191results about "Titanium compounds" patented technology

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 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.

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.

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.)

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.

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.

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.

Provided is a solid-state battery which has more sufficiently excellent low-temperature densification characteristics and moisture resistance. The present invention relates to a solid-state battery having an outer packaging part and an insulating part, in which at least one of the outer packaging part and the insulating part contains an oxide ceramic, and the oxide ceramic contains: Li (lithium); mg (magnesium); 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.

Disclosed is a method for preparing porous adsorbent material (22), the method comprising providing a mixture of metakaolin (10) and calcium titanate (12, CaTiO3), mixing the mixture with alkali solution (14) and reacting to obtain alkali-activated modified material (16), providing oil comprising oleic acid (18) as a foaming agent to the alkali-activated modified material (16), and providing hydrogen peroxide (20) as a foaming agent to the alkali-activated modified material (16), and allowing the alkali-activated modified material to foam in the presence of the hydrogen peroxide to obtain porous adsorbent material (22) comprising alkali-activated titanate-modified metakaolin. Also disclosed is porous adsorbent material comprising alkali-activated titanate-modified metakaolin, a flow- through column (24) comprising the porous adsorbent material and system for treating contaminated water.

This invention relates to a method for preparing nano metal oxides and its use. The preparation method involves reacting a low-purity initial alloy containing the target metal element M and Al / Zn with a heated concentrated alkaline solution. Under specific reaction conditions, the initial alloy undergoes intense hydrogen evolution and Al / Zn-removal reaction, resulting in nanoscale fragmentation, followed by shape and composition reconstruction to form nano M oxides. Through further post-treatment, crystalline nano M oxides or modified nano M oxides can be obtained. This method is simple, fast, cost-effective, and suitable for large-scale production. It enables the preparation of nano metal oxides with various crystallinities, which have promising applications in fields including composite materials, catalytic materials, ceramic materials, refractory materials, advanced electronic materials, battery materials, chromogenic materials, wave-absorbing materials, wastewater degradation materials, antimicrobial materials, coatings, pigments, thermal spray materials, and sensors.

To provide dielectric material and a multilayer ceramic electronic component having a high dielectric constant and excellent withstanding voltage characteristics.SOLUTION: An dielectric according to one embodiment of the invention includes: a main component represented by (Ba1-XCaX)(Ti1-y(Zr,Sn,Hf)y)O3 (wherein 0≤X≤1, 0≤y≤0.5); a first subcomponent including one or more of Y, Dy, Ho, Er, Gd, Ce, Nd, Sm, Nb, Tb, Eu, Tm, La, Lu and Yb; a second sub-component including Si and / or Al; and a third sub-component including Ba and / or Ca.SELECTED DRAWING: Figure 4

The invention provides a ternary positive electrode material, a preparation method thereof and an electrochemical device. The ternary positive electrode material comprises a base material and a composite coating layer located on the outer layer of the base material, the base material comprises a ternary active substance, the composite coating layer contains Li2TiO3 and potassium-doped lithium tungsten bronze, the potassium-doped lithium tungsten bronze is a non-stoichiometric ratio compound, and the particle crushing index IC of the ternary positive electrode material meets the condition that IC is larger than or equal to 0 and smaller than or equal to 0.40. The composite coating layer of the ternary positive electrode material can improve the lithium ion conductivity of the ternary positive electrode material, can effectively relieve and disperse the stress on particles on a positive electrode plate in the charging and discharging process of a lithium battery using the ternary positive electrode material, and reduces the risk that the particles of the ternary positive electrode material are broken in the use process of the lithium battery; and the lithium battery has excellent storage performance.

To provide a ceramic electrode material made of barium titanate, a ceramic capacitor using the same, and a method for manufacturing the same. [Solution] The ceramic electrode material of the present invention is made of barium titanate having oxygen vacancies and having a cubic crystal structure in a temperature range of at least 300K to 400K. The method for producing the ceramic electrode material made of oxygen-vacant barium titanate of the present invention includes annealing a barium titanate raw material having a stoichiometric composition in a vacuum in the presence of a Group 2 element metal.

A mixed metal oxide nanocomposite comprises magnesium, titanium, boron, and oxygen. The nanocomposite comprises a first phase of magnesium titanium oxide (MgTi2O5) and a second phase of magnesium borate (Mg3B2O6). The first phase and the second phase are present as a homogeneous mixture within the nanocomposite and exhibit an orthorhombic crystal system. The nanocomposite is mesoporous with a mean pore diameter of 5 to 10 nm.

A dielectric material, a multilayer ceramic capacitor using the dielectric material, and a method for preparing the dielectric material are provided. The dielectric material comprises: a core comprising 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 layer and the second layer comprises at least one first element selected from silicon (Si) and aluminum (Al), and the first layer and the second layer comprise at least one second element selected from tin (Sn), copper (Cu), iron (Fe), zinc (Zn), and manganese (Mn).

This provides a new material that exhibits negative thermal expansion. [Solution] The negative thermal expansion material is Ti (3) 2-x M x O3(M contains at least one element selected from Mg, Al, Si, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, Zr, Nb, Mo, Ag, In, Sn, Sb, La, Ta, W, Bi, 0

The invention relates to an in-situ endogenous doped nano-porous composite powder material as well as a preparation method and application thereof. The powder material has two-stage composite characteristics, and comprises the following steps: firstly, carrying out first-stage composite on a nano-porous carrier of in-situ endogenous doped E1 element to form a nano-porous main body component of in-situ endogenous doped E1 element; and then carrying out secondary compounding on the in-situ ectogenesis doped E2 component and the in-situ endogenesis doped E1 element nano-porous main body component. The preparation method of the in-situ endogenous doped nano-porous composite powder material has the characteristics of simple process, easiness in operation, high efficiency and low cost, and has a good application prospect in the fields of composite materials, ceramic materials, photocatalytic materials, hydrophobic materials, sewage degradation materials, sterilization materials, electronic materials, coatings and the like.

This invention discloses a Na2Ti7O 15 Na₂Ti₃O₇ sodium titanate electrode material, its preparation method, and its application. This electrode material is a porous, blocky structure composed of stacked nanorods. It is synthesized by a simple solid-state method, where sodium carbonate precursor and anatase titanium dioxide are ball-milled in a specific ratio and then microwave-sintered in air. 15 The addition of [a specific ingredient] increases the exposure of the (100) sodium storage crystal face in Na2Ti3O7 sodium titanate, while decreasing the exposure of the (003) crystal face; Na2Ti7O 15 The presence of four TiO6 octahedrons within a single structural unit increases the number of sodium storage sites and widens the sodium ion diffusion channels, thereby improving the material's specific capacity and rate performance. (Na2Ti7O) 15 The two layers of TiO6 octahedrons are interconnected, making the structure more stable during sodium ion insertion / extraction, thereby increasing the long-term cycling stability of the material.

Nanoparticles made of a metal oxide are heated to a temperature of from 70°C to less than 350°C. Graphene quantum dots are deposited on the surface of the nanoparticles made of a metal oxide by bringing a carbon-containing compound into contact with the nanoparticles made of a metal oxide while maintaining this heated state, thereby forming graphene-nanoparticle composites having the nanoparticles made of a metal oxide and graphene quantum dots deposited thereon.