293results about "Zinc compounds" patented technology

The invention belongs to the technical field of halide solid-state electrolyte, and relates to a high-conductivity and high-lithium-stability modified halide solid-state electrolyte material constructed by solid source plasma, and a preparation method and application of the high-conductivity and high-lithium-stability modified halide solid-state electrolyte material. According to the preparation method, a halide solid electrolyte is taken as a matrix, halogenated ammonium salt is taken as a solid source, and the halide solid electrolyte is subjected to synergistic doping modification of elements such as nitrogen, fluorine / chlorine / bromine and the like by utilizing a plasma technology, so that the modified halide solid electrolyte material is obtained. The modified halide solid electrolyte material shows excellent conductivity and lithium-lithium symmetrical battery performance, and has a wide market application prospect. Meanwhile, the preparation method provided by the invention is simple, rapid, efficient and convenient, is easy to control, and contributes to promoting the development and application of the high-performance halide solid electrolyte material.

A method for preparing a ZnSe quantum dot, a ZnSe quantum dot, a ZnSe structure and a display device are provided. The method includes preparing a first zinc precursor solution, a second zinc precursor solution, a first selenium precursor solution, and a second selenium precursor solution with a lower reaction activity than the first selenium precursor solution, adding the first selenium precursor solution to the second zinc precursor solution to form an intermediate of the ZnSe quantum dot, performing the following operation at least once to form the ZnSe quantum dot: sequentially adding the first zinc precursor solution and the second selenium precursor solution to the intermediate of the ZnSe quantum dot and making the first zinc precursor solution, the second selenium precursor solution, and the intermediate of the ZnSe quantum dot react.

Provided is a semiconductor nanoparticle complex in which a ligand is coordinated to a surface of a semiconductor nanoparticle. The semiconductor nanoparticle includes In and P, the ligand includes a mercapto fatty acid ester represented by the following general formula, and the mercapto fatty acid ester has an SP value of 9.30 or less. General formula: HS-R1-COOR2 (where R1 is a C1-11 hydrocarbon group and R2 is a C1-30 hydrocarbon group). The present invention can provide a semiconductor nanoparticle complex that keeps high fluorescence quantum yield before and after purification.

The invention provides asphalt-based hard carbon microspheres, a preparation method thereof and a sodium ion battery. The preparation method comprises the following steps: S1, stirring asphalt and basic zinc carbonate microspheres in a solvent for reaction to obtain an asphalt-based carbon microsphere precursor; s2, mixing the asphalt-based carbon microsphere precursor with a metal salt modifier to obtain a modified asphalt-based carbon microsphere precursor; the metal salt modifier is zinc salt, magnesium salt or calcium salt; s3, annealing and carbonizing the modified asphalt-based carbon microsphere precursor; and S4, carrying out acid pickling, water washing and drying treatment on the carbonized product to obtain the asphalt-based hard carbon microspheres. Through the combined action of a template method and the metal salt modifier, the pore structure and morphology of the hard carbon material are improved, so that the hard carbon material has high specific surface area and rich pore structures, and the obtained hard carbon material has excellent performance, high discharge capacity and high initial charge-discharge efficiency.

The invention discloses a high-capacity lithium iron phosphate positive electrode material and a preparation method thereof, and belongs to the technical field of lithium ion batteries, the lithium iron phosphate positive electrode material is compounded with a perovskite structure ion conductor; the structural formula of the perovskite structure ion conductor is AxB1-xO2-delta, and x is more than or equal to 0.2 and less than or equal to 0.8; wherein A is a rare earth element, and the rare earth element is any one of lanthanum, cerium, praseodymium, neodymium, samarium and gadolinium; b is a transition metal element, and the transition metal element is any one of chromium, manganese, iron, cobalt, nickel, copper and zinc. The perovskite structure ion conductor can provide more moving space for lithium ions, the lithium ion diffusion rate and capacity of the positive electrode material can be improved due to the high ion conductivity and lithium ion storage capacity of the perovskite structure ion conductor, the rare earth atoms can provide an additional migration channel for the lithium ions, the transition metal atoms can provide an additional electron conduction path, and the lithium ion diffusion rate and capacity of the positive electrode material can be improved. Therefore, the transmission rates of lithium ions and free electrons are matched, and the cycle performance is improved.

Provided is a semiconductor nanoparticle complex in which a ligand is coordinated to a surface of a semiconductor nanoparticle. The semiconductor nanoparticle includes In and P, the ligand includes a mercapto fatty acid ester represented by the following general formula, and the mercapto fatty acid ester has an SP value of 9.30 or less. General formula: HS—R1—COOR2 (where R1 is a C1-11 hydrocarbon group and R2 is a C1-30 hydrocarbon group). The present invention can provide a semiconductor nanoparticle complex that keeps high fluorescence quantum yield before and after purification.

The invention discloses a magnetoplumbite type oxide and a preparation method and application thereof, and the preparation method comprises the following steps: S1, dissolving rare earth nitrate, transition metal nitrate and Al (NO3) 3 in deionized water to obtain a mixed nitrate solution; s2, adding citric acid monohydrate into the mixed nitrate solution, heating and stirring, and evaporating to obtain transparent gel; s3, the gel is dried, and loose and porous dry gel is obtained; s4, carrying out first high-temperature treatment on the xerogel in an air atmosphere under the condition of 650-950 DEG C to prepare a precursor; and S5, grinding and pulverizing the precursor, grinding and uniformly mixing the precursor and the soluble salt, and carrying out secondary high-temperature treatment in the air atmosphere at 1500-2000 DEG C to prepare the magnetoplumbite type oxide. The preparation method is low in cost, simple and easy to implement and wide in application range, and when the prepared magnetoplumbite type oxide is applied to a lithium-sulfur battery, the performance of the battery can be improved.

The invention discloses a wide-spectrum electromagnetic wave modulation method based on silver-based chalcogenide, and belongs to the technical field of electromagnetic wave modulation. According to the invention, the abrupt-change modulation of 1GHz-300THz wide-spectrum electromagnetic waves is realized based on the electronic phase change characteristic of the metal insulator under the triggering of the silver-based chalcogenide under the characteristic external field, and the resonant structure design is combined, so that the functions and applications of electromagnetic wave switching, electromagnetic wave intelligent shielding, dynamic information communication encryption, multi-spectrum camouflage and passive electromagnetic wave protection are realized. The main conception is that a silver-based chalcogenide material with an electronic phase change characteristic is introduced as a sensitive medium, and mutation of electromagnetic wave optical characteristics covering microwave, terahertz and infrared frequency bands caused by electronic phase change of the silver-based chalcogenide is triggered by utilizing characteristic temperature, characteristic pressure and characteristic current. According to the invention, the technical barrier of wide spectrum response and multi-mode dynamic modulation is broken through, and the modulation effect can be cooperatively regulated and controlled by the components of the silver-based chalcogenide material and the structure of the resonant array.

Provided is an all-solid-state lithium batteries (ASSLBs), Li-based cathode materials and structures incorporated therein and to methods of producing said materials, structures and batteries.

A quantum dot, a quantum dot-polymer composite, and an electronic device including the same. The quantum dot includes a core including a first semiconductor nanocrystal; a first shell including a second semiconductor nanocrystal including a Group III-VI compound on the core; and a second shell including a third semiconductor nanocrystal having a composition different from that of the second semiconductor nanocrystal on the first shell; wherein one of the first semiconductor nanocrystal and the third semiconductor nanocrystal includes a Group III-V compound.

The present invention provides an ion-conducting solid containing an oxide characterized by the general formula Li 6+a-c-2d Y 1-a-b-c-d M1 a M2 b M3 c M4 d B3O9 is represented. (In the formula, M1 represents at least one metallic element selected from a group consisting of Mg, Mn, Zn, Ni, Ca, Sr, and Ba; M2 represents at least one metallic element selected from a group consisting of La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, In, and Fe; M3 represents at least one metallic element selected from a group consisting of Hf, Sn, and Ti; M4 represents at least one metallic element selected from a group consisting of Nb and Ta; and a, b, c, and d represent real numbers, each within certain ranges, while satisfying 0.010 ≤ a + b + c + d < 1.000.)

Application methods of a nano layered double include: applying the nano layered double hydroxide in promoting chondrogenic differentiation of human umbilical cord-derived mesenchymal stem cells, and applying the nano layered double hydroxide in preparing drugs for promoting cartilage regeneration, promoting intervertebral disc repair, or treating intervertebral disc degeneration. Compared to human umbilical cord-derived mesenchymal stem cells without an addition of the nano layered double hydroxide, the human umbilical cord-derived mesenchymal stem cells with the addition of the nano layered double hydroxide have a better and faster ability to differentiate into chondrocytes and broad application prospects.

The application discloses a sea urchin-shaped antibacterial piezoelectric copper-zinc oxide and a preparation method and application thereof, and belongs to the field of biological medical materials. The preparation of the copper-zinc oxide comprises the following steps: (1) weighing Cu 2+ and Zn 2+ containing compound raw materials, dissolving the raw materials in deionized water, and preparing a mixed solution after dispersion; (2) adding the mixed solution obtained in the step (1) into deionized water containing DMSO, stirring and uniformly mixing, and preparing a solution containing Cu 2+ and Zn 2+ ; (3) adding an alkali source into the solution obtained in the step (2), heating and reacting, centrifugally collecting a precipitate, and obtaining the copper-zinc oxide after washing. The copper-zinc particles are subjected to thermal hydrolysis under the action of the organic solvent DMSO under an alkaline condition, and the copper-zinc oxide with a sea urchin-shaped structure is generated; and the oxide exhibits excellent piezoelectric antibacterial performance under stirring at room temperature.

Provided are a metal element-doped metal oxide dispersion liquid and a method for producing the same, the metal element-doped metal oxide dispersion liquid being excellent in dispersibility of the metal element-doped metal oxide particles, and it being possible to satisfy characteristics (flatness, defect amount, PL intensity of quantum dots when laminated as an ETL on a quantum dot layer, charge transport properties, etc.)　The metal element-doped metal oxide dispersion liquid includes metal element-doped metal oxide particles and a solvent as a dispersion medium, and has a metal cation content calculated from Li, Na, K, and Ca included in the solvent of 1 to 2700 ppm, the metal oxide particles being particles having zinc oxide as a main component, the metal element doped into the particles having zinc oxide as a main component including one or more elements selected from Al, Mg, Li, Ca, Ga, and In, and the doped metal element being included in a ratio of 2-20 mol% with respect to elemental zinc.

The invention belongs to the technical field of new materials and electronic information, and particularly relates to a transition metal doped ZnIn2S4 gas sensor as well as a preparation method and application thereof. The gas sensor comprises a substrate and a transition metal doped ZnIn2S4 nano array growing on the surface of the substrate in situ, the nano array is composed of a plurality of two-dimensional nano sheet layers, the two-dimensional nano sheet layers are arranged in a staggered stacking mode and extend at an included angle of + / -5 degrees relative to the normal direction of the surface of the substrate, and the transition metal doped ZnIn2S4 nano array is arranged on the surface of the substrate. And a network assembly with a three-dimensional flower-shaped topological structure is formed through physical or chemical connection. The preparation method is simple, the energy band structure of the material is effectively regulated and controlled, the forbidden band width is reduced, on the other hand, the specific surface area of the material is remarkably increased, and the pore size distribution is optimized. And the prepared gas sensor shows excellent gas selectivity to triethylamine, is high in response value and high in recovery speed, and is expected to be applied to the fields of environmental monitoring and food safety.

The present application discloses a lithium-supplementing additive, a preparation method therefor, and an application thereof. The lithium-supplementing additive includes a core body and a functional encapsulation layer covering the core body. The core body includes a lithium-supplementing material, and the lithium-supplementing material is a lithium-containing material having a unidirectional capacity, in which lithium ions are deintercalated during a first charge and free from intercalation during a discharge. Based on the lithium-supplementing material having a unidirectional capacity included in the lithium-supplementing additive of the present application, and lithium ions can be effectively deintercalated during the first charge and prevented from being intercalated into the lithium-supplementing material again during the discharge, therefore, the lithium-supplementing effect of the lithium-supplementing additive provided by the present application is ensured, and the initial efficiency and the overall electrochemical performance of a battery containing the lithium-supplementing additive is improved.

Thermally conductive particles contain at least a fired product obtained by firing an aluminum raw material, a zinc raw material, and an additional raw material other than the aluminum raw material and the zinc raw material. A content of the zinc raw material is in a range from 25 parts by mass to 70 parts by mass with respect to 100 parts by mass of the aluminum raw material. The additional raw material contains at least one selected from the group consisting of a boron compound, a tungsten compound, a titanium compound, a bismuth compound, and a fluorine compound, and a content of the additional raw material is in a range from 0.05 parts by mass to 20 parts by mass with respect to 100 parts by mass of the aluminum raw material. The thermally conductive particles satisfy predetermined conditions.

In an aspect, a mixed metal oxide comprises or consists essentially of: a mixture comprises or consisting essentially of 0.30 to 0.69 parts by mole Mg, 0.20 to 0.69 parts by mole Zn, 0.01 to 0.30 parts by mole of a third element selected from Al and Ga, and, either, when the third element is Al, 0.00 to 0.31 parts by mole of other elements selected from metals and metalloids, or, when the third element is Ga, 0.00 to 0.15 parts by mole of other elements selected from metals and metalloids, wherein the sum of all parts by mole of Mg, Zn, the third element, and the other elements amounts to 1.00, wherein the amount in parts by mole of the other elements is lower than the amount in parts by mole of Mg and is lower than the amount in parts by mole of Zn; oxygen; and less than 0.01 parts by mole of non-metallic and non-metalloid impurities.

A metal oxide composition, a light-emitting device produced by using the metal oxide composition, an electronic apparatus including the light-emitting device, and an electronic device including the light-emitting device are disclosed. The metal oxide composition includes a metal oxide nanoparticle, a metal halide, and a solvent, wherein an amount of an organic material on the surface of the metal oxide nanoparticle is in a range of about 12 wt% to about 21 wt% based on the weight (e.g., based on 100 wt%) of the metal oxide nanoparticle, and an amount of the metal halide is greater than 0 wt% but not more than about 7.0 wt% based on the weight (e.g., based on 100 wt%) of the metal oxide nanoparticle.

The present disclosure belongs to the technical fields of nanoscience and fluorescence sensing, and specifically relates to a preparation method of a paper-based sensor for detecting an ammonia gas, and a use of the paper-based sensor. In the present disclosure, Zn(PA)(BPE) is first prepared, and a porous structure on a surface of the Zn(PA)(BPE) is used to adsorb an ammonia gas to improve a reaction sensitivity of the ammonia gas; then a Zn(PA)@CNQD ratiometric fluorescent substance is prepared from Zn(PA)(BPE) and CNQD through embedding, and finally dissolved in ultrapure water (UPW) to obtain a solution; and the solution is added dropwise on a filter paper, and the filter paper is purged with nitrogen, such that the solution is loaded on the filter paper to obtain a ratiometric fluorescent paper-based sensor.

The present invention provides a novel method for producing an ion-exchanged hydrotalcite, the method including no complicated steps, needing no massive equipment, and enabling a hydrotalcite to be ion-exchanged while inhibiting the formation of a by-product, etc.　This method for producing an ion-exchanged hydrotalcite (3) is characterized by comprising a first step, in which a powdery or pasty hydrotalcite (1) is mixed and reacted with an aqueous solution of an acid (2) so that the resultant mixture has a water content in the range of 10-60 mass%, and a second step, in which a reaction product obtained in the first step is dried and pulverized without via a cleaning step.

The invention relates to a ZnAl-LDH-based material as well as a preparation method and application thereof in sludge treatment. The ZnAl-LDH-based material is prepared from a divalent metal salt solution and a trivalent metal salt solution through a coprecipitation method, divalent metal comprises Zn and Cu, and trivalent metal is Al; the molar weight ratio of the divalent metal to the trivalent metal is (1-3): 1, and the ratio of the molar weight of Cu to the total molar weight of the divalent metal is (0-0.5): 1. The ZnAl-LDH-based material is used for promoting the organic sulfide in the sludge to be converted into sulfoxide sulfur and sulfone sulfur. Compared with the prior art, a series of ZnAl-LDH-based materials with proper specific surface areas and pore volume structures are prepared, and low-valence organic sulfides in municipal sludge can be promoted to be directionally converted into sulfoxide sulfur and sulfone sulfur; the method has a wide application prospect in the field of improving the high-added-value utilization of organic sulfide-containing wastes such as municipal sludge.

To coat a ZnO surface with a safe and stable oxide.SOLUTION: A coated particle of the present invention includes ZnO of which at least a part is covered with ZnMOx (M is a metal element capable of constituting a composite metal oxide together with Zn). The coated particle is obtained by hydrothermal treatment of ZnO in the presence of a hydroxide of a metal capable of constituting a composite metal oxide together with Zn. The coated particle is suitable for an ultraviolet shielding agent, a cosmetic containing the same, and a paint having an ultraviolet shielding function, a gas permeation suppression function, or the like.SELECTED DRAWING: Figure 5

The invention provides a halide electrolyte material and a preparation method thereof, a positive plate, a secondary battery, a battery assembly and electric equipment. The halide electrolyte material is doped with a fluorine element and a zinc element. The halide electrolyte material provided by the invention has good ionic conductivity and air stability.

One aspect of the present disclosure provides an ion conductive substance which contains an alkali metal element, a divalent metal element D, a trivalent or higher-valent metal element M, and a halogen element, and has a cubic crystal structure, wherein in the X-ray diffraction chart obtained by measurement using CuKα rays at 25°C, the ratio of the peak height of the diffraction peak A to the peak height of the diffraction peak B is 0.80-2.50, where the diffraction peak B is the diffraction peak that has a maximum peak height observed within the 2θ angle range of 45-53°, and the diffraction peak A is the diffraction peak that has a maximum peak height observed within the 2θ angle range of 33-38°.

A method of preparing an alkaline cellulose concentrate is disclosed. The method may include providing a cellulosic material and a cold alkaline solution, and dispersing and dissolving the cellulosic material in the cold alkaline solution to obtain an alkaline cellulose concentrate. Providing the cold alkaline solution may include generating an alkaline solution by electrodialysis, thereby reducing or preventing absorption and / or dissolution of CO2 in the cold alkaline solution, and / or reducing the concentration of carbonate ions in the cold alkaline solution.

A material is provided comprising a Zn-(methyl triazolate)-(oxalate) metal-organic framework (MOF) having a chemical formula of Zn(3-methyl-1H-1,2,4-triazolate)(oxalate)0.5 (Zn(mtz)(ox)0.5) and comprising oxalate groups forming oxalate layers and (mtz)Zn2(mtz) groups forming (mtz)Zn2(mtz) layers. In some embodiments, oxalate groups of adjacent oxalate layers are parallel, wherein each methyl group of each (mtz)Zn2(mtz) group is oriented in opposing directions, and wherein adjacent methyl groups of adjacent (mtz)Zn2(mtz) groups and on a same side of planes defined by the oxalate groups are oriented in opposing directions. In other embodiments, oxalate groups of adjacent oxalate layers are non-parallel, and wherein each methyl group of each (mtz)Zn2(mtz) group is oriented in the same direction. Methods of using the materials to capture CO2 are also provided. Methods for synthesizing Zn-(methyl triazolate)-(oxalate) MOFs are also provided.

The solid electrolyte material of the present disclosure consists of Li, M1, M2, and X, wherein M1 is at least two selected from the group consisting of Ca, Mg, and Zn; M2 is at least one selected from the group consisting of Y, Gd, and Sm; and X is at least one selected from the group consisting of F, Cl, Br, and I.

The invention discloses a zinc thiophosphate material with a yolk double-shell structure as well as a preparation method and application thereof, and relates to the technical field of sodium ion batteries. The preparation method comprises the following steps: firstly, preparing a ZIF-8 precursor template through a zinc source and solvothermal reaction of 2-methylimidazole, and then sequentially carrying out coating, template etching, synchronous carbonization and vulcanization treatment and phosphorus vulcanization treatment on the ZIF-8 precursor template to finally obtain the ZnPS3 / NC-C material with the yolk double-shell structure and excellent electrochemical performance. Compared with a traditional transition metal thiophosphate preparation process, the method is safer in process, and the yolk double-shell morphology of the metal phosphorus sulfide can be accurately regulated and controlled. Compared with pure zinc thiophosphate prepared by a traditional process, the prepared ZnPS3 / NC-C material with the yolk double-shell structure has the characteristics of hollow and porous characteristics, high specific surface area and structural stability, and shows relatively high first charge-discharge efficiency and excellent cycle stability when being used as a sodium-ion battery negative electrode material.

The present invention relates to the technical field of batteries, and provides a negative electrode active material and a preparation method for improving the cycle life of a battery, a negative electrode material and a negative electrode of a zinc-nickel battery, wherein the raw materials of the sulfur-doped carbon-coated calcium zincate crystals include zinc oxide, hydrophilic calcium hydroxide, a carbon source, a sulfur-containing compound and deionized water. The present invention modifies the zinc electrode material, and the negative electrode active material used is a sulfur-doped carbon-coated calcium zincate crystal, which has a much lower solubility in an alkaline electrolyte than zinc oxide, thereby reducing the concentration of zincate in the electrolyte, and effectively inhibiting the dendrite growth of the zinc negative electrode during the battery charging process, thereby effectively improving the performance of the zinc-nickel battery and extending the cycle life of the zinc-nickel battery.