2165 results about "Zinc salts" patented technology

The invention provides a method for enhancing interface bonding and corrosion resistance of a basalt fiber composite material, and belongs to the field of fiber surface modification chemical methods. The method is realized through the following steps: firstly, treating basalt fibers by utilizing an organic solvent through high-temperature reflux to prepare desized basalt fibers; then, the desized basalt fibers are immersed in a dopamine solution to be subjected to auto-polymerization, and basalt fibers with a polydopamine coating are prepared; sequentially immersing the basalt fiber coated with the polydopamine into a zinc salt solution and a 2-methylimidazole solution, so as to prepare a ZIF-8 modified basalt fiber; and finally, mixing the ZIF-8 modified basalt fiber with resin through electrostatic coating, and molding by adopting a segmented hot-pressing method to obtain the basalt fiber composite material. According to the method, a composite structure formed by the synergistic effect of a dopamine self-polymerization layer and ZIF-8 is introduced into the surface of the basalt fiber, so that the interface bonding force between the fiber and resin and the corrosion resistance of the composite material are greatly enhanced.

The invention relates to the technical field of adsorbents, and particularly discloses an aluminum oxide type adsorbent and a preparation method thereof.The preparation method comprises the following steps that lanthanum salt, cerium salt and a polyethylene glycol aqueous solution are mixed to be uniform, then the mixture is mixed with gamma-Al2O3 to be uniform, pH is adjusted, standing is conducted, solid-liquid separation is conducted, drying and roasting are conducted, and a double-doped carrier is obtained; dispersing the double-doped carrier in a mixed solution containing 2-methylimidazole, ferric salt and zinc salt, adjusting the pH value, carrying out heating reaction, solid-liquid separation and drying in an inert atmosphere, grinding to obtain powder, and carrying out molding treatment on the powder to obtain a composite carrier; uniformly mixing the Ag modified molecular sieve with silica sol, coating the surface of the composite carrier with the mixture, and drying to obtain an adsorbent precursor; dipping an adsorbent precursor in the dispersion liquid, and after dipping, solid-liquid separation and drying, reactivating to obtain the aluminum oxide type adsorbent; the prepared adsorbent can synergistically and efficiently remove multiple impurities and is excellent in corrosion resistance.

The invention discloses Zn-I2 battery electrolyte as well as a preparation method and application thereof. The Zn-I2 battery electrolyte comprises an additive, zinc salt and a composite solvent, the additive contains halogen groups and polar functional groups; the halogen group is selected from one or more than two of F, Cl and Br. Through halogen groups in the additive, the iodine negative ion intermediate is effectively stabilized, so that a Zn-I2 battery is subjected to multi-electron transfer, and the specific capacity of the photoelectric storage integrated battery is improved; the polar functional groups in the additive can homogenize the electric field distribution on the Zn surface, reduce the nucleation overpotential corrosion current and hydrogen evolution current of Zn, change the diffusion path of Zn < 2 + > on an anode interface and improve the cycle stability of the Zn-I2 battery, the Zn-I2 battery with high specific capacity and long cycle life can be obtained by matching the two functional groups, and the Zn-I2 battery is coupled with a solar battery, so that the service life of the Zn-I2 battery is prolonged. Therefore, the overall conversion efficiency and the service life of the photoelectric storage integrated battery are improved.

The invention relates to the technical field of lithium-sulfur batteries, and discloses a sulfonyl ZIF-8 metal organic framework material, a lithium-sulfur battery diaphragm and a preparation method of the lithium-sulfur battery diaphragm. The preparation method of the sulfonyl ZIF-8 metal organic framework material comprises the following steps: dissolving a metal precursor and a mixed ligand in an organic solvent, and carrying out a coordination reaction under the action of organic alkali; solid is collected, washed and dried, and the sulfonic group ZIF-8 metal organic framework material is obtained. The metal precursor is soluble zinc salt; the mixed ligand comprises 2-methylimidazole and an imidazole derivative containing a sulfonic acid group. The sulfo group ZIF-8 metal organic framework material is prepared through a ligand doping strategy and is used for functional modification of the lithium-sulfur battery diaphragm; the shuttle behavior of lithium polysulfide (LiPS) can be effectively inhibited through the electrostatic repulsion effect of sulfonic acid groups and the synergistic effect of high-polarity adsorption sites; and the migration of Li < + > and the conversion efficiency of LiPS are remarkably promoted by an efficient ion transmission network, so that the cycle performance of the lithium-sulfur battery is improved.

The invention discloses a composite electrode material for a zinc-bromine flow battery and a preparation method and application thereof, and the preparation method comprises the following steps: S1, uniformly stirring a copper salt, a zinc salt, a sodium salt and distilled water at room temperature, aging in air, and then filtering, washing and drying to obtain a zinc-copper composite salt; s2, adding a polymer into an organic solvent under a stirring condition, and stirring under a water bath condition to obtain a spinning solution; then adding zinc-copper composite salt, stirring and then carrying out ultrasonic dispersion to obtain a composite spinning solution; s3, preparing the composite spinning solution into a precursor nanofiber material by utilizing high-voltage electrostatic spinning; and S4, carrying out pre-oxidation and carbonization treatment on the precursor nanofiber material in an atmosphere furnace, and cleaning and drying the carbonized material to obtain the composite electrode material for the zinc-bromine flow battery. According to the invention, the problems of low surface activity of bromine electrode reaction on an electrode material, unstable electro-catalytic performance, bromine permeation and the like in the zinc-bromine flow battery can be solved.

The invention discloses a CDs / QDs (at) ZIF-8 probe, a preparation method of the CDs / QDs (at) ZIF-8 probe and application of the CDs / QDs (at) ZIF-8 probe to detection of tetracycline at three emission ratios, and belongs to the technical field of fluorescence sensing. The probe comprises ZIF-8 as well as a carbon dot and a cadmium telluride quantum dot which are encapsulated in the ZIF-8. The preparation method comprises the following steps: sequentially adding CDs and QDs into a 2-methylimidazole solution, uniformly mixing, dropwise adding a zinc salt solution, and reacting to obtain the CDs / QDs ZIF-8 probe. The probe can be used for performing three-emission-ratio fluorescent quantitative detection on tetracycline, and the detection limit is 14.2 nmol / L. The method is simple in synthesis steps and easy in condition control. The fluorescent color of the mixed solution of CDs / QDs ZIF-8 and tetracycline is changed from powder to green along with the increase of the concentration of tetracycline, the detection method is visual and rapid, the visualization effect is good, the detection gel can be prepared, the detection gel can be combined with a smartphone for use, and the method is simple, convenient to carry and convenient for field judgment.

The invention belongs to the technical field of pharmaceutical chemical processes, and particularly relates to a preparation method of a penem antibiotic intermediate 4-BMA, which comprises the following steps: adding Zn powder, chlorosilane, aliphatic tertiary amine, zinc salt and 4-AA in a formula (I) into THF (tetrahydrofuran), uniformly stirring, dropwise adding a THF solution of alpha-haloamide with an induction group in a formula (II) for reaction, filtering the reaction solution, removing the zinc powder, and drying to obtain the penem antibiotic intermediate 4-BMA. Extracting the filtrate to obtain a THF phase, washing with an aqueous solution of potassium oxalate, and recovering THF to obtain a formula (III); and carrying out oxidative hydrolysis, sulfur dioxide quenching, sulfur dioxide acid regulation crystallization and recrystallization on the formula (III) to obtain the intermediate 4-BMA. According to the preparation method disclosed by the invention, a zinc salt is used as a catalyst during preparation of the formula (III), potassium oxalate is used for removing residual Zn (II) in a THF phase, SO2 is used for quenching hydrogen peroxide and acid regulation and crystallization of 4-BMA, the oxygenolysis problem of 4-BMA is solved, and the preparation method has the characteristics of greenness, safety and high efficiency, is strong in product competitive advantage and is suitable for industrial production.

The invention relates to the technical field of acrylic resin, and discloses green, environment-friendly and high-temperature-resistant acrylic resin for printing ink and a preparation method of the acrylic resin. The acrylic resin for the green, environment-friendly and high-temperature-resistant ink is prepared from the following components in parts by weight: 100 parts of vinyl monomer, 3 to 8 parts of triazinyl styrene monomer, 0.7 to 0.8 part of initiator and 0.5 to 3 parts of zinc salt, a styrene hard monomer structure and a triazine ring are introduced into an acrylic resin molecular chain, so that the pencil hardness, the mechanical property and the high temperature resistance of a paint film are improved. The triazinyl styrene monomer contains an o-hydroxyl Schiff base triazine structure, and has a strong coordination chelation effect with zinc ions, so that the zinc ions can be adsorbed in an acrylic resin molecular chain and are not easy to wash and remove, and a paint film is endowed with excellent antibacterial performance. The obtained acrylic resin has good practical application in the aspect of high-temperature-resistant and antibacterial ink.

The invention provides a preparation method of a multi-element doped asphalt-based hard carbon material for a negative electrode of a sodium-ion battery, which comprises the following steps: (S1) mixing and crushing asphalt and zinc salt of organic acid, and pre-oxidizing in an oxygen-containing atmosphere to obtain pre-oxidized asphalt particles; (S2) uniformly mixing the pre-oxidized asphalt particles, N-containing aromatic polyaldehyde and 1-hydroxyethylidene-1, 1-diphosphonic acid, and carrying out heating reaction in an inert atmosphere to obtain modified asphalt particles; and (S3) carrying out high-temperature carbonization on the modified asphalt particles in an inert atmosphere to obtain the multi-element doped asphalt-based hard carbon material. Firstly, an asphalt precursor and organic acid zinc are mixed and then pre-oxidized, then a cross-linking agent containing N and a cross-linking agent containing P are added for cross-linking, the obtained hard carbon material has a short-range ordered structure, and the sodium storage capacity and the sodium ion transmission capacity are both improved. The hard carbon material obtained by the preparation method has high specific capacity and first coulombic efficiency, and the rate capability is also improved.

The invention discloses a high-concentration salt poly-zwitterionic gel electrolyte, a zinc ion battery and a preparation method. Belongs to the technical field of zinc ion batteries. The preparation method comprises the following steps: adding high-concentration zinc salt into a monomer mixed solution obtained by mixing an aqueous solution of an anionic monomer, an aqueous solution of a cationic monomer and an aqueous solution of an acrylamide monomer, and performing ultrasonic treatment to obtain a monomer-salt mixed solution; adding a free radical polymerization initiator, a cross-linking agent and a catalyst, and adjusting the pH value to 4.5-5.5 to obtain a pre-polymerization solution; and heating and polymerizing the pre-polymerized solution at 35-45 DEG C to obtain the high-concentration salt poly-zwitterionic gel electrolyte. The electrolyte provided by the invention can overcome the problem of liquid leakage, inhibit the growth of zinc dendrites and the occurrence of side reactions, solve the problem of reduction of ionic conductivity, and obtain a zinc ion battery with excellent conductivity and stability.

The invention belongs to the technical field of supercapacitor electrode materials, and discloses a NiCoMoMnM-LDH high-entropy material and preparation and application thereof.The preparation method comprises the steps that a nickel salt, a cobalt salt, a manganese salt, an M salt and an ethanol water solution form a solution A; forming a solution B from molybdate, 2, 5-dihydroxy terephthalic acid and an organic solvent; mixing the solution A and the solution B, and performing hydrothermal reaction to obtain a precursor; dispersing the precursor in a sodium hydroxide solution, stirring, carrying out solid-liquid separation, washing, and drying to obtain a NiCoMoMnM-LDH high-entropy material; m salt is any one of zinc salt, ferric salt and copper salt. The preparation method disclosed by the invention not only avoids phase separation and element aggregation in the forming process of the high-entropy material, but also is high in universality, and the high-entropy hydroxide can be efficiently synthesized on a large scale; and the prepared high-entropy material is high in specific capacitance and good in rate capability and cycling stability, and can be applied to a positive electrode material of a supercapacitor.

The invention discloses a high-entropy layered double hydroxide with a strong strain effect and a preparation method of the high-entropy layered double hydroxide. The preparation method comprises the following steps: firstly, preparing ferric salt, cobalt salt, nickel salt, copper salt and zinc salt into a mixed aqueous solution of five metal salts; preparing sodium hydroxide and sodium carbonate into an alkali source aqueous solution; then mixing and stirring the mixed aqueous solution of the five metal salts and the alkali source aqueous solution to gradually form yellowish-brown precipitates, then transferring the yellowish-brown precipitates into a polytetrafluoroethylene reaction kettle, and further reacting in a drying oven; and finally, carrying out centrifugal separation, deionized water and absolute ethyl alcohol washing and freeze drying on the fully reacted precipitate to obtain brown powdery solid, namely the high-entropy layered double hydroxide. The high-entropy layered double hydroxide can be used for advanced oxidation catalytic degradation of tetracycline antibiotic wastewater, the strong strain effect of the high-entropy layered double hydroxide enhances the benefit of activating peroxymonosulfate to generate active free radicals, the efficiency of degrading water pollutants is improved, and the high-entropy layered double hydroxide has good application prospects.

The invention relates to an aqueous alkaline zinc-iodine battery and a preparation method thereof, and belongs to the technical field of aqueous zinc-iodine batteries. The battery includes: a positive electrode; a negative electrode; and an aqueous alkaline electrolyte; wherein the positive electrode comprises a current collector, a positive electrode active material, a conductive agent and an adhesive, and the positive electrode active material is iodide; the aqueous alkaline electrolyte comprises a chlorine-containing additive, a zinc salt electrolyte, an alkaline inorganic salt and water. The aqueous alkaline zinc-iodine battery provided by the invention is low in cost and simple to manufacture. According to the aqueous alkaline zinc-iodine battery provided by the invention, the iodide is adopted as the positive electrode active material, so that instability and potential safety hazards caused by taking an iodine elementary substance as the positive electrode at present are avoided. The battery disclosed by the invention releases a high-potential discharge platform at 1.65-1.68 V, the discharge capacity reaches 372-385 mAh.g <-1 >, and the battery shows rapid oxidation-reduction kinetics and excellent long-acting cycle stability.

The invention relates to an electrolyte for an aqueous zinc ion battery and the zinc ion battery. The electrolyte consists of soluble zinc salt, an electrolyte additive and solvent water, and the electrolyte additive is a thiazole derivative containing functional groups such as sulfydryl, amino, sulfonic acid group and formic acid group. According to the electrolyte provided by the invention, the electrolyte additive can regulate and control the coordination environment through coordination with zinc ions so as to realize uniform deposition of zinc, meanwhile, the electrolyte additive can also be grafted to the surface of zinc through functional groups such as sulfydryl, amino, sulfonic acid group and formic acid group so as to form a layer of stable protective film, and the protective film has good zinc affinity; direct contact between an electrolyte and the zinc negative electrode can be effectively blocked, chemical corrosion and hydrogen evolution reaction of the zinc negative electrode can be reduced, interface ion transmission can be regulated and controlled, zinc dendrite growth is effectively inhibited, the cycling stability of the zinc negative electrode is improved, the cycle life of the battery is prolonged, the rate performance of the battery is improved, and the method is easy and convenient to prepare, low in cost, high in safety and suitable for industrial production. The large-scale production is easy to realize.

The invention relates to an aqueous zinc-iodine battery electrolyte containing a phenolic additive, and a preparation method and application thereof, and belongs to the technical field of aqueous zinc-iodine batteries. The invention aims to solve the technical problems of serious multi-iodide shuttling and negative electrode by-products of the existing aqueous zinc-iodine battery. The preparation method of the aqueous zinc-iodine battery electrolyte containing the phenolic additive comprises the following steps: dissolving zinc salt and the phenolic additive in deionized water, and fully stirring and mixing to obtain the aqueous zinc-iodine battery electrolyte containing the phenolic additive. The phenolic additive used in the application can accelerate conversion from I3-to I-, accelerate iodine conversion reaction kinetics and reduce generation of polyiodide, so that shuttling of the polyiodide is effectively inhibited, a phenolic additive monomer is adsorbed on the surface of a zinc negative electrode, contact between Zn < 2 + > and water molecules is reduced, and generation of zinc negative electrode by-products is inhibited; the zinc-iodine battery also has the advantages of being easy to manufacture and low in cost.

The invention discloses polylactic acid polyol as well as a preparation method and application thereof. The preparation method comprises the following steps: performing a heating reaction on zinc salt, organic ammonium salt and bis (ethylene carbonate) ether to prepare an in-situ catalyst; anions of the organic ammonium salt are selected from any one of bromide ions, chloride ions and iodide ions; and adding a lactide monomer, and carrying out polymerization reaction to obtain the polylactic acid polyol. The polylactic acid polyol prepared by the invention has a flexible chain segment, can provide better flexibility, and can be applied to preparation of a polyurethane material.

The invention relates to the field of photoelectrocatalysis, and provides a preparation method and application of a cerium-based double-layer composite material coated with indium zinc sulfide, and the preparation method comprises the following steps: dispersing Ce (IV)-MOF in DMF and methanol, adding a hydroxyl-containing organic ligand, carrying out room temperature ultrasonic treatment to obtain modified MOF, dispersing the modified MOF in water and glycerin, adding a zinc salt and an indium salt, stirring, adding thioacetamide, stirring, filtering, washing, and drying to obtain the cerium-based double-layer composite material coated with indium zinc sulfide. And heating to obtain the product indium zinc sulfide coated cerium-based double-layer composite material. According to the invention, an ultrasonic-assisted MOF ligand exchange technology is utilized, so that an MOF regular octahedral framework structure is well maintained; the ZnIn2S4 material is compounded through in-situ growth of ZnIn2S4, the compounding synthesis temperature and a solution system are optimized, a ZnIn2S4 double-layer coating structure is obtained, and the yield and dispersity of ZnIn2S4 are improved. And the prepared ZnIn2S4 / MOF composite material has excellent reaction efficiency and stability of photoelectrocatalytic hydrogen production.

The invention provides a preparation method and application of an aqueous composite electrolyte. The preparation method comprises the following steps: uniformly mixing aqueous zinc salt and a water-soluble heterocyclic amine organic additive; and adding deionized water, continuously stirring until the solution is dissolved, and standing until the pH value is stable to obtain the aqueous composite electrolyte. The additive can improve the stability of the aqueous electrolyte, and zinc-philic groups in molecules of the organic additive can form coordinate bonds with zinc ions, so that the molecules of the additive can be adsorbed on the surface of a zinc electrode, electric field distribution on the surface of the electrode is balanced, non-uniform deposition of the zinc ions on the surface of the electrode is prevented, and the stability of the aqueous electrolyte is improved. Dendritic crystal growth caused by too strong local electric field is reduced, meanwhile, the utilization rate of zinc is increased, and the performance of the battery is effectively improved; after the additive molecules are adsorbed on the surface of the zinc electrode, a part of active sites for analyzing hydrogen reaction on the surface of the electrode can be covered, the hydrogen evolution reaction is inhibited, the generation of byproducts is reduced, the coulombic efficiency is improved, and the corrosion resistance and the cycling stability of the zinc negative electrode are effectively improved.

The invention relates to the technical field of ORR catalyst preparation, in particular to an iron-nitrogen-carbon catalyst and a preparation method and application thereof. The invention provides a preparation method of an iron-nitrogen-carbon catalyst, which is characterized by comprising the following steps: dispersing zinc salt and ferrite in methanol to obtain a mixed solution A; the preparation method comprises the following steps: dispersing 2-methylimidazole and 1, 4-terephthalonitrile in methanol under a heating condition to obtain a mixed solution B; stirring and mixing the mixed solution A and the mixed solution B to obtain precursor powder, and calcining the precursor powder in an inert atmosphere to obtain the iron-nitrogen-carbon catalyst with the hierarchical porous structure. The invention provides a novel preparation method for preparing the iron-nitrogen-carbon catalyst with the hierarchical pore structure, and the iron-nitrogen-carbon catalyst with the hierarchical pore structure is prepared by introducing a 1, 4-terephthalonitrile molecular template.

The invention provides a low-molar-concentration I < + > stabilizer / zinc salt aqueous zinc-iodine battery electrolyte and an aqueous zinc-iodine battery, and belongs to the technical field of aqueous zinc-iodine battery electrolytes.The electrolyte comprises the following chemical components: an I < + > stabilizer, other zinc salts, a multi-iodide ion complexing agent, a diluent and water; in the electrolyte, the concentration of the I + stabilizer is 0.5-1.5 mol / L, the concentration of the other zinc salt is 0.5-2.5 mol / L, the mass fraction of the multi-iodide ion complexing agent is 3-15%, and the volume ratio of the diluent to the water is 1: (3-19); the multi-iodide ion complexing agent comprises at least one of polyvinyl alcohol, polyethylene glycol and polyvinylpyrrolidone. The electrolyte can still realize high coulombic efficiency of the aqueous zinc-iodine battery in the presence of a low-molar-concentration I < + > stabilizer / zinc salt, and also can inhibit side reaction at one end of a zinc negative electrode in the cyclic process of the aqueous zinc-iodine battery, shuttle effect of multi-iodide ions in the I- / I2 conversion process at one end of an iodine positive electrode and hydrolysis of I < + > in the I2 / I < + > process, so that the cycle life of the battery is prolonged, and the service life of the battery is prolonged. And the working temperature range is widened, so that the device can stably operate under severe conditions.

The invention belongs to the field of secondary batteries, and particularly relates to an aqueous zinc ion battery electrolyte additive and an electrolyte. The additive is a beta-diketone organic reagent. When the additive is added into the zinc salt-containing electrolyte, dendritic crystal growth and hydrogen evolution corrosion of zinc can be remarkably inhibited, so that the cycle performance and coulombic efficiency of the zinc ion battery are improved. According to the invention, the zinc ion battery has good cycle performance, is easy for industrial production, and has an application prospect in the technical field of energy storage.

The invention provides a method for preparing ultra-small molecular zinc hyaluronate, and relates to the field of hyaluronate. The method comprises the following steps: carrying out enzymolysis on macromolecular sodium hyaluronate by using leech hyaluronidase to obtain ultra-small molecular sodium hyaluronate; the method comprises the following steps: adsorbing ultra-small molecular sodium hyaluronate by using anion exchange resin, eluting by using a zinc salt solution, and reacting the obtained eluent to obtain ultra-small molecular zinc hyaluronate; the average molecular weight of the ultra-small molecular sodium hyaluronate is 600 Da to 1000 Da. The whole process is simple, the obtained ultra-small molecular zinc hyaluronate is high in zinc content, free of sodium ion residues and high in preparation yield, an organic solvent is not needed in the whole production process, and the method is suitable for industrial production.

The invention discloses a high-modulus leather / eutectic gel composite electrolyte and a preparation method and application thereof, and belongs to the technical field of energy storage. The preparation method comprises the following steps: 1) preparing a eutectic gel solution containing polyvinyl alcohol, zinc salt, small molecular polyol and water; 2) carrying out vacuum impregnation to obtain leather fibers containing a eutectic gel solution; and (3) obtaining the leather / eutectic gel composite electrolyte with the imitated reinforcing steel bar-concrete structure through freeze-thaw circulation.The composite electrolyte effectively solves the problem that an existing gel electrolyte is low in modulus and difficult to effectively deal with extreme mechanical deformation, and the cycle life of the water-based zinc ion battery is remarkably prolonged.

The invention belongs to the technical field of functional materials, and provides MOF-5 and preparation and application thereof, and a polymer self-lubricating composite material and preparation and application thereof. The preparation method comprises the following steps: mixing zinc salt, terephthalic acid, an end-capping reagent (polyvinyl pyrrolidone or polyvinyl alcohol), a weak base (triethylamine or sodium acetate) and a solvent, and carrying out ultrasonic treatment. The end-capping reagent and the weak base are added, so that the microstructure of the MOF-5 is lamellar, and the specificity of the crystal face is exposed, and when the MOF-5 is used as a functional filler to be applied to the self-lubricating polymer, the tribological performance can be improved. The MOF-5 mainly provides a reinforcing effect similar to that of crushed carbon fibers, and in the frictional wear process of the polymer self-lubricating composite material and a metal pair, the MOF-5 mainly serves as a bearing phase to bear main loads and makes contact with the metal pair to form a uniform and continuous transfer film on the surface of the metal pair, so that the metal pair is protected against abrasion. The tribological property of the polymer self-lubricating composite material is improved.

The present invention discloses a wide temperature range hydrated eutectic electrolyte and its application in aqueous zinc ion batteries. The wide temperature range hydrated eutectic electrolyte comprises a zinc salt, an alcohol organic solvent and an inorganic additive. The zinc salt is zinc perchlorate hexahydrate; the organic solvent is ethylene glycol; and the inorganic additive is an indium trichloride solution. The hydrated eutectic electrolyte prepared by the present invention enables aqueous zinc ion batteries to exhibit excellent electrochemical properties in a wide temperature range, can effectively inhibit the generation of side reactions such as dendrites and corrosion in aqueous zinc ion batteries, and thus prolong the service life of aqueous zinc ions in a wide temperature range.

The invention belongs to the technical field of electrochemical energy storage, and particularly relates to a low-temperature aqueous electrolyte for anchoring I < + > ions based on a double-coordination structure and a low-temperature four-electron aqueous zinc-iodine battery. The low-temperature aqueous electrolyte is a mixed solution of a zinc salt, an electrolyte additive and water, and the low-temperature aqueous electrolyte comprises 2-5 mol / L of the zinc salt and 0.3-0.6 mol / L of the electrolyte additive; the zinc salt is zinc perchlorate or zinc tetrafluoroborate. The low-temperature four-electron aqueous zinc-iodine battery comprises the low-temperature aqueous electrolyte. Compared with the prior art, the invention at least has the following beneficial effects: (1) the corrosion risk caused by chloride ion concentration is reduced; (2) efficient four-electron iodine positive electrode reaction is realized; and (3) obtaining the low-temperature four-electron aqueous zinc-iodine battery.

The present invention relates to a crop nutrition and fortifying composition comprising: i. Elemental sulfur; ii. One or more water insoluble or water soluble magnesium salts or derivatives or mixtures thereof; iii. One or more water-insoluble or water-soluble potash fertilizers or salts or derivatives or mixtures thereof; iv. One or more water insoluble or water soluble iron salts or derivatives or mixtures thereof; v. One or more water insoluble or water soluble zinc salts or derivatives or mixtures thereof; vi. One or more water-insoluble or water-soluble boron salts or derivatives or mixtures thereof; vii. At least one trace element selected from the group consisting of water-insoluble or water-soluble vanadium salts or derivatives or mixtures thereof and water-insoluble or water-soluble selenium salts or derivatives or mixtures thereof; and viii. One or more excipients wherein the composition comprises microparticles having a size in the range of 0.1 to 50 microns, and wherein the total content of the water-soluble salts, derivatives or mixtures in the composition does not exceed 80% of the total weight of the composition. The invention also relates to a method for preparing the crop nutrition and fortifying composition and a method for treating a plant, a seed, a crop, plant propagation material, a locus, parts thereof or soil with the crop nutrition and fortifying composition.

The invention provides an asphalt-based hard carbon negative electrode material as well as a preparation method and application thereof, belongs to the technical field of battery materials, and is used for solving the technical problems that a template is non-uniformly distributed in a carbon source and the size is difficult to control in hard carbon preparation. The preparation method of the asphalt-based hard carbon negative electrode material comprises the following steps: mixing asphalt and organic zinc salt, and then carrying out heat treatment to obtain high-softening-point asphalt; and pre-oxidizing and carbonizing the high-softening-point asphalt to obtain the asphalt-based hard carbon negative electrode material. Organic zinc salt and asphalt form a metal template in situ at a high temperature, the metal template can be uniformly distributed in the asphalt, meanwhile, the particle size of the template is controlled through process change, and the prepared asphalt-based hard carbon negative electrode material has high reversible specific capacity, high initial coulombic efficiency and good rate capability.

The invention discloses a preparation method and application of a bio-based zinc adenine salt environment-friendly PVC heat stabilizer, and belongs to the field of fine chemical synthesis and plastic additive application. The nitrogen-containing organic metal heat stabilizer adenine zinc complex is prepared by taking adenine and zinc acetate as main raw materials through a one-step method. The method is simple and environment-friendly in preparation process, easily available in raw materials and suitable for industrial production. The prepared heat stabilizer zinc adenine is used as a heat stabilizer, can effectively absorb hydrogen chloride generated by PVC thermal decomposition, and can replace allyl chlorine atoms, so that the heat stability of a PVC product is improved, PVC has more excellent heat stability, and the heat stabilizer is expected to replace a traditional commercially available heat stabilizer.

The invention discloses an IRMOF-1-NH2 / SBS composite modifier as well as a preparation method and application thereof, and belongs to the technical field of asphalt processing. The composite modifier is prepared from the following raw materials in percentage by mass: 28 percent to 35 percent of IRMOF-1-NH2, 53 percent to 61 percent of SBS (Styrene Butadiene Styrene), 0.2 percent to 0.4 percent of an accelerant and 10.6 percent to 14.6 percent of a compatilizer; the preparation method of the IRMOF-1-NH2 comprises the following steps: S1, adding soluble zinc salt and 2-aminoterephthalic acid into a solvent, carrying out ultrasonic treatment, reacting at 120-150 DEG C for 12-24 hours, and separating and washing to obtain a solid product; and S2, heating the solid product obtained in the step S1 at the temperature of 100-150 DEG C for 10-20 hours to obtain the IRMOF-1-NH2 crystal. The compound modifier disclosed by the invention can be used for efficiently storing aromatics, so that the effect of inhibiting the aromatics from being gelatinized is achieved, and the anti-aging performance of asphalt is remarkably improved.