223results about "Boron compounds" patented technology

The invention provides a lithium iron phosphate positive electrode material and a preparation method thereof, a positive electrode plate and a secondary battery, and belongs to the field of battery materials, the average particle size of primary particles of the lithium iron phosphate positive electrode material is 250-330 nm, and the lithium iron phosphate positive electrode material comprises first particles and second particles; the particle size of the first particles is less than or equal to 200nm, and the number ratio of the first particles is 35-45%; the second particles meet the following conditions: the particle size is greater than or equal to 1 mu m, and the quantity ratio is 1-5%; the second particle has a columnar structure, and the ratio of the length to the width of the columnar structure is (1.7-6): 1. According to the invention, the lithium iron phosphate positive electrode material with high compaction density and excellent discharge performance can be obtained.

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.

Flash Joule heating (FJH) for production of one-dimensional (1D) carbon and / or boron nitride nanomaterials, and 1D materials integrated with 0D, 1D, 2D, and 3D nanomaterials, composites, nanostructures, networks, and mixtures thereof. Such materials produced by FJH include 1D carbon and hybrid nanomaterials, boron nitride nanotubes (BNNTs), turbostratic boron-carbon-nitrogen (BCN), doped (substituted) graphene, and heteroatom doped (substituted) re-flashed graphene.

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 present invention provides a method for comprehensive utilization of ferroboron mixed concentrate based on atmosphere-controlled low-temperature roasting. In the present invention, a mixture of ferroboron mixed concentrate powder and sodium carbonate is pre-blocked, and the blocks are roasted in an atmosphere containing CO and / or CO2, H2, and N2. The roasting temperature is 500-900°C, and the roasting time is 10-60 minutes. The roasted sample is placed in a ball mill for wet grinding according to a certain slurry concentration. The slurry can be filtered to obtain a sodium borate solution, and the filtrate can be used to prepare borax or boric acid products; the filter residue can be subjected to magnetic separation to obtain a high-grade magnetite concentrate, which is a high-quality raw material for ironmaking. The magnetically separated tailings are magnesium-silicon enriched products, which can be used as a raw material for preparing refractory / insulating materials. The present invention has the advantages of simple operation, strong raw material adaptability, environmental protection and energy saving, high production efficiency, and high utilization rate of boron, magnesium, and iron. It provides technical support for the efficient and comprehensive utilization of my country's abundant ferroboron-magnesium-iron ore resources, and has broad prospects for promotion and application.

Provided are a positive electrode active material and a preparation method therefor, a positive electrode sheet, a battery, and an electric device. The positive electrode active material comprises Na4-aAbFe3-cBd(PO4)2-eDf(P2O7), wherein A comprises at least one of Li and K, B comprises a metal element, D comprises at least one of a halogen anion, a silicate ion, a sulfate ion, or a borate ion, -0.12≤a≤0.12, b≥0, 0≤c≤0.3, d≥0, f>0, and 0<e≤0.1.

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 invention provides a composite modified ternary precursor and a preparation method and application thereof.The preparation method comprises the following steps that a nickel-cobalt-manganese ternary mixed salt solution, a precipitator solution, a boron source solution and a complexing agent are injected into a base solution in a parallel flow mode for a first coprecipitation reaction, and a first precursor is obtained; stopping injecting the nickel-cobalt-manganese ternary mixed salt solution, continuously injecting the precipitant solution, the boron source solution and the complexing agent, and carrying out a second coprecipitation reaction to obtain a composite modified ternary precursor; wherein the flow rate of the boron source solution is gradually increased at the speed of 0.02 L / h to 0.2 L / h. According to the invention, the boron gradient doped and coated composite modified ternary precursor is prepared by adjusting the feeding type and the doping mode in the coprecipitation process, so that the structural stability of the precursor can be improved, and the capacity and the cycle stability of the ternary material can be 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.

The present invention provides a pre-sodium treated positive electrode material for copper-zinc-based sodium ion battery and method of preparing the same. The method comprises obtaining a mixed solution containing copper-zinc-based elements through wet pre-sodium first, then conducting spray drying of the mixed solution containing copper-zinc-based elements to obtain precursor powder of positive electrode material for copper-zinc-based sodium ion battery, and then mixing the precursor powder with a sodium source for sintering, coating and crushing to obtain positive electrode material for copper-zinc-based sodium ion battery. The pre-sodium treated positive electrode material for copper-zinc-based sodium ion battery provided by the present invention introduces weakly oxidizing zinc and nickel elements on the basis of the copper-based material, reducing the use of highly oxidizing copper and iron elements. After being prepared into a battery, the oxidation of metal ions in the electrochemical environment is reduced overall, greatly reducing the oxidation of copper ions to the electrolyte, reducing the CO2 gas generated by oxidation and decomposition of the electrolyte, stabilizing the electrochemical environment, and improving the electrical performance of the battery.

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.

A battery comprising a compound of formula (I): (I) wherein X is Al or B; R1 in ach occurrence is independently a substituent; and two R1 groups may be linked to form a ring; and M+ is a cation, and wherein the battery further comprises a solvent wherein a ratio of solvent molecules: M+ ions is no more than 10:1. The battery may be a metal battery, e.g. a lithium battery.

The invention relates to a preparation method of high-purity CBN (cubic boron nitride) micro powder, which comprises the following steps: mixing dehydrated borax with urea, heating and reacting in ammonia gas flow, and purifying the reaction product to obtain boron nitride; mixing a catalyst, an HBN material and a catalytic additive; the preparation method comprises the following steps: sealing, carrying out static pressure, granulating, pressing to obtain a synthetic column, filling the synthetic column into a pyrophyllite block mechanism to form a synthetic block, filling the synthetic block into a cubic press, knocking and crushing a high-pressure synthetic block sample obtained by high-temperature and high-pressure synthesis, putting into a ball-milling tank, carrying out ball milling, opening the ball-milling tank, adding deionized water, boiling with water, and carrying out vacuum drying to obtain a finished product. Collecting the CBN at the bottom of the container, putting the CBN into a strong alkali solution, boiling, and washing with deionized water; cBN at the bottom of the container is collected and then put into a strong acid solution to be boiled, then deionized water is used for flushing, drying, shaping, screening and shape selecting treatment are conducted, and CBN crystal micro powder is obtained; the invention has the advantages of high purity, good thermal stability, high grinding efficiency, high purity, high wear resistance and high thermal stability.

Process for making a manganese composite (oxy)hydroxide with a mean particle diameter D50 in the range from 2 to 16 μm comprising the step(s) of combining (a) an aqueous solution containing salts of nickel and of manganese, and, optionally, at least one of Al, Mg, or transition metals other than nickel and manganese wherein at least 50 mole-% of the metal is manganese, (b) with an aqueous solution of an alkali metal hydroxide and (c) an organic acid or its alkali or ammonium salt wherein said organic acid bears at least two functional groups per molecule and at least one of the functional groups is a carboxylate group.

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 scalable method of synthesizing hexagonal boron nitride (hBN) films and nanotubes by chemical vapor deposition (CVD) is provided. The method includes atmospheric pressure CVD of hBN on metallic growth substrates using solid boron sources and molecular nitrogen. The solid boron source can be in the form of powder, fragments, or platelets and placed upstream, on top, or below the growth substrate. The growth substrate can include Fe, Ni, Cr, Cu, and their alloys including various steels. The growth atmosphere includes nitrogen compounds, inert gases and hydrogen. The reaction can occur within a reaction vessel heated to 800ºC-1200ºC in less than 120 minutes with sequential cooling at a controlled rate. In laboratory testing, the hBN film exhibited improved protection against harsh corrosion over long periods and resistance to high-temperature oxidation in air.

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 main purpose of the present disclosure is to provide a positive electrode active material that can inhibit the reaction with a solid electrolyte. In the present disclosure, the above-mentioned problem is solved by providing the following coated active material, which has a positive electrode active material and a coating portion that covers at least a portion of the surface of the positive electrode active material, and the coating portion contains a lithium scandium phosphate compound or a lithium borate compound.

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.

The invention provides a compound monoboric acid monohydrate dihydroxy lead decaborate nonlinear optical crystal as well as a preparation method and application thereof, and belongs to the technical field of inorganic chemistry. The chemical formula of the crystal is Pb2B10O16 (OH) 2. B (OH) 3. H2O, the molecular weight is 892.35, the crystal belongs to a monoclinic system and P21, the crystal is obtained by growing in a closed system by adopting a hydrothermal method or growing in an open system by adopting a room temperature solution method, the crystal is easy to grow up, transparent and unwrapped in the preparation process, and the crystal has the advantages that the growth speed is high, the cost is low, a large-size crystal is easy to obtain and the like. The obtained crystal has the advantages that the light transmission wave band reaches a deep ultraviolet region, physical and chemical properties are stable, deliquescence is not easy, processing and storage are easy, and the like, and can be further used for preparing a frequency doubling generator, an upper or lower frequency converter and an optical parametric oscillator.

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.

Provided is a lithium ion secondary battery including an electrode assembly including an anode, a cathode, and a separator disposed between the anode and the cathode, a case accommodating the electrode assembly, and an electrolyte filling the case, wherein the separator includes a coating layer on at least one of both sides of the separator, and the coating layer includes boron nitride nanotubes.

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.

The invention discloses boron nanoparticles as well as a preparation method and application thereof, and belongs to the technical field of nano fertilizers. The preparation method of the boron nanoparticles comprises the following steps: S1, adding soluble calcium salt into a PVP (Polyvinyl Pyrrolidone) solution to obtain a soluble calcium salt solution; and S2, adding the soluble calcium salt solution into the borax solution, stirring to obtain a precipitate, and calcining the precipitate at 400-500 DEG C to obtain the boron nanoparticles. In addition, the invention also provides the boron nano-particles prepared by the preparation method or application of the boron nano-particles in improving the salt tolerance of rape. According to the boron nanoparticles prepared by the method, the salt tolerance of the rape is remarkably improved.

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