275results about "Titanium compounds" patented technology

In order to solve the problems that an existing positive electrode material is unstable in structure and low in energy density, the invention provides a positive electrode material and a preparation method thereof, a positive electrode plate and a battery, the positive electrode material comprises lithium cobalt oxide of a layered structure, the chemical formula of the lithium cobalt oxide is Li < 1-alpha-beta > Na < alpha > (Mg < gamma > Ti < delta > Co < 1-gamma-delta >) O2, alpha is smaller than or equal to 0.005, and beta is 0.02-0.05; gamma is equal to 0.002 to 0.004, delta is equal to 0.001 to 0.003, and gamma + delta is equal to 0.003 to 0.006.

The invention discloses a polydopamine modified metatitanic acid type lithium ion sieve and a preparation method thereof, and belongs to the technical field of lithium ion sieves, the preparation method comprises the following steps: grinding and uniformly mixing lithium acetate dihydrate and titanium dioxide in an organic solvent, and calcining the mixture at 650-800 DEG C for 3-5 hours to prepare a Li2TiO3 precursor; the preparation method comprises the following steps: putting dopamine hydrochloride, aminated crown ether and a Li2TiO3 precursor into a tris (hydroxymethyl) aminomethane solution with the pH value of 8-9, carrying out a constant-temperature oscillation reaction, carrying out suction filtration, and drying at low temperature, so as to obtain the polydopamine modified metatitanic acid type lithium ion sieve. According to the lithium ion sieve, the adsorption effect on lithium ions can be improved, the lithium extraction efficiency is improved, and the problem of low adsorption capacity of a lithium ion sieve in the prior art is solved.

To provide a conductive paste for an internal electrode of a layered ceramic capacitor, which is capable of maintaining relatively high coverage even if the internal electrode constitutes a thin layer.SOLUTION: Provided is a conductive paste for forming internal electrodes 4 and 5 of a layered ceramic capacitor 1 fabricated through a firing step. The conductive paste includes conductive metal powder, ceramic powder, an organic solvent, and an organic binder. The conductive metal powder contains a silver / palladium alloy. At least a portion of the ceramic powder comprises an ABO3 type oxide having a specific ion radius in which the ratio of the ion radius in the 6-coordination of an element at the A site in ABO3 with respect to the ion radius in the 6-coordination of a metal element contained in the conductive metal powder is 0.96 or more and 1.10 or less.SELECTED DRAWING: Figure 1

The invention discloses a preparation method of a lithium aluminum titanium phosphate solid electrolyte nano powder material, which comprises the following steps: S1, weighing a lithium source, an aluminum source, a titanium source and a phosphorus source, and preparing a sol precursor; s2, performing microwave treatment to obtain a gelatinous intermediate; s3, carrying out annealing treatment after grinding to obtain nano titanium aluminum lithium phosphate powder; s4, placing the substrate in a plasma enhanced atomic layer deposition reaction cavity, vacuumizing, and introducing plasma activation gas; alternately pulse trimethylaluminum and titanium tetrachloride precursors, and depositing to obtain a gradient oxide intermediate layer; s5, introducing oxygen plasma to oxidize the residual precursor to form a gradient oxide coating layer; and S6, carrying out annealing treatment to obtain the lithium titanium aluminum phosphate solid electrolyte nano-powder material. According to the preparation method disclosed by the invention, the side reaction of the LATP powder and lithium metal is effectively inhibited, the interface stability and the ionic conductivity are improved, and the high-performance requirement of an all-solid-state lithium ion battery on a solid electrolyte material can be met.

The invention discloses a method for preparing a carbon-coated lithium titanate negative electrode material by a one-step solid phase method, and belongs to the technical field of lithium ion battery materials. The method comprises the following steps: uniformly mixing and dispersing carbon-containing lithium salt, titanium salt and metal hydride to obtain a solid mixture; and roasting the obtained solid mixture in a protective atmosphere to obtain the carbon-coated lithium titanate negative electrode material. According to the preparation method, a certain amount of metal hydride is added into the reaction raw materials, a high-temperature solid-phase method is used, and carbon in the carbon-containing lithium source is reduced by the metal hydride to serve as a carbon source, so that the carbon-coated lithium titanate negative electrode material can be directly synthesized in one step, additional carbon sources and technological processes are not needed, and the preparation technology is greatly simplified.

The invention discloses a method for synthesizing nano magnesium dititanate by a solid phase method, which comprises the following steps: S1, weighing a titanium-containing solid compound, a nano magnesium oxide solid and a hydrolytic alkaline solid compound, uniformly mixing, adding a surfactant, and grinding to obtain a solid mixture; s2, adding a mixed solution with an alcohol-water ratio of 1: 1 into the solid mixture, and grinding to obtain mixed slurry; s3, transferring the mixed slurry into a centrifugal tube, placing the centrifugal tube in a centrifugal machine for centrifugal separation, pouring out supernatant after the centrifugal separation is finished, and obtaining a mixed product after a water washing process and an alcohol washing process are finished; s4, soaking the mixed product in an inorganic acid solution, transferring the soaked mixed product into a centrifugal tube for centrifugal separation, sequentially completing water washing and alcohol washing processes, and then drying to obtain MgO-coated TiO2 with a core-shell structure; s5, carrying out high-temperature calcination on the obtained MgO-coated TiO2 to obtain a nano magnesium dititanate solid; according to the invention, the problems of large particle size and non-uniform chemical composition of the magnesium dititanate powder prepared in the prior art are solved.

An embodiment of the present invention pertains to a titanate compound fine particle powder containing a modified titanate compound powder. Specifically, the titanate compound fine particle powder provides a titanate compound powder dispersion capable of suppressing, with a small amount of a polymer dispersant, the aggregation and re-aggregation of particles. Another embodiment of the present invention pertains to a titanate compound powder dispersion that exhibits excellent dispersibility in various solvents. Still another embodiment of the present invention pertains to an economically and industrially advantageous method for producing a titanate compound fine particle powder. Provided is a titanate compound fine particle powder that contains a modified titanate compound powder including cellulose nanofibers and a titanate compound powder. The cellulose nanofibers and the titanate compound adhere to or adsorb to each other. The ratio of the total carbon content of the titanate compound fine particle powder and the BET specific surface area of the titanate compound fine particle powder is 0.006 or less. Also provided is a method for producing the titanate compound fine particle powder, the method including mixing an unmodified titanate compound powder and the cellulose nanofibers, and then drying the mixture.

A negative electrode composition is provided. [Solution] The negative electrode composition includes composition particles and dispersed particles, both of which are active materials. The composition particles include a lithium-titanium composite oxide, which includes lithium and titanium. The dispersed particles include a structural element composite oxide, which includes a structural element, which includes tin and at least two elements selected from the group consisting of magnesium, aluminum, silicon, calcium, chromium, manganese, iron, cobalt, nickel, copper, zinc, gallium, and germanium. When certain conditions are met, the composition contributes to improving the safety, service life, stability, and capacity of the battery.

The invention provides a halide electrolyte material and a preparation method thereof, a positive plate, a secondary battery, a battery assembly and electric equipment. The halide electrolyte material is doped with a fluorine element and a zinc element. The halide electrolyte material provided by the invention has good ionic conductivity and air stability.

An electrode 100 of the present disclosure includes a first active material 1, a second active material 2, and a coating material 3. The first active material 1 has a surface of which 0% or more and less than 35% is coated with the coating material 3, and the second active material 2 has a surface of which 90% or more is coated with the coating material 3. The coating material 3 includes Li, Ti, M, and F, where M is at least one selected from the group consisting of Ca, Mg, AI, Y, and Zr.

The invention provides a hydrogen interstitial doped strontium titanate material and a preparation method thereof, the hydrogen interstitial doped strontium titanate material is prepared by doping a hydrogen element into a strontium titanate single crystal through a solid-phase reaction, and the hydrogen element is introduced into a strontium titanate lattice interstitial site by using sodium borohydride as a hydrogen source. According to the hydrogen gap doped strontium titanate material disclosed by the invention, the carrier concentration is obviously increased, the absorption of the material in a range from visible light to infrared light is enhanced by doping, and the photon utilization rate is improved. Compared with heavy metal displacement doping and hydrogen ion gap doping, the carrier mobility is not damaged, environmental protection is easy, the cost is low, doping conditions are not harsh, and large-scale industrial production is easy.

To provide a liquid composition for forming a BCTZ film, which can control the crystal particle size and form a BCTZ film with stable properties, a method for producing the liquid composition for forming a BCTZ film, and a BCTZ film, and a method for producing the BCTZ film.SOLUTION: A liquid composition for forming a BCTZ film is provided, in which barium carboxylate, calcium carboxylate, a titanium alkoxide and a zirconium alkoxide are mixed in an organic solvent in a molar ratio of Ba:Ca:Ti:Zr=(1-X):X:(1-Y):Y (0.03≤X≤0.20, 0.05≤Y≤0.25) and a stabilizer is added. The barium carboxylate and calcium carboxylate are metal salts of carboxylic acids represented by the general formula CnH2n+1COOH (5≤n≤7). The organic solvent is a mixed solvent containing a carboxylic acid and an acetate.SELECTED DRAWING: None

The method for producing a halide solid electrolyte according to the present disclosure comprises: (A) halogenating an oxide mixture containing a composite oxide containing Li and Ti and an oxide raw material containing Li and M, thereby obtaining a halide solid electrolyte containing Li, Ti, M, and X; here, M is at least one element selected from the group consisting of metal elements (excluding Li and Ti) and metalloid elements, and X is at least one element selected from the group consisting of F, Cl, Br, and I.

The present disclosure discloses provides a solid-state electrolyte material and a preparation method thereof, a cathode active material, a cathode plate, a solid-state battery, and an electrical device. The solid-state electrolyte has a NASICON crystal structure. In an X-ray diffraction pattern of the solid-state electrolyte material, the solid-state electrolyte material has a characteristic diffraction peak exhibit at a diffraction angle 20 values of 14.5 ° to 14.8 °, a characteristic diffraction peak at a diffraction angle 20 value of 19.5 ° to 19.7 °, and a characteristic diffraction peak at a diffraction angle 20 value of 22.5 °to 22.8 °. A ratio of a peak intensity I1 of the characteristic diffraction peak at a 20 value of 14.5 °to 14.8 °to a peak intensity I2 of the characteristic diffraction peak at a 20 value of 22.5 °to 22.8 °satisfies: 1.5≤I2 / I1≤3. Thus, an ionic conductivity and structural stability of the solid-state electrolyte are improved.

The present invention is based on Na2Ti7O 15 This paper describes a doped sodium titanate electrode material, its preparation and use. The electrode material has a porous block structure stacked with nanorods and is synthesized by a simple solid-state method using proportional ball milling of precursors sodium carbonate and anatase titanium dioxide followed by microwave sintering in air. The resulting Na2Ti7O 15 The addition of Na increases the exposure of the (100) sodium storage crystal plane of Na2Ti3O7 sodium titanate and decreases the exposure of the (003) crystal plane, resulting in Na2Ti7O 15 has four TiO6 octahedra in one structural unit, providing more sodium storage sites and wider sodium ion diffusion channels, improving the specific capacity and rate performance of the material. 15 The TiO6 octahedra in the upper and lower layers are connected to each other, making the structure more stable during the sodium ion insertion / extraction process, thereby improving the long-term cycling stability of the material.

The application discloses a method for preparing metatitanic acid with stable particle size from concentrated titanium liquid in titanium dioxide production, and particularly relates to the technical field of titanium dioxide production. First, the concentrated titanium liquid and alkali liquid are respectively preheated to 85-95 DEG C, the concentrated titanium liquid is added into the alkali liquid, the temperature is maintained at 95-120 DEG C for reaction, the reaction time is 5-10 min, and the crystal seed is obtained when the detection of crystal seed stability reaches below 100 ml water / 10 ml titanium liquid; then the crystal seed obtained in step one is added into the concentrated titanium liquid, and the stirring, pressurizing and heating are carried out for reaction, the reaction time is 15-60 min, and the reaction is kept for maturation after the reaction is completed; finally, the titanium liquid after the reaction in step two is cooled, and metatitanic acid with stable particle size is obtained after filtration.

This invention discloses a composite modified lithium manganese oxide cathode material, its preparation method, and its applications, belonging to the field of cathode material technology. The structural formula of the composite modified lithium manganese oxide cathode material is: LiX a O b @LiYO2 / LiMn2O4, comprising: a core composed of LiYO2 and LiMn2O4, and LiX coating at least a portion of the surface of the core. a O b The coating layer; wherein: LiMn2O4 has a porous structure, and LiYO2 fills the channels of LiMn2O4. The cathode material in this invention uses lithium manganese oxide as a matrix, with LiYO2 filling the channels of the matrix, and LiX coated on the surface of the matrix. a O b Filling the pores with LiYO2 can reduce the Jahn-Teller effect of lithium manganese oxide without affecting the specific capacity of the cathode material. Moreover, LiYO2 can accelerate the lithium-ion diffusion rate, thereby improving the rate performance of the material.

The application discloses a kind of preparation methods of lead-free environmental protection Cs2TiBr6 double perovskite film, it includes the following steps: CsBr powder and TiBr4 Powder are added to beaker equipped with gamma-butyrolactone solvent and magnetically stirred to be completely dissolved, then slowly add anhydrous acetonitrile as anti-solvent and constant temperature heating is placed on heating table, after seed microcrystal precipitates, pour out solution, use acetone to flush seed microcrystal after, and dry after standing;Seed microcrystal, CsBr powder and TiBr4 Powder are added to N, N-dimethylformamide solvent, and be loaded into centrifugal tube and centrifuged, pour out supernatant after centrifugation and the precipitate is dried, obtain Cs2TiBr6 microcrystal;Cs2TiBr6 microcrystal is added to the mixed solution of cyclohexane and isopropyl alcohol with certain mass ratio, and magnetically stirred to make microcrystal fully dispersed, obtain Cs2TiBr6 precursor solution;Cs2TiBr6 precursor solution is added dropwise to substrate and spin-coated, then the substrate is placed on heating table and annealed, to obtain Cs2TiBr6 film.The advantages are that, compared with existing film preparation technology, 1) no need of thermal evaporation coating machine and double source co-evaporation process, low cost and simple process;2) will not corrode substrate material;3) the thickness of prepared Cs2TiBr6 film is 8-10 μm, suitable for use in optoelectronic devices.

This invention provides a technology for producing photocatalytic particles with high oxygen-generating activity. [Solution] A method for producing photocatalytic particles according to one aspect of the present invention is a method for producing photocatalytic particles comprising supporting a co-catalyst on photosemiconductor particles having a composition represented by the following general formula (I), comprising: an oxidation treatment step of oxidizing the photosemiconductor particles; and a co-catalyst supporting step of supporting the co-catalyst on the photosemiconductor particles after the oxidation treatment step, wherein the oxidation treatment step is performed by carrying out at least one of the following (i) and (ii): (i) oxidizing the photosemiconductor particles in an oxidizing agent solution; (ii) oxidizing the photosemiconductor particles by heating them in an oxidizing atmosphere at a temperature greater than 300°C and 450°C or less. M a Ti b O c S d …(I) (However, M is one or more combinations selected from Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Y, and is a number with a=1.7~2.3, b=2, c=4.7~5.3, and d=1.7~2.3.)

A process for producing a titanium-molybdate material is provided. The process includes a step of reacting a metal molybdenum (Mo) material in a liquid medium with a first acid to provide a Mo composition and combining the Mo composition with a titanium source to provide a Ti-Mo composition. The Ti-Mo composition can be pH adjusted with a base to precipitate a plurality of Ti-Mo particulates.

This invention relates to a method for preparing an independently supported MXenes hydrogel film, comprising the following steps: forming a wet film by vacuum filtration of an MXenes suspension; immersing a filter paper containing the wet film entirely in an acid solution, utilizing hydrated hydrogen ions to induce interlayer confined crosslinking to form a gel structure, and then separating it from the filter paper; and washing the resulting gel film with deionized water until the pH value is close to neutral to obtain an independently supported MXenes hydrogel film. This method does not require the introduction of polymers or second-phase materials, retains the intrinsic conductive network of MXenes, and the resulting gel film possesses a three-dimensional porous structure, excellent mechanical stability and conductivity, making it suitable for applications such as aqueous energy storage, electromagnetic shielding, and flexible electronic devices. It has the advantages of a green process, controllable structure, and suitability for large-scale preparation.

To provide inorganic powder including MgTiO3, which is excellent in dielectric properties and also in dispersibility into a resin, and a resin composition using the same.SOLUTION: There is provided inorganic powder including MgTiO3. An average circularity of inorganic particles included in the inorganic powder is 0.80 or more. A value of (D90-D10) / D50 in a volume-basis particle size distribution of the inorganic powder obtained by measurement with a laser diffraction / scattering particle size distribution method is more than 1.2. The D50 is preferably 1.0 to 4.5 μm.SELECTED DRAWING: Figure 1

To provide lithium titanate powder, which is used as an electrode material for an electric storage device and is excellent in maintaining electrode density, volumetric energy density, rate characteristics, initial low-temperature input characteristics, and charge rate characteristics after storage at a high temperature in a balanced manner, and provide an electrode using the same and an electric storage device.SOLUTION: Lithium titanate powder consists mainly of Li4Ti5O12, wherein aluminum (Al) is locally present on the surface of primary particles of the lithium titanate powder, the aluminum content of the lithium titanate powder is 0.2 mass%, and the following formula (I) is satisfied: log10(D90)-log10(D10)<0.8 (I) (D90 denotes a particle size at the point where the cumulative volume distribution of particle size is 90% in the particle size distribution, and D10 denotes a particle size at the point where the cumulative volume distribution of particle size is 10% in the particle size distribution).SELECTED DRAWING: None

The invention discloses a hydrophilic perovskite material and a preparation method and application thereof. The chemical formula of the hydrophilic perovskite material is AxByXz, A-site elements and B-site elements comprise K, Na, Mg, Ca, Sr, Ba, Bi, Sn, Pb, Zn, Ti, V, Cr, Mn, Fe, Co, Ni, Cu and the like, and X comprises O or OH; the surface of the hydrophilic perovskite material has hydrophilic functional groups. The invention also discloses a hydrophilic perovskite material carbon composite material, which comprises a hydrophilic perovskite material and a carbon matrix material. The invention also discloses a hydrophilic perovskite coating formed by the hydrophilic perovskite material or the hydrophilic perovskite material carbon composite material. The hydrophilic perovskite coating has a dynamic regulation effect on the surface of the zinc negative electrode, so that the ion flux is homogenized, the uniform deposition of Zn < 2 + > ions is promoted, the appearance and growth of zinc dendrites are effectively inhibited, and the cycle performance of the battery is improved.

The present disclosure relates to a solid-state battery including: an exterior portion and an insulating portion, in which at least one of the exterior portion and the insulating portion includes an oxide ceramic containing: Li; Mg; one or more elements MI selected from the group consisting of Group 4 and Group 5 elements; and one or more elements MII selected from the group consisting of transition metal elements.

This invention provides a europium ion-doped titanate compound, its preparation method, and its applications, relating to the field of rare-earth luminescent materials technology. The titanate compound provided by this invention has the chemical formula K₂Ti₆O. 13 :xEu 3+ The titanate compound is monoclinic. This was achieved through K2Ti6O... 13 Doping with an appropriate amount of Eu 3+ The presence of ions in the rare-earth phosphors, such as K2Ti6O, imparts a high color rendering index and quantum yield, significantly enhancing the luminous performance of white LEDs. 13 With excellent electrochemical performance and high conductivity, the rare earth phosphor provided by this invention can also be used in lighting, displays, photocatalysis, and energy storage. Furthermore, the preparation method provided by this invention is simple, operates under mild conditions, and is suitable for large-scale production, thus possessing broad application potential.

To provide a compound having both antiviral and photocatalytic properties, an antiviral composition, a coating material, a filter, an antiviral member, and a method for producing the compounds.SOLUTION: A compound according to the present disclosure is a compound in which some of the sodium ions of sodium trititanate are substituted with silver ions.SELECTED DRAWING: Figure 1

Disclosed herein is a battery for generating hydrogen. The battery comprises a working electrode; a reference electrode; a counter electrode; the electrolyte is sulfuric acid with the concentration of about 0.5 M; wherein the working electrode is prepared by coating a layer of ink on a glassy carbon electrode and air-drying the glassy carbon electrode; and the ink is prepared by mixing the TMD composite material decorated by platinum nanoparticles with a solution to form a mixture and carrying out ultrasonic treatment on the mixture, and the solution is composed of water, ethanol and 5% sulfonated tetrafluoroethylidene fluorinated polymer-copolymer dispersion according to a volume ratio of 4: 1: 0.1.

This invention provides a dielectric powder in which core damage to the dielectric matrix is ​​minimized. [Solution] A dielectric powder comprising: a core containing barium (Ba) and titanium (Ti); a first layer disposed on at least a portion of the core; and a second layer disposed on at least a portion of the first layer; wherein at least one of the first and second layers contains one or more first elements selected from silicon (Si) and aluminum (Al), and the first and second layers contain one or more second elements selected from tin (Sn), copper (Cu), iron (Fe), zinc (Zn), and manganese (Mn); a multilayer ceramic capacitor utilizing this; and a method for manufacturing the same.