13 results about "Ni oxide" patented technology

Provided are a dielectric powder composition for multilayer ceramic capacitors. The dielectric powder composition includes 93 to 98.5 wt % of a main ingredient composed of dielectric base material powder, 1.0 to 5.0 wt % of a first sub-ingredient including glass powder coated on an outer periphery of the dielectric base material powder to form a core-shell structure, and 0.5 to 2.0 wt % of a second sub-ingredient made of a transition metal oxide mixed with the core-shell structure powder, wherein the main ingredient is non-stoichiometrically represented as [(BaxCaySr1-x-y)O]m[(TizZr1-z)O2](where x: 0.22 to 0.42, y: 0.10 to 0.35, z: 0.03 to 0.08, and m ranges from 0.85 to 1.05), the first sub-ingredient includes an alkaline earth metal compound including (Ba, Sr, Ca), SnO2, B2O3 and SiO2, and the second sub-ingredient includes at least two selected from the group consisting of manganese oxide (Mn3O4), tungsten oxide (WO3), and aluminum oxide (Al2O3).

[Problem] To provide coated particles that, when used as a positive electrode active material for a non-aqueous electrolyte secondary battery, allow a non-aqueous electrolyte secondary battery in which these particles are used to exhibit excellent charge / discharge capacity and cycle characteristics. Coated particles according to the present disclosure have: a lithium metal composite oxide containing at least lithium and nickel in the form of primary particles or secondary particles; a first layer containing nickel (II) oxide on at least a part of the surface of the lithium metal composite oxide; and a second layer comprising an oxide on at least a portion of a surface of the first layer, the oxide containing lithium and one or more selected from the group consisting of boron, phosphorus, and sulfur.

Disclosed is an engineered coating material decorated on a conductive carbon, comprising: a coating material disposed on a surface of the conductive carbon with a partial coverage or full coverage, wherein the coating material comprises at least one material selected from a group comprising: AlOx, TiOx, SnOx, ZnOx, NbOx, TiNbxOy, AlPxOy, MgOx, LiNbxOy, BOx, CeOx, LiAlxOy, Sn(PO4)x, ZrOx, MgAlxOy, SiOx, NiOx, Pt, Pd, Ir, RuxOy, CeZrxOy, BiOx, TiNx, ZnO, ZnS, MnO2, NbO2, VS2, TiS2, CoS2, and Al2O3.

This invention discloses a liquid-liquid doping preparation method for molybdenum oxide-based composite targets. The disclosed method includes heating an ammonium molybdate solution with pH=6-6.5 to 60°C, adding an external dopant to the ammonium molybdate solution while stirring, then adding ammonia water to adjust the pH value to approximately 8.0, followed by rapid cooling to below -10°C while stirring; filtering and drying the crystals containing nickel hydroxide / tantalum hydroxide / niobium hydroxide that crystallize out during cooling, and then performing in-situ decomposition hot pressing sintering under a protected atmosphere to obtain a high-density molybdenum oxide-based composite target doped with Ni, Ta, and Nb oxides. The preparation method of this invention can prepare molybdenum oxide-based composite targets doped with Ni oxide, Ta oxide, and Nb oxides with uniform composition and good material conductivity.

The application discloses in-situ grown Cu-Ni alloy nanowires and a preparation method thereof. The preparation method of the Cu-Ni alloy nanowires comprises the following steps: S1, carbon paper is immersed into a mixed solution of CuSO4, NiCl2 and NiSO4 for electrodeposition to obtain a Cu-Ni film; S2, the Cu-Ni film is reacted under alkaline conditions to obtain Cu-Ni hydroxide nanowires; S3, the Cu-Ni hydroxide nanowires are annealed to obtain Cu-Ni oxide nanowires; and S4, the Cu-Ni oxide nanowires are electrochemically reduced to obtain in-situ grown Cu-Ni alloy nanowires. The method can in-situ grow Cu-Ni alloy nanowires on carbon paper as a gas diffusion electrode, can electrochemically reduce CO2 to prepare C2H4, the faradic efficiency (FE) of producing C2H4 reaches 46.98%, and the current density reaches 231.81 mA / cm 2 2, which is obviously higher than that of bare copper nanowires (Cu NWs, 25.33%). The Cu-Ni alloy nanowires are in-situ constructed on carbon paper, and exhibit excellent stability, and can run for more than 8 hours under a large current.

The invention relates to an integral structural ammonia decomposition catalyst based on a metal honeycomb carrier as well as a preparation method and application of the integral structural ammonia decomposition catalyst. The preparation method comprises the following steps: firstly, soaking a nickel-containing metal honeycomb carrier in an acid solution to remove surface oxides; then, nickel on the surface of the nickel oxide is oxidized in an oxidizing atmosphere to generate nickel oxide; reducing nickel oxide in a hydrogen reducing atmosphere to form a compact metal nickel film layer on the surface of the carrier; then active metal components and auxiliary metal salt are prepared into mixed slurry, and the mixed slurry is loaded on the carrier; and finally roasting to obtain the monolithic catalyst. A compact nickel protection layer is formed on the surface of the metal carrier through oxidation-reduction treatment, so that chemical reaction between ammonia molecules and carrier bulk phase atoms can be effectively blocked, the corrosion resistance of the catalyst is remarkably improved, and the service life of the catalyst is remarkably prolonged. The obtained catalyst is suitable for ammonia decomposition reaction under the conditions of high space velocity and high ammonia concentration.

The piezoelectric laminate and the piezoelectric element have, on a substrate in the following order, a lower electrode layer and a piezoelectric film containing a perovskite-type oxide, in which the lower electrode layer includes the metal layer containing Ni and a surface layer containing a Ni oxide or a Ni oxynitride, and in the lower electrode layer, the surface layer is arranged on the side closest to the piezoelectric film.

The invention discloses a composite oxide hydrogenation catalyst and a preparation method thereof. On the basis of the weight of the catalyst, the total content of W, Mo and Ni oxides is 45%-85%, and the content of Al2O3 is 15%-55%; the pore volume of pores with the diameter of 8-15 nm of the catalyst accounts for 39%-49% of the total pore volume, and the pore volume of pores with the diameter of 30-35 nm accounts for 40%-50% of the total pore volume. The number of particles with the particle size of 20-30 nm of the catalyst accounts for 84%-93% of the total number of particles. The preparation method comprises the following steps: (1) carrying out parallel flow gel formation on a solution containing W, Ni, Mo and Al and a precipitator to obtain slurry, aging a part of the slurry to obtain aged slurry, and mixing the aged slurry with the other part of slurry which is not aged; (2) aging the mixed slurry, adding a W-containing solution in the aging process, carrying out solid-liquid separation to obtain a solid-phase material, carrying out carbon dioxide purging, and washing with water at different temperatures; and (3) preparing the washed material into the composite oxide hydrogenation catalyst. The catalyst provided by the invention is suitable for treating inferior diesel fractions with high aromatic hydrocarbon content and high processing difficulty, and has excellent hydrogenation saturation performance.

Disclosed is an engineered coating material decorated on a conductive carbon, comprising: a coating material disposed on a surface of the conductive carbon with a partial coverage or full coverage, wherein the coating material comprises at least one material selected from a group comprising: AlOx, TiOx, SnOx, ZnOx, NbOx, TiNbxOy, AlPxOy, MgOx, LiNbxOy, BOx, CeOx, LiAlxOy, Sn(PO4)x, ZrOx, MgAlxOy, SiOx, NiOx, Pt, Pd, Ir, RuxOy, CeZrxOy, BiOx, TiNx, ZnO, ZnS, MnO2, NbO2, VS2, TiS2, CoS2, and Al2O3.

The invention relates to the technical field of aluminum-iron plated steel plates, in particular to a high-temperature-oxidation-resistant aluminum-iron alloying plated steel plate and a manufacturing method and application of the high-temperature-oxidation-resistant aluminum-iron alloying plated steel plate. The aluminum-iron alloying coated steel plate comprises a substrate, a diffusion layer, an Al-Fe phase, an Al-Fe-Si phase and a composite oxide film multi-layer structure of Al2O3 + Cr and / or Ni oxide, an aluminum-silicon alloy coating is formed on the surface of the substrate through hot dipping, and then the aluminum-silicon alloy coating is converted into an aluminum-iron alloy coating after alloying annealing and Fe element diffusion; the total thickness of the aluminum-iron alloy coating is 6-45 microns, the thickness of the diffusion layer is 1-10 microns, the thickness of the Al2O3 + Cr and / or Ni oxide composite oxide film is 0.2-1.2 microns, the Al-Fe-Si phase accounts for 10%-40% of the sectional area of the aluminum-iron alloy coating, the rest is the Al-Fe phase, and the surface of the aluminum-iron alloy coating is black. The oxidation resistance of the plating layer at the high temperature is improved.

This invention discloses a catalyst, its manufacturing method and use, and a method for methane-carbon dioxide reforming. The catalyst comprises an active matrix and CeO2, the active matrix comprising a La-Ni oxide having a perovskite structure. X-ray diffraction measurements show that the catalyst has diffraction peaks at 2θ positions of 32.7±0.3°, 31.3±0.3°, and 28.0±0.3°. Measurement by H2-TPR shows that the catalyst has at least one reduction peak below 400°C, and the CeO2 content is 1-20 wt% relative to the total amount of the catalyst. The catalyst has relatively high activity and stability, can effectively enhance CO2 adsorption during the reaction, can reduce CH4 adsorption and cracking, and has excellent carbon deposition resistance.