58results about "Boron compounds" patented technology

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.

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.

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.

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 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 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 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.

The application discloses a kind of porous polymer flame retardant and its preparation method and application.The porous polymer flame retardant has the structure as shown in formula (I):The porous polymer flame retardant prepared in the application is novel in structure, the phosphorus content is 35.3wt%, the nitrogen content is 15.9wt%, the boron content is 12.3wt%, the total content of flame-retardant element is as high as 63.5wt%, and the stability is high.The preparation method provided in the application is simple, low in cost, suitable for large-scale production, and the porous polymer flame retardant prepared in the application has good application prospect in water-based flame-retardant coating and flame-retardant paper.

Disclosed are a positive active material for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery including the same. A positive electrode active material for a rechargeable lithium battery includes a lithium nickel-based metal composite oxide, in which the positive electrode active material includes secondary particles in which a plurality of primary particles are aggregated, the positive electrode active material includes a first boron coating portion present on a surface of the secondary particles and a second boron coating portion present on a surface of the primary particles within the secondary particles, and a weight of the first boron coating portion is greater than a weight of the second boron coating portion.

To provide a lithium ion secondary battery improved in the ionic conductivity, and a manufacturing method thereof.SOLUTION: In one embodiment, a lithium ion secondary battery includes: 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. The separator includes a coating layer on at least one of the two sides of the separator, and the coating layer includes boron nitride nanotubes.SELECTED DRAWING: Figure 1

Disclosed are novel organoborane compositions of Formula (I), (II) or (III),wherein R1, R2, R3, R′, R″, n, n′, n″, m, m′, and m″ are defined hereinabove. Also disclosed is a method of using said compositions for electrolytic media in lithium rechargeable batteries, including lithium-ion or lithium-air rechargeable batteries. Also disclosed are compositions containing said Formula (I), (II) and (III) compounds with lithium salts, useful as electrolytic media or matrices.

The invention belongs to the technical field of silicon nitride ceramic preparation, discloses a synthesis method of a non-oxide sintering aid and application of the non-oxide sintering aid in silicon nitride sintering, and aims to solve the technical bottlenecks of high temperature, high energy consumption, difficulty in impurity control, large particle size and the like in the preparation of the existing silicon nitride ceramic sintering aid. The novel non-oxide sintering aid is prepared through a low-temperature solid boronizing sintering reaction on the basis of silicon nitride raw powder, rare earth oxide and a specific boronizing agent system, and the novel non-oxide sintering aid is suitable for assisting high-thermal-conductivity dense sintering of silicon nitride ceramics in a low-oxygen and high-nitrogen environment. The new method greatly improves the comprehensive performance of the material, is low in energy consumption, is suitable for large-scale and low-cost production, and has important engineering application value and industrial popularization potential.

An electrical system that includes a power source, a load, and an electrical connection operable to conduct electricity between the power source and the load, the electrical connection including an outer casing comprising a non-conducting material, and a material disposed within the outer casing, wherein the material is electrically conductive, the material including a boron-containing material and metal oxide nanoparticles, wherein the electrical connection includes a wire or cable.

The application discloses a kind of MXene nanometer roll, composite material and its preparation method and use, wherein, the MXene nanometer roll is a kind of MXene material with one-dimensional hollow roll structure, by two-dimensional MXene material curling self-assembly is obtained, break the cognition of people to MXene material belongs to two-dimensional material.The application further provides the preparation method of MXene nanometer roll, steps include: two-dimensional MXene material or etching MAX phase material is obtained accordion appearance etching material, dispersed in liquid phase containing positive ion pair reagent, under the action of external force, obtain MXene nanometer roll, preparation method is simple and easy to operate.The MXene nanometer roll of the application and carbon nanotube all have one-dimensional nanostructure, can be used as alternative material to replace carbon nanotube;Since the application also has the characteristics of distinguishing carbon nanotube, more new field applications can be realized, such as as slow-release material etc.

The invention discloses a ZIF-67 derivative hollow material and a room-temperature boronizing and vulcanizing two-step preparation method thereof. The preparation method comprises the following steps: firstly, synthesizing rhombic dodecahedron ZIF-67 by adopting a room temperature precipitation method, and then in-situ growing CoNi-LDH nanosheets on the surface of the rhombic dodecahedron ZIF-67 by introducing Ni < 2 + > to form a core-shell structure precursor; then boronizing treatment and sulfidizing treatment are sequentially carried out at the room temperature, wherein the boronizing treatment realizes partial selective etching of the material, and a core-shell / hollow coexisting structure is formed; and the sulfuration treatment further completes structure transformation and surface refinement, and finally a complete hollow structure with an ultrafine nanosheet surface is obtained. According to the application of the material as a supercapacitor electrode material, the material is charged and discharged within the range of 0-0.5 V, and when the discharge current density is 1 A g <-1 >, the specific capacitance is 1550-1620 F g <-1 >; and compared with 1 A g <-1 >, the specific capacitance retention rate is 70-80% under the current density of 10 A g <-1 >.

A sulfide solid electrolyte, including sulfide solid electrolyte particles, and a coating layer on a surface of the sulfide solid electrolyte particles, wherein the coating layer includes CO32− and PO43−, and a ratio of a maximum peak intensity of the CO32− to a peak intensity of the PO43− in infrared spectroscopy is about 0.5 to about 1.

The present invention relates to a positive electrode active material for an all-solid-state battery, a method of preparing same, and a positive electrode for an all-solid-state battery and an all-solid-state battery comprising same.