151results about "Ruthenium/rhodium/palladium/osmium/iridium/platinum oxides/hydroxides" patented technology

The present invention provides an improved supercapacitor-like electronic battery comprising a conventional electrochemical capacitor structure. A first nanocomposite electrode and a second electrode and an electrolyte are positioned within the conventional electrochemical capacitor structure. The electrolyte separates the nanocomposite electrode and the second electrode. The first nanocomposite electrode has first conductive core-shell nanoparticles in a first electrolyte matrix. A first current collector is in communication with the nanocomposite electrode and a second current collector is in communication with the second electrode. Also provided is an electrostatic capacitor-like electronic battery comprising a high dielectric-strength matrix separating a first electrode from a second electrode and, dispersed in said high-dielectric strength matrix, a plurality of core-shell nanoparticles, each of said core-shell nanoparticles having a conductive core and an insulating shell.

The present invention aims at: providing an accelerated reaction in a liquid-phase reaction; forming, by way of the reaction, a metal oxide nanoparticle and carbon that carries the metal oxide nanoparticle in a highly dispersed state; and providing an electrode containing the carbon and an electrochemical device using the electrode. In order to solve the above-mentioned problem, shear stress and centrifugal force are applied to the reactant in the rotating reactor so that an accelerated chemical reaction is attained in the course of the reaction. Further, the carbon carrying a metal oxide nanoparticle in a highly dispersed state comprises: a metal oxide nanoparticle produced by the accelerated chemical reaction, wherein shear stress and centrifugal force are applied to a reactant in a rotating reactor in the course of the reaction; and carbon dispersed in the rotating reactor by applying shear stress and centrifugal force. An electrochemical device produced by using the carbon carrying the metal oxide nanoparticle as an electrode has high output and high capacity characteristics.

Provided are: a ruthenium oxide powder which is produced, at low cost, as a material for electronic components such as a chip resistor, a hybrid IC and a resistive network each having a sufficient performance, even if the ruthenium content thereof is low; a composition for thick film resistor elements, which uses the ruthenium oxide powder; and a thick film resistor element. Specifically provided are: a ruthenium oxide (RuO2) powder having a rutile crystal structure, which is characterized in that the crystallite diameter of the (110) plane as determined by an X-ray diffraction method is 3-10 nm and the Ru content is 73% by mass or more; a composition for thick film resistor elements, which is obtained by blending a glass powder and conductive particles that are formed of the ruthenium oxide powder as main constituent elements; and a thick resistor element paste, which is obtained by dispersing the composition for thick film resistor elements in an organic vehicle that contains a fatty acid, and which is characterized in that the content of the fatty acid is 0.1-10 parts by weight per 100 parts by weight of the ruthenium oxide.

Compositions and processes are disclosed for removing sulfur and sulfur compounds from hydrocarbon fuel feedstocks. The feedstock is contacted with a regenerable sorbent such as a compound of the formula Ti_xCe_yO₂ where 0<x/y≦1 and where 0<x≦1 and 0<y≦1 capable of selectively adsorbing sulfur compounds present in the hydrocarbon feedstock at about 0° C. to about 100° C. such as at about 25° C.

An electrode material composed of hydrous metal oxide, such as ruthenium oxide, is annealed up to temperature just below the temperature at which the hydrous metal oxide would crystallize. Therefore, the hydrous metal oxide remains amorphous or non-crystalline. A hydrous metal oxide material treated in this manner provides a charge storage capacity and energy density greater than 747 F/g and 92 joules/gram, respectively, over 1 V range in a sulfuric acid electrolyte. This invention also provides a method of material preparation, wherein a sol-gel process is used to fabricate the hydrous metal oxides and wherein commercially available hydrous ruthenium oxide powders are treated and annealed.

The invention discloses a preparation method of nano ruthenium oxide. The preparation method comprises following steps: a ruthenium source solution is mixed with alkali liquor, and a precursor solution with pH being 9-12 is obtained; the precursor solution is subjected to a hydrothermal reaction or calcined, and nano ruthenium oxide is obtained. Prepared nano ruthenium oxide particles are controllable in morphology, that is, the nano ruthenium oxide particles are of a regular spherical structure or rod-like structure. The preparation method is simple, green and environmentally friendly and facilitates industrialization, the raw material cost is relatively low, prepared products have better performance, and the preparation method has good application prospect.

An electrical conductor including:

• • a first conductive layer including a plurality of metal nanowires; and
  • a second conductive layer disposed on a surface of the first conductive layer, wherein the second conductive layer includes a plurality of metal oxide nanosheets,
  • wherein in the first conductive layer, a metal nanowire of the plurality of metal nanowires contacts at least two metal oxide nanosheets of the plurality of metal oxide nanosheets, and
  • wherein the plurality of metal oxide nanosheets includes an electrical connection between contacting metal oxide nanosheets.

A nanorod and a method of manufacturing the same are disclosed, and a nanorod including a ZnO nanorod; and a coating layer disposed on a ZnO surface and including RuO₂ nanoparticles are disclosed concretely.

The invention relates to a class of metal oxide materials with a special microstructure, and a preparation method thereof, and belongs to the field of materials. A purpose of the present invention isto solve the problem of large-scale and low-cost production of high-performance metal oxides for energy storage and catalysis. According to the present invention, a multi-component metal oxide AxMyOz(A represents one or a plurality of elements selected from elements with strong metallicity, M represents one or a plurality of elements selected from transition metal elements or germanium, antimony,indium and other elements with weak metallicity, and O represents oxygen) is used as a raw material, and is subjected to A site element removing through etching with an acidic solution (an aqueous solution or organic solution with a pH value of less than 7) to prepare the metal oxide material, wherein a variety of microstructures such as an amorphous porous material, a mono-dispersed nano-crystalmaterial, a self-assembled nanometer hairball-like material, a porous nano-crystal material, a hollow material, a core-shell structure material and the like can be obtained by controlling experimental conditions. According to the present invention, the method is simple and effective, and does not require complicated post-treatment process, and the product can be widely used in the fields of industrial reaction catalysts or catalyst carriers and new energy.

The invention relates to a preparation method of a RuO2 material with an ordered porous structure. A SiO2 nanosphere with the length of 10 to 300 nm is placed in water in a static state for evaporation induced self-assembly to form a block body with an ordered and close packing structure; after annealing with the temperature of 600 to 1000 DEG C in air, a hard template is formed; the hard template is placed in a culture dish and a soluble Ru salt solution is added; annealing is carried out with the temperature of 300 to 600 DEG C in air; gaps in the template are filled with RuO2 and multi-times repeated filling is carried out; and the SiO2 template is removed by an HF or NaOH solution and deionized water is used for cleaning and drying, thereby obtaining an ordered porous RuO2 material.

The invention relates to polyoxometalates represented by the formula (A_n)^m+[R₂(H₂O)₆X₂W₂₀O₇₀]^m− or solvates thereof, wherein A represents a cation, n is the number of the cations, m is the charge of the polyoxoanion, and X represents a heteroatom selected from Sb^III, Bi^III, As^III, Se^IV and Te^IV, a process for their preparation and their use for the catalytic oxidation of organic molecules.

The invention provides a porous IrO2 oxygen evolution catalyst with a super-high specific surface area and a preparation method of the porous IrO2 oxygen evolution catalyst, and relates to the field of electrochemistry. The method comprises the following steps: firstly, a H2IrCl6.6H2O precursor is added to deionized water, and a first solution is obtained; then NH3.H2O is added to the first solution for a reaction, and a second solution is obtained; NaNO3 is added to the second solution for a reaction, and a third solution is obtained; finally, a solvent in the third solution is evaporated to dryness, a product is ignited in the air, and the IrO2 oxygen evolution catalyst is obtained. The invention further provides the IrO2 oxygen evolution catalyst prepared with the method. The IrO2 oxygen evolution catalyst has a porous structure and the super-high specific surface area and shows excellent oxygen evolution catalytic performance.

Disclosed herein is an article having: a substrate and a RuO₂ coating having nanoparticles of RuO₂. Also disclosed herein is an article having: a substrate and a RuO₂ coating. The coating is made by: immersing the substrate in a solution of RuO₄ and a nonpolar solvent at a temperature that is below the temperature at which RuO₄ decomposes to RuO₂ and warming the substrate and solution to ambient temperature under ambient conditions to cause the formation of the coating.

A composite material structure including a matrix material layer; and a plurality of one-dimensional nanostructure distributed in the matrix material layer and having an electrical conductivity which is greater than an electrical conductivity of the matrix material layer, wherein the plurality of one-dimensional nanostructures includes a first one-dimensional nanostructure and a second one-dimensional nanostructure in contact with each other.

The invention discloses a preparation method and application of an iridium oxide nanoparticle catalyst. A mixed solution containing a polymer and an iridium-containing compound is uniformly applied toa treated conductive substrate; calcining in an air atmosphere is carried out to convert the iridium-containing compound into iridium oxide and the polymer is decomposed at the same time; the iridiumoxide nanoparticle material which is small in particle size, amorphous and of a porous structure is obtained, polymers remaining on the iridium oxide nanoparticle material are removed through a plasma generator, and the surfaces of iridium oxide nanoparticles are rich in hydroxyl. The film formed by the polymer in the mixed solution is utilized to solve the problem that the iridium-containing compound is agglomerated to form large particles when being calcined to generate the iridium oxide nanoparticles, thereby obtaining the small-particle-size iridium oxide nanoparticles. Besides, the plasma generator is used for removing residual polymers in the calcining process, the contact area of the iridium oxide nano particles is increased, and therefore the catalytic efficiency of the iridium oxide nano particles is improved.

Methods and apparatus for the recycling and purification of an inorganic metallic precursor. A first gaseous stream containing ruthenium tetroxide is provided, and transformed into a solid phase lower ruthenium oxide. This lower phase ruthenium oxide is reduced with hydrogen to form ruthenium metal. The ruthenium metal is contacted with an oxidizing mixture to produce a stream containing ruthenium tetroxide, and any remaining oxidizing compounds are removed from this stream through a distillation.

A mixture contains metal oxide particles that are coated with an organic compound. The mixture may be used to connect components and/or to produce a module. A method for producing the mixture is also provided.