111results about "Boron compounds" patented technology

The invention discloses a sulfide solid electrolyte stable in wet air, a preparation method thereof and a battery, and belongs to the technical field of all-solid-state batteries, the sulfide solid electrolyte comprises the following raw materials in parts by weight: 20-100 parts of sulfide solid electrolyte and 1 part of metal halide component, the chemical formula of the sulfide solid electrolyte is Li < 6-x > PS < 5-x > Cl < 1 + x >, 0 < = x < = 0.6, the metal halide component comprises at least one metal halide, the chemical formula of the metal halide is MXn, n is greater than or equal to 2 and less than or equal to 4, M is one of Zr, Al, Zn, Sn, Sb and Bi, and X is one of F, Cl, Br and I. The metal halide and the sulfide solid electrolyte in a specific ratio are mixed, subjected to ball milling and then subjected to annealing treatment, and an in-situ doping coating layer is obtained on the surface of the sulfide solid electrolyte; and under the condition that the ionic conductivity of the sulfide solid electrolyte is slightly influenced, the wet air stability of the sulfide solid electrolyte is effectively improved.

An exemplary embodiment of the present disclosure provides a method for making an electrolyte, comprising: providing a solid polymer electrolyte (SPE); incorporating boron nitride with the SPE to form a composite polymer electrolyte (CPE), wherein the boron nitride is at least one of exfoliated hexagonal boron nitride (ex-BN) or fluorine-fimctionalized hexagonal boron nitride (BN-F).

The invention belongs to the field of battery materials, and particularly relates to a high-adhesion battery diaphragm binder, slurry, a diaphragm and a preparation method of the high-adhesion battery diaphragm binder, and the high-adhesion battery diaphragm binder based on an acrylate copolymer is prepared through a specific reaction. And then, mixing the binder with two inorganic nano materials, namely a lithium-doped aluminum borosilicate nanowire and a sulfo-functionalized lithium zirconate titanate nanosheet, boehmite and / or aluminum oxide and the like, so as to prepare the high-adhesion diaphragm coating slurry. Wherein the nanowires provide mechanical enhancement and chemical crosslinking points, and the nanosheets improve the interface adhesion and the ionic conductivity. And finally, coating the slurry on the surface of a polypropylene diaphragm, and performing multi-stage drying and heat treatment to obtain the composite diaphragm. The diaphragm has extremely high coating bonding strength, excellent electrolyte wettability and good thermal dimensional stability and ionic conductivity, and is particularly suitable for high-energy-density lithium ion batteries and sodium ion batteries.

The invention discloses a topology enhanced three-dimensional porous framework lithium-based metal negative electrode material as well as a preparation method and application thereof, and belongs to the technical field of solid-state lithium batteries. The material comprises a three-dimensional porous conductive skeleton and an electrochemical active lithium-based phase, pores of the three-dimensional porous conductive skeleton are filled with the electrochemical active lithium-based phase, and tight physical and electrochemical contact is formed; the three-dimensional porous conductive framework is provided with a lithium-loving surface; the three-dimensional porous conductive skeleton has a Young modulus greater than 10 GPa; and the electrochemical active lithium-based phase is pure lithium metal or lithium alloy. The three-dimensional skeleton can effectively buffer the volume change of active lithium in the charging and discharging process, inhibit the growth of lithium dendrites, provide rapid lithium ion and electron transmission channels and bear external pressure. The all-solid-state lithium battery adopting the negative electrode material shows excellent cycling stability, high critical current density, high rate performance and nearly zero macroscopic volume change, and the comprehensive electrochemical performance and safety of the all-solid-state lithium battery are remarkably improved.

The application provides a lithium iron phosphate borate positive electrode material, a preparation method thereof, a positive electrode sheet and a secondary battery, and belongs to the technical field of battery positive electrode materials. x FeTi y P z B w O (4z+3w+2y) / C, wherein x, y, z and w are non-zero positive numbers, 1.02<=x<=1.05, 0.01<=y<=0.05, 0.92<=z<=0.95, and 0.05<=w<=0.15, and the mass content of C is 1.00% to 1.35% based on 100% of the mass of the lithium iron phosphate borate positive electrode material. The lithium iron phosphate borate positive electrode material provided by the application is not only low in price and excellent in ion conductivity, but also high in capacity, excellent in rate performance, and further improved in cycle stability, and has a wider application prospect.

Disclosed herein are a polymeric material comprising a plurality of polymeric nanosheets arranged in a layer-by-layer configuration to provide a two-dimensional microporous polymeric material, wherein each of the plurality of polymeric nanosheets is formed from a plurality of ladder-shaped polymers, the ladder-shaped polymers are formed from at least one multivalent monomeric material that has: two or more polymerisable functional groups selected from one or both of acetylene and vinyl functional groups; and a functional group capable of forming a halogen bond with a halogen atom, use of the polymeric material, and a method of manufacturing the polymeric material. Also disclosed herein is a method of adsorbing Li+ and / or B3+ ions from an aqueous solution comprising a mixture of ionic species.

The invention relates to a magnesium- aluminium layered double hydroxide (Mg-Al LDH) based filler product comprising boron and functionalised with phosphocholine chloride calcium salt tetrahydrate (PC), the synthesis method of this filler product, and obtaining a new material by preparing a composite material of this filler product, which has antibacterial activity, with a thermoplastic polymer or thermosetting polymer. In the production of the composite material that is the subject of the invention, as the polymer, preferably unsaturated polyester resin (DPes) is used. The composite material comprising the filler product of the invention has the feature of preventing bacterial adhesion / biofilm formation. Said material has the potential to be used for various applications, including medical devices, industrial processes, food production, storage and sales areas, food contact surfaces, areas requiring cleaning and hygiene, and different surface materials.

A positive electrode active material for a lithium secondary battery comprises a core component with a lithium transition metal oxide and a coating layer on the core component's surface. The material meets the condition 0.5<A / B<0.8, where A is the normalized intensity of the L3 high peak in a Ni L3-edge spectrum of the positive electrode active material, and B is the normalized intensity of the L3 high peak in a Ni L3-edge spectrum of the core component. The invention includes a positive electrode for a lithium secondary battery, comprising the described active material and a sulfide-based solid electrolyte, and optionally a conductive material. Additionally, a lithium secondary battery comprises the positive electrode active material. The manufacturing method involves preparing the core component, mixing it with a coating precursor to form a starting material, and thermally treating the starting material to form the positive electrode active material, ensuring the condition 0.5<A / B<0.8 is met.

To provide a positive electrode active material which is improved in electrochemical properties and stability.SOLUTION: There is provided a positive electrode active material which includes a lithium composite oxide containing a primary particle containing at least Li, Ni, and B, and a secondary particle in which a plurality of the primary particles are aggregated. A coating layer containing a boron-containing oxide presents on at least part of a surface of the secondary particle. A content of boron (B) in the lithium composite oxide is 0.09 mol% or more and 0.49 mol% or less, and a content of lithium impurities (LiOH) in the lithium composite oxide is 11,661 ppm or less. Weight loss is measured under normal pressure in an Ar atmosphere from 25°C to 350°C at a temperature increase rate of 10°C / min. Here, the onset temperature at which a weight loss (thermal decomposition) peak appears is 231.2°C or above.SELECTED DRAWING: Figure 1

The application relates to the technical field of battery materials, in particular to a layered oxide positive electrode material, a preparation method thereof and application to a sodium battery. The expression of the layered oxide positive electrode material is: AB2Y2X2O12, wherein, A is a sodium storage layer site doping element, B is a transition metal layer cation site doping element, C is a transition metal layer anion site doping element, and Y is a shuttle ion doping element. In the charging and discharging process of the layered oxide positive electrode material, the shuttle ion shuttles between the transition metal layer and the sodium storage layer, which can improve the stability and sodium ion diffusion rate of the material, and effectively solve the problems of unstable iron-manganese-based layer oxygen circulation, low coulomb efficiency and slow sodium ion diffusion rate.

The invention discloses a two-dimensional material and a preparation method and application thereof, and relates to the technical field of two-dimensional materials. The preparation method of the two-dimensional material comprises the following steps: preparing a layered structure Sc2B1. 1C3.2 material by adopting a solid-phase synthesis method; and putting the Sc2B1. 1C3.2 material with the layered structure into an organic solvent, and carrying out ultrasonic stripping, so as to obtain the two-dimensional Sc2B1. 1C3.2, namely the two-dimensional material. The two-dimensional material, namely the two-dimensional Sc2B1. 1C3.2, is prepared through a method of combining high-temperature solid-phase synthesis with ultrasonic stripping, the two-dimensional Sc2B1. 1C3.2 has a wide spectral response range and can absorb light waves from ultraviolet to near-infrared regions, and the method provided by the invention is simple in process, high in product quality and suitable for large-scale production of the two-dimensional Sc2B1. 1C3.2.

The present invention relates to compounds and their nonlinear optical (NLO) crystals of A3B11P2O23 (A=K, Rb, Cs, NH4), their producing method and uses thereof. The series of compounds have a chemical formula of A3B11P2O23 (A=K, Rb, Cs, NH4), which are namely K3B11P2O23, Rb3B11P2O23, Cs3B11P2O23 and (NH4)3B11P2O23. The series of NLO crystals having the chemical formula of A3B11P2O23 (A=K, Rb, Cs, NH4), belong to rhombohedral crystal system, and have a space group of R3, crystal cell parameters of a=b=10.016(5)-12.591(5) Å, c=12.105(6)-14.905(6) Å, Z=3. A3B11P2O23 (A=K, Rb, Cs, NH4) compounds were prepared by a solid-state reaction method or a hydrothermal method, and A3B11P2O23 (A=K, Rb, Cs, NH4) NLO crystals were prepared by a high-temperature solid-state reaction method, a hydrothermal method, or a solution method. T They meet the requirements for the frequency conversion of UV wavelength lasers and could be used to prepare nonlinear optical devices.

Relates to a positive active material and a preparation method thereof, a positive pole piece, a battery and electric equipment, the positive active material comprises Na4-aAbFe3-cBd (PO4) 2-eDf (P2O7), A comprises at least one of Li or K, B comprises a metal element, D comprises at least one of halogen anions, silicate ions, sulfate ions or borate ions,-0.12 < = a < = 0.12, b > = 0, 0 < = c < = 0.3, d > = 0, f > 0, and 0 < e < = 0.1.

The application provides a method for selectively separating and recovering boron from boron-containing aluminosilicate glass, which comprises the following steps: (1) ball milling the boron-containing aluminosilicate glass, slurryizing the material after roasting treatment by adding water, mixing the slurryized material with sulfuric acid, and obtaining a boron-containing leaching solution after pressure acid leaching treatment; (2) adjusting the pH of the boron-containing leaching solution, adding sodium carbonate to carry out magnesium removal treatment, and obtaining a sodium borate solution; (3) carrying out concentration and crystallization treatment on the sodium borate solution, and obtaining borax. The method adopts the processes of ball milling-transformation roasting-pressure acid leaching-carbonation magnesium removal-evaporation crystallization, recovers boron in the form of borax from the glass, synchronously recovers magnesium carbonate as a byproduct, and realizes selective separation and recovery of boron, magnesium and sodium elements in the glass powder.

The invention discloses a silicon-boron-carbon-nitrogen gel-reduced graphene-zeolite three-dimensional structure composite material as well as a preparation method and application thereof.The structural design that reduced graphene oxide is used for modifying SiBCN aerogel and a molecular sieve is compounded is adopted, and assembly of the SiBCN aerogel is promoted and assisted through the powerful self-assembly capacity of rGO; the rGO is filled in macroporous structures of the SiBCN aerogel to relieve collapse of pores and reduce the number of the macroporous structures, and meanwhile, a carbon-rich phase and a graphene phase generated in situ during preparation of the SiBCN aerogel are beneficial to adsorption and filtration of interference gas. By controlling the heat treatment system, the prepared composite material has a more stable three-dimensional pore structure, can be applied to various complex gas monitoring environments, is beneficial to stable work of a combustible gas sensor, and is not influenced by various interference gases.

A battery comprising a compound of formula (I), wherein X is Al or B, and R 1 is, independently in each occurrence, a substituent; and two R 1 The groups may be linked to form a ring, M + is a cation, the battery further comprises a solvent, and the solvent molecule: M + The ratio of ions is less than or equal to 10: 1. The battery may be a metal battery, for example a lithium battery. [Formula 1] TIFF2025510902000019.tif39157

The present application relates to the technical field of positive electrode materials of batteries, and provides a lithium iron borate phosphate positive electrode material and a preparation method therefor, a positive electrode sheet, and a secondary battery. The chemical general formula of the lithium iron borate phosphate positive electrode material is LixFeTiyPzBwO(4z+3w+2y) / C, wherein x, y, z, and w are all non-zero positive numbers, 1.02≤x≤1.05, 0.01≤y≤0.05, 0.92≤z≤0.95, and 0.05≤w≤0.15, and on the basis of the mass of the lithium iron borate phosphate positive electrode material being 100%, the mass content of C is 1.00% to 1.35%. The lithium iron borate phosphate positive electrode material provided by the present application has a low price, excellent ionic conductivity, high capacity, excellent rate performance, and improved cycling stability, and thus has wide prospects for application.

In a method of manufacturing a cathode active material for a lithium secondary battery, a preliminary lithium metal oxide particle is prepared. The preliminary lithium metal oxide particle is cleaned using a boron compound cleaning solution. A cathode active material for a lithium secondary particle includes a lithium metal oxide particle where a ratio of a B+ peak intensity relative to a sum of peak intensities of Li+, B+ and LiB+ fragments by a TOF-SIMS analysis is in a range from 0.03% to 1.5%.

The invention discloses a metal intercalation boron-carbon superconducting material GeB2C2 under normal pressure and a preparation method of the metal intercalation boron-carbon superconducting material GeB2C2. The material has a two-dimensional Kagome lattice structure, the space group is P6 / mmm (No.191), the lattice constants are a = b = 2.732, and c = 16.784. Through calculation and prediction of a first principle, the material has a superconducting transition temperature of about 48 K under a normal pressure (0 GPa) condition, and is dynamically stable. The superconducting mechanism is derived from a strong electroacoustic coupling effect, and the coupling constant lambda is about 1.64. The material is composed of Ge, B and C elements rich in earth crust, the raw materials are easy to obtain, the cost is low, and the large-scale preparation potential is achieved. Compared with a traditional normal-pressure superconducting material, the material disclosed by the invention has a relatively high superconducting transition temperature; compared with a high-voltage superconductor, a high-voltage environment is not needed, and the preparation and application threshold is remarkably reduced. The material can be applied to the fields of high-performance superconducting filters, superconducting nanowire single-photon detectors, small superconducting magnets and the like, and has important scientific research values and good practical application prospects.

The present application relates to a high-purity CBN micro-powder preparation method, which comprises the following steps: mixing dehydrated borax with urea, heating and reacting in an ammonia gas flow, and obtaining boron nitride after purifying the reaction product; mixing a catalyst, HBN material and a catalytic additive; sealing, static pressing, granulating, pressing into a synthesis column, assembling into a synthetic block with a block mechanism, loading the synthetic block into a six-surface pressing machine, knocking the high-pressure synthetic block sample obtained by high-temperature and high-pressure synthesis into pieces, loading the pieces into a ball mill tank, opening the ball mill tank after ball milling, adding deionized water for boiling, collecting CBN at the bottom of the container, boiling in a strong alkali solution, and then washing with deionized water; collecting CBN at the bottom of the container, boiling in a strong acid solution, and then washing with deionized water, drying, shaping, screening and selecting, to obtain CBN crystal micro-powder; the present application has the advantages of high purity, good thermal stability, high grinding efficiency, high purity, high wear resistance, high thermal stability, etc.

The present invention provides a lead barium boron nitrogen oxide compound and a lead barium boron nitrogen oxide nonlinear optical crystal as well as a preparation method and use thereof. The chemical formula of the compound is Pb2Ba3(BO3)3(NO3), the molecular weight is 1039.98, and the compound is prepared by a solid phase synthesis method or a vacuum packaging method. The chemical formula of the crystal compound is Pb2Ba3(BO3)3(NO3), the molecular weight is 1039.98, and the crystal belongs to the orthorhombic system with a space group of C 2221, the unit cell parameters are a =10.4818(5)Å, b =14.4102(7)Å, c =8.0332(4)Å, α= 90°, β= 90°, c= 90°, the unit cell volume is 1213.37(10)Å 3 The frequency doubling effect of the crystal is about 3.2 times that of KH2PO4 (KDP), and the ultraviolet cutoff edge is about 320 nm. The crystal is grown by melt method, high-temperature melt method, or vacuum packaging method. The crystal has good chemical stability and can be used as a short-wavelength ultraviolet nonlinear optical crystal in all-solid-state lasers.

This application relates to the field of battery cathode materials, and in particular to a high-tap-density lithium-rich manganese-based cathode material and its preparation method. In this application, phosphate and oxalate are used as precipitants, and a certain amount of polymer resin is added. The polymer resin participates in the oxalate precipitation process, followed by sintering. Simultaneously, high-speed stirring and ultrasonic treatment are used to obtain a relatively dense particle system, which also improves the temperature tolerance of the processing. This method enables the achievement of high tap density and good electrical performance even with certain temperature fluctuations.

A solid electrolyte contains a borate containing Li, an element R selected from a group including Yb, Er, Tm, and La, and an element M1 selected from a group including Mg, Sr, and Ca.

The application relates to a preparation method of tungsten-doped Li9B 19 S 33 , comprising the following steps: providing pre-prepared raw materials containing only Li, B, W and S elements, and regulating the molar ratio of Li, B, W and S in the pre-prepared raw materials to be 9-3x: 19-x: x: 33; grinding the pre-prepared raw materials and then performing ball milling to obtain a powder; pressing the powder into a sheet to obtain a pre-prepared sheet; and performing heat treatment on the pre-prepared sheet, cooling after heat preservation at a predetermined temperature for a predetermined time to obtain the tungsten-doped Li9B 19 S 33 , wherein the stoichiometric formula of the tungsten-doped Li9B 19 S 33 is Li 9‑3x B 19‑x W x S 33 , and x is a value in the range of 0.01-0.1. According to the application, the molar ratio of Li, B, W and S in the pre-prepared raw materials is regulated to be 9-3x: 19-x: x: 33, and then the pre-prepared raw materials are ground and ball milled, and solid-phase synthesis is performed at high temperature, so that the tungsten-doped Li9B 19 S 33 is obtained, the conductivity of which can reach 0.53 mS / cm, and the conductivity is significantly improved compared with that of Li9B 19 S 33 crystal.

The invention belongs to the technical field of material synthesis, and particularly relates to calcium dodecahydrododecaborate as well as a synthesis method and application thereof. According to the synthesis method of calcium dodecahydrododecaborate provided by the invention, calcium hydride CaH2, a borane dimethyl sulfide complex and an ether mixed organic solvent react in a reaction kettle to obtain a product, and monoethylene glycol dimethyl ether and tetrahydrofuran cyclic ether are compounded to obtain the ether mixed organic solvent; according to the method, the yield and purity of the product calcium dodecahydrododecaborate are improved, meanwhile, deionized water is used for carrying out solvent exchange on the product and drying is carried out, the purity of the product calcium dodecahydrododecaborate is further improved, efficient synthesis of calcium dodecahydrododecaborate is achieved, industrial preparation is facilitated, high-purity calcium dodecahydrododecaborate is provided, and the method is suitable for industrial production. The method is expected to meet the requirement of solid electrolyte battery commercialization on electrolyte, and solves the technical problem of lack of an efficient synthesis process of calcium dodecahydrododecaborate at present.

The present invention belongs to the field of sodium ion batteries, and specifically relates to an anion-doped nickel-manganese-based layered oxide, the chemical formula of which is: Na a Ni b Mn c Me d O 2‑x A x , where Me represents a doped transition metal element and A represents an anion; where a is 0.6≤a≤1.2, b is 0.1<b<0.9, c is 0.1<c<0.9, d is 0≤d≤0.5, and x is 0<x<1.0; A comprises five or more anions capable of forming a high-entropy configuration, and the value of each anion is greater than 0 and less than or equal to 0.1. The present invention also includes the preparation and application of the material. The present invention provides a high-entropy anion material that can effectively improve the stability of the O layer and improve the high-voltage performance of the material.

The present application relates to a kind of compound potassium rubidium borophosphate and a kind of preparation method and purposes of potassium rubidium borophosphate nonlinear optical crystal, the chemical formula of the compound potassium rubidium borophosphate and its crystal is K 0.9 Rb 2.1 B8PO 16 Crystal belongs to monoclinic system, space group Cc, cell parameter Z=4, molecular weight is 586.16. Compound potassium rubidium borophosphate is synthesized using high-temperature solid-phase reaction method, and potassium rubidium borophosphate nonlinear optical crystal is grown using high-temperature melt method. The preparation method is simple and low in cost. The obtained crystal has a wide light transmission range, stable physical and chemical properties, and can be used to prepare nonlinear optical devices.

The present disclosure relates to a sulfide solid electrolyte, a method for preparing the sulfide solid electrolyte, and an all-solid-state rechargeable battery. The sulfide solid electrolyte includes sulfide solid electrolyte particles and a coating layer on a surface of the sulfide solid electrolyte particles, in which the coating layer includes CO3 < 2-> and PO4 < 3->, and a ratio of a maximum peak intensity of CO3 < 2-> to a peak intensity of PO4 < 3-> in a Fourier transform infrared spectrum is about 0.5 to about 1. The sulfide solid electrolyte has excellent surface characteristics, high stability against air and moisture, and high retention of ionic conductivity over time.

The application discloses a boron adsorbent and a preparation method and a boron adsorption method thereof. The preparation method of the boron adsorbent comprises the following steps: preparing a hydrotalcite precursor solution, wherein the hydrotalcite precursor solution at least contains aluminum ions and magnesium ions; mixing the hydrotalcite precursor solution with tartaric acid to obtain a reaction precursor solution; adjusting the pH value of the reaction precursor solution to be alkaline, so that the aluminum ions, the magnesium ions and the tartaric acid in the reaction precursor solution generate a coprecipitation reaction to form a hydrotalcite precursor, and the tartaric acid is intercalated between the layers of the hydrotalcite precursor to obtain a reaction mixture; and then aging treatment is performed to obtain the boron adsorbent. The preparation method has the advantages of mild conditions, simple process and environmental friendliness. The prepared boron adsorbent has a wide application range, has a good adsorption effect in the pH value range of 5-10, has a large adsorption capacity, is less interfered by other coexisting ions, and has a strong recycling performance.

The invention relates to a method for producing boron compounds from boron ores such as colemanite and tinkal by means of a photocatalytic process that provides solutions to the high energy requirements, environmental impacts, difficult process conditions, and cost issues arising from conventional chemical processes.