56results about "Zirconium compounds" patented technology

To provide a zirconia-based porous material in which the change in pore size distribution due to crushing treatment is small and the decrease in specific surface area due to heating is suppressed. [Solution] A zirconia-based porous body containing 40% by mass or more of zirconia and 5% by mass or more of rare earth element oxides up to 60% by mass, satisfying all of the following conditions (1) and (2) in the pore size distribution based on the mercury intrusion method: (1) The maximum value of the peak in the range of 10 nm to less than 300 nm is 1.0 ml / g or more and 4.0 ml / g or less. (2) The pore volume in the range of 300 nm to 100,000 nm is 0.05 ml / g or more and 1.00 ml / g or less.

The application discloses a method for reducing water content and water absorption of solid electrolyte. It relates to the field of solid or semi-solid batteries. The method for reducing water content and water absorption of solid electrolyte comprises the following steps: S1, heating the solid electrolyte powder by using infrared heating mode to remove water and / or impurity organic matter adsorbed on the surface of the solid electrolyte powder; S2, making the solid electrolyte powder in a fluidized state, heating and vaporizing low-surface-energy organic matter, and making the generated organic vapor contact with the solid electrolyte powder in the fluidized state in an inert atmosphere, wherein the temperature of the solid electrolyte powder in the fluidized state is lower than that of the organic vapor. The application aims to solve the technical problem that high specific surface area inorganic solid electrolyte powder is easy to physically adsorb water in air.

This invention provides a method for preparing a lithium-rich manganese-based cathode material, comprising the following steps: D1: Lithium nitrate, manganese nitrate, nickel nitrate, and cobalt nitrate are dissolved in deionized water at a molar ratio of 1.2:0.54:0.13:0.13 to prepare a metal salt solution. 1.2 Mn 0.54 Ni 0.13 Co 0.13 O2 is co-precipitated with a precipitant and a complexing agent in a solvent to generate a lithium-rich manganese-based core; D2: The lithium-rich manganese-based core is mixed with an interfacial bridging agent in an organic solvent and stirred for 2-4 hours. After drying, an interfacial bridging agent layer is formed on the lithium-rich manganese-based core; D3: The material obtained after step S2 is mixed successively with three metal salt solutions of different concentrations, and different NCM shells are coated on the outside of the interfacial bridging agent layer; D4: After high-temperature sintering, a lithium-rich manganese-based cathode material is obtained. In this invention, the LMRO core, Li2ZrO3 bridging agent, and gradient NCM shell work synergistically to greatly enhance the inhibition of lattice oxygen migration, improve structural stability, and thus significantly improve the first-time efficiency and suppress the cumulative gas release.

This invention discloses a modified lithium lanthanum zirconium oxide material, its preparation method, and its application, relating to the field of solid electrolyte material preparation and application. The modified lithium lanthanum zirconium oxide material of this invention comprises lithium lanthanum zirconium oxide material and a TiCN / W-Cu composite material, with the TiCN / W-Cu composite material coating the outer surface of the lithium lanthanum zirconium oxide material. Coating the surface of the lithium lanthanum zirconium oxide material with the TiCN / W-Cu composite material effectively increases the ionic conductivity of the lithium lanthanum zirconium oxide material and also helps improve the material's processing performance, making it suitable as a solid electrolyte for use in lithium-ion solid-state batteries.

A solid electrolyte material according to the present disclosure includes a crystal phase that includes Li, Zr, Al and F. In an X-ray diffraction pattern for the solid electrolyte material obtained by X-ray structural analysis using Cu–Kα rays, has: at least two peaks in a first range of diffraction angles 2θ between 21.2° and 23.5°; at least two peaks in a second range of diffraction angles 2θ between 29.3° and 31.8°; and at least two peaks in a third range of diffraction angles 2θ between 37° and 40.3°.

To provide an all-solid battery in which a layer peeling and a cracking are hardly generated, and which has a high rate performance.SOLUTION: An all-solid battery 10 comprises: a positive electrode 1 having a positive-electrode active material layer 1B; a negative electrode 2 having a negative-electrode active material layer 2B; and a solid electrolyte layer 3 between the positive-electrode active material layer 1B and the negative-electrode active material layer 2B. In the case where an intermediate layer is provided on the positive electrode side, the positive-electrode active material layer 1B contains a positive electrode active material and a halide-based chemical compound, a positive electrode side intermediate layer 31 contains the positive electrode active material and the halide-based chemical compound, and a content of the halide-based chemical compound of the positive electrode side intermediate layer 31 is larger than the content of the halide-based chemical compound of the positive-electrode active material layer 1B. In the case where the intermediate layer is provided on the negative electrode side, the negative-electrode active material layer 2B contains a negative electrode active material and the halide-based chemical compound, a negative electrode side intermediate layer 32 contains a negative electrode active material and the halide-based chemical compound, and a content of the halide-based chemical compound of the negative electrode side intermediate layer 32 is larger than the content of the halide-based chemical compound of the negative-electrode active material layer 2B.SELECTED DRAWING: Figure 1

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

A method of forming a solid-state electrolyte powder includes the following steps. A zirconium compound layer is formed on an inner surface of a container. A precursor mixture is placed on the zirconium compound layer. The precursor mixture includes a first salt group and a second salt group. The first salt group includes zirconium source compound, lanthanum source compound, aluminum source compound, titanium source compound, tantalum source compound, or combinations thereof. The second salt group includes lithium source compound. An aerobic sintering process is performed to form the solid-state electrolyte powder.

The present disclosure provides an ion conductive substance containing an alkali metal element, a metal element M that is at least one of a tetravalent metal element and a pentavalent metal element, a halogen element, a divalent metal element D, and an oxygen element, having a diffraction peak with a half width of 2.0 to 10° in a range where a 2θ angle is 5 to 20° in an X-ray diffraction chart obtained by measurement using CuKα rays at 25°C, and having a content of the divalent metal element D of 2.5 to 18 mol%.

This invention belongs to the field of ceramic materials technology, specifically relating to ceramic fuse shells and their preparation method. The preparation method includes: ball milling a mixture of calcined α-alumina, borosilicate glass frit, γ-alumina, a composite grain bridging agent, a composite pore-sealing reinforcing agent, and deionized water; adjusting the pH to a neutral range; adding an aqueous solution containing polyvinyl alcohol and continuing mixing; sieving and spray drying to obtain granules; mixing with magnesium stearate and pressing into green bodies; placing the green bodies in a degreasing furnace; heating to different temperatures in stages under an air atmosphere and holding at those temperatures to complete degreasing; transferring the degreased green bodies to a sintering furnace; heating to a high temperature and holding at that temperature under a nitrogen protective atmosphere; and cooling in the furnace to obtain the finished ceramic shell. This invention, by introducing a composite grain bridging agent and a composite pore-sealing reinforcing agent, combined with staged degreasing and nitrogen atmosphere sintering, effectively improves the density, insulation performance, and bending strength of the shell, making it suitable for fuse applications.

The present invention relates to a lithium-lanthanum zirconium composite oxide solid electrolyte doped on the grain boundary and surface, and its preparation method and application. By using a stepwise doping method, some doping elements are located on the grain boundary and surface of the lithium-lanthanum zirconium composite oxide solid electrolyte, improving the distribution state of the doping elements on the grain boundary, reducing the number of grain boundaries, reducing the grain boundary resistance of the lithium-lanthanum zirconium composite oxide, and making it obtain high ionic conductivity. The doping method used has the advantages of simple process, low cost and high versatility, can meet the demand for doping elements of different solid electrolytes, and is suitable for large-scale application. The solid electrolyte obtained by adopting the technical solution of the present invention can be used in the fields of all-solid-state lithium metal or lithium ion batteries, semi-solid lithium ion batteries, lithium air batteries, etc.

To provide a zirconia-based composite oxide powder with small particle size, small pore volume, and porous properties. [Solution] The material contains zirconia and an oxide of a rare earth element, with a zirconia content of 50% to 95% by weight, and the pore distribution calculated from the scattering curve measured by small-angle X-ray scattering has a monomodal distribution in the range of 1 nm to 15 nm, and the particle size D in the particle size distribution measured by laser diffraction-scattering is 50 The particle size is between 0.05 μm and less than 1.0 μm, and the tap density is 1.0 g / cm³. 3 More than 1.7g / cm 3 The following is a zirconia-based composite oxide powder whose crystal system, as identified by powder X-ray diffraction, is either tetragonal, cubic, or both.

The present application relates to the technical field of paint, especially to a kind of low thermal conductivity, high emissivity infrared radiation paint and its preparation method and coating.The paint includes the following mass parts of raw materials: deionized water 40-60 parts, modified lanthanum zirconate powder 25-45 parts, chromium oxide powder 2.5-7.5 parts, lanthanum oxide powder 2.5-7.5, thickening agent 2-4 parts, dispersing agent 0.3-0.7 parts, defoaming agent 0.1-0.3 parts, curing agent 0.2-0.5 parts, film-forming aid 0.5-2 parts;The preparation method of the paint is to add thickening agent to deionized water according to the proportion, stir to get a uniform viscous slurry liquid, add dispersing agent, defoaming agent, curing agent, film-forming aid, modified lanthanum zirconate powder, chromium oxide powder and lanthanum oxide powder to the liquid in turn, stir and disperse, to get infrared radiation paint.The present application has the advantages of low thermal conductivity and high emissivity at the same time, with high infrared emissivity in 0.8-25 μm wave band, and good heat exchange effect.

The present application relates to a kind of composite oxides and its preparation method, positive electrode additive, positive electrode and lithium ion battery.The chemical formula of composite oxide is Li7La3Zr 2‑1.25x Nb x O 12 ·nLi2ZrO3, wherein 0.1≤x≤0.4, 2%≤n≤6%.The composite oxide of the above technical solution of the present application is based on maintaining lithium lanthanum zirconium oxygen excellent characteristics, by chemical combination lithium zirconate material, realize the composite material of electrochemical performance better than both, and solve the problem that lithium lanthanum zirconium oxygen is in air, surface layer unstable can produce the carbonic acid lithium layer of resistance value variable.In the experiment, the above composite oxide is used as positive electrode additive of lithium ion battery, and the capacity retention of lithium ion battery can be improved, which is conducive to wide application.In addition, the present application also provides a kind of preparation method of the above composite oxide, positive electrode additive comprising the above composite oxide, positive electrode comprising the above positive electrode additive and lithium ion battery comprising the above positive electrode.

To provide an oxygen storage material with a high utilization efficiency capable of developing excellent oxygen storage capacity (OSC) at a low temperature such as about 250°C, not only in a use initial period but also after exposed to a high temperature exhaust gas of such as about 1100°C for a long time.SOLUTION: An oxygen storage material containing a pyrochlore-type ceria-zirconia composite oxide to which scandium (Sc) is added, a molar fraction of Zr with respect to a total number of moles of Ce and Zr (X=Zr / (Ce+Zr)×100) is X=51.7-53.8%, in the atmosphere, before heating at 1100°C and after heating for 5 hours, a lattice constant obtained from an X-ray diffraction pattern obtained by X-ray diffraction measurement using CuKα satisfies the condition expressed by the following equation (1): the lattice constant≤-4.15×10-3X+10.733 (1), and an intensity ratio [I(14 / 29) value] of a diffraction line near 2θ=14.5° and the diffraction line near 2θ=29°[I(14 / 29) value] satisfies the following equation (2): I(14 / 29) value≤-1.00×10-3X+0.096 (2).SELECTED DRAWING: None

Methods for producing metal sulfides generally include combining an alkali metal sulfide and a metal halide in an aprotic solvent to produce a mixture that includes an alkali metal halide and a metal sulfide. Additional methods include combining a first alkali metal sulfide, a second alkali metal sulfide, and a metal halide in an aprotic solvent to produce a mixture that includes a first alkali metal halide, a second alkali metal halide, and a metal sulfide. The methods may include adding a second solvent to cause an alkali metal halide to precipitate out of the mixture and improve the purity of the metal sulfide.

Provided is an ammonia decomposition catalyst which exhibits high ammonia decomposition activity even at a low reaction temperature and a low reaction pressure, and which has stable catalytic properties such that it can be repeatedly used in reactions even after being exposed to air or water. A barium nitride of the present invention is represented by the following general formula (1): BaAN2-x (1), wherein in general formula (1), A represents at least one element selected from the group consisting of Si, Fe, Ni, Mo, and Zr, and x represents a value expressed by 0 ≤ x < 2.0.

A composition of the present disclosure includes a compound including Li and at least one selected from the group consisting of Zr, Al, and F, and a solvent. The compound is particulate and has an average particle size of less than 0.68 μm. A battery 1000 of the present disclosure includes a positive electrode 201, a negative electrode 203, and an electrolyte layer 202 provided between the positive electrode 201 and the negative electrode 203, wherein at least one selected from the group consisting of the positive electrode 201, the negative electrode 203, and the electrolyte layer 202 includes the solidified composition of the present disclosure.

The present application aims at providing a CeO2-ZrO2-based composite oxide sufficiently micronized and a method for producing the same, and a composite oxide containing a zirconium element and a cerium element and, as occasion demands, other rare earth metal elements, and having a D 50 and a D 90 of 0.5 μm or less and 1 μm or less, respectively.

A piezoelectric assembly comprises a substrate of Ni, Cu, or steel, a first oriented layer assembled on the substrate, and a piezoelectric layer on the oriented layer. The piezoelectric layer has a degree of orientation with respect to the local surface normal of 90% or more.

Methods for producing metal sulfides generally include combining an alkali metal sulfide and a metal halide in an aprotic solvent to produce a mixture that includes an alkali metal halide and a metal sulfide. Additional methods include combining a first alkali metal sulfide, a second alkali metal sulfide, and a metal halide in an aprotic solvent to produce a mixture that includes a first alkali metal halide, a second alkali metal halide, and a metal sulfide. The methods may include adding a second solvent to cause an alkali metal halide to precipitate out of the mixture and improve the purity of the metal sulfide.

To provide modified metal-organic framework (MOF) materials, methods of preparing the same, and processes using the same.SOLUTION: A modified MOF of the invention is modified by impregnating a MOF with an inorganic metal salt. The starting MOF comprises at least one linker or ligand, which comprises an aryl amino group as part of its structure. The modified MOF is able to adsorb either basic or acidic toxic industrial compounds (TICs). The modified MOF can be used to remove TICs from various gaseous streams such as air.SELECTED DRAWING: None

The present invention aims to provide a cerium oxide (CeO2)-zirconium oxide (ZrO2)-aluminum oxide (Al2O3) composite oxide having improved heat resistance and a method for producing the same, and to provide a composite oxide containing cerium element, zirconium element, aluminum element, and optionally a rare earth metal element other than cerium element, and having a specific surface area of 60 m 2 / g or more as measured by the BET method after heat treatment at 1000°C for 25 hours in the atmosphere.

The present application discloses a multi-anion doped solid electrolyte material, a preparation method, an application and a all-solid-state lithium-ion battery, which relates to the technical field of solid electrolytes. The chemical formula of the multi-anion doped solid electrolyte material is Li 2a+b+ 3c ZrCl4O a F b N c , where 0.7 < a < 1.3, 0 < b < 0.3, 0 < c < 0.3; the amorphous phase ratio of the material is ≥ 90%, and the ionic conductivity is ≥ 2.5 mS·cm ‑ ¹, and the electrochemical stability window is 2.2 - 4.2 V. The present application introduces multi-anion (O, F, N) doping into the Zr-based halide system and uses the ball milling method to achieve sufficient mixing and structural regulation, so that the Li 2a+b+ 3c ZrCl4O a F b N c solid electrolyte material doped with multi-anions improves the ionic conductivity, broadens the electrochemical stability window and the interfacial stability.

The invention provides a reaction composition for forming doped lithium lanthanum zirconium oxide, comprising one or more lithium, lanthanum and / or zirconium species for forming a doped lithium lanthanum zirconium oxide, and at least one dopant provided as a polyoxometalate. A method of making a doped lithium lanthanum zirconium oxide is also provided.

The present disclosure provides a lithium-ion battery material, a method for preparing the same, and its use. The structural formula of the lithium-ion battery material is Li4ZrF 8-2X O X where X satisfies 0 < X ≤ 0.15. The present disclosure can significantly improve the ionic conductivity of the Li4ZrF8 material by performing oxygen doping on the Li4ZrF8 material with a zirconium-containing oxide and performing oxygen doping at the F site. Li4ZrF 8-2X O X When the material is used in a lithium-ion battery, it reacts with water molecules in the electrolyte to generate hydroxyl groups, and then contributes to reducing the moisture in the electrolyte.

The present invention relates to a modified inorganic particle, the modified inorganic particle comprising: a silsesquioxane having an open structure; and an inorganic particle combined with the silsesquioxane, and the modified inorganic particle having a refractive index of 1.3 or more, and a hard coat composition comprising the modified inorganic particle and a coated film thereof.

The present application provides a composite material and a preparation method thereof, and a lithium ion battery, and belongs to the technical field of lithium batteries. A specific solution is as follows: the composite material is an oxide electrolyte coated nano-attapulgite composite material, where a coating layer of an oxide electrolyte has a thickness less than or equal to 20 µm, a rod crystal of a nano-attapulgite has a length of 100 nm-50 µm and a width of 10 nm-120 nm, and the nano-attapulgite is an organically modified natural nano-attapulgite and / or a lithium cation exchanged natural nano-attapulgite. The attapulgite coated with the oxide electrolyte has a rod-shaped fast lithium ion transmission channel at a nanometer level, which can improve a transmission of lithium ions and has good lithium ion conductivity and excellent mechanical properties.

Coating components having a layer with a composition comprising a rare earth-doped zirconium / hafnium oxide are provided. The rare earth-doped zirconium / hafnium oxide has a formula: (Ln1aLn2aLn3aLn4aLn5b)2M2O7 where each of Ln1, Ln2, Ln3, Ln4, and Ln5 is a different rare earth element such that Ln1 and M have a first atomic radius ratio that is 1.35 to 1.45, Ln2 and M have a second atomic radius ratio that is 1.35 to 1.45, Ln3 and M have a third atomic radius ratio that is 1.46 to 1.78, and Ln4 and M have a fourth radius ratio that is 1.46 to 1.78; a is 0.2 or 0.25; b is 0.2 when a is 0.2, and b is 0 when a is 0.25; and M is Zr, Hf, or a mixture thereof. Methods of forming a coating that includes this composition, along with the resulting coated components, are also provided.