205 results about "Lithium chloride" patented technology

The invention relates to the technical field of polymer photoelectric materials, in particular to a preparation method of a supramolecular gel electrolyte. The method comprises the following steps: esterifying tetraphenylethylene alcohol and methacryloyl chloride to form tetraphenylethylene methacrylate, and performing staged linear heating polymerization on the tetraphenylethylene methacrylate, 3-(methacrylamido) propyl dimethyl 3-thiopropyl ammonium oxide inner salt, acrylic acid, tetraphenylethylene methacrylate and 4-vinylpyridine under the action of ammonium persulfate to obtain a tetraphenylethylene copolymer. And finally, soaking in a lithium chloride aqueous solution to obtain the supramolecular hydrogel electrolyte. The hydrogel obtained by the invention has high mechanical strength and high ionic conductivity, and is suitable for energy storage devices such as flexible supercapacitors and the like.

The invention belongs to the technical field of thermoelectricity, and relates to a preparation method and application of a quasi-solid thermoelectric material capable of realizing humidity stability by means of phase separation regulation, the preparation method comprises the following steps: dissolving a negatively charged hydrophilic monomer, an electrically neutral monomer, a cross-linking agent and a photoinitiator in a solvent to obtain a precursor solution, and carrying out an ultraviolet polymerization reaction to form polyelectrolyte gel; mixing the eutectic solvent with an electrolyte aqueous solution containing redox ion pairs and lithium chloride to obtain a quaternary electrolyte system; and immersing the gel into a quaternary electrolyte system, and fully replacing the internal solution through a diffusion effect to obtain the quasi-solid thermoelectric material with stable humidity. The thermoelectric material has the advantages of excellent Seebeck coefficient, good stability, high mechanical strength, large power density and the like, can supply power to wearable electronic products in an actual humidity fluctuation environment, breaks through the main bottleneck of actual application of quasi-solid ionic thermoelectric materials based on ionized water gel, and is wide in application prospect.

The invention discloses green leaf-imitated porous hydrogel as well as a preparation method and application thereof, and belongs to the technical field of hydrogel materials. The preparation method of the green leaf-imitated porous hydrogel comprises the following steps: mixing polyvinyl alcohol, tannic acid and a composite pigment in a solid state, and grinding to form uniformly dispersed mixed powder; then spraying a glutaraldehyde solution to the mixed powder, carrying out a cross-linking reaction at room temperature, and washing after the reaction to obtain hydrogel; soaking the hydrogel in a lithium chloride solution, and taking out the hydrogel after soaking to obtain the green leaf-imitated hydrogel with the automatic moisture absorption function; the hydrogel has a porous structure, can automatically absorb moisture and simulate a vegetation spectrum in a 400-2500nm wave band at high precision, is suitable for covering the surface of fabric or equipment so as to simulate the spectrum and thermal characteristics of vegetation, and can be widely applied to the field of infrared camouflage.

The invention discloses a low-cost nano porous silicon-carbon composite material based on a solid waste silicon source as well as a preparation method and application thereof. The preparation method comprises the following steps: taking a solid raw material containing silicon dioxide as a silicon source; carrying out wet ball milling on the pretreated raw materials; mixing the ball-milled material with magnesium powder, aluminum chloride and lithium chloride; carrying out heating reduction reaction on the mixed material; sequentially performing hydrochloric acid pickling and hydrofluoric acid pickling on the reduction product, and then washing to be neutral; mixing the washed silicon particles with a carbon precursor containing nitrogen and sulfur, coating by adopting a spray coating method, and then carrying out carbonization treatment; the carbon precursor containing nitrogen and sulfur is composed of asphalt and thiourea; the carbonization temperature is 750-850 DEG C, the carbonization time is 1-2 hours, and the heating procedure comprises a desolventizing section, an asphalt decomposition section and a carbonization section. The preparation method is low in raw material cost, low in energy consumption, environment-friendly and excellent in product comprehensive performance, and has wide application prospects in the fields of power batteries, energy storage, catalysis and the like.

The invention discloses a synthesis method of lithium phosphorus sulfur chloride, and relates to the technical field of preparation of sulfide solid electrolyte for all-solid-state lithium ion batteries, and the scheme is as follows: the synthesis method of lithium phosphorus sulfur chloride comprises the following steps: pretreatment of raw materials: mixing lithium carbonate (Li2CO3), phosphorus pentasulfide (P2S5), lithium chloride (LiCl) and elemental sulfur (S) according to a preset ratio, and then adding a catalyst, grinding and dispersing for a preset time to obtain uniformly dispersed mixed powder; reduction reaction: fully mixing the mixed powder with a reducing agent, heating to a first preset temperature condition, and carrying out reduction reaction to obtain a reduction product; sintering and purifying: heating the reduction product to a second preset temperature, and sintering to form a lithium phosphorus sulfur chloride (Li6PS5Cl) crystal phase to obtain a lithium phosphorus sulfur chloride (Li6PS5Cl) product; the raw material cost can be remarkably reduced, the process safety and economy are optimized, and large-scale industrial preparation of lithium phosphorus sulfur chlorine is realized.

The invention discloses a method for preparing high-purity lithium sulfide based on a solution double decomposition method, and belongs to the technical field of battery materials, and the method comprises the following steps: adding lithium chloride and sodium sulfide into ethanol, mixing, and reacting in the mixing process to generate lithium sulfide; performing solid-liquid separation on the reaction system to obtain a solid product; washing the solid product with tetrahydrofuran and drying; and continuously introducing inert gas into the heat treatment chamber to purge a solid product in the heat treatment chamber, carrying out heat treatment on the solid product under the conditions of 200-300 DEG C and 10-1000 Pa, and removing complex impurities in the solid product to obtain the high-purity lithium sulfide. Compared with the prior art, the method has the advantages that the Li2S.EtOH impurity in the lithium sulfide is removed, the lithium carbonate impurity generated by the reaction of the impurity at high temperature is reduced, and the risk of electrolyte and battery performance is further reduced.

The invention relates to the technical field of drying agents, in particular to a porous composite gel drying agent and a preparation method thereof. Conventional desiccants are difficult to give consideration to both stable chemical properties and high moisture absorption capacity. In order to solve the problems, the porous composite gel drying agent is provided, lithium chloride, calcium chloride and other hygroscopic salts are introduced to serve as additives in a porous polymerization network of the drying agent and are compounded with the polymer network, and the intrinsic moisture absorption capacity of the material is remarkably improved. The moisture absorption capacity of the obtained porous composite gel drying agent is far higher than that of traditional silica gel, the long-acting moisture absorption requirement in the high-humidity environment can be met, and the porous composite gel drying agent is particularly suitable for the high-end fields of precision electronics, new energy batteries, biological agents and the like with strict requirements for humidity control precision.

The invention discloses a method for measuring the purity of lithium hydroxide based on a gravimetric method, which comprises the following steps: weighing a lithium hydroxide sample, mixing with an organic reagent 1 in batches, and heating to obtain a primary reactant; fully mixing the primary reactant with an organic reagent 2, filtering, collecting filtrate, diluting, adjusting the pH value to 6-6.5, and adding diethyl ether for extraction to obtain a lower-layer lithium chloride solution; adding a precipitant into the solution, reacting under a constant-temperature water bath condition, filtering and drying the obtained filter residue to constant weight, and calculating the purity of the lithium hydroxide according to the constant weight. According to the method, carbonate interference is avoided through the selective organic reagent, the content of the lithium hydroxide is directly measured through the gravimetric method, the detection process is simplified, dependence on operators and large equipment is reduced, the method has the advantages of being high in accuracy, good in repeatability, wide in application range and low in detection cost, and rapid and accurate measurement of the purity of the lithium hydroxide can be achieved.

The invention provides an electrolyte composition, an electrochemical in-situ etching method of non-metallic inclusions for heavy rail steel and application of the electrochemical in-situ etching method. The electrolyte composition comprises the following components in parts by weight: 1.6 to 2.3 parts of lithium chloride, 10 to 13.5 parts of acetylacetone, 45 to 84 parts of methanol and 2 to 43 parts of a reagent A, the reagent A is a mixed aqueous solution of ethylenediamine tetraacetic acid and sodium citrate. The lithium chloride, the acetylacetone, the methanol and the reagent A in specific parts are matched for use, the obtained electrolyte composition is used for in-situ electrochemical etching of the heavy rail steel, and three-dimensional in-situ etching of the non-metallic inclusions in the heavy rail steel can be successfully achieved. The in-situ information of the non-metallic inclusions in the hypereutectoid heavy rail steel is reserved, and the three-dimensional morphology of the non-metallic inclusions can be presented more comprehensively.

The invention provides spodumene impurity residue removal lithium extraction equipment and a lithium chloride and magnesium oxide preparation process, and relates to the technical field of solid waste treatment, the spodumene impurity residue removal lithium extraction equipment comprises a water bath extraction box, a first mounting plate, a second mounting plate, a reciprocating mechanism and a stirring mechanism; a first mounting plate and a second mounting plate are respectively mounted at the top of the water bath extraction box, the reciprocating mechanism comprises a motor mounted at the top of the first mounting plate, an output shaft key slot of the motor is connected with a turntable, and a limiting frame is fixedly arranged at the bottom of the first mounting plate. According to the scheme, the reciprocating mechanism is matched with the stirring mechanism to rotate in a reciprocating manner, so that the lithium dissolution and separation rate can be increased, a local dead zone formed by single stirring can be broken through the compound motion of reciprocating rotation and stirring, a lithium-containing filtrate forms a strong turbulence and shear effect in the water bath extraction box, updating of a surface leaching agent can be accelerated, and the extraction efficiency is improved. The diffusion resistance of lithium ions on a solid-liquid interface is reduced, so that the dissolution rate of lithium from a solid state to a solution is remarkably increased, and the overall extraction period is shortened.

The application relates to the technical field of high polymer materials, in particular to ammonia-removing and humidity-controlling water gel as well as a preparation method and application thereof, which comprises the following raw materials: deionized water, AM, MBA, Gly, lithium chloride, 2-hydroxy-2-methyl propiophenone, magnesium chloride or magnesium oxide; the AM and the MBA are added into the deionized water, and polymerization is initiated by 2-hydroxy-2-methyl propiophenone and ultraviolet light to form a polyacrylamide network, so that the novel water gel can stably control humidity and effectively remove ammonia in long-term storage, effectively adsorb ammonia and provide molecular-level water molecules, and the required humidity of a cigar is maintained; secondly, the MBA is added into the water gel to form a more stable and porous three-dimensional crosslinking network, which can not only adjust the moisture absorption / relaxation rate of the water gel, realize humidity buffering, but also adsorb ammonia molecules through acid-base neutralization, ion exchange, hydrogen bonding, electrostatic interaction, so that the water gel can maintain the required humidity of the cigar for a long time and reduce the volatilization of ammonia.

A process for producing lithium hydroxide monohydrate from lithium chloride, the process comprising: (a) adding an aqueous potassium ion and hydroxide ion-containing solution to an aqueous lithium chloride-containing solution, thereby obtaining a mixture comprising lithium hydroxide, potassium chloride and water, (b) selectively precipitating potassium chloride from the mixture, thereby obtaining potassium chloride precipitate and a first mother liquor solution, (c) separating the potassium chloride precipitate from the first mother liquor solution, (d) processing the potassium chloride precipitate to obtain an aqueous potassium hydroxide-containing solution, (e) adding the aqueous potassium hydroxide-containing solution to the separated first mother liquor solution, thereby obtaining a potassium hydroxide-enriched first mother liquor solution, and (f) selectively precipitating lithium hydroxide monohydrate from the potassium hydroxide-enriched first mother liquor solution, thereby obtaining lithium hydroxide monohydrate precipitate and a second mother liquor solution.

The invention relates to polyvinyl alcohol polynitrogen isoacrylamide cellulose hydrogel with an anisotropic structure as well as a preparation method and application of the polyvinyl alcohol polynitrogen isoacrylamide cellulose hydrogel, and belongs to the technical field of water catching materials. The preparation method of the hydrogel comprises the following steps: S1, adding polyvinyl alcohol, glutaraldehyde and lithium chloride into deionized water to obtain a mixed solution A; s2, adding the cellulose nanocrystal powder into deionized water to obtain a cellulose nanocrystal dispersion liquid; s3, adding N-isoacrylamide and N, N-methylene bisacrylamide into deionized water, so as to obtain a mixed solution B; s4, adding the mixed solution A and the cellulose nanocrystal dispersion solution into the mixed solution B, and reacting to obtain a mixed solution C; s5, ammonium persulfate, hydrochloric acid and tetramethylethylenediamine are added into the mixed solution C, freezing, low-temperature crosslinking and unfreezing are conducted, and then freezing-unfreezing circulation crosslinking is conducted; and finally, taking out, unfreezing and dialyzing. The hydrogel provided by the invention has a highly anisotropic structure and regular vertical pore channels.

A method for preparing high-purity lithium sulfide by using industrial-grade butyllithium includes the following steps: step A: under an inert gas condition, thoroughly mixing 1.5-2.5 g of lithium chloride, 0.5 L of an industrial-grade n-butyllithium solution (2.5 mol / L) and 1.5-2.5 L of n-hexane to obtain a mixed solution, and charging the mixed solution into a sealed container; step B: under the sealed condition, firstly introducing H2S gas into a gas-washing bottle through a submerged pipe at a rate of 10.5 L / h, then introducing into the mixed solution through the submerged pipe, controlling the reaction temperature at 25-40° C., and continuously stirring for reaction for 4-6 h to obtain a reaction slurry; and step C: under an inert gas condition, filtering the reaction slurry with a G3 sand core funnel to obtain a crude lithium sulfide solid wet material.

The invention provides a diaphragm as well as a preparation method and application thereof, and relates to the technical field of lithium ion batteries. The preparation method of the diaphragm comprises the following steps: S1, mixing a diamine monomer and a dianhydride monomer according to a molar ratio of 0.9-1.1, adding an organic solvent, uniformly mixing, and reacting to obtain a polyamide acid solution; wherein the mass ratio of the diamine monomer to the organic solvent is (10-30): 100; s2, lithium chloride and lithium titanium aluminum phosphate are sequentially added into the polyamide acid solution and mixed to be uniform, a spinning solution is obtained, and the mass ratio of lithium chloride to lithium titanium aluminum phosphate to the polyamide acid solution is (0.5-3): (15-45): 100; s3, performing electrostatic spinning on the spinning solution to obtain an electrostatic spinning membrane; and S4, carrying out imidization treatment on the electrostatic spinning membrane to obtain the diaphragm. The diaphragm provided by the invention has excellent heat resistance, and is helpful for improving the cycle stability of the battery.

The application discloses an interface control liquid for prelithiation electrodes, a preparation method and application, and the interface control liquid comprises a solvent and a metal salt; the solvent comprises one or more of an ether solvent, an ester solvent, a ketone solvent, a hydrocarbon solvent, a nitrile solvent or deionized water; the metal salt comprises one or more of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium hexafluoroarsenate, lithium bisoxalate borate, lithium bisfluorosulfonimide, lithium bistrifluoromethylsulfonimide, lithium perchlorate, lithium fluoride and lithium chloride; the concentration of the metal salt is 0.001 g / mL-10 g / mL; the prelithiation electrode is obtained by supplementing lithium to an electrode by a chemical prelithiation solution; the interface control liquid is used for modifying the prelithiation electrode, the metal salt of the interface control liquid reacts with the chemical prelithiation solution remaining on the surface of the prelithiation electrode, and a solid electrolyte layer containing inorganic lithium salt is generated on the surface of the prelithiation electrode; wherein, the content of the inorganic lithium salt is between 5% and 90%.

This invention provides a high-performance, high-precision gradient pore ultrafiltration membrane and its preparation method, belonging to the field of membrane preparation technology. Lithium chloride can alter the thermodynamic properties of the casting solution, affecting the aggregation state of polymer molecules and the phase separation process. CTAB has multiple functions in the phase inversion membrane preparation process; as a non-solvent additive, it regulates the phase separation behavior of the polymer PVDF, promoting the formation of more uniform nanoscale channels. DOP has a unique molecular structure and physicochemical properties, playing a multifaceted role in improving membrane performance; by inserting itself between PVDF molecular chains, it weakens the intermolecular forces, making the molecular chains more loosely arranged, thereby forming more interconnected channels and increasing flux. Simultaneously, it helps to form a narrow pore size distribution, reducing macropore defects and improving retention accuracy. This invention, through the mixing of the above substances, effectively achieves a high-porosity, nanoscale pore structure, realizing a high-performance, high-precision gradient pore ultrafiltration membrane preparation method.

The invention relates to hydrometallurgy of rare metals, in particular, to lithium sorption recovery from natural brines and wastewaters. The method comprises introducing a feed lithium-containing brine to a sorption-desorption concentrating module in a form of a vertical column filled with an inorganic sorbent being a chlorine-containing lithium aluminum double hydroxide. After sorption, the lithium saturated sorbent is washed with 27% ammonium chloride solution in the amount of 80-150% of the sorbent volume in the column and flowing through the column in the direction reverse to the direction of the feed brine flow. Then lithium desorption from the sorbent is performed with desalinated water to obtain a lithium enriched solution containing ammonium chloride impurities, which is then evaporated followed by ammonium chloride sublimation from the dry mixture. The effect of the invention is the reduced lithium losses with the washing solution and increased purity of the target product (LiCl concentrate).

The invention relates to methods and apparatus for controlling water balance during lithium chloride brine electrolysis. A method is provided comprising supplying the anolyte product stream from electrolysis to a flash evaporator without mixing it with any other liquid stream between exiting the electrolyser and entering the flash evaporator, concentrating it by vacuum evaporation and recirculating the concentrated anolyte product to the electrolyser. A method is also provided comprising the use of forward osmosis prior to electrolysis in order to adjust the concentration of the initial feed brine such that it can be purified by ion exchange and then concentrated for electrolysis, in a manner that means that the entire feed brine can be prepared for electrolysis using forward osmosis, which requires very little energy input. Apparatus for performing the above processes is also provided.

The invention is applicable to the technical field of energy conversion, and provides a multifunctional flexible ionic gel generator and a preparation method thereof, and the multifunctional flexible ionic gel generator comprises an upper layer carbon electrode, a flexible ionic gel layer and a lower layer carbon electrode which are sequentially connected from top to bottom. The preparation method of the flexible ionic gel layer comprises the following steps: mixing a matrix material, a thermoelectric response material, a moisture absorption material and deionized water, carrying out a cross-linking reaction, and standing in a mold to obtain the flexible ionic gel layer. Lithium chloride, sodium polystyrenesulfonate and other materials are introduced into an acrylamide and carboxymethyl cellulose hydrogel matrix, simple crosslinking is performed to form flexible ionic gel, and meanwhile low-grade heat energy and moisture energy are collected and converted into electric energy. On the basis of cooperation of thermoelectricity and moisture power generation, collection of chemical energy and response to pressure are completed, and multiple functions are achieved.

This invention discloses a method for preparing nano-aluminum-based lithium materials and adsorbents using laminar plasma beams, belonging to the field of lithium-ion adsorption technology. This invention provides a simple, relatively mild, and highly repeatable method for preparing nano-aluminum-based lithium materials and adsorbents using plasma beams. In this invention, aluminum hydroxide and lithium chloride are mixed in a molar ratio of 2:1 to 1.3, and then evaporated and condensed by a plasma beam in a sealed space protected by an inert gas to obtain nano-aluminum-based lithium materials. These materials are then granulated with resin to obtain the adsorbent. This invention uses the controllable laminar arc heat generated by the plasma beam as a heat source, achieving physical high-temperature vaporization and simultaneous rapid condensation to form Al(OH)₂. 3 The nanomaterials with uniformly distributed LiCl molecules maximize the specific surface area of ​​the aluminum-based lithium adsorbent, resulting in superior adsorption capacity. This invention is produced in a fully enclosed manner under normal pressure, offering advantages such as safety, zero emissions, energy saving, environmental protection, short process, and continuous, efficient, and stable preparation.

The invention relates to the technical field of organic synthesis, in particular to a method for continuously producing canagliflozin by using a microchannel reactor. The production method comprises the following steps: reacting M1 and isopropyl magnesium chloride lithium chloride in a microreactor 1 to form an intermediate I; the reaction temperature is-10 DEG C to 10 DEG C; the reaction time is 15 to 45 seconds; reacting the intermediate I with the M2 in a microreactor 2 to form an intermediate II; the reaction time is 20 to 60 seconds; reacting the intermediate II, methanesulfonic acid and C1-C3 alcoholic solution in a microreactor 3 to form an intermediate III; the reaction time is 20 to 60 seconds; and reacting the intermediate III, triethyl silane and boron trifluoride diethyl etherate in a microreactor 4 for 5-10 seconds. The method solves the problems that the micro-channel reactor is easy to block and the product purity is not high.

The application relates to the technical field of battery material and resource recycling, and provides a process for preparing lithium-sulfur electrolyte raw materials based on waste salt, which comprises the following steps: taking industrial waste salt as a sulfur source, taking lithium-rich waste residue as a lithium source, taking waste carbon as a reducing agent, uniformly mixing the three with a binder, granulating, further calcining to obtain a mixture, mixing the obtained mixture with a solvent A, ball milling, solid-liquid separation, obtaining a liquid phase containing sulfides, subjecting the obtained solid phase to acid immersion treatment and condensation to obtain silicon tetrachloride, mixing and dissolving the liquid phase containing sulfides and lithium chloride, carrying out solid-liquid separation to obtain a solution containing lithium chloride and lithium sulfide, reducing and concentrating the solution containing lithium chloride and lithium sulfide to obtain a mixed product of lithium chloride and lithium sulfide, and further adjusting the proportion to obtain lithium-sulfur electrolyte raw materials. The application realizes the resource utilization of industrial waste salt and lithium-rich waste residue, reduces the preparation cost of lithium-sulfur electrolyte raw materials, simultaneously produces high-value silicon tetrachloride as a byproduct, and reduces waste emission.

The invention discloses a photo-thermal regenerative carbon nanocage confinement lithium chloride low-temperature energy storage composite material, and preparation and application thereof, and belongs to the technical field of energy storage materials. The composite material takes a carbon nanocage with a micropore-mesopore-macropore hierarchical structure as a carrier, lithium chloride is loaded in a nano cavity and a pore channel of the carbon nanocage in a limited range to form a stable composite structure, and the problems of leakage and agglomeration of lithium chloride can be effectively inhibited; during preparation, the carbon nanocage is prepared through a chemical vapor deposition method, and the carbon nanocage can be obtained through drying, vacuum impregnation, suction filtration and freeze-drying shaping, the process is simple and controllable, and the graded pore mass transfer advantage of the carbon nanocage can be reserved; the composite material can stably work under the environment with the temperature of 20-40 DEG C and the relative humidity of 30%-60%, and the fit lt is achieved; the device can capture, store and release 100 DEG C low-grade heat energy, can be directly driven by solar energy to dehydrate and regenerate, has the advantages of high cycle stability and green regeneration, is suitable for adsorption type heat storage, solar photo-thermal energy storage and industrial waste heat recovery devices, and has remarkable industrial application value.

The invention provides a method for synergistically extracting lithium and aluminum from clay type lithium ore. According to the method, sodium carbonate and limestone synergistic roasting is combined with sodium hydroxide leaching, CO2 precipitation is regulated and controlled through a magnetic field, and then lithium and aluminum are integrally recycled through an ammonium chloride roasting method, so that the industrial feasible process with the high recovery rate, the high Li / Al ratio, low energy consumption and comprehensive resource utilization is expected to be achieved, and the industrial problem of efficient separation of lithium and aluminum in clay lithium ore is solved. The mineral structure is activated through collaborative roasting of sodium carbonate and limestone; then a magnetic field is applied to the sodium hydroxide leaching solution, carbon dioxide is introduced, the precipitation behaviors of lithium and aluminum are selectively regulated and controlled through the magnetic field, and the lithium-aluminum ratio in the coprecipitate is remarkably increased; and finally, by means of ammonium chloride roasting, gas phase-solid phase separation that lithium is fixed in the form of lithium chloride and aluminum escapes in the form of volatile aluminum chloride is realized, so that lithium and aluminum products with high recovery rate are synchronously obtained, and resource utilization of waste residues is realized.

This invention relates to an air-to-water system and its absorbent gel. The preparation method of the absorbent gel includes: dispersing carboxymethyl cellulose in deionized water until a transparent solution is formed; adding copper oxide nanoparticles to the transparent solution and ultrasonically dispersing them uniformly to obtain a CuO / CMC pretreatment solution; adding hydroxypropyl methylcellulose to the CuO / CMC pretreatment solution and stirring until fully swollen to form a precursor solution; adding lithium chloride to the precursor solution and stirring until fully foamed to obtain a foam gel; and finally drying the foam gel to obtain the absorbent gel. The absorbent gel of this invention has low preparation cost, can rapidly and efficiently absorb / desorb moisture, and can be assembled into an independent passive water production system, thus adapting to a wider range of applications in arid regions.

The invention provides a solid electrolyte, a preparation method thereof and a lithium battery. The preparation method of the solid electrolyte comprises the following steps: providing raw materials including lithium chloride, indium chloride, yttrium chloride and lithium fluoride according to a stoichiometric ratio of Li3In1-mYmCl6-nFn, m being 0.05-0.4 and n being 0.15-0.45; grinding the lithium chloride, the indium chloride, the yttrium chloride and the lithium fluoride to prepare a precursor; and carrying out primary sintering at the temperature of 120-200 DEG C, and carrying out secondary sintering at the temperature of 240-280 DEG C. The positive ion-negative ion double-site cooperation strategy aims at breaking through the performance bottleneck of traditional doping, and the solid electrolyte has high ionic conductivity, wide voltage stability, low interface impedance and long cycle life at the same time.

The invention belongs to the technical field of organic polymer composite materials and flexible electronics, and relates to organic polymer composite biological polysaccharide conductive hydrogel as well as a preparation method and application thereof. The preparation method of the organic polymer composite biological polysaccharide conductive hydrogel provided by the invention comprises the following steps: sequentially adding acrylamide, xanthan gum, K-carrageenan, N-N, methylene bisacrylamide and lithium chloride into deionized water, uniformly stirring, introducing nitrogen to remove oxygen, adding ammonium persulfate, centrifuging to remove bubbles, and drying to obtain the organic polymer composite biological polysaccharide conductive hydrogel. Preheating to a reaction temperature, and initiating a free radical polymerization reaction to obtain the organic polymer composite biological polysaccharide conductive hydrogel. The bottleneck of the mechanical property of the material is broken through, so that the prepared material realizes high toughness (namely, high strength, high stretchability and high fracture energy) and excellent elastic recovery capability.

The invention relates to an aluminum hydroxide-based adsorption material, a preparation method thereof and application of the aluminum hydroxide-based adsorption material in selective adsorption of lithium ions, and belongs to the technical field of adsorption materials. The problems that an existing lithium ion adsorption material is complex in preparation process, high in cost, low in adsorption performance, poor in lithium ion selectivity, not suitable for salt lake brine with the high magnesium-lithium ratio and the like, pollutes the environment and is not suitable for the salt lake brine with the high magnesium-lithium ratio are solved. The preparation method comprises the following steps: uniformly mixing an aluminum salt solution and a urea solution at room temperature, magnetically stirring at 30-90 DEG C, standing, filtering and drying to obtain x-UA; then performing lithium ion saturation adsorption on the x-UA in a lithium chloride solution at room temperature, filtering and drying to obtain Li-x-UA; and finally, washing the Li-x-UA with a detergent, filtering and drying to obtain the adsorption material. The adsorption material can realize highly selective extraction of lithium ions in salt lake brine with high magnesium-lithium ratio.

This invention provides a method for preparing phenyl-substituted 2-methyl-1H-indene derivatives via Stille coupling reaction, comprising: reacting brominated 2-methyl-1H-indene, trialkylphenyltin, palladium catalyst, and additives in an organic solvent; and after post-treatment following reaction to obtain the phenyl-substituted 2-methyl-1H-indene derivatives; wherein the trialkylphenyltin is at least one of trimethylphenyltin and tributylphenyltin; the palladium catalyst is at least one of Pd(PPh3)4, Pd2(dba)3, and Pd(dba)2; the additive is at least one of lithium chloride, cesium fluoride, and potassium fluoride; and the organic solvent is at least one of DMF, 1,4-dioxane, and NMP. This invention uses brominated 2-methyl-1H-indene and trialkylphenyltin as raw materials, and prepares the target product by reaction in an organic solvent in the presence of a palladium catalyst and additives. It exhibits good substrate adaptability and is simple to operate.