26 results about "Lithium acetate" patented technology

The invention relates to the technical field of metal material hot working, and discloses a hot-rolled coiled plate production process which comprises the following steps: preparing a reaction type protective agent, the high-temperature-resistant coating is prepared from the following raw materials in parts by weight: 20 to 40 parts of tetraethoxysilane, 5 to 15 parts of triethyl phosphate, 1 to 5 parts of triethyl borate, 0.5 to 2.0 parts of cerous nitrate (III) hexahydrate, 0.1 to 1.0 part of lithium acetate and 0.01 to 0.05 part of vanadyl acetylacetonate (IV). Coating the surface of a hot-rolled plate blank with the protective agent; the coated plate blank is heated in a heating furnace, so that the protective agent forms a molten-state protective layer in situ; carrying out hot rolling on the plate blank with the molten protective layer; and cooling and coiling the hot-rolled steel strip. In the whole heating and hot rolling process, the molten protective layer isolates the contact between the steel and the oxidizing atmosphere, so that the generation of oxide scales is fundamentally inhibited, the production process is simplified, and the metal yield is increased.

The invention discloses a preparation method for synthesizing a lithium battery positive electrode material by a solvent-free solid-phase method, particularly relates to the technical field of electrochemistry, and relates to the preparation method for synthesizing the lithium battery positive electrode material by the solvent-free solid-phase method. The lithium battery positive electrode material synthesized by the solvent-free solid-phase method is prepared from lithium acetate, nickel cobaltate, manganese cobaltate and a composite functional agent; the preparation raw materials of the lithium battery positive electrode material synthesized by the solvent-free solid phase method comprise the following components in parts by mass: 100 parts of lithium acetate, 74.3-97.2 parts of nickel cobaltate, 4.0-18.5 parts of manganese cobaltate and 6.8-14.6 parts of a composite functional agent, by adopting lithium acetate as a clean lithium source and combining with a solvent-free solid-phase synthesis method assisted by a composite functional agent, organic solvent pollution and harmful gas emission are eliminated from the source, and the lithium acetate is decomposed at a low temperature without solid residues by utilizing the characteristic of lithium acetate without solid residues and cooperating with a reducing atmosphere generated by decomposition of organic components in the functional agent, so that the lithium-ion battery cathode material is obtained. And the problem of pollution caused by high-temperature decomposition of the lithium salt in the traditional process is effectively avoided.

This invention discloses a process for preparing ultrafine glass powder using a spray pyrolysis method in the field of glass encapsulation materials. The process first prepares a homogeneous solution A using boric acid, aluminum nitrate nonahydrate, alkaline earth metal nitrates, lithium acetate, sodium acetate, and potassium acetate. Tetraethyl orthosilicate is dissolved in anhydrous ethanol to obtain solution B. A rare earth transition metal composite oxide nanoclusters encapsulated with a silica shell hybrid inorganic modifier is dispersed in anhydrous ethanol to obtain suspension C. Solution B and suspension C are mixed, and deionized water and hydrochloric acid are added to adjust the pH. After pre-hydrolysis and cooling, triethyl borate is added dropwise for co-condensation, and then mixed with solution A. After adjusting the pH and aging, the mixture is ultrasonically atomized and spray pyrolyzed to obtain ultrafine glass powder. The glass powder obtained by this invention has small particle size, high sphericity, and can be continuously produced.

The invention discloses a low-temperature early-strength low-viscosity liquid accelerator and a compound production process thereof, and relates to the technical field of concrete admixtures. The accelerator is formed by compounding a basic framework component, a rheological stabilizing component and a low-temperature early strength component. The basic framework component comprises an inorganic aluminum salt coagulant, anhydrous magnesium sulfate, diethanol amine and water; the rheological stabilizing component comprises liquid polyaluminum sulfate, an amphoteric inner salt viscosity reducer and cationic nano silicon dioxide sol; the low-temperature early-strength component comprises water-soluble organic aluminum salt, zirconyl sulfate, lithium acetate and water. The amphoteric inner salt viscosity reducer is matched with the cationic nano silicon dioxide sol, so that the rheological stability of the accelerator under a low-temperature condition is improved; through cooperation of the water-soluble organic aluminum salt, the zirconyl sulfate and the lithium acetate, the early strength development capability of the accelerator under a low-temperature condition is improved.

This invention discloses a low-temperature early-strength, low-viscosity liquid accelerator and its compounding and production process, relating to the field of concrete admixture technology. The accelerator is compounded from a basic skeleton component, a rheological stabilizing component, and a low-temperature early-strength component. The basic skeleton component includes an inorganic aluminum salt accelerator, anhydrous magnesium sulfate, diethanolamine, and water; the rheological stabilizing component includes liquid polyaluminum sulfate, an amphoteric internal salt viscosity reducer, and cationic nano-silica sol; the low-temperature early-strength component includes water-soluble organic aluminum salt, zirconium oxysulfate, lithium acetate, and water. This invention improves the rheological stability of the accelerator under low-temperature conditions through the combination of the amphoteric internal salt viscosity reducer and the cationic nano-silica sol; and improves the early strength development ability of the accelerator under low-temperature conditions through the combination of the water-soluble organic aluminum salt, zirconium oxysulfate, and lithium acetate.

The invention discloses heat-resistant saccharomyces cerevisiae of a heterozygous human DNA methylation system as well as a construction method and application of the heat-resistant saccharomyces cerevisiae. The construction method comprises the following steps: determining a to-be-knocked-in saccharomyces cerevisiae target gene locus CAN1, and carrying out annular PCR amplification by taking a target sgRNA sequence as a homologous arm and an original gRNA plasmid as a template to obtain a gRNA plasmid; constructing a to-be-knocked-in gene segment, and transferring the constructed gRNA plasmid, the segment 1 and the segment 2 into BY4741-Cas9 saccharomycetes through a saccharomyces cerevisiae lithium acetate conversion method; the CRISPR plasmid is lost by adopting an iteration method to obtain a saccharomyces cerevisiae strain which is integrated into a genome and has DNA methylation modification, and the saccharomyces cerevisiae strain is named as yHL006. The invention constructs a saccharomyces cerevisiae chassis strain capable of stably expressing a DNA methylation system. Any auxotrophic selection marker is not occupied, and the complete amino acid synthesis capability and corresponding gene loci of the yeast are completely reserved. The heat stress resistance phenotype of the DNA methylation strain is verified, and the heat resistance of the yeast can be improved by the introduced DNA methylation system.

The application belongs to the technical field of novel green energy, and particularly discloses a kind of imitated honeycomb hydrogel, moisture power generation device and application, wherein the imitated honeycomb hydrogel is prepared by cross-linking sodium dodecyl benzene sulfonate, lithium acetate and acrylamide monomers at high temperature, the moisture power generation device comprises bottom electrode, imitated honeycomb hydrogel and top electrode from bottom to top.The imitated honeycomb hydrogel can absorb moisture in the environment and transfer ions during the power generation process through the interaction between hydrophilic groups and water molecules, and then absorb the energy generated by the phase change of water molecules to generate electric energy.The moisture power generator has high flexibility and high current density output.The complete imitated honeycomb hydrogel can be repeatedly bent to a large extent without being damaged, and the repeated bending at different angles shows its excellent mechanical strength, and electric energy can be generated at multiple bending angles, with the characteristics of no pollution, clean, sustainable, almost unlimited power generation conditions, etc.

This invention discloses LiMn 0.6 Fe 0.4 This research relates to PO4 / C, its preparation method, and its applications, belonging to the field of electrode material preparation technology. A LiMn... 0.6 Fe 0.4 The preparation method of PO4 / C is as follows: manganese acetate, ferrous sulfate, ammonium dihydrogen phosphate, lithium acetate, and citric acid are dissolved in water to prepare a suspension; the suspension is ball-milled to form a nanoscale dispersion to obtain a ball-milled suspension; the ball-milled suspension is subjected to a hydrothermal reaction to obtain LiMn. 0.6 Fe 0.4 PO4 / C. This invention uses low-cost manganese acetate, ferrous sulfate, ammonium dihydrogen phosphate, lithium acetate, and citric acid as raw materials. When prepared via a hydrothermal method, no surfactants such as PEG are required. The resulting LiMn... 0.6 Fe 0.4 PO4 / C has small particle size, large specific surface area and high stability.

The invention provides an LATP solid electrolyte, a preparation method and application thereof, and a solid-state battery. According to the preparation method of the LATP solid electrolyte, brand new soluble salts including titanyl sulfate, aluminum hydroxide, lithium acetate and ammonium dihydrogen phosphate are firstly and completely dispersed in water and then stably guided into a spray dryer through the characteristic of high dispersity of an aqueous solution, and a uniformly mixed precursor is separated out through continuous dehydration in the spray drying process, so that the LATP solid electrolyte is prepared. And carrying out high-temperature sintering to obtain the LATP electrolyte. The rapid synthesis method of the LATP solid electrolyte can be realized, the sanding time of the precursor can be greatly shortened, and the production cost is reduced.

The invention relates to a stable determination kit for a multi-parameter electrolyte analyzer. The stable determination kit comprises a solution A and a solution B, the solution A is prepared from the following components: 80 to 160 mmol / L of sodium chloride, 2 to 10 mmol / L of potassium chloride, 1 to 10 mmol / L of lithium acetate, 0.1 to 5 mmol / L of magnesium acetate, 0.1 to 4 mmol / L of anhydrous calcium chloride, 10 to 100 mmol / L of anhydrous sodium acetate, 50 to 100 mmol / L of buffer solution, 0.1 to 10 g / L of preservative, 0.1 to 10 g / L of stabilizer and 0.1 to 10 g / L of surfactant. The solution B is prepared from the following components: 10 to 100 mmol / L of sodium chloride, 2 to 10 mmol / L of potassium chloride, 1 to 10 mmol / L of lithium acetate, 0.1 to 5 mmol / L of magnesium acetate, 0.1 to 4 mmol / L of anhydrous calcium chloride, 10 to 100 mmol / L of anhydrous sodium acetate, 50 to 150 mmol / L of buffer solution, 0.1 to 10 g / L of preservative, 0.1 to 10 g / L of stabilizer and 0.1 to 10 g / L of surfactant. The content of K < + >, Na < + >, Cl <->, Ca < 2 + >, Li < + >, Mg < 2 + > and pH in a sample can be tested at the same time, the accuracy, repeatability and recovery rate are not affected when the sample is stored for 24 months at the temperature of 2-37 DEG C, and the raw materials are easy to obtain.

The application belongs to the technical field of electrode materials, and discloses an in-situ preparation method of a lithium iron phosphate-lithium-rich manganese-based dual-phase electrode material, which utilizes melamine, formaldehyde, ammonium polyphosphate and a mixture to prepare in-situ polymerization double-layer coated modified ammonium polyphosphate; after lithium hydroxide monohydrate is dissolved, glacial acetic acid and an aqueous solution of the in-situ polymerization double-layer coated modified ammonium polyphosphate are added and uniformly mixed to obtain a lithium acetate and ammonium polyphosphate mixed suspension; nano lithium-rich manganese-based compound powder and an organic carbon source are sequentially added to the mixed suspension of lithium acetate and ammonium polyphosphate to obtain organic carbon source coated lithium iron phosphate-lithium-rich manganese-based dual-phase precursor powder, and the powder is calcined; after inorganic carbon source and the obtained calcined product are uniformly mixed, a binder is added, and drying and pressing are performed to obtain the lithium iron phosphate-lithium-rich manganese-based dual-phase electrode material. The preparation method is simple, low in cost, high in efficiency, and the prepared lithium iron phosphate-lithium-rich manganese-based dual-phase electrode material has good water resistance.

This invention relates to the field of electrode materials technology, specifically to a method for preparing a manganese-rich precursor for cathode materials. The invention first synthesizes a manganese-nickel bimetallic organic framework using nickel acetate tetrahydrate and manganese acetate tetrahydrate as metal sources and 3,3',5,5'-biphenyltetracarboxylic acid and 2-aminoterephthalic acid as ligands. Then, through the action of a main complexing agent and a co-complexing agent, manganese acetate tetrahydrate, nickel acetate tetrahydrate, cobalt acetate tetrahydrate, and lithium acetate tetrahydrate are deposited on the surface of the manganese-nickel bimetallic organic framework to obtain the manganese-rich precursor for cathode materials. Lithium-ion batteries prepared using this manganese-rich precursor exhibit high coulombic efficiency, excellent cycle stability, and rate performance.

The invention provides a method for regenerating a lithium iron manganese phosphate positive electrode material and application of the lithium iron manganese phosphate positive electrode material. The method comprises the following steps: providing lithium manganese iron phosphate powder to be recycled; mixing the lithium manganese iron phosphate powder, tannic acid and lithium acetate, and carrying out hydrothermal reaction to obtain an intermediate for defect repair; mixing the defect-repaired intermediate, a lithium source, a manganese source, a phosphorus source, a carbon source and a doped metal oxide, and then performing post-treatment to obtain precursor microspheres; and sintering the precursor microspheres to obtain the regenerated lithium iron manganese phosphate positive electrode material. According to a synergistic regeneration mechanism of tannic acid and lithium acetate provided by the invention, accurate removal of surface impurities and in-situ repair of bulk phase lithium vacancies are synchronously realized, so that low-cost and low-energy-consumption regeneration of the waste lithium iron manganese phosphate positive electrode material is completed, and efficient repair of a microstructure is completed; finally, the regenerated lithium manganese iron phosphate positive electrode material with a stable structure and excellent electrochemical performance is obtained.

The application relates to the field of electronic materials, and particularly discloses a low-gradient zinc oxide varistor disc and a preparation method thereof; the low-gradient zinc oxide varistor disc comprises the following raw materials in parts by weight: 88-96 parts of zinc oxide, 1.5-3 parts of diantimony trioxide, 2-5 parts of bismuth trioxide, 0.2-1.8 parts of nickel oxide, 0.1-0.9 parts of cobalt trioxide, 0.1-0.4 parts of manganese oxide, 0.02-0.07 parts of chromium trioxide, 0.15-0.18 parts of lithium acetate, 1.2-1.8 parts of a dispersing agent, 1.8-2.5 parts of a binding agent, 0.12-0.15 parts of aluminum nitrate and 0.001-0.003 parts of silver nitrate; under the synergistic action of the components, the use ratio of the components is adjusted, the potential gradient of the varistor disc is reduced, the large-current resistance of the varistor disc is improved, and the change of the electrical performance after impact is reduced.

A method for constructing a lithium-rich manganese cathode material with an amorphous protective layer and a locally spinel-disordered phase periodically alternating composite structure involves adding lithium acetate, nickel acetate, cobalt acetate, manganese acetate, and citric acid monohydrate complexing agent to deionized water and mixing thoroughly. Then, aminosulfonic acid is added and stirred until homogeneous, yielding a precursor salt solution. The precursor salt solution is then subjected to spray pyrolysis to prepare precursor powder. Finally, the precursor powder is calcined at high temperature in a muffle furnace to obtain modified lithium-rich manganese-based cathode material powder. The advantages are: this method helps reduce side reactions during cycling and improves the efficiency of lithium-rich manganese cathode materials. + Improving the diffusion rate and suppressing harmful phase transitions during cycling can significantly enhance the stability of materials, slow down voltage decay, and improve cycling performance and voltage retention.

The invention relates to the technical field of electrode materials, in particular to a preparation method of a manganese-rich precursor for a positive electrode material. According to the invention, nickel acetate tetrahydrate and manganese acetate tetrahydrate are taken as metal sources, 3, 3 ', 5, 5'-biphenyltetracarboxylic acid and 2-aminoterephthalic acid are taken as ligands, a manganese-nickel bimetal organic framework is synthesized, and the manganese-nickel bimetal organic framework is synthesized under the action of a main complexing agent and an auxiliary complexing agent. And depositing manganese acetate tetrahydrate, nickel acetate tetrahydrate, cobalt acetate tetrahydrate and lithium acetate tetrahydrate on the surface of the manganese-nickel bimetal organic framework to obtain the manganese-rich precursor for the positive electrode material. The lithium ion battery prepared from the manganese-rich precursor has relatively high coulombic efficiency and excellent cycling stability and rate capability.

The application discloses a method for preparing trifluoromethyl and amino substituted 1,2,4-triazole compounds, which comprises the following steps: adding palladium acetate, lithium acetate, trifluoroethyl imine hydrazide and isocyanide into an organic solvent, and stirring at 90-110 o C for 8-16 hours, and after the reaction is completed, post-treatment is performed to obtain the trifluoromethyl and amino substituted 1,2,4-triazole compounds. The preparation method is simple in operation, the starting material is cheap and easy to obtain, the amount of the palladium acetate catalyst is small, the reaction is carried out in an air atmosphere, no anhydrous and anaerobic operation is needed, the reaction can be scaled up to a gram level, and the application of the method is widened.

The application provides a LATP solid electrolyte, a preparation method and application thereof, and a solid-state battery. The preparation method of the LATP solid electrolyte is characterized by using new soluble salts, titanyl sulfate, aluminum hydroxide, lithium acetate and ammonium dihydrogen phosphate, which are completely dispersed in water, and then introduced into a spray dryer through the high dispersibility of the aqueous solution, and continuously dehydrated and precipitated in the spray drying process to obtain a mixed precursor, and then sintered at high temperature to obtain the LATP electrolyte. The application can realize the rapid synthesis of the LATP solid electrolyte, greatly reduce the sanding time of the precursor, and reduce the production cost.

The application belongs to the technical field of lithium-sulfur batteries, and particularly relates to a method for preparing a lithium sulfide-based material by one-step sulfurization of carbon disulfide and application thereof. The method comprises the following steps: S1. adding a lithium salt into a reactor, and heating to 400-800 DEG C under an inert atmosphere; S2. introducing carbon disulfide gas into the reactor and reacting for 2-6 hours to obtain a lithium sulfide-based material; the lithium salt is selected from at least one of lithium carbonate, lithium oxalate, lithium squarate, lithium malonate, lithium acetate, lithium hydroxide, and the like. The preparation process of the application is simple, the cost is low, and the reaction temperature is low.

The application belongs to the technical field of lithium battery products, and particularly relates to a preparation method of lithium bis(trifluoromethanesulfonyl)imide. The preparation method of lithium bis(trifluoromethanesulfonyl)imide comprises the following steps: under anhydrous and oxygen-free conditions, lithium bis(trifluoromethanesulfonyl)imide, triethylamine and toluene are mixed, then trimethylchlorosilane is added dropwise at a temperature of 0-5 DEG C, reaction is carried out at room temperature, after the reaction is completed, a mixed solution is obtained by centrifugation, lithium acetate is continuously added into the mixed solution, reaction is carried out at a temperature of 40-60 DEG C, then heating distillation reaction is carried out under anhydrous and oxygen-free conditions, after the reaction is completed, the obtained solid is separated and refined to obtain pure lithium bis(trifluoromethanesulfonyl)imide. The preparation method of lithium bis(trifluoromethanesulfonyl)imide provided by the application has a simple process route, strong controllability and safety and environmental protection.

The invention belongs to the field of adsorbents, and particularly relates to a high-temperature-resistant titanium lithium ion selective adsorbent optimized through surface modification, which is prepared by the following steps: ball-milling titanium dioxide and lithium acetate in water to prepare a precursor, and calcining and grinding the precursor to obtain matrix particles; carrying out acid pickling on the matrix particles to obtain a primary adsorbent, and pouring the primary adsorbent and a mixed alcohol-water solution into a liquid electric reaction tank for treatment to obtain a surface activated intermediate; and mixing the surface activated intermediate with nickel sulfide, and sintering. The high-temperature-resistant titanium-series lithium ion selective adsorbent optimized through surface modification has a good thermal stable interface, has high lithium adsorption capacity, excellent magnesium-lithium selectivity and strong acid high-temperature structural stability, can still keep good adsorption performance even through repeated and alternate cold and hot impact of high temperature and normal temperature, and has the advantages of high-temperature-resistant performance, high-temperature-resistant performance, high-temperature-resistant performance, high-temperature-resistant performance, high-temperature-resistant performance, high-temperature-resistant performance and the like. The method is especially suitable for lithium extraction of complex systems such as salt lakes, seawater and oil-gas field associated brine.

The application discloses a method for recycling waste ternary positive electrode materials by green and environment-friendly eutectic solvent hydrometallurgy and regenerating high specific capacity lithium-rich materials. The method uses a eutectic solvent synthesized by citric acid and ethylene glycol as a leaching agent, and carries out hydrometallurgical leaching reaction on the pretreated ternary positive electrode active material at 90-100 DEG C. By adding lithium acetate, manganese acetate, cobalt acetate and other acetates, the molar ratio of lithium ions, manganese ions, nickel ions and cobalt ions in the leaching solution is 1.2:0.13:0.13:0.54. Then, a sol-gel method is used to prepare a gel-like substance, which is dried and calcined twice to prepare the regenerated lithium-rich layered oxide positive electrode material. The method does not use strong acid, has no excess wastewater discharge, and has the characteristics of green environmental protection and high recovery rate.

This invention discloses the application of lithium triacetate as a coating additive for cathode materials and its application in cathode materials. In this invention, lithium triacetate is used as a coating additive for cathode materials. On the one hand, triacetate ions can complex with metal ions on the surface of the cathode material, which is beneficial to the formation of the subsequent lithium-ion conductive layer. At the same time, it can also improve the stability of the coating layer and inhibit the peeling off of the coating layer. On the other hand, the use of lithium salt can prevent the direct use of triacetate from corroding the cathode material and damaging the material structure. It can also act as a lithium supplement agent to provide lithium ions to the cathode material, while avoiding the introduction of other metal ions and eliminating the adverse effects of other metal ions on the performance of the cathode material.

This invention provides a method and application for remediating spent lithium iron phosphate materials using chitosan sol, and for lithium-ion batteries. The remediation method includes the following steps: mixing lithium acetate, chitosan, and spent lithium iron phosphate materials, and using a dispersant to improve the dispersibility of chitosan and lithium acetate; forming a chitosan sol-supported system through sol-gelation and protonation; freeze-drying to maintain the porous structure; and then sintering to simultaneously achieve lithium replenishment and conductive network construction. Chitosan functions as both a reducing agent and a carbon source; the amino and hydroxyl groups in its molecular chain can remove Fe from spent lithium iron phosphate. 3+ Reduced to Fe 2+ Simultaneously, a nitrogen-doped carbon layer is formed after pyrolysis. This invention has the advantages of refining grains, greatly improving powder activity and particle distribution uniformity. It also does not require special equipment, has low energy consumption and low carbon emissions, is safe and controllable, and has low cost, greatly simplifying the repair and regeneration process of waste lithium iron phosphate materials.

This invention discloses a reagent for determining choline in serum and its usage method, relating to the field of in vitro diagnostic reagent technology. It comprises the following components: MOPS, polyether F-68, dimethyl sulfoxide, prolin 300, potassium chloride, lithium acetate, calcium acetate, sodium tetraborate, sodium chloride, and choline. This invention provides an electrode filling solution that can be directly used to measure serum choline content using an electrode method. This method requires no sample preparation, has a short detection time, and provides stable and reliable results, avoiding the instability of choline in serum. It is compatible with appropriate equipment for quantitative detection. It solves the problem of inaccurate results due to the easy decomposition of choline during storage and also provides a low-cost method for detecting choline with results equivalent to tandem mass spectrometry.

The invention relates to a method for preparing an F-doped Li2RuO3 positive electrode material through a sol-gel method, and belongs to the technical field of lithium ion battery positive electrode materials. The method comprises the following steps: taking lithium acetate, ruthenium trichloride and ammonium fluoride as raw materials, taking citric acid monohydrate as a chelating agent, taking ethylene glycol as a cross-linking agent, and dissolving in deionized water to prepare a precursor solution; heating and stirring at 70-80 DEG C to form gel; drying to obtain a xerogel precursor; pre-sintering for 4-8 hours at the temperature of 300-400 DEG C in an air atmosphere to remove organic matters; and finally, sintering for 12-24 hours at the high temperature of 900-1000 DEG C in an inert atmosphere or a vacuum environment to obtain a final product. Lattice oxygen evolution and irreversible phase change of Li2RuO3 under high voltage are effectively inhibited through F-ion doping, and the electronic structure and the ionic conductivity of the material are improved, so that the reversible capacity, the rate capability and the cycling stability of the material are remarkably improved. The prepared material is uniform in component and stable in structure, and an effective scheme is provided for solving the problem of capacity fading of the lithium-rich positive electrode material.