91 results about "Nickel oxide" patented technology

A process for producing C2 to C5 hydrocarbons, the process comprising introducing a feed stream comprising hydrogen and a carbon-containing gas selected from the group consisting of carbon monoxide, carbon dioxide, and mixtures thereof into a reaction zone of a reactor, and converting the feed stream into a product stream comprising C2 to C5 hydrocarbons in the presence of a shaped mixed catalyst in the reaction zone. The shaped mixed catalyst comprises a metal oxide catalyst component comprising nickel oxide, gallium oxide, and zirconium oxide; a microporous catalyst component is a molecular sieve having 8-MR (member ring) pore openings; and wherein the mixed catalyst is reduced in a hydrogen-containing atmosphere at a temperature of 450°C to 750°C.

This utility model belongs to the field of nickel oxide-based target material processing equipment, specifically relating to a sintering and forming device for preparing nickel oxide-based targets. It includes a high-temperature box furnace, with an inner wall suction plate fixedly connected to the front side of the inner wall of the furnace. A suction fan is fixedly connected to the top of the front side of the furnace, with its input end penetrating into the interior of the furnace and communicating with the interior of the inner wall suction plate. A sealing plate is installed inside the inner wall suction plate, and a control column is fixedly connected to the front side of the sealing plate. The front side of the control column extends into the front side of the furnace, and a fixing mechanism is engaged at the top of the control column. This utility model, by adding a suction plate, suction fan, sealing plate, control column, and fixing mechanism to the high-temperature box furnace, achieves efficient control of the gas inside the furnace. The suction fan, in conjunction with the inner wall suction plate, can promptly discharge harmful or excess gases from the furnace, ensuring the stability of the sintering environment.

This invention discloses a nickel or nickel oxide-supported cerium dioxide-doped lithium aluminum hydride hydrogen storage material, prepared by mechanical ball milling of a supported sample and lithium aluminum hydride. The supported sample is obtained by calcining a precipitate formed by mixing nickel nitrate as the nickel source and cerium nitrate as the cerium source with sodium hydroxide solution in a certain weight ratio and heating. The supported sample is either nickel-supported cerium dioxide or nickel oxide-supported cerium dioxide, named Ni@CeO2 and NiO@CeO2, respectively. The preparation method includes: step 1) preparation of nickel or nickel oxide-supported cerium dioxide; step 2) preparation of the nickel or nickel oxide-supported cerium dioxide-doped lithium aluminum hydride hydrogen storage material. For application in the field of hydrogen storage, the final system's hydrogen release temperature is reduced to 63.9 to 93.5℃, the hydrogen release amount reaches 6.7 to 7.1 wt%, and the hydrogen release rate is 88.94 to 96.03%. This invention achieves improved hydrogen storage material performance at lower temperatures.

A lithium-ion battery and an electric device. The lithium-ion battery comprises a positive electrode sheet and an electrolyte. An active material in the positive electrode sheet comprises a lithium phosphate positive electrode material and lithium nickel cobalt manganese oxide. The electrolyte comprises a positive electrode film-forming agent, a negative electrode film-forming agent and a lithium salt, wherein the lithium salt includes lithium hexafluorophosphate and lithium bisfluorosulfonylimide. The lithium-ion battery satisfies the following equation: 0.1≤(I)≤0.59, where NL is the mass ratio of lithium nickel cobalt manganese oxide to the lithium phosphate positive electrode material, Salt is the numerical value of the sum of the molar concentrations of lithium hexafluorophosphate and lithium bisfluorosulfonylimide in the electrolyte with the unit being mol / L, and Add is the mass ratio of the positive electrode film-forming agent to the negative electrode film-forming agent.

This invention belongs to the field of secondary utilization technology of metal resources, specifically relating to a method for treating waste liquid from electroplating zinc-nickel alloys. The method includes the following steps: S1, mixing the waste liquid from electroplating zinc-nickel alloys, oxygen, and a catalyst, and performing an oxidation reaction to obtain an intermediate liquid and nitrogen; the oxidation reaction temperature is ≥220℃; S2, adjusting the pH of the intermediate liquid to 13.0-13.5, performing a first filtration separation to obtain nickel hydroxide sludge and filtrate 1; S3, adjusting the pH of filtrate 1, performing a second filtration separation to obtain zinc hydroxide sludge and filtrate 2. This invention first degrades COD to obtain zinc and nickel ions; adjusting a specific pH value generates nickel hydroxide sludge, with zinc ions existing in the system as polyhydroxy zinc anions, achieving separation of nickel and zinc; further adjusting the pH separates zinc from the system as zinc hydroxide sludge precipitate. The operation is simple, with high separation efficiency and high purity.

Various embodiments herein relate to electrochromic devices and electrochromic device precursors, as well as methods and apparatus for fabricating such electrochromic devices and electrochromic device precursors. In certain embodiments, the electrochromic device or precursor may include one or more particular materials such as a particular electrochromic material and / or a particular counter electrode material. In various implementations, the electrochromic material includes tungsten molybdenum oxide. In these or other implementation, the counter electrode material may include nickel tungsten oxide, nickel tungsten tantalum oxide, nickel tungsten niobium oxide, nickel tungsten tin oxide, or another material.

A gallium oxide heterojunction-based DUV sensor includes an n-type gallium oxide substrate, an n-type gallium oxide epitaxial layer epitaxially grown on the n-type gallium oxide substrate, a p-type nickel oxide layer formed on the n-type gallium oxide epitaxial layer and forming a pn heterojunction with the n-type gallium oxide epitaxial layer, a patterned top electrode formed on the p-type nickel oxide layer, and a bottom electrode formed below the n-type gallium oxide substrate.

This invention provides a one-dimensional silver nanostructure / metal hydroxide composite material, its preparation method, and its application. The preparation method includes: adding a one-dimensional silver nanostructure, a metal salt, and an additive to a solvent and stirring to disperse them evenly; adding an acidic or alkaline reagent under stirring conditions to adjust the pH of the solution, causing the metal ions in the solution to convert into metal hydroxide precipitates, obtaining a one-dimensional silver nanostructure-metal hydroxide suspension; then performing solid-liquid separation, washing and drying the obtained solid product to obtain a one-dimensional silver nanostructure / metal hydroxide composite powder; wherein the metal hydroxide is aluminum hydroxide, zinc hydroxide, magnesium hydroxide, iron hydroxide, manganese hydroxide, copper hydroxide, nickel hydroxide, or cobalt hydroxide, and the one-dimensional silver nanostructure is silver nanowire or silver nanoribbon. The resulting composite material uses metal hydroxide as a carrier and separator, inhibiting the drying and agglomeration of silver nanowires from the source, exhibiting high conductivity and good redispersibility, thus improving conductivity.

Provided is a magnetoresistive storage device based on a topological spin material. The magnetoresistive storage device comprises: a spin-orbit coupling layer, which is made of a topological insulator and used for generating a spin current; a nickel oxide layer, which is formed on the spin-orbit coupling layer; an interface layer, which is formed on the nickel oxide layer; and a magnetic tunnel junction, which is formed on the interface layer and comprises ferromagnetic layers that are formed on the upper and lower sides of a barrier layer. The spin current is transmitted in the nickel oxide layer in the form of magnons and then acts on the ferromagnetic layers, and the interface layer is used for enhancing the anisotropy of the ferromagnetic layers.

To provide a catalyst material and a filter material using the same, which achieves precise dispersion of metals at the single-atom level using a simplified process, possesses high catalytic activity, and improves catalytic efficiency. [Solution] The catalyst comprises a carrier, a first transient metal, and a second transient metal, wherein the first transient metal and the second transient metal are each supported on the carrier in the form of single atoms, the carrier is selected from the group consisting of iron nickel oxide, silicon aluminum oxide, aluminum oxide, and titanium oxide, the first transient metal is Fe, Cu, Ir, or Pt, and the second transient metal is Pd, Ni, or Co, when the catalyst material is 100 wt%, the sum of the weight percentages of the first transient metal and the second transient metal is between 0.2 wt% and 2.5 wt%, and when the sum of the mole fractions of the second transient metal and the first transient metal is 100%, the mole fraction of the second transient metal is 1 to 2 times the mole fraction of the first transient metal.

This invention belongs to the field of semiconductor technology, specifically providing a gallium oxide insulated-gate bipolar transistor (IGBT) power device, including a vertical device and a horizontal device. This invention uses nickel oxide, copper oxide, or diamond as the P-type region, forming a heterojunction structure with N-type gallium oxide. During device operation, the heterojunction on the high-potential side is forward-biased, allowing a large number of holes to be injected into the N-type gallium oxide drift region. This introduces a conductivity modulation effect in the drift region, achieving high current density and low on-state voltage drop, thus realizing the basic working principle of the IGBT device. Simultaneously, the horizontal IGBT introduces P-type nickel oxide or diamond with N-type gallium oxide to form a superjunction structure with a high-voltage drift region, achieving higher breakdown voltage with the same drift region length, thus improving device performance. In summary, this invention, based on the principle of heterojunction, proposes the concept of gallium oxide IGBT for the first time, providing a new approach for the research of gallium oxide high-voltage, high-current power devices.

This invention discloses a method for improving the electrical stability of nickel oxide thin films. Increasing the deposition temperature of the nickel oxide film and combining it with a post-deposition oxygen plasma surface treatment process can effectively suppress the degradation of the conductivity of the nickel oxide film. The concentration of conductive holes in nickel oxide films decreases sharply with the post-deposition storage time, leading to a significant increase in film resistivity and a substantial reduction in the reliability of devices based on this film. In this invention, by increasing the deposition temperature of the nickel oxide film, its crystallinity and structural stability are improved; and by treating the film surface with oxygen plasma, intrinsic point defects within the film are stabilized and the film surface is effectively passivated. Combining these two methods stabilizes the core source of conductive holes in the nickel oxide film—intrinsic point defects—and fundamentally suppresses the degradation of its electrical properties. This technology provides an effective way to solve the problem of poor electrical stability of nickel oxide films and has the significant advantages of low equipment requirements and simple process operation, possessing good practical application value.

Provided is a method for treating nickel oxide ore that enables efficient recovery of nickel as a recovery target. A method for producing a sulfide, which is a method for producing a sulfide from nickel oxide ore, includes: a mixing process in which nickel oxide ore and a reducing agent are mixed to obtain a mixture; a reduction process in which the mixture is charged into a reduction furnace and subjected to reduction treatment to obtain a reduction product including a metal that is a ferro-nickel and a slag that is an oxide; a separation process in which the metal and the slag are separated from the reduction product; and a sulfidation process in which a sulfidation agent is added to the metal obtained in the separation process to obtain a sulfide containing nickel.

This invention discloses a self-lithiated ternary material, its preparation method, and its applications. The self-lithiated ternary material has a core-shell structure, with the core being the ternary material and the shell comprising two coating layers: lithium-rich nickel oxide (Li₂NiO₂) and a carbon coating layer, from the inside out. In this invention, Li₂NiO₂ is uniformly coated on the surface of the ternary material, avoiding the possibility of gelation caused by excessively high residual alkali content in the slurry due to the addition of lithium supplementer. Furthermore, the dense carbon coating layer also prevents contact between Li₂NiO₂ and PVDF, thereby improving the material's processing performance and extending the slurry window period. This invention achieves thorough and uniform mixing of the positive electrode lithium supplementer and the ternary material, preventing lithium plating during charging. In addition, during charge and discharge, the dense carbon coating layer also prevents contact between the ternary material, the lithium supplementer, and the electrolyte, thereby reducing side reactions and improving cycle performance and storage performance.

This invention discloses a bulk-phase, single-crystal sodium-ion layered cathode material containing a secondary phase and its preparation method, belonging to the technical field of sodium-ion battery cathode materials. The main phase of the material is an O3-type layered structure, with at least one nanoscale secondary phase selected from nickel oxide, zinc oxide, copper oxide, or magnesium oxide embedded inside, and no obvious random grain boundaries within the particles. First, the precursor is mixed with a sodium source and initially sintered to induce the local segregation of transition metal elements or dopants on the particle surface and the precipitation of oxide particles. Subsequently, sodium is added for secondary sintering, driving a topological transformation of the main phase and embedding oxide nanoparticles in situ, constructing an embedded heterostructure. This invention utilizes the lattice mismatch generated at the heterostructure interface to guide the generation of controlled transgranular microcracks, which act as electrolyte penetration channels and shorten the ion solid-phase diffusion path. While maintaining the mechanical stability of the single crystal, it solves the bottleneck of limited rate performance of large-size single crystals, improving the energy density, rate characteristics, and long-cycle stability of the material.

This application relates to perovskite solar cells, their fabrication methods, and electrical devices. The perovskite solar cell of this application comprises a first hole transport layer, a second hole transport layer, and a perovskite layer stacked together, with the second hole transport layer located between the first hole transport layer and the perovskite layer. The material of the first hole transport layer includes nickel oxide; the raw materials of the second hole transport layer include self-assembled monolayer materials and additives; the additives include ester compounds having phosphate groups and multiple alkenyl groups. The perovskite solar cell of this application can solve the problem of insufficient passivation of nickel oxide surface defects by self-assembled monolayer materials, thereby simultaneously achieving high photoelectric conversion efficiency and device stability.

This invention relates to the field of lead-free gold metallic glaze preparation technology, and discloses a lead-free gold metallic glaze and its preparation process. The components and their mass parts in the metallic glaze are as follows: washed kaolin: 5-8 parts, calcined kaolin: 4-6 parts, quartz powder: 8-10 parts, wollastonite: 2-4 parts, calcined talc: 0-2 parts, calcined zinc oxide: 2-4 parts, albite: 58-60 parts, tungsten oxide: 3-5 parts, electrolytic manganese: 9-11 parts, copper oxide: 0-2 parts, nickel oxide: 0-2 parts, vanadium pentoxide: 1-3 parts. This invention uses albite, quartz, wollastonite, talc, and zinc oxide as flux and skeleton components, which not only provide high-temperature fluidity but also improve the glaze surface strength. The addition of vanadium pentoxide and nickel oxide enhances the stability of the metallic luster. The washed kaolin, as a glaze slurry suspending agent, allows the calcined kaolin to not only increase the initial melting temperature of the glaze but also reduce pinholes on the glaze surface.

This invention discloses a hole transport layer with uniform interface distribution and a perovskite solar cell. The uniformly distributed hole transport layer comprises: a vanadium oxide layer disposed on the upper surface of an ITO glass substrate; a nickel oxide layer disposed on the upper surface of the vanadium oxide layer; and a self-assembled monolayer disposed on the upper surface of the nickel oxide layer. The hole transport layer provided by this invention includes VO x Layer, NiO x Layer and SAM layer, by bonding NiO to an ITO glass substrate. x Introducing an ultrathin VO layer between the layers x Layers were constructed to create ITO / VO4 with continuous energy levels and high chemical reactivity. x / NiO x The interface solves the ITO / NiO problem. x The uneven distribution of SAMs at the interface, high hole transport loss, and poor stability have been addressed. This study significantly improves the photoelectric conversion efficiency and operational stability of semi-transparent perovskite solar cells, providing an improvement strategy for perovskite / silicon tandem solar cells.

This invention relates to a method for preparing a hole transport layer in a perovskite solar cell and its application. The method requires no annealing throughout and specifically includes: S1. Using a nickel target, a first nickel oxide layer is prepared on a substrate surface by magnetron reactive sputtering at a pressure of 0.2–0.4 Pa and an argon gas flow rate of 200–600 sccm, wherein the argon to oxygen flow rate ratio is 20–30%; S2. Using a nickel oxide ceramic target, a second nickel oxide layer is obtained by magnetron physical sputtering at a pressure of 0.3–0.5 Pa and an argon gas flow rate of 200–600 sccm, wherein the oxygen to argon flow rate ratio is 1.5–5%. The technical problem to be solved is how to provide a method for preparing a hole transport layer that combines nickel reactive sputtering with nickel oxide ceramic target physical sputtering using magnetron sputtering equipment, requiring no annealing throughout the process, significantly reducing preparation costs, and forming a film structure more conducive to hole transport.

This invention belongs to the field of ammonia decomposition catalyst technology, specifically relating to a silicon-aluminum non-precious metal ammonia decomposition catalyst, its preparation method, and its application. The silicon-aluminum non-precious metal ammonia decomposition catalyst uses a silicon-aluminum molecular sieve as a carrier and nickel oxide and rare earth metal oxides as catalysts. The silicon-aluminum molecular sieve is a complex, irregular, amorphous molecular sieve formed by aluminum oxide and silicon dioxide in a mass ratio of 1:0.1~10. The mass ratio of the silicon-aluminum molecular sieve, nickel oxide, and rare earth metal oxides is 35~89:10~50:1~15. The nickel oxide and rare earth metal oxides are distributed on the surface of the silicon-aluminum molecular sieve. The molecular sieve of this invention has a high specific surface area and a regular pore structure, which allows for better dispersion of nickel oxide. This avoids the formation of nickel aluminate spinel structures between nickel and aluminum in the system, which would lead to catalyst deactivation.

The application discloses a preparation method of a porous anode support body, and has the characteristics that the method comprises the following steps: S1: ball milling nickel oxide, zirconium oxide, silicon dioxide, a solvent and a binder to obtain a ball milling slurry; drying the ball milling slurry to obtain a mixed powder; S2: tabletting the mixed powder prepared in the step S1, and then performing glue removal sintering to obtain an anode support intermediate; S3: soaking the anode support intermediate prepared in the step S2 in a hydrofluoric acid solution to dissolve silicon, and obtaining the anode support intermediate after silicon dissolution; and S4: performing secondary sintering on the anode support intermediate after silicon dissolution prepared in the step S3 to obtain the porous anode support body. In the application, the silicon dioxide is used as a pore-forming agent, and after the silicon dioxide is dissolved by the hydrofluoric acid, the prepared porous anode support body can increase a three-phase interface of an electrochemical reaction, reduce concentration polarization, and thus improve output power density of a battery and stability of operation.

The application is suitable for the technical field of electrochemical energy storage devices, and provides a high-performance flexible nickel-iron battery and a preparation method thereof, which comprises a fluorine-doped nickel hydroxide positive electrode based on a flexible conductive substrate, an iron-based material negative electrode based on a flexible conductive substrate, and a gel electrolyte; fluorine-doped nickel hydroxide is used as the positive electrode active material, and through controllable fluorine ion doping, the electronic conductivity and structural stability of the nickel hydroxide are significantly improved while the structure of the nickel hydroxide is maintained; the positive electrode and the negative electrode are both loaded on a flexible conductive substrate; and the PVA-KOH gel electrolyte is combined, and through a freeze-thaw solidification process, the electrode and the electrolyte are integrated in a flexible manner. The battery prepared by the application has high energy density, excellent rate performance and cycle stability, and has good electrochemical performance retention under bending, folding and other deformations, and can be applied to the fields of wearable electronic devices and the like.

This invention relates to the field of nanomaterials and photovoltaic devices, specifically a method for preparing ultrafine nickel oxide nanoparticles, comprising the following steps: weighing Ni(NO3)2·6H2O into a beaker, adding deionized water, preparing a nickel nitrate solution with a concentration of 3-5 mol / L, adding ammonia dropwise to the solution until the pH value of the solution is 9-10, obtaining a deep blue mixed solution; centrifuging the mixed solution with deionized water, repeating this process three times to obtain a uniform green colloidal precipitate; drying the colloidal precipitate in a freeze dryer for 6-24 hours, removing it, grinding it into powder, and calcining it in a muffle furnace to obtain black nickel oxide nanoparticles. The prepared ultrafine nickel oxide nanoparticles have small size and good solution dispersibility, and can be used to prepare flat and dense hole transport layer films, showing good application prospects in the field of perovskite solar cells.

This invention relates to the field of supercapacitor technology, providing a cobalt-nickel oxide / activated carbon composite material, its preparation method, and its application. The preparation method is as follows: Activated carbon is dispersed in water to obtain an activated carbon precursor solution; cobalt and nickel salts are dissolved in water, and then the activated carbon precursor solution is added, stirred for adsorption, and filtered after completion; then dissolved in an ethanol solution, a precipitant and a morphology modifier are added, and the mixture is heated to 120℃-140℃ and maintained for 10-25 hours. After completion, the mixture is filtered, washed, dried, and calcined to obtain the cobalt-nickel oxide / activated carbon composite material. This cobalt-nickel oxide / activated carbon composite material combines the advantages of the conductive network and porous structure of activated carbon with the pseudocapacitive activity of cobalt-nickel oxide, and can be used as an electrode material for supercapacitors. The specific capacitance of the assembled symmetrical supercapacitor reaches 144 F / g. This solves the problems of high cost, complex processes, easy agglomeration of active components, and poor electrochemical performance of existing electrode materials.

An air cathode and an aluminum-air battery, wherein the air cathode contains an active material, the active material being any one or a mixture of two of the following materials: nickel oxide, iron oxide, manganese oxide, lithium-ion nickel oxide, lithium-ion iron oxide, lithium-ion manganese oxide; strontium titanate doped with any one or two of iron, nickel, manganese, and lanthanum; calcium titanate doped with any one or two of iron, nickel, manganese, and lanthanum; magnesium titanate doped with any one or two of iron, nickel, manganese, and lanthanum; lanthanum nickelate doped with calcium and / or strontium; lanthanum ferrite doped with calcium and / or strontium; lanthanum cobaltate doped with calcium and / or strontium; lanthanum manganate doped with calcium and / or strontium; and graphite or metal carbonitride loaded with a metal.

Provided is a method for evaluating oxidation resistance of a sulfide solid electrolyte containing a lithium (Li) element and a sulfur (S) element. In the present invention, direct current resistance or alternating current impedance of a mixture of the sulfide solid electrolyte and an oxide of nickel, manganese, or cobalt is measured over time; and oxidation resistance of the sulfide solid electrolyte is evaluated on the basis of a change over time in said resistance or said impedance. The oxide of nickel preferably contains NiO2. The oxide of manganese preferably contains MnO2. The oxide of cobalt preferably contains CoO2.

The invention relates to a catalyst for the decomposition of ammonia into hydrogen and nitrogen, wherein the catalyst comprises at least ruthenium, mesoporous cerium oxide and at least one oxide selected from among cobalt, nickel and iron oxides, preferably nickel oxide, and to a method for producing hydrogen from ammonia comprising the following steps in this order: activating at least one catalyst according to the invention at a temperature ranging from 300°C to 600°C under a stream of a reducing gas; bringing the activated catalyst into contact with a gas to be treated comprising ammonia at a temperature ranging from 200°C to 800°C, and at a pressure ranging from atmospheric pressure to 100 bar.

The application laser melting method for preparing thermosensitive bulk material belongs to the field of functional oxide ceramic material preparation, and the method first dissolves nickel oxide NiO and manganese dioxide MnO2 raw materials in oxalic acid solution, prepares NiMn2O4 thermosensitive powder material through drying, then anneals in an atmospheric environment to obtain a spinel structure thermosensitive powder material, and finally melts the thermosensitive powder material laid on the substrate into NiMn2O4 bulk material using a laser. By controlling parameters such as energy density of the melting laser, the performance of the prepared NiMn2O4 bulk material can be regulated. The thermosensitive bulk material prepared by the method has the advantages of simple preparation process, high density, good electrical performance and the like.

The invention relates to an electrode for gas evolution in an electrolytic process, comprising a metal substrate and a coating formed on the substrate, the coating comprising at least a catalytic porous outer layer comprising porous nickel oxide regions dispersed within a solid nickel oxide binder, and a method for producing such an electrode from preformed nickel vanadium oxide particles.

The present application belongs to the technical field of propylene desulfurization, and particularly relates to a high-temperature-resistant sulfur-reducing additive and a method for reducing and upgrading the sulfur content of coking propylene by using the sulfur-reducing additive. The high-temperature-resistant sulfur-reducing additive comprises acidified kaolin, ammonium metavanadate, zinc oxide, nickel oxide, REY molecular sieve and USY molecular sieve as effective components. The method for reducing and upgrading the sulfur content of coking propylene relies on the mature catalytic cracking process to reduce the sulfur content of coking propylene. By compounding the high-temperature-resistant sulfur-reducing additive with the catalytic cracking catalyst, carbonyl sulfur can be transferred to hydrogen sulfide under the condition that the state of propylene remains unchanged. The hydrogen sulfide can be absorbed by lean amine liquid, so as to achieve the purpose of reducing and upgrading the sulfur content of coking propylene.