2483 results about "Zinc ion" patented technology

The invention discloses a complex electrolyte additive for a battery, an aqueous zinc ion battery electrolyte and an aqueous zinc ion battery. The electrolyte additive is a complex containing metal complex ions; the complex is composed of a central ion and an internal ligand. The electrolyte additive can respectively form metal and alloy electrode-electrolyte interfaces on the surface of a zinc negative electrode through replacement and electrochemical reaction, and regulate and control the deposition behavior of zinc ions to inhibit the generation of zinc dendrites and accelerate deposition / dissolution kinetics, so that the service life of the zinc negative electrode is remarkably prolonged, and the rate capability is enhanced; a solvation structure of zinc ions can be regulated and controlled, side reactions such as hydrogen evolution, corrosion and passivation are slowed down, and capacity fading of the water-based zinc ion battery can be remarkably delayed when the positive electrode is coupled with a high-efficiency positive electrode; meanwhile, the aqueous zinc ion battery electrolyte additive is low in price, green, environment-friendly, high in functionality and beneficial to development of an aqueous zinc ion battery electrolyte and an aqueous zinc ion battery which are excellent in performance, safe, environment-friendly and low in cost.

The invention belongs to the technical field of aqueous zinc ion batteries, and discloses an aqueous zinc ion battery negative electrode coating material and a preparation method and application thereof. Coumarin hydrazide reacts with benzyl isothiocyanate to generate a multi-nitrogen-oxygen-sulfur heteroatom ligand capable of coordinating with zinc ions, and the required aqueous zinc ion battery negative electrode coating material LXB-Zn is further prepared by doping with polyvinylidene fluoride. The synthesized aqueous zinc ion battery negative electrode coating material contains imino groups and heteroatoms S, O and N, can inhibit a hydrogen evolution reaction and provides more active sites, so that dendrites and side reactions are inhibited, and the cycling stability of an aqueous zinc ion battery is effectively improved. In order to solve the problem that an organic coating of a water-based zinc ion battery negative electrode is difficult to prepare, the organic coating of the water-based zinc ion battery negative electrode is prepared by adopting a simple method of adding an adhesive.

The invention discloses a modified zinc electrode material as well as a preparation method and application thereof, 3, 4-ethylenedioxythiophene, lauryl sodium sulfate and potassium perchlorate are taken as electrolyte, and the surface of a zinc electrode is coated with an organic polymer coating in an electrochemical polymerization manner, so that the problems of dendritic crystal growth, side reaction, corrosion and the like of the zinc electrode are solved; the cycling stability and reversibility of the zinc electrode are improved; meanwhile, the coating has hydrophilicity and better electrolyte wetting capacity, zinc ions are helped to be rapidly diffused on an electrode, and the polarization influence caused by concentration difference in the cycle process of the battery is relieved. Besides, by controlling the electrochemical polymerization time, the thickness of the coating is controlled, and the method has the advantages of simplicity, rapidness and the like and is suitable for large-scale popularization and application.

The invention discloses a zinc negative electrode protective layer material of an aqueous zinc ion battery as well as a preparation method and application of the zinc negative electrode protective layer material. The method comprises the following steps: dispersing a carbon material in an acidic liquid, stirring at room temperature, and fully mixing to obtain a uniform suspension; adding manganese salt into the mixed solution, stirring at room temperature, and then performing constant-temperature water bath; washing, centrifuging, drying and calcining a product obtained by the reaction to obtain expanded graphite; uniformly dispersing expanded graphite in a solvent, and stirring to obtain a dispersion liquid; adding a titanium-containing organic compound into the dispersion liquid and stirring; adding deionized water into the dispersion liquid and refluxing; and centrifuging, washing, drying and calcining to obtain the protective layer. According to the composite material, expanded graphite is prepared firstly, and then titanium dioxide quantum dots are anchored on the expanded graphite. Due to excellent zinc ion rate, compared with the prior art, the material has lower interface resistance and good cycling stability and rate capability, and the problems of interface dendritic crystal growth and the like are solved.

The invention belongs to the technical field of aqueous zinc ion batteries, and discloses a zinc ion battery gel electrolyte as well as a preparation method and application thereof. The preparation method of the zinc ion battery gel electrolyte comprises the following steps: adding a propylene derivative and cellulose into an electrolyte solution, and uniformly stirring to obtain a solution A; adding inorganic nanoparticles into the solution A, and uniformly dispersing to obtain a solution B; and adding an initiator and a cross-linking agent into the solution B, uniformly stirring, defoaming, and polymerizing in a mold to obtain the zinc ion battery gel electrolyte. The gel electrolyte is simple in preparation method and low in cost, has good mechanical performance, corrosion resistance, electrochemical performance and cycling stability, can stably circulate for more than 1000 hours after being assembled into the zinc ion battery, is a gel electrolyte with high safety and efficient stability, and has an important application prospect in the zinc ion battery.

The invention provides a zinc negative electrode and gel electrolyte integrated structure and a preparation method thereof and a zinc ion battery, the integrated structure comprises a zinc negative electrode and a gel electrolyte layer combined on the surface of one side or two sides of the zinc negative electrode in situ, the gel electrolyte layer comprises a polymerization product of a zinc acrylate monomer, an acrylic monomer and a gel substance, the zinc ion battery has the advantages of no anion interference, high ionic conductivity, excellent contact with a zinc negative electrode and the like, can be applied to the field of batteries, and can effectively avoid an electrode concentration polarization effect, enhance the desolvation capability of zinc ions and prolong the cycle life of the batteries. The preparation method comprises the following steps: arranging a mixed raw material solution containing a zinc acrylate monomer, an acrylic monomer and a gel substance on the surface of the zinc negative electrode, and carrying out ultraviolet polymerization to generate a single-ion conductive dual-network polymer, namely the gel electrolyte layer, on the surface of the zinc negative electrode in situ. The method is suitable for industrial production.

The invention provides a precipitation method of a heavy metal solution. Cations in the heavy metal solution comprise nickel ions, cobalt ions, copper ions, zinc ions and manganese ions, and the precipitation method comprises the following steps: step S100, carrying out a manganese conversion reaction on an alkaline substance by adopting a solution containing manganese ions to obtain a converted manganese precipitate; s200, a stabilizing agent is adopted for carrying out a stabilizing reaction on the converted manganese precipitate, and a stable manganese precipitate is obtained; step S300, adding the stable manganese precipitate into a heavy metal solution for precipitation reaction to obtain precipitate slurry; step S400, continuously carrying out solid-liquid separation on the precipitate slurry to obtain a heavy metal precipitate and a manganese-containing solution; and S500, raw materials including the manganese-containing solution, an oxidizing agent and alkali liquor are subjected to an oxidation precipitation reaction, and a post-precipitation solution and a manganese product are obtained. The method solves the problems of poor sedimentation and filtration performance of a precipitation product, high moisture content of the precipitation product and low precipitation efficiency when heavy metals are precipitated in the heavy metal solution.

The invention relates to the field of air filtration, in particular to a method for rapidly preparing ZIF-8 / polypropylene melt-blown cloth fiber membranes in batches at low cost. Aiming at the problems of high cost, long preparation time, complex process and the like of the existing method for growing ZIF-8 on the surface of polypropylene melt-blown cloth to improve the air filtering performance, the invention provides a method for rapidly preparing ZIF-8 / polypropylene melt-blown fiber membranes in batches at low cost. The preparation method comprises the following steps: firstly, pretreating the surface of polypropylene melt-blown cloth by using an inorganic aqueous alkali solution, then sequentially putting the melt-blown cloth into a zinc ion aqueous solution and a 2-methylimidazole / N, N-dimethylformamide mixed aqueous solution under an ultrasonic condition, and drying to prepare the ZIF-8 / polypropylene melt-blown fiber membrane. According to the preparation method, water is taken as a main solvent, and a small amount of N, N-dimethylformamide is added into the water, so that rapid growth on polypropylene melt-blown cloth at a small molar ratio of 2-methylimidazole to zinc nitrate hexahydrate is realized, and the preparation method is suitable for large-scale industrial production for air filtration.

The invention relates to an application of a curcumin-zinc organic framework compound as an active ingredient in preparation of a medical instrument for treating alopecia. Through verification, curcumin and zinc ions are prepared into an MOF structure (ZnMOFs), and the MOF structure (ZnMOFs) is encapsulated by gamma-polyglutamic acid (gamma-PGA) to prepare the soluble microneedle patch (ZnMOF-MNs) which is used for promoting hair growth under various adverse conditions. In-vitro studies find that ZnMOFs can protect DPCs from apoptosis caused by zinc deficiency and oxidative stress.

The invention discloses a zinc negative electrode and a preparation method and application thereof. The zinc negative electrode comprises a polycatechol coating; and the thickness is 10 nm to 1 [mu] m. The method has the advantages of being green, environmentally friendly and low in cost. Catechol has zinc affinity and can be stably combined with zinc metal to form an ultrathin protection layer, compared with other organic matter coating methods (the process is complex and raw materials are expensive), the method is simpler and rapider, no binder or expensive medicine is needed, the zinc foil only needs to make contact with a modified solution for a certain time, practicability is high, and the method is suitable for large-scale production. The application prospect of large-scale continuous preparation is realized. The added oxidizing agent has the function of accelerating reaction, other metal ions can be introduced to be chelated with catechol, the deposition behavior of zinc ions is further optimized and regulated, and the battery performance is improved. The cycle life of the modified zinc negative electrode battery can reach more than 500h.

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 discloses preparation and application of an organic-inorganic interface layer modified zinc negative electrode. The preparation method comprises the following steps: firstly, dispersing organic polymer polylactic acid and zinc sulfide powder into tetrahydrofuran, then coating the surface of zinc foil with the dispersed solution, and drying a solvent at 70 DEG C, so as to prepare the zinc negative electrode modified by an organic-inorganic interface layer. According to the interface layer, zinc ion deposition is regulated and controlled, and the problem of zinc dendrite growth is solved. In addition, the polylactic acid-zinc sulfide composite coating can effectively improve the redox kinetics of zinc ions and improve the coulombic efficiency of the zinc negative electrode. Due to the good ionic conductivity, the interface modification layer can improve diffusion of zinc ions, and the polarization influence caused by the concentration gradient of the zinc ions is relieved. Therefore, the prepared polylactic acid-zinc sulfide composite interface layer modified zinc negative electrode symmetric battery has more excellent cycling stability, the half battery has more stable coulombic efficiency, and the assembled total battery has more prominent capacity retention rate.

The invention relates to application of Ackermania muciniphila Akk09 in preparation of an element absorption enhancer and a product of the Ackermania muciniphila Akk09, belonging to the technical field of microorganisms. The invention provides application of Akkermansia muciniphila Akk09 with the preservation number of CCTCC (China Center For Type Culture Collection) NO: M 20242401 in preparation of an element absorption enhancer and in preparation of a medicine for treating element deficiency, and further provides the Akkermansia muciniphila Akk09 containing the Akkermansia muciniphila Akk09 and the medicine for treating the element deficiency based on the application. The Akk09 provided by the invention can effectively promote the transport of iron ions, zinc ions and selenium ions and enhance the absorption of iron, zinc and selenium ions.

The invention discloses a zinc-bromine flow battery multifunctional negative electrode electrolyte and a preparation method thereof, and belongs to the technical field of electrochemical energy storage, and the method comprises the following steps: uniformly stirring and mixing a solvent, deionized water and a cosolvent, adding an electrolyte, stirring until the electrolyte is completely dissolved, then adding a supporting electrolyte and a negative electrode additive, stirring until the supporting electrolyte and the negative electrode additive are completely dissolved, and obtaining the zinc-bromine flow battery multifunctional negative electrode electrolyte. The multifunctional negative electrode electrolyte of the zinc-bromine flow battery is obtained; the negative electrode cosolvent is dimethylformamide; and the negative electrode additive is at least one of saponin and cinnamyl aldehyde. Saponin molecules are adsorbed on the surface of the zinc electrode, and electronegative carboxyl groups of the saponin molecules form an electrostatic repulsion net in an electric double layer, so that zinc ions are forced to be uniformly dispersed, local ion concentration hot spots are eliminated, and dendritic crystal nucleation is inhibited from the source. In cinnamyl aldehyde, the strong electronegativity of oxygen atoms and the electronegativity of aldehyde oxygen are far higher than those of hydrogen, so that electrons are strongly attracted, adjacent carbon atoms are positively charged, polar adsorption sites are formed, the hydrogen evolution reaction is effectively inhibited, and the stability and the cycle life of the battery are greatly improved.

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 discloses a low-temperature zinc ion battery high-entropy eutectic electrolyte and a preparation method and application thereof, and relates to the field of batteries, the electrolyte comprises a hydrogen bond donor, a hydrogen bond acceptor and a solvent; the hydrogen bond donor is at least one of methyl sulfonamide, thioformamide, butyramide, asparagine, tert-butylamine, dimethyl propane diamine, oxalyl diamine, benzamide, sulfamide and ethyl sulfonamide; the hydrogen bond receptor is at least one of aspartic acid, glutamic acid, methionine, zinc chloride, zinc perchlorate, zinc fluoborate and zinc acetate; the preparation method comprises the following steps: mixing a hydrogen bond donor and a hydrogen bond acceptor, and heating to convert a solid into a liquid phase; and adding a solvent, and uniformly mixing to obtain the product. The invention also provides a zinc ion battery containing the electrolyte. The high-entropy eutectic electrolyte has the beneficial effects that-NH2 and halogen or carboxyl form hydrogen bonds to perform eutectic reaction, the freezing point of the eutectic solution is lower than that of a reactant, and the solvent is added to improve the confusion degree of the electrolyte, so that the high-entropy eutectic electrolyte is prepared.

Disclosed is a preparation process for a magnetic healthcare fabric with antibacterial infrared properties. The preparation process for the magnetic healthcare fabric with antibacterial infrared properties comprises: BFO preparation, nano ZnO dispersion liquid preparation, magnetic BFO@ZnO particle preparation, and magnetic fiber preparation. A spinning process comprises: cotton opening and cleaning, cotton carding, drawing, roving, spinning, bobbin winding and weaving. The release of Zinc ion (Zn2+) serves as a main antibacterial mechanism of nano ZnO, and coffee carbon fiber has an outstanding far-infrared emission function, which acts on skin to improve body microcirculation and alleviate fatigue from exercising. The fabric has antibacterial, fatigue-alleviating, moisture-wicking, quick-drying, and cooling characteristics.

The invention relates to a carbon nanofiber loaded Cu nanoparticle composite material prepared by combining an electrostatic spinning method and a high-temperature in-situ reduction reaction and used as a high-cycle-stability zinc negative electrode coating of an aqueous zinc ion battery. Belongs to the technical field of new energy materials. The prepared composite electrode material is regular in structure and excellent in electrochemical performance. Cu is introduced through a high-temperature in-situ reduction reaction. And after the Cu is loaded with the carbon nanofibers, not only is the slow dynamic process of the bare zinc electrode improved, but also the uniform deposition of Zn < 2 + > on the zinc negative electrode in the embedding / separating process is induced.

The invention discloses a zinc polyphenol complex suppository as well as a preparation method and application thereof. The preparation process mainly comprises two steps as follows: a, preparation of EGCG-Zn metal polyphenol complex nanoparticles; and b, preparing the nano complex suppository. The method is simple in process, green, environment-friendly and suitable for large-scale preparation. The prepared EGCG-Zn nanoparticles are uniform in particle size and good in stability, and have good antioxidant, anti-inflammatory and tissue repair activity based on a complex network structure formed by self-assembly of EGCG and zinc ions. The nano-particles are firstly treated by adopting a drug pretreatment carrier and then loaded in a suppository matrix to construct a rectal administration type nano-suppository, so that targeted and continuous local drug effect release can be realized. In intervention of radioactive intestinal injury, the suppository not only can relieve oxidative stress and inflammatory response, but also can promote regeneration and repair of intestinal mucosa, and has good treatment potential and clinical application prospect.

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 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 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 aqueous zinc ion batteries, and discloses a preparation method and application of an aqueous zinc ion battery negative electrode coating material. The composite material is a silver-loaded carbon nitride composite material, and the composite material is used as a water-based zinc ion battery negative electrode artificial interface layer. A silver-loaded carbon nitride composite nano material is used as a zinc negative electrode interface coating. Silver nano ions can effectively improve electrostatic shielding on the surface of the zinc negative electrode, zinc ions are easier to deposit, and growth of zinc dendrites is inhibited; the material has excellent mechanical strength and chemical stability, so that the corrosion of electrolyte to the negative electrode is effectively inhibited; the protective layer is simple in preparation process, the prepared coating is high in adhesive force, a stable interface layer is easy to form, the half-cell cycle efficiency stability is obviously improved, the half-cell can stably circulate for 1323 circles, and the service life of the water-based zinc ion battery is prolonged.

The present invention discloses an aqueous zinc-ion battery, comprising: a positive electrode sheet, a negative electrode sheet and an electrolyte. The positive electrode material of the positive electrode sheet is a layered vanadium-based positive electrode material. Since cations and water molecules are inserted into the layers of vanadium pentoxide, the interlayer spacing is increased and the structure of the host material is supported and stabilized. Therefore, the fast and reversible insertion and extraction performance of charge and discharge ions can be improved, and the high rate and long cycle life of the layered vanadium-based positive electrode material can be achieved. The negative electrode sheet is a zinc foil with a surface coating. By defining the thickness of the surface coating to be 100 nm to 20 μm, the surface coating can prevent the zinc foil from directly contacting the electrolyte, and zinc will be deposited between the coating and the zinc foil during the charge and discharge process. In this way, the direct contact between zinc and the electrolyte is avoided, which helps to solve problems such as dendrites, corrosion and hydrogen evolution of the zinc negative electrode. Compared with the traditional aqueous zinc-ion battery, the electrochemical performance of this aqueous zinc-ion battery is enhanced.

The invention discloses a nitrogen-doped zinc ion battery manganese-based positive electrode material and a preparation method and application thereof, and the preparation method comprises the following steps: mixing a strong oxidant and a manganese salt, putting the mixture into a beaker, adding deionized water, and uniformly stirring to form a mixed solution; transferring the mixed solution into a high-pressure reaction kettle with a polytetrafluoroethylene lining, and heating the high-pressure reaction kettle in a drying oven; cooling, precipitating, filtering and washing for multiple times, and then putting into a drying oven for vacuum drying to obtain an original manganese-based positive electrode material; the preparation method comprises the following steps: respectively weighing an original manganese-based positive electrode material and hexamethylenetetramine, flatly laying the original manganese-based positive electrode material at the bottom of a lining of a reaction kettle, and putting the hexamethylenetetramine into a beaker; and putting the beaker into a reaction kettle, moving the beaker and the reaction kettle into a drying oven, and heating to obtain the surface nitrogen-doped manganese-based positive electrode material.

The invention provides a preparation method and application of a zinc negative electrode with an MCM-41 protective layer, and relates to the field of electrochemical energy storage materials. The preparation method comprises the following steps: firstly, heating and stirring hexadecyl trimethyl ammonium bromide, sodium hydroxide and deionized water for 1.5 hours, then adding tetraethoxysilane, heating and stirring for 2 hours to obtain a mixed solution, aging the obtained mixed solution in an air atmosphere for 15 hours, centrifugally washing, drying, putting into a porcelain boat, heating to 550 DEG C at a constant speed, calcining for 4 hours, and naturally cooling to obtain MCM-41 powder. And grinding and mixing the obtained MCM-41 powder and polyvinylidene fluoride, dropwise adding N-methyl pyrrolidone, stirring to prepare slurry, uniformly coating the surface of a zinc metal negative electrode with the obtained slurry through a scraper, and carrying out vacuum drying to obtain the zinc negative electrode with the MCM-41 protective layer. The MCM-41 material is used as a zinc negative electrode protection layer to inhibit the growth and corrosion passivation of metal zinc negative electrode dendrites in the charging and discharging process of a zinc ion battery, so that the cycling stability and the electrochemical performance of the battery are greatly improved.

The invention discloses a slow-release coating for pesticide-fertilizer particles and a preparation method of the slow-release coating, and belongs to the technical field of biological agriculture. The coating is composed of 30-60 parts of potassium fulvate, 20-40 parts of a high polymer material, 5-15 parts of a lubricant, 5-10 parts of a binder and 1-10 parts of a performance additive, the performance additive is prepared into nanoparticles through tetraethoxysilane and 11-chlorodecanoic acid, and the nanoparticles are modified through a silane coupling agent and then crosslinked with chitosan to form a composite structure. According to the preparation method, a double-screw gradient mixing process (800-1200 rpm, 40 + / -5 DEG C) is adopted, and fluidized bed atomization spraying and three-stage drying are combined. According to the technical breakthrough, the utilization rate of zinc ions is increased to 68.2% from 41.5%, the coating crushing strength reaches 48.3 N, the 28d zinc release amount is 12.3 mg / L, and the 30d degradation rate is 14.2%. Through the synergistic effect of pH buffering of potassium fulvate and modified nanoparticles, the problems of zinc immobilization and phosphorus-zinc antagonism of high-pH soil are effectively solved, the fertilizer is suitable for corn, rice and other crops, and field tests show that the yield is increased by 18.7%.

The invention discloses a method for enhancing Candida albicans biofilm resistance of azole drugs by using a zinc ion chelating agent, through the combined action of the zinc ion chelating agent N, N, N ', N'-tetra (2-picolyl) ethylenediamine (TPEN) and fluconazole, the activity of the Candida albicans biofilm can be reduced, and the Candida albicans biofilm can be enhanced. The early-stage adhesion process, the medium-stage yeast-to-hypha conversion process and the late-stage maturation process formed by the candida albicans biological membrane are inhibited, the structure of the candida albicans biological membrane is destroyed, then the high drug resistance of the candida albicans biological membrane to fluconazole is reversed, and the pathogenicity of the fluconazole is reduced; the problems of high drug resistance and sustained infection caused by the formation of a candida albicans biofilm are hopefully solved, and a direction is provided for the treatment of clinical fungal infection and the research and development of drugs.

The invention discloses zinc ion battery electrolyte as well as a preparation method and application thereof, and belongs to the technical field of ion battery electrolyte. According to the preparation method disclosed by the invention, the coumarin derivative is added into the basic zinc salt solution, so that the uniform deposition of zinc ions can be promoted at a low temperature of-20 DEG C or below, the formation of dendritic crystals is remarkably reduced, and a stable protective layer is formed on the surface of the zinc anode, and the protective layer can maintain high reversibility of the battery at a normal temperature, and also can be used for preparing a lithium ion battery. And the stability can be kept in a low-temperature environment, so that the battery can show excellent electrochemical performance under different temperature conditions, and the technical problem of the electrochemical performance of the water-based zinc ion battery (ZIBs) in the low-temperature environment is solved.

The invention discloses a lignin-based hard carbon material with high platform capacity, a preparation method thereof and an application of the lignin-based hard carbon material in a sodium-ion battery. According to the method, rich oxygen-containing functional groups of lignin are utilized to adsorb zinc ions, zinc is uniformly dispersed in lignin molecules in an atomic manner, and agglomeration growth of generated ZnO is inhibited through uniform distribution of zinc and a three-dimensional network structure of lignin, so that nano ZnO serving as a template can be highly dispersed in a carbon material while the size uniformity is ensured; the lignin-based hard carbon material prepared by the method is high in specific surface area and uniform in pore structure, and is converted into a closed pore structure by opening pores under high-temperature carbonization, so that the closed pore volume of the material is increased, and the prepared lignin-based hard carbon material has extremely high platform capacity.