20 results about "Zinc iodide" patented technology

The invention discloses a zinc-bromine flow battery multifunctional electrolyte and a preparation method thereof, and belongs to the technical field of electrochemical energy storage, and the method comprises the following steps: dissolving an electrolyte in a solvent, and sequentially adding a supporting electrolyte, a positive electrode complexing agent and a positive electrode additive to obtain a positive electrode electrolyte; the positive electrode additive is zinc iodide; i <-> in zinc iodide and Br2 in a Br2 / Br <-> reaction system form mixed halide ions, so that the bromine resistance function is achieved, and the overall conductivity and comprehensive electrochemical performance of the electrolyte are improved; dissolving an electrolyte in a solvent, and sequentially adding a supporting electrolyte and a first negative electrode additive to obtain a negative electrode electrolyte; the first negative electrode additive comprises sodium acetate and sodium citrate; sodium acetate and sodium citrate are combined to form a wide-range buffer system, the pH value of the electrolyte can be dynamically adjusted and stabilized, the long-term stability of the battery is improved, the cycle life is prolonged, and the positive electrode electrolyte and the negative electrode electrolyte form the multifunctional electrolyte for the zinc-bromine flow battery; and the zinc deposition behavior is cooperatively regulated and controlled through sodium salt buffering and ion coordination.

The present application relates to a kind of zinc-based coordination polymer and film preparation method and application fluorescent detection of sparteine.Polymer is three-dimensional zinc metal organic framework material, the frame is connected by binuclear zinc and organic ligand to have one-dimensional pore, chemical formula is {NH2(CH3)2·[Zn (TDA)]·DMF·3C2H5OH} n};With fluorescence emission peak at 400nm.It is prepared by hydrothermal reaction by zinc iodide and 4,4'‑(1H‑1,2,4‑triazole‑3,5‑diyl) dibenzoic acid in DMF and ethanol mixed solvent, add acetic acid as regulator.The zinc-based coordination polymer and film prepared by the present application have specific fluorescence recognition function, can quickly and conveniently detect sparteine in water and other solutions, the detection limit is as low as 5.26×10 ‑6 M, high sensitivity and can be recycled.And preparation process is simple, application portable, not dependent on expensive equipment.

This invention discloses a multifunctional electrolyte for zinc-bromine flow batteries and its preparation method, belonging to the field of electrochemical energy storage technology. The method includes: dissolving an electrolyte in a solvent, and sequentially adding a supporting electrolyte, a positive electrode complexing agent, and a positive electrode additive to obtain a positive electrode electrolyte; the positive electrode additive is zinc iodide; the zinc iodide contains I... ‑ With Br2 / Br ‑ In the reaction system, Br2 forms mixed halide ions, achieving bromine inhibition and improving the overall conductivity and comprehensive electrochemical performance of the electrolyte. The electrolyte is dissolved in a solvent, and a supporting electrolyte and a first negative electrode additive are added sequentially to obtain the negative electrode electrolyte. The first negative electrode additive includes sodium acetate and sodium citrate. The combination of sodium acetate and sodium citrate forms a wide-range buffer system, which can dynamically adjust and stabilize the pH value of the electrolyte, improve the long-term stability of the battery, and extend the cycle life. The positive and negative electrode electrolytes constitute a multifunctional electrolyte for the zinc-bromine flow battery. The zinc deposition behavior is synergistically regulated by sodium salt buffering and ion coordination.

This invention discloses a method for iodine recovery and reuse during the preparation of tetrachlorohexafluorobutane, comprising the following steps: S1, preparing trifluorodichloroiodoethane using refined iodine and trifluorochloroethylene as raw materials, and preparing a tetrachlorohexafluorobutane reaction solution using trifluorodichloroiodoethane as raw material; S2, adding water to the tetrachlorohexafluorobutane reaction solution to obtain a soluble solution, oxidizing, filtering, and refining the aqueous phase to obtain refined iodine, and distilling the organic phase to obtain refined tetrachlorohexafluorobutane, an organic solvent containing iodine and zinc iodide, and an organic iodide; S3, washing the organic solvent containing iodine and zinc iodide with an absorbent to obtain an iodide ion aqueous solution, which is then oxidized, filtered, and refined to obtain refined iodine; the organic iodide is catalytically chlorinated to obtain iodine chloride, which is used to prepare trifluorodichloroiodoethane. The entire process of this invention is rapid, environmentally friendly, and has a high iodine recovery rate, making it suitable for large-scale industrial production.

The application discloses a preparation method and application of a niobium tri-aluminum superconducting wire doped with zinc iodide, and relates to the technical field of superconducting materials.In the preparation process, zinc iodide is doped into Nb powder and aluminum powder, a tubular furnace is heated, the zinc iodide is decomposed into Zn and I at about 1150 DEG C, a chemical reaction occurs between I and Nb at about 1150 DEG C, and the decomposition reaction occurs to form Nb while the chemical reaction occurs, the purpose of refining Nb is achieved through the decomposition reaction, the particle size of Nb reacting with Al is reduced, and then the reaction between Nb and Al is more sufficient, in the subsequent RHQ treatment process, a more pure Nb3Al superconducting phase in a stoichiometric ratio of 76:24 is generated, and the smaller Zn particle size can be used as a nano magnetic flux pinning center, so that the superconducting performance of the prepared niobium tri-aluminum superconducting wire is improved, and the niobium tri-aluminum superconducting wire doped with zinc iodide with excellent superconducting performance is obtained.

The invention discloses a quasi-two-dimensional red light perovskite LED device and a preparation method thereof, and belongs to the technical field of light emitting diodes, the preparation method comprises the following steps: depositing a PEDOT: PSS aqueous solution on the surface of a substrate by a spin coating method, and carrying out first-step annealing treatment; tFB and PVK are mixed and dissolved in a chlorobenzene solution, the mixture is deposited on the surface of the substrate subjected to the first-step annealing treatment in a spin coating mode, and second-step annealing treatment is carried out; depositing a calcium lignosulphonate solution on the surface of the substrate subjected to annealing treatment in the second step in a spin coating manner; the preparation method comprises the following steps: dissolving lead iodide, cesium iodide, zinc iodide, 3, 3-diphenylpropylamine iodine, 1-naphthylamine iodine and phenylethylamine iodine into an N, N-dimethylformamide solution to obtain a perovskite precursor solution; dropwise adding a perovskite precursor solution to the surface of the substrate treated in the previous step to prepare a thin film, and carrying out third-step annealing treatment on the thin film; and evaporating an electron transport layer and a cathode electrode on the thin film to obtain the quasi-two-dimensional red light perovskite LED device. The quasi-two-dimensional red light perovskite LED device is small in turn-on voltage, high in brightness and high in external quantum efficiency.

The invention belongs to the technical field of oil field environmental protection, and discloses a method for recovering a high-density solid phase in waste shale gas oil-based drilling fluid, which comprises the following steps: 1) pretreatment: carrying out gel breaking and dehydration on the waste shale gas oil-based drilling fluid, then adding an organic solvent to extract a residual oil phase in the solid phase, and collecting the residual solid phase; 2) preparing a heavy liquid: adding potassium iodide into distilled water, stirring and dissolving, adding zinc iodide, and stirring and mixing to obtain the heavy liquid; and 3) separation treatment: mixing the collected solid phase and the heavy liquid according to a ratio of 1g: 8-15mL, oscillating, standing for 5-8 hours, and separating the solid phase with the density greater than that of the heavy liquid. According to the method, the treatment problem of the waste solid phase of the waste shale gas oil-based drilling fluid can be effectively solved, the solid phases of different densities of the waste oil-based drilling fluid can be fully separated, meanwhile, the method is easy and convenient to operate, accurate control over the density of the heavy liquid is achieved through the complexing effect of the potassium iodide and the zinc iodide heavy liquid, operation is easy and convenient, and secondary pollution is avoided.

The invention discloses a multi-reaction-mechanism positive electrode material as well as a preparation method and application thereof, and belongs to the technical field of preparation of aqueous zinc ion battery positive electrode materials. The preparation method disclosed by the invention comprises the following steps: adding layered vanadium oxide into deionized water, then adding iodide, and stirring to obtain a mixed solution; sequentially centrifuging, washing, drying and grinding the mixture to obtain the multi-reaction-mechanism positive electrode material; the layered vanadium oxide comprises vanadium pentoxide; the iodide is lithium iodide, zinc iodide, ammonium iodide, calcium iodide, sodium iodide or potassium iodide. According to the method, volume expansion and structure collapse caused by repeated embedding / removing of Zn < 2 + > in the circulation process are inhibited, and the stability is improved.

The application discloses a quasi-two-dimensional red light perovskite LED device and a preparation method thereof, and belongs to the technical field of light emitting diodes, wherein the preparation method comprises the following steps: depositing a PEDOT:PSS aqueous solution on a substrate surface by a spin coating method, and performing a first annealing treatment; mixing TFB and PVK in a chlorobenzene solution, and depositing the mixture on the substrate surface after the first annealing treatment by a spin coating method, and performing a second annealing treatment; depositing a calcium lignosulfonate solution on the substrate surface after the second annealing treatment by a spin coating method; dissolving lead iodide, cesium iodide, zinc iodide, 3,3-diphenylpropylamine iodine, 1-naphthalene methylamine iodine and phenylethylamine iodine in an N,N-dimethylformamide solution to obtain a perovskite precursor solution; dropping the perovskite precursor solution on the substrate surface after the above treatment to prepare a thin film, and performing a third annealing treatment on the thin film; and evaporating an electron transport layer and a cathode electrode on the thin film to obtain the quasi-two-dimensional red light perovskite LED device. The quasi-two-dimensional red light perovskite LED device has a small turn-on voltage, high brightness and high external quantum efficiency.

The invention belongs to the technical field of capacitors, and discloses a high-voltage fast-charging hybrid supercapacitor and a preparation method and application thereof. The hybrid supercapacitor comprises a positive electrode, a negative electrode, a diaphragm and an electrolyte, the positive electrode comprises a positive current collector and a positive active layer combined on the surface of the positive current collector, and the negative electrode comprises a negative current collector and a negative active layer combined on the surface of the negative current collector; the electrolyte comprises a molecular catalyst and a fluorine-containing organic solvent; the molecular catalyst comprises one or more of sodium iodide, sodium chloride, magnesium chloride, cobalt chloride, ammonium chloride, ammonium iodide, cobalt bromide, sodium bromide, aluminum bromide, lithium bromide, lithium iodide, zinc chloride and zinc iodide; the fluorine-containing organic solvent comprises a fluoro-carbonic ester organic solvent and / or a fluoro-ether organic solvent. The hybrid supercapacitor provided by the invention has the advantages of rapid charging and discharging capability, high working voltage, high energy density, high power density and excellent cycle life, and is suitable for higher energy storage and release requirements.

The present invention discloses a method for synthesizing 1,1-diboryl olefins. Under an inert gas atmosphere, an alkynyl boron compound, pinacol borane, and a mixed catalyst are stirred and mixed in an organic solvent. After thorough mixing, the reaction is heated to obtain 1,1-diborylated olefins. The reactants have a wide source, are easy to prepare, and have a low cost. The mixed catalyst is a mixture of neodymium bistrimethylsilylamide and a zinc catalyst, and the zinc catalyst is zinc bromide or zinc iodide. Under the catalysis of this mixed catalyst, the reaction rate can be greatly accelerated, the reaction time can be shortened, and finally an ideal product can be obtained with a high product yield. The reaction temperature of the present invention is 100-130 °C, and the reaction time is 36-50 h. The reaction conditions are very mild, easy to achieve, and safe. The yield of the present invention is not less than 78%, and a series of 1,1-diboryl olefins can be prepared. This method has strong substrate generality and is worthy of popularization.

The invention belongs to the technical field of aqueous secondary batteries, and particularly relates to a preparation method of an electrolyte and application of the electrolyte in a zinc-sulfur secondary battery, the electrolyte is composed of ultrapure water, an amide organic solvent, a soluble zinc salt electrolyte and an iodine-containing additive; wherein the iodine elementary substance or zinc iodide of the iodine-containing additive can serve as a redox medium to promote electrochemical oxidation of ZnS in the charging process of the zinc-sulfur secondary battery; the mixed system of the amide organic solvent and the ultrapure water is adopted, so that the wettability of the sulfur electrode can be effectively improved, the sulfur conversion reaction kinetics can be improved, the water activity in the electrolyte can be reduced, the hydrogen evolution side reaction can be inhibited, the dendritic crystal formation of the zinc metal negative electrode can be prevented, and the cycling stability of the zinc-sulfur secondary battery can be remarkably enhanced; the electrolyte provided by the invention is low in cost, efficient and environment-friendly, and has important significance on large-scale application of high-performance zinc-sulfur secondary batteries.

The invention discloses a deep eutectic solvent electrolyte for a zinc-iodine battery as well as a preparation method and application of the deep eutectic solvent electrolyte. The electrolyte comprises a deep eutectic solvent and zinc iodide; wherein the eutectic solvent comprises a hydrogen bond acceptor which is selected from choline chloride; the invention discloses a low-eutectic solvent, which comprises the following components in percentage by mass: 1-50 percent of low-eutectic solvent, 1-50 percent of hydrogen bond donor and 1-50 percent of deionized water. According to the technical scheme provided by the invention, the problems of Zn dendritic crystal, iodine shuttling and the like caused by the aqueous zinc-iodine battery electrolyte are well solved, and the zinc-iodine battery containing the electrolyte has the characteristics of high battery capacity, high coulombic efficiency, long cycle life and the like.

The invention relates to the field of the oil production industry, and more particularly to heavy well kill fluids containing at least one of the compounds: calcium bromide, barium bromide, magnesium bromide, strontium bromide, zinc bromide, calcium iodide, barium iodide, magnesium iodide, strontium iodide and zinc iodide, and to methods for producing same. The invention discloses a method which makes it possible to broaden the range of components that can be used to produce heavy kill fluids. The claimed method makes it possible to produce a heavy well kill fluid using accessible salt solutions, wherein the resulting fluid has the necessary properties for effectively killing wells. The claimed method includes mixing solutions of salts at a molar ratio of 0.5-1.3:2, evaporating the resulting mixed solution to a density of 1400-2650 kg / m3, cooling the evaporated solution to a temperature of less than 25°C to form a precipitate, and filtering the evaporated solution to obtain a filtrate in the form of a heavy well kill fluid.

The invention discloses a light-activated chiral zinc complex material with adjustable circular polarization afterglow as well as a preparation method and application of the light-activated chiral zinc complex material, and belongs to the field of circular polarization afterglow materials. The chiral zinc complex material is obtained by self-assembling zinc iodide and an S-(-)-1, 1 '-binaphthyl-2, 2'-diphenylphosphine ligand at room temperature and adopting an interface diffusion method, the molecular formula of the chiral zinc complex material is S-Zn (BINAP) I2, rapid and simple mass synthesis is achieved, the chiral zinc complex material has good solubility and stability, technical support is provided for further application of the material, and the chiral zinc complex material is suitable for industrial production. And a foundation is provided for subsequently preparing a thin film material. According to the prepared polymethyl methacrylate film doped with the chiral zinc complex material and the polymethyl methacrylate film doped with the chiral zinc complex material and rubrene, the film material shows multicolor circular polarization afterglow after being irradiated by ultraviolet light, and the film material has the advantages that the film material can be used for preparing the polymethyl methacrylate film doped with the chiral zinc complex material and the rubrene; the method has important application value in the security fields of dynamic multiple anti-counterfeiting, advanced information encryption and the like.

This invention provides a zinc iodide-fullerene composite cathode material, its preparation method, and its application. The cathode material preparation method includes: Step 1: Mechanically mixing zinc iodide and fullerene powders, then placing them in a reaction vessel under vacuum; Step 2: Inert gas is introduced for pressurization; Step 3: Heating and melting the mixture; Step 4: After cooling, the powder is removed and mechanically ground and pulverized to obtain the zinc iodide-fullerene composite cathode material. The cathode preparation method includes: Step 1: Placing the zinc iodide-fullerene composite cathode material and a conductive agent in a quartz mortar and grinding them thoroughly; Step 2: Adding a solvent to the above mixed powder, stirring, then adding a binder, and stirring until uniform; stirring until a semi-dry agglomerate is formed; Step 3: Rolling the obtained semi-dry agglomerate, then pressing it in a fixture, drying it at 45°C, removing the solvent, and obtaining a self-supporting cathode film. The preparation method of this invention can produce batteries with higher loading capacity and better capacity performance.

The application relates to a light emitting diode, in particular to a quantum dot light emitting diode, a preparation method and a light emitting device, which provides a prefabricated quantum dot solution, the prefabricated quantum dot solution comprises quantum dot main materials and long-chain ligands, the prefabricated quantum dot solution is mixed with an ethanol solution of sodium thiocyanate, and stirring is carried out at 70 DEG C-100 DEG C for 20 min-60 min, post-treatment is carried out, and a ligand quantum dot solution is formed; the ligand quantum dot solution is spin-coated on a hole transport layer, and first annealing treatment is carried out, so that a preliminary quantum dot layer is formed; an ethanol solution of zinc iodide is spin-coated on the preliminary quantum dot layer, is placed, is rinsed, and second annealing treatment is carried out, so that a quantum dot light emitting layer is formed; and an electron transport layer and a cathode are sequentially formed on the quantum dot light emitting layer. Through the method of liquid-solid ligand exchange and passivation of quantum dots, the light emitting efficiency and brightness of the device are effectively improved, and the stability of the device is improved.

The present invention relates to a preparation method of cesium copper iodide nanocrystal-embedded polymer composite materials, which comprises the following steps: S1: After mixing cuprous iodide, zinc iodide, oleic acid, oleylamine and octadecene, the temperature is raised until cuprous iodide is completely dissolved to obtain a copper iodide precursor solution; S2: In the copper iodide precursor solution obtained in S1, a preheated cesium oleate precursor solution is added, and after the reaction is completed, a Cs3Cu2I5 nanocrystal solution is obtained through post-treatment; S3: In the Cs3Cu2I5 nanocrystal solution obtained in S2, an EVA organic solution is added and mixed to obtain a cesium copper iodide nanocrystal-embedded polymer composite material. The present invention achieves the purpose of obtaining high-quality Cs3Cu2I5 NCs with uniform size and morphology, and realizes the application of nanocrystal-embedded polymer composite materials in X-ray scintillators.

The invention relates to an aqueous zinc-sulfur battery electrolyte and a preparation method and application thereof, and belongs to the technical field of aqueous zinc-sulfur batteries. The aqueous zinc-sulfur battery electrolyte comprises a zinc salt, an additive and a solvent, and the additive is zinc iodide and lignin. The additive lignin used in the method is high in natural resource abundance, low in cost and environmentally friendly; and rich active functional groups such as hydroxyl and carboxyl in the lignin have a strong chemical adsorption effect on the polyiodide, so that the maximum catalytic effect of ZnI2 in the S8ZnS conversion reaction is ensured, and meanwhile, shuttling of the polyiodide and loss of ZnI2 are inhibited, so that the conversion reversibility of an iodine redox medium and S8ZnS is stabilized, and the conversion efficiency of the S8ZnS is improved. And thus, the self-discharge resistance, the rate capability and the cycling stability of the battery are improved. Meanwhile, the preparation process is simple and convenient, high in repeatability and wide in industrial application prospect.

The invention discloses a method for recycling iodine in a tetrachlorohexafluorobutane preparation process, which comprises the following steps: S1, preparing trifluorodichloroiodoethane by using refined iodine and trifluorochloroethylene as raw materials, and preparing tetrachlorohexafluorobutane reaction liquid by using trifluorodichloroiodoethane as a raw material; s2, adding water into the tetrachlorohexafluorobutane reaction liquid, oxidizing, filtering and refining a water phase to obtain refined iodine, and rectifying an organic phase to obtain refined tetrachlorohexafluorobutane, an organic solvent containing iodine and zinc iodide and organic iodide; s3, washing the organic solvent containing iodine and zinc iodide with an absorbent to obtain an iodide ion aqueous solution, and oxidizing, filtering and refining to obtain refined iodine; the organic iodide is subjected to catalytic chlorination to obtain iodine chloride which is used for preparing trifluorodichloroiodoethane. The whole process is rapid in reaction, environmentally friendly, high in iodine recovery rate and suitable for large-scale industrial production.