invention discloses a rare earth element doped hydrogen evolution electrocatalyst and a preparation method and application thereof. The rare earth element doped hydrogen evolution electrocatalyst comprises rare earth element doped nickel oxide serving as a carrier and ruthenium atoms anchored on the carrier. According to the rare earth element-doped hydrogen evolution electrocatalyst provided by the invention, the adsorption of hydroxyl is enhanced by doping the oxyphilic rare earth element with NiO, the hydrogen conversion on the surface of Ru is promoted by a rare earth element / NiO carrier, and the rare earth element / NiO and Ru generate a definite synergistic effect to jointly promote the dissociation of water, so that the rare earth element-doped hydrogen evolution electrocatalyst shows very high catalytic activity in alkaline HER; a new thought is provided for accelerating alkaline HER reaction kinetics. In an alkaline HER test, the rare earth element doped hydrogen evolution electrocatalyst provided by the invention can reach the current density of 10mA cm <-2 > by only needing the overpotential of 38mV; and after a stability test is carried out for 50 hours, the overpotential is not attenuated.

The invention discloses a human-derived iPSC (induced pluripotent stem cell)-induced liver organ and a preparation method thereof. The method comprises the following steps: digesting human induced pluripotent stem cells obtained by culture into single cells; single cells are prepared into cell clusters through self-balling, or cell matrigel microspheres are prepared by using a T-type microfluidic technology and then are distributed one by one, so that one cell cluster is formed in each pore of the low-adsorption 96-pore plate; carrying out step-by-step induction culture on the obtained cell cluster, and culturing in a culture medium I for 5 hours; replacing with a culture medium II and culturing for 2 days; a culture medium III is used for culturing for 2 days; replacing with a culture medium IV and culturing for 5 days; replacing with a culture medium V, and culturing for 6 days; and replacing with a culture medium VI, and culturing for 10 days to obtain the mature human liver organ. According to the invention, liver organs with human normal liver cell characteristics and protein expression can be formed within 25 days, and the method can realize homogenization and high efficiency of iPSC induction.

The invention discloses a preparation method and application of an efficient migration-resistant hindered phenol antioxidant. The preparation method comprises the following steps: dissolving a hindered phenolic compound and an epoxy compound in a solvent to carry out ring-opening reaction, and then further reacting the carboxyl-activated hindered phenolic compound with a ring-opened product to obtain the novel antioxidant with 4-6 hindered phenolic hydroxyl groups in the structure. According to the novel antioxidant disclosed by the invention, on the basis of fully utilizing the capability of capturing free radicals by hindered phenolic hydroxyl, the oxidation resistance of the antioxidant is improved by changing a para-substituent structure, the migration resistance of the antioxidant is improved by changing the molecular weight and the molecular structure, and the service life of the antioxidant in a high polymer material is prolonged. The novel antioxidant has the advantages of simple process preparation, high efficiency, migration resistance and the like.

The invention provides a nano-porous Co3Ti / Co composite electrode as well as a preparation method and application thereof. The preparation method comprises the following steps: cleaning high-purity Co and Ti metal sheets, corroding oxides on the surfaces of Al metal sheets, then placing the Co, Ti and Al metal sheets in an electric arc furnace for melting to obtain alloy ingots, then preparing small alloy ingots through a directional solidification technology, and carrying out corrosion treatment on the alloy ingots to finally obtain the nano-porous Co3Ti / Co composite electrode. According to the electrode, a Co3Ti / Co intermetallic compound is seamlessly integrated on a Co ligament with a dual-mode pore structure (large pores are about 200nm, and small pores are about 3nm), so that the specific surface area of an electrode material is effectively increased, and the mass transfer and electron transport capabilities of an electrolyte are improved. Meanwhile, Co and Ti sites in the intermetallic compound are beneficial to adsorption of H and OH intermediates respectively, so that water dissociation and * H adsorption / desorption processes are promoted, alkaline hydrogen evolution reaction kinetics is remarkably enhanced, and an efficient electrode material is provided for hydrogen production application.

The invention belongs to the technical field of olefin hydroesterification reaction and catalysts thereof, and particularly relates to a B-L double-acid ionic liquid and a preparation method thereof, and a method for preparing carboxylic ester by adopting the B-L double-acid ionic liquid as an auxiliary agent and a solvent at the same time. The preparation method of the B-L double-acid type ionic liquid comprises the following steps: mixing a zwitterionic precursor A and a zwitterionic precursor B, and after the reaction is completed, carrying out suction filtration, washing and drying to obtain zwitterionic solid powder; dissolving the zwitterionic solid powder in methanol, dropwise adding acid, and reacting to obtain a B acid type ionic liquid; dropwise adding L acid into the B acid type ionic liquid, stirring for reaction, washing and drying to obtain the B-L double-acid type ionic liquid. The B-L double-acid type ionic liquid provided by the invention is also used as an auxiliary agent and a solvent in the preparation of organic carboxylic ester, the dosage is small, the corrosion to equipment is small, the product is easy to separate, and the B-L double-acid type ionic liquid can be reused and has good catalytic activity.

The invention discloses a method for determining antibiotics in environmental soil, which comprises the following steps: S1, collecting fresh soil, crushing, sieving with a 0.1 mm-0. 2mm sieve, weighing 3 g-5 g of sample, and placing in a centrifuge tube; s2, adding 50-80 mL of a methanol-acetic acid-aqueous solution into the centrifuge tube, oscillating for 3-5 min, then carrying out normal-temperature ultrasonic treatment for 25-30 min, carrying out high-speed centrifugation for 10-15 min at a low temperature of 4-6 DEG C, taking a supernatant, repeatedly extracting residues twice, merging the obtained extract and the supernatant, and concentrating to 10-15 mL to obtain a concentrated solution A; s3, adding 20-25 mL of dichloromethane into the concentrated solution, repeating the extraction operation in the S2 to obtain a concentrated solution B, and adding ultrapure water into the concentrated solution B to dilute the concentrated solution B to 200 mL; and S4, adding 1-1.5 g of disodium ethylene diamine tetraacetate into the diluent obtained in S3, adjusting the pH value to 3.5, enabling the diluent to pass through a small solid-phase extraction column, eluting the small solid-phase extraction column with methanol, blow-drying under nitrogen flow, fixing the volume, passing through a filter membrane, and transferring into a sample bottle for UPLC-MS / MS determination. According to the method, the antibiotic extraction rate and the content determination accuracy are improved.

The invention relates to a lithium ion battery electrolyte additive 2, 4-dicarboxamido sulfonyl cyclobutanone and a corresponding high-temperature lithium ion battery electrolyte. The electrolyte comprises the following components: lithium salt, an anhydrous organic solvent and an electrolyte additive; wherein the electrolyte additive comprises 2, 4-dicarboxamido sulfonyl cyclobutanone, and the electrolyte additive comprises 2, 4-dicarboxamide sulfonyl cyclobutanone; the use amount of the 2, 4-dicarboxamido sulfonyl cyclobutanone in the electrolyte is 0.1%-10% of the total mass of the electrolyte. The high-temperature lithium ion battery electrolyte added with 2, 4-dicarboxamidosulfonyl cyclobutanone can improve the high-temperature discharge performance, the high-temperature charge performance, the high-temperature cycle performance and the safety performance of a lithium ion battery when the lithium ion battery works at 4.2 V, does not influence the first efficiency and the rate capability, and has a relatively good application prospect in a high-temperature system.

The invention discloses an MOF-based solid electrolyte composite membrane as well as a preparation method and application thereof, and an efficient and stable flexible composite solid electrolyte membrane based on MOF is constructed through the synergistic effect of PVDF-HFP, UIO-66 and ionic liquid ([EMIM] [TFSI]). The prepared optimal composite solid electrolyte membrane shows high ionic conductivity, high Li < + > transference number, moderate electrochemical window, excellent mechanical stability and good interface stability at room temperature. The Li / / Li symmetric battery equipped with the PHM21-IL solid electrolyte shows a stable lithium deposition / stripping behavior within a time period of more than 1000 hours. Meanwhile, the assembled solid-state LiFePO4 / / Li battery shows excellent rate capability and long cycle stability at room temperature, and can operate safely and stably even in a soft package battery.

The invention discloses a fluorine-containing polyimide-based composite solid electrolyte, a preparation method thereof and a lithium battery. The preparation method comprises the following steps: preparing fluorine-containing polyimide by adopting a chemical imidization method, enabling the interior of the fluorine-containing polyimide to generate crosslinking by adding a cross-linking agent, then dissolving SN and LITFSI in N, N-dimethylformamide, adding into an imidized cross-linked fluorine-containing polyimide solution, and then preparing into a film. And carrying out suction filtration on the obtained membrane in a sand core funnel by using a nano filter membrane to form a porous membrane, soaking the porous membrane in absolute ethyl alcohol, removing the solvent, and carrying out thermal crosslinking to obtain the fluorine-containing polyimide-based composite solid electrolyte. According to the preparation method disclosed by the invention, the FPI and the SN can be mixed to prepare the uniform electrolyte membrane, so that the rate capability of the lithium ion battery is remarkably improved, and meanwhile, the mechanical property of the electrolyte membrane is enhanced.

The invention discloses a heat storage unit and an assembling method and application thereof. The heat storage unit comprises a metal heat storage shell and a phase change layer, a heat storage space in the metal heat storage shell is filled with the phase change layer, and a phase change material of the phase change layer comprises the following components: 85.0 wt.%-95.0 wt.% of a phase change base material, 1.0 wt.%-3.0 wt.% of a nucleating agent, 2.0 wt.%-4.0 wt.% of a thickening agent and 0.5 wt.%-2.0 wt.% of a corrosion inhibitor; the phase-change base material comprises one of saturated fatty acid, an alcohol compound or an inorganic phase-change base material; the corrosion inhibitor comprises at least one of a nitrogen-containing heterocyclic compound, an oxygen-containing heterocyclic compound, molybdate, chromate and tungstate. A phase change base material and a corrosion inhibitor are selected for combined use, the corrosion inhibitor dissociates and forms substances with negative charges such as BTA <->, MnO4 < 2-> and CrO4 < 2->, a metal shell is in contact with the phase change material to lose electrons to form metal ions with positive charges, and the metal ions are combined with the substances with negative charges such as BTA <->, MnO4 < 2-> and CrO4 < 2-> to generate a compact long-chain complex. Further contact between other corrosion ions and metal is inhibited, so that the purpose of corrosion prevention is achieved.

The invention provides a PVDF-PMMA (Polyvinylidene Fluoride-Polymethyl Methacrylate)-based polymer electrolyte membrane as well as a preparation method and application thereof, and belongs to the field of lithium batteries. The invention provides a PVDF-PMMA (Polyvinylidene Fluoride-Polymethyl Methacrylate)-based polymer electrolyte membrane. The PVDF-PMMA-based polymer electrolyte membrane is prepared from the following components: PVDF, PMMA, a lithium salt, an active filler and a phosphine compound, the mass ratio of the PVDF to the lithium salt is (2-15): 1; the mass ratio of the PVDF to the PMMA is (1-10): 1; the ratio of the total mass of the PVDF and the lithium salt to the mass of the active filler is (2-30): 1; the ratio of the total mass of the PVDF and the lithium salt to the mass of the phosphine compound is (5-30): 1. The polarity of the phosphine compound is high, and the phosphine compound can promote dissociation of lithium salt, so that rapid and efficient transmission of lithium ions in the PVDF-PMMA-based polymer electrolyte membrane at room temperature is promoted, and the conductivity of the PVDF-PMMA-based polymer electrolyte membrane is further improved.

The invention provides a solid electrolyte membrane, a negative-electrode-free alkali metal battery interface layer and a preparation method thereof. The invention provides application of carboxymethyl cellulose salt, a polymer molecular chain and heteropolyacid salt in solid electrolyte and an alkali metal / cathode-free alkali metal battery interface layer. Through the cross-linking effect of intermolecular hydrogen bonds, the solid electrolyte membrane and an interface have a rigid and flexible polymer-metal oxygen cluster-polymer cross-linked structure, so that the stress caused by volume change is effectively relieved. The ultrathin interface attached to the surface of the current collector can promote uniform deposition of alkali metal ions on the surface of the current collector, and a compact SEI layer is formed in the cycle process of the battery, so that the cycle life of the negative-electrode-free alkali metal battery is effectively prolonged. The cathode-free alkali metal electrode containing the interface layer can effectively improve the coulombic efficiency and prolong the cycle life, and a feasible thought is provided for the interface design of a cathode-free alkali metal battery.

The invention belongs to the technical field of metal powder material preparation, and particularly relates to a preparation method of modified aluminum lithium alloy powder and the powder. The preparation method comprises the following steps: dispersing aluminum-lithium alloy powder in an organic solvent to obtain a first alloy powder dispersion liquid; introducing dry inert gas into the first alloy powder dispersion liquid, adding hydrofluoric acid, and reacting to obtain second alloy powder dispersion liquid; a coating agent is dissolved in an organic solvent, a coating agent solution is obtained, and the coating agent comprises cellulose acetate and a wax substance; and adding a coating agent solution into the second alloy powder dispersion liquid, stirring at a preset temperature to volatilize the organic solvent and coat the alloy powder with the coating agent, and then carrying out vacuum drying to obtain the modified aluminum-lithium alloy powder. The modified aluminum-lithium alloy powder is good in stability, high in combustion efficiency and capable of actually releasing much heat.

The invention discloses infant formula milk powder with high-activity immune protein and a preparation method of the infant formula milk powder, and belongs to the technical field of preparation of dairy products. The preparation method comprises the following steps: degreasing and degerming fresh milk, transferring lactoferrin phase combination, enriching lactoferrin to a whey phase through filtration of a microfiltration membrane, further desalting and concentrating the whey phase through ultrafiltration and electrodialysis, and forming active whey rich in lactoferrin after sterile concentration; the trapped fluid filtered by the microfiltration membrane is subjected to milk killing (primary sterilization), then is blended with other nutrients, is homogenized, is subjected to material killing (secondary sterilization) and is concentrated, and finally, the treated trapped fluid and the active whey which is subjected to sterile concentration and is rich in lactoferrin are mixed on line and then are subjected to evaporation concentration and spray drying; the infant formula milk powder rich in active whey protein with high lactoferrin content is obtained.

The invention belongs to the technical field of hydrolysis hydrogen production, and particularly relates to a preparation method of a CoPx-CeO2 loaded platinum catalyst with a core-shell structure and application of the CoPx-CeO2 loaded platinum catalyst in seawater electrolysis hydrogen production. A Co (CO3) 0.5 (OH) nanorod precursor is prepared on foamed nickel through a hydrothermal method and then calcined to obtain CoPx, a CeO2 film is electrically deposited to obtain a CoPx-CeO2 composite carrier, and platinum is impregnated and loaded to obtain the CoPx-CeO2-Pt catalyst. The catalyst shows excellent hydrogen evolution catalytic activity in seawater, and the CoPx-CeO2 composite carrier prevents Pt nano-particles from being agglomerated through interaction of metal carriers, so that the atom utilization rate of Pt is increased. Meanwhile, the CeO2 film actively enriches OH <-> in an alkaline electrolyte to construct a local high-alkalinity microenvironment on the surface of the catalyst, Cl <-> in seawater is prevented from getting close to an active site corroding the catalyst through electrostatic repulsion, and the stability and durability of the catalyst are improved.

The invention relates to the technical field, in particular to an asymmetric donor material containing tin atoms and a preparation method and application of the asymmetric donor material, the structural formula of the asymmetric donor material is shown in the formula 1, and in the structural formula # imgabs0,-X is a fluorine atom or a chlorine atom; the tin atom-containing small molecule donor material designed by the invention can form a proper energy level difference with an acceptor material L8-BO, which is beneficial to exciton dissociation, and has better photovoltaic performance in the test of organic solar cells, and the small molecule has a clear molecular structure in the full-small molecule organic solar cells, so that the application range of the small molecule donor material is widened, and the application range of the small molecule donor material is widened. And the difference between the material and the device batch is very small, so that the method has unique advantages in the commercialization aspect. The method is of great significance for constructing a high-efficiency organic solar cell system.

The invention provides a preparation method of a metal-doped cobalt-based dynamic catalyst and application of the metal-doped cobalt-based dynamic catalyst in electrosynthesis of ammonia, and belongs to the technical field of catalysts. The metal-doped cobalt-based catalyst is prepared by adopting an ion exchange and reducing atmosphere calcination method, has a self-supporting characteristic and high activity, and is directly used as an electrode in the process of electrosynthesis of ammonia, so that the reaction stability is greatly improved. Compared with the existing electrosynthesis ammonia catalyst, the metal-doped cobalt-based dynamic catalyst prepared by the invention has unique advantages in the aspects of interface water activation and nitrogen oxide conversion, and shows excellent application prospects.

The invention discloses a method for extracting iron and reducing titanium from vanadium-titanium-iron concentrate, and belongs to the technical field of mineral separation. The invention provides a method for extracting iron and reducing titanium from vanadium-titanium-iron ore concentrate in order to realize the removal of Ti in titanomagnetite with the same internal mass appearance, which comprises the following steps: grinding, filtering, drying and scattering the vanadium-titanium-iron ore concentrate, uniformly mixing with a calcium source, roasting, grinding the roasted material, and carrying out low-intensity magnetic separation and reverse flotation to obtain the iron ore concentrate. According to the method, the vanadium-titanium-iron concentrate and CaCO3 or CaO are roasted, Ti in titanomagnetite is transferred into perovskite or iron titanate and the like from the titanomagnetite, then through ore grinding and low-intensity magnetic separation, all components in roasted materials are fully dissociated, the reverse flotation process is optimized, the grade of TFe in the iron concentrate is improved, and the grade of TiO2 in the iron concentrate is reduced.

The invention relates to the technical field of electrolyte, in particular to a thioether cross-linked solid polymer electrolyte membrane as well as a preparation method and application thereof. The preparation method comprises the following steps: taking N, N-dimethylformamide, respectively adding 3, 6-dioxa-1, 8-octane dithiol and triglycidyl isocyanurate, and uniformly stirring to obtain a mixed solution; adding bis (trifluoromethylsulfonyl) imide lithium into the mixed solution, putting magnetons on a magnetic stirrer, and completely dissolving the magnetons to obtain a precursor solution; and pouring a proper amount of the precursor solution into a polytetrafluoroethylene mold, spreading, and carrying out cross-linking polymerization in a blast oven to form the film. The three-dimensional thioether cross-linked network structure has a large number of weakly coordinated thioether groups, dissociation of lithium salt can be promoted, a large number of free Li < + > is generated, the number of Li < + > is increased, meanwhile, the crystallinity of a polymer is remarkably reduced, the ionic conductivity is improved, the mechanical stability of a film can be improved, and the service life of a battery is effectively prolonged.

The embodiment of the invention provides a non-fused ring electron acceptor containing an asymmetric side chain and a preparation method and application thereof, the non-fused ring electron acceptor containing the asymmetric side chain has the following structure: # imgabs0 #, R1, R2 and R3 comprise any one of branched chain type, straight chain type or cyclic alkyl containing 1-20 carbon atoms, and A is a strong electron withdrawing functional group. According to the non-fused ring electron acceptor containing the asymmetric side chain and the preparation method and application thereof provided by the embodiment of the invention, the aryl alkylamine asymmetric structure is introduced as the side chain, so that the molecular planarity of the non-fused ring electron acceptor can be maintained, and the molecular accumulation and solubility can be conveniently regulated and controlled. Therefore, the non-fused ring electron acceptor has the advantages of good solubility, strong crystallization, high mobility, good compatibility and easiness in processing into a film; when the electron acceptor material is used for preparing an organic solar cell, the photoelectric conversion efficiency of the device can reach 16%.

The invention relates to a composite solid electrolyte, a preparation method and a sodium ion battery, and belongs to the field of sodium batteries. The composite solid electrolyte comprises the following components in parts by mass: 70-90 parts of a polymer matrix, 1-15 parts of sodium salt and 1-15 parts of silicon dioxide nanoparticles. In the composite solid electrolyte disclosed by the invention, the silicon dioxide nanoparticles can adsorb PF6 <->, so that the dissociation of NaPF6 and the release amount of free sodium ions are promoted, and the improvement of ionic conductivity is facilitated.

The invention discloses a preparation method of a composite ion conductor, and belongs to the field of lithium battery solid electrolyte materials. The composite ion conductor is obtained by loading ionic liquid through MOFs pore channels. The preparation method comprises the following steps: S1, preparing an Al-based MOFs material MIL-101; s2, the MIL-101 is modified, and NH2 (at) MIL-101 is prepared; s3, preparing a lithium ion liquid Li-IL; and S4, preparing a composite ion conductor NH2 (at) MIL-101 / Li-IL. The prepared composite ion conductor is used as a solid electrolyte, carbon-coated lithium iron phosphate is used as a positive electrode, a lithium battery is assembled by matching, the electrochemical performance of the lithium battery is tested, and the test finds that the solid electrolyte shows excellent rate capability and cycle performance at room temperature and has wide application potential.

The invention discloses a MoS2 / Ni3S4 / CFP electrocatalyst with stable ampere-level current density and a preparation method and application thereof, and belongs to the technical field of electrocatalytic hydrogen evolution. According to the preparation method disclosed by the invention, a heterogeneous interface is constructed between MoS2 and Ni3S4 through a hydrothermal reaction, and MoS2 and Ni3S4 generate a heterojunction on a carbon paper substrate, so that the MoS2 / Ni3S4 / CFP electrocatalyst with stable ampere-level current density is obtained. The preparation method of the composite material comprises the following steps: (1) dissolving nickel salt, urea and ammonium fluoride into water, stirring, and putting the obtained mixed solution A and carbon paper into a hydrothermal reaction kettle for primary hydrothermal reaction to obtain a nickel hydroxide precursor; and (2) dissolving molybdenum salt and thiourea in water, stirring, putting the obtained mixed solution B and the nickel hydroxide precursor into a hydrothermal reaction kettle, and carrying out secondary hydrothermal reaction to obtain the catalyst. According to the catalyst, the electron transfer rate is increased, meanwhile, the number of active sites is increased, and excellent hydrogen evolution reaction activity and stability are shown in the water electrolysis process.

The invention discloses a preparation method and application of a carbon quantum dot nano-composite coating modified stainless steel bipolar plate. The method comprises the following steps: S1, adding carbon quantum dots into a choline chloride-lactic acid-based eutectic solvent containing niobium salt, and carrying out ultrasonic dispersion to obtain a uniform composite electroplating solution; s2, pretreating the stainless steel bipolar plate to obtain a stainless steel bipolar plate to be used; and S3, connecting the stainless steel bipolar plate to be used obtained in the step S2 with the negative electrode of a direct-current electroplating power supply to serve as a cathode, connecting an anode strip with the positive electrode of the direct-current electroplating power supply to serve as an anode, placing the cathode and the anode in the composite electroplating solution obtained in the step S1 in parallel, and performing electrochemical deposition by adopting a constant potential deposition method to obtain the lithium ion battery. The carbon quantum dot nano composite coating modified stainless steel bipolar plate is obtained. The process is simple, the cost is low, the coating is compact and uniform, the electrochemical stability and the conductivity are excellent, and industrial production and application of the bipolar plate for proton exchange membrane fuel cells and proton exchange membrane water electrolysis can be met.

The invention relates to the technical field of batteries, and provides a multifunctional additive, a solid electrolyte and a preparation method and application thereof, the additive comprises fluoroaniline and derivatives thereof, the structural general formula of the additive is # imgabs0 #, R1 comprises fluorine atoms, R2 is a single bond or alkyl, and x is an integer of 1-5. According to the invention, fluoroaniline and a homologue thereof are taken as the solid electrolyte additive, and the additive can generate relatively strong interaction with anion groups of various lithium salts due to the amino group, so that dissociation of the lithium salts is promoted, and the ionic conductivity of the solid electrolyte is improved to 10 <-4 > S / cm or above; meanwhile, the oxidation resistance of the solid electrolyte is also improved, and a practical research scheme is provided for developing a high-performance solid lithium ion battery.