149 results about "Metallic Nickel" patented technology

The invention relates to the technical field of welding materials, and particularly discloses a high-temperature-resistant flux-cored wire containing rare earth elements and a preparation method of the high-temperature-resistant flux-cored wire. The high-temperature-resistant flux-cored wire containing the rare earth elements comprises a welding wire skin and a flux core. The flux core comprises the following raw materials of dehydrated rutile, dehydrated potassium feldspar, zircon sand, metal chromium powder, metal nickel powder, electrolytic manganese, ferrotitanium, ferro-aluminum, potassium cryolite, potassium titanate, sodium titanate, fine iron powder, yttrium-based iron alloy powder, atomized ferrosilicon, nitrided ferrochrome, bismuth oxide, auxiliaries and the balance reduced iron powder. The auxiliary agent is a mixture of a zirconium-iron alloy, a titanium-iron alloy and an aluminum-magnesium alloy. A specific alloy auxiliary is introduced into the flux core to protect stable transition of rare earth yttrium, yttrium and multiple components synergistically optimize the weld joint performance, 253MA heat-resistant steel is matched, slag and electric arc regulation and control components and a reasonable process are matched, and the welding quality of the welding wire is improved.

The invention discloses a metal oxide / carbon / nickel composite material, a preparation method and application of the metal oxide / carbon / nickel composite material to a magnesium-based hydrogen storage material, and belongs to the field of hydrogen storage energy. The problems that a single-component catalyst in the MgH2 hydrogen storage material is low in active site, the interface is inactivated in the circulation process and the like are solved. A metal nickel source and a cerium source are combined with an organic ligand trimesic acid to form bimetal MOF, CeO2 / C / Nix obtained after calcination inherits the high specific surface area of MOF, metal is evenly dispersed in a carbon matrix, CeO2 / C / Nix is introduced into MgH2, microscale efficient catalysis of MgH2 is achieved, when the doping amount of CeO2 / C / Ni20 is 8 wt.%, the initial dehydrogenation temperature is 188.23 DEG C, and when the doping amount of CeO2 / C / Ni20 is 8 wt.%, the initial dehydrogenation temperature is 188.23 DEG C, and the specific surface area of CeO2 / C / Nix is 27.8 wt.%. After 10 cycles, the capacity retention rate is 98.8%, excellent hydrogen storage performance is shown, and a unique insight is provided for large-scale production of the magnesium-based hydrogen storage material.

This invention relates to the field of water electrolysis and hydrogen energy utilization technology, and provides an in-situ electrodeposition method for improving NiMoP. x O y A method for studying the catalytic activity and stability of a self-supporting nickel-based hydrogen evolution electrode (NMOP). First, NiMoP... x O y The / NF self-supporting foam nickel-based electrode is prepared by immersing it in a nickel salt solution for a certain period of time, drying it, and then immersing it in a sodium sulfate solution for electrodeposition reduction reaction. This invention provides a simple and convenient method for adjusting the amount of metallic nickel deposited, ensuring its distribution among the active component particles of the electrode. This effectively improves the adhesion of the active component and prevents its detachment, significantly enhancing the hydrogen evolution activity and stability of the hydrogen evolution electrode. At an industrial current density of 100 mA / cm², the overpotential of the modified electrode prepared by this method is reduced by approximately 20% compared to the unmodified electrode, and the charge transfer resistance is reduced by approximately 41%. After 30,000 CV cycle accelerated durability tests, the increases in overpotential and charge transfer resistance are less than 7% and 26% of those of the unmodified electrode, respectively. Therefore, this invention has promising prospects for industrial application.

This invention belongs to the field of metal powder preparation technology, and discloses a porous nickel powder, its preparation method, and its applications. The method includes: preparing nickel oxalate powder as a precursor; forming a nickel coating layer on the surface of the nickel oxalate powder by chemical plating to obtain nickel oxalate@nickel core-shell structured composite particles; subjecting the composite particles to pyrolysis annealing treatment, causing the internal nickel oxalate to decompose and generate gas, and the external nickel coating layer to transform into a porous metal framework, thereby obtaining porous nickel powder. This method is simple, low-cost, and produces nickel powder particles with uniform size, stable pore structure, good connectivity, and large specific surface area, making it suitable as a precursor for electrocatalytic active materials or porous electrode materials.

This invention discloses a transition metal phosphide catalyst, its preparation method, and its application, belonging to the field of electrocatalysis technology. The process includes: firstly, dissolving nickel salt, lanthanum salt, urea, and ammonium fluoride in deionized water to synthesize a nickel-lanthanum layered hydroxide nanosheet precursor via a hydrothermal method; secondly, preparing a lanthanum-doped nickel phosphide catalyst using a phosphating reaction; and thirdly, utilizing a lanthanum doping strategy to modulate the electronic structure of nickel phosphide and improve its electrocatalytic reaction performance. This lanthanum-doped nickel phosphide material exhibits good catalytic activity when used to catalyze hydrogen evolution and sulfide ion oxidation reactions. In an integrated two-electrode electrolyzer for sulfide ion oxidation-assisted hydrogen production, it outputs 10 mA cm⁻¹. ‑2 This invention achieves the goal of producing hydrogen and high-value-added sulfur products with low energy consumption by requiring a relatively low voltage of 0.525 V at a current density. It has advantages such as simple preparation process, controllable operating conditions, and low raw material costs, possessing the potential for large-scale production and serving as a high-performance catalyst for electrocatalytic hydrogen production and sulfur ion oxidation reactions.

The invention belongs to the technical field of environmental science and water treatment, and particularly relates to a PLA-Ni-coated MOF composite membrane and a preparation method and application of the PLA-Ni-coated MOF composite membrane. Comprising a porous polylactic acid substrate film constructed by 3D printing, a metal nickel layer arranged on the surface of the polylactic acid substrate film, and a ZIF-8 nanoparticle layer arranged on the surface of the metal nickel layer, the metal nickel layer is arranged between the polylactic acid substrate film and the ZIF-8 nanoparticle layer. The PLA-Ni-coated MOF composite membrane has a three-stage hierarchical composite structure of a PLA substrate membrane, a nickel coating and a ZIF-8 particle layer, is stable in structure and excellent in performance, has good mechanical strength and acid and alkali resistance stability, and is suitable for large-scale industrial oil-water separation.

The invention provides a transition metal nickel complex as well as a preparation method and application thereof. The transition metal nickel complex has a structure as shown in a formula (I), wherein R1, R2, R3, R4 and R5 are independently selected from the following groups substituted by one or more Ra: H, C1-6 alkyl, C1-6 alkoxy, C6-20 aryl or C6-20 heteroatom aryl. The complex provided by the invention has higher catalytic activity and stability in catalysis of olefin polymerization, especially for polymerization of ethylene, has very strong regulation and control performance on the molecular weight of polyethylene, and can be used for preparing highly branched polyethylene.

The invention discloses a method for preparing monophenol compounds from lignin. The method comprises the following steps: mixing a raw material lignin with a solvent, and carrying out a one-step hydrogenation reaction in a hydrogen atmosphere under the action of a nickel-molybdenum-based catalyst to prepare the monophenol compound, the nickel-molybdenum-based catalyst comprises metal nickel and nickel oxide, molybdenum oxide and silicon oxide. The method provided by the invention has the characteristics of low production cost, simple separation, high monophenol compound yield and the like.

The invention discloses a rare earth element modified nickel-based nano-catalyst and a preparation method and application thereof.The rare earth element modified nickel-based nano-catalyst comprises a carrier and an active component loaded on the carrier, and the carrier is cerium dioxide and yttrium oxide co-doped three-dimensional ordered silicon dioxide nanoparticles; the active component is metal nickel. The application refers to the application of the catalyst in preparation of synthesis gas through carbon dioxide methane reforming. According to the invention, rare earth element doped and modified three-dimensional ordered silicon dioxide nanoparticles are used as a carrier, nickel metal is loaded on the nanoparticles, and the problem of carbon deposition can be effectively reduced by adjusting the interaction of alkaline sites and oxygen vacancies on the surface of the catalyst and the metal carrier. The method provided by the invention is helpful for realizing industrialization of a carbon dioxide methane catalytic reforming reaction, realizing a carbon emission reduction target and solving a green electricity energy storage problem.

The invention provides a method for removing ferrous iron in a nickel chloride solution through efficient oxidation promotion, belongs to the technical field of purification treatment of chlorination system solutions, and solves the problem that free ferrous iron in the nickel chloride solution cannot be effectively oxidized and converted into ferric iron in the prior art. Controlling the concentration of main metal nickel ions, and adding a corresponding amount of hydrogen peroxide into the nickel chloride solution for stirring according to the content of impurity Fe in the nickel chloride solution; injecting the stirred nickel chloride solution into an electrolytic bath, heating, and raising the temperature of the nickel chloride solution in the bath; and the cathode and the anode in the electrolytic bath are conducted, and the introduced nickel chloride solution is subjected to electrolytic treatment, so that divalent iron in the nickel chloride solution can be converted into trivalent iron. The process flow is simple, the production process is easy to control, the facility equipment investment is low, and the final benefit is remarkable.

The application relates to the technical field of fluorine-containing iodoalkane preparation, in particular to a preparation method of high-carbon-number diiodoperfluoroalkane, which comprises the following steps: reacting tetrafluoroethylene and elemental iodine to generate diiodotetrafluoroethane; and under the action of a catalyst, the diiodotetrafluoroethane is subjected to telomerization reaction with tetrafluoroethylene to generate high-carbon-number diiodoperfluorobutane and diiodoperfluorohexane; and the catalyst is a metal nickel catalyst supported on silicon dioxide. The metal nickel catalyst supported on silicon dioxide is used to make the diiodotetrafluoroethane and the tetrafluoroethylene subjected to telomerization reaction to obtain diiodoperfluoroalkane with higher carbon number. The application has the advantages of simple process, low reaction temperature and the like, and can significantly improve the yield of diiodoperfluorobutane and diiodoperfluorohexane.

The application discloses a preparation method of baricitinib, and belongs to the technical field of drug synthesis. The method comprises the following steps: firstly, 2-[1-(ethylsulfonyl)-3-azetidinyl]acetonitrile and 4-pyrazole boron pinacol ester are subjected to a Michael addition reaction to obtain 1-(ethylsulfonyl)-3-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl]-3-azetidine acetonitrile as an intermediate I; secondly, a protection group is introduced on the amino group of 4-chloropyrrolopyrimidine to obtain an intermediate II; finally, the intermediate I and the intermediate II are subjected to a Suzuki coupling process by adopting a method of combining a nickel pre-catalyst with a supporting ligand to obtain the baricitinib. The preparation method creatively realizes cross coupling of the baricitinib by adopting the cheap metal nickel as a catalyst, avoids the use of a heavy metal palladium catalyst, and has the advantages of low cost, low toxicity, small pollution, green environmental protection and the like.

This invention provides a composite cathode material for lithium-sulfur batteries, its preparation method, and its application. The preparation method of the composite cathode material for lithium-sulfur batteries provided by this invention includes: firstly, using carbon fiber cloth as a substrate, depositing a nickel source on the surface of the carbon fiber cloth, and then heat-treating the carbon fiber cloth with the deposited nickel source in an inert gas atmosphere to form metallic nickel nanoparticles and create pores within the carbon fiber cloth; after heat treatment, etching with an acid solution to remove the metallic nickel nanoparticles and obtain a porous carbon fiber framework; secondly, in-situ generating a bimetallic sulfide NiCo2S4 on the porous carbon fiber framework; finally, melting and combining the porous carbon fiber framework with the in-situ grown bimetallic sulfide NiCo2S4 with elemental sulfur to obtain the composite cathode material for lithium-sulfur batteries. The composite cathode material provided by this invention can significantly suppress the shuttle effect of the lithium-sulfur battery cathode, improve sulfur loading and reaction kinetics, thereby obtaining a high-performance lithium-sulfur battery.

The application provides a tungsten particle and a preparation method and application thereof, and the preparation method comprises the following steps: growing tungsten particles in a nickel-iron alloy system to obtain a tungsten-nickel-iron alloy; then preparing the tungsten-nickel-iron alloy into an alloy powder; then heating the alloy powder to 1550-1800 DEG C for melting, and then carrying out solid-liquid separation or static stratification, crushing to obtain the tungsten particles; the tungsten particles are obtained by growing tungsten powder in a nickel-iron alloy system first, and then separating the tungsten and the nickel-iron binder phase by density stratification or through a special device, so that the tungsten and the nickel-iron binder phase are separated, and the tungsten particles with uniform particle size are obtained; compared with the prior art, the method of the application overcomes the problems of environmental pollution and separation efficiency in the preparation process of the tungsten particles in the prior art, and can efficiently prepare the tungsten particles with uniform particle size.

The application discloses an electrolytic water oxygen evolution catalyst coating material, a preparation method and application thereof, and relates to the technical field of electrolytic water catalysis. The electrolytic water oxygen evolution catalyst coating comprises a metal nickel framework, a spinel type manganese cobalt oxide and a spinel type nickel cobalt oxide. The metal nickel framework has a porous structure, which is beneficial to the contact of the electrode and the electrolyte and the escape of gas. The metal oxide can expose more active sites. The metal framework in the substrate and the coating can enhance the conductivity of the entire electrode system. The electrolytic water oxygen evolution catalyst coating material has the advantages of low preparation cost, high catalytic activity and good stability, and is beneficial to improving the hydrogen production efficiency of electrolytic water and promoting the wide use of hydrogen energy.

This invention belongs to the field of catalyst technology and discloses a nitrogen-doped carbon-supported cobalt-nickel dual-site ORR-OER catalyst and its preparation method. The catalyst has the molecular formula CoNi-MOF@ACW and the structure is a dodecahedral CoNi-MOF grown on nitrogen-doped biomass carbon ACW with Co and Ni in an atomically dispersed state. Preparation method: (1) Prepare nitrogen-doped biomass carbon ACW; (2) Prepare a complex of metallic nickel and PI-PINi; (3) Dissolve water-soluble zinc salt, water-soluble cobalt salt and PINi together in methanol to obtain solution A; (4) Add 2-methylimidazole to methanol to obtain solution B; (5) Add ACW to solution A, stir evenly and then add solution B, continue stirring evenly; (6) Take out the solid material to obtain the precursor CoPINi-MOF@ACW; (8) Wash CoPINi-MOF@ACW with methanol and then dry; (9) Embed CoPINi-MOF@ACW with NH4Cl and pyrolyze to obtain the target catalyst. The catalyst of this invention has extremely high ORR-OER bifunctional catalytic activity and stability.

The present application relates to a kind of method for preparing metal titanium using titanium oxide containing slag, belong to resource clean utilization technical field.Titanium oxide containing slag, low-purity silicon and slagging agent are reduced smelting together, after slag-gold separation, obtain bulk Si-Ti intermediate alloy and residue;The obtained bulk Si-Ti intermediate alloy is crushed into Si-Ti intermediate alloy particles with particle size less than 4mm;With the obtained Si-Ti intermediate alloy particles as anode, with metal molybdenum or metal nickel as cathode, with metal titanium as reference electrode, with NaCl-KCl-NaF as molten salt, and Na3TiF6 Or K3TiF6 is added to molten salt, the valence of titanium in molten salt electrolysis process is controlled to +3, under high-purity argon atmosphere, at 973K, after molten salt electrolysis, metal titanium is deposited on cathode, and anode forms metal silicon powder.The present application first provides a kind of method for separating silicon titanium intermediate alloy obtained by reducing titanium oxide containing slag with silicon into metal titanium and metal silicon powder, realizes the clean utilization of titanium oxide containing slag or waste.

The application provides an imidazole-phosphoramidite bidentate ligand, a synthesis method thereof, a metal catalyst prepared from the imidazole-phosphoramidite bidentate ligand and application of the metal catalyst, and relates to the technical field of catalyst preparation.The imidazole-phosphoramidite bidentate ligand developed by the application has stable chemical properties and is not easy to be oxidized, and solves the problems of poor stability of an imidazole-based bidentate ligand, harsh use and storage conditions in the prior art, and the synthesis method is simple, and the total yield can reach 59%; the imidazole-phosphoramidite bidentate ligand has strong coordination ability, the metal nickel catalyst prepared from the imidazole-phosphoramidite bidentate ligand has high catalytic activity, and in a carbon dioxide carboxylation reaction, the metal nickel catalyst exhibits excellent reaction activity, and is a ligand with very good industrial application prospect.

The application provides a normal butyl aldehyde liquid-phase hydrogenation catalyst and a preparation method and application thereof, and relates to the technical field of catalysts. The catalyst is an auxiliary agent modified supported metal nickel catalyst, which is prepared by a coprecipitation method and is composed of 20-80% active components Ni, 2-20% auxiliary agents and a carrier. The catalyst is used in a two-stage hydrogenation process of normal butyl aldehyde. The process is simple and low in cost, the catalyst is high in stability, the surface acid and alkali are moderate, the normal butyl aldehyde can be prepared at a high conversion rate, the generation of by-products is obviously inhibited, the yield of normal butyl alcohol is improved, the catalyst is suitable for industrial application, and an excellent scheme for efficiently preparing normal butyl alcohol is provided.

The invention discloses an intelligent sensing halogen-free flame-retardant resin coating for wood as well as a preparation method and application of the intelligent sensing halogen-free flame-retardant resin coating, and belongs to the technical field of wood functional coating materials. The coating comprises the following raw materials: a deionized water component, a universal acrylic monomer component, a special acrylic monomer component, a halogen-free flame-retardant component, an emulsifier component and an initiator component. The preparation method of the coating comprises the following steps: by taking tannic acid as a core, firstly constructing a nitrogen-phosphorus-based composite system under the synergistic effect of the tannic acid, polyethyleneimine and phosphoric acid; then metal nickel is further complexed, polypyrrole is subjected to in-situ polymerization to jointly construct a halogen-free flame-retardant component, polyacrylate is prepared through emulsion polymerization, and the active early-warning multifunctional flame-retardant coating which is low in expansion and high in compactness is constructed. According to the technology, integration of fire early warning, efficient flame retardance and base material protection is achieved, a new material design strategy and a new technical path are provided for safe and durable application of wood, and the application prospect is wide.

The invention relates to a method for synthesizing trans-isopentenyl substituted indolone under the catalysis of transition metal nickel. Specifically, a metal nickel catalyst (Ni (cod) 2) and tricyclohexylphosphine (PCy3) are used as ligands, C3 unsubstituted indolone is used as a nucleophilic reagent to react with isoprene, and a trans-isopentenyl substituted indolone product is obtained. And then taking the product as a reaction raw material, and carrying out nucleophilic substitution reaction on the product and halogenated alkane under an alkaline condition to obtain the 3, 3-disubstituted indolone with divergent functional groups. According to the invention, isoprene is used as a reaction precursor, a trans-isopentenyl substituted indolone product is obtained with high activity and selectivity, a nucleophilic substitution reaction is relayed, and a new strategy is provided for flexibly and conveniently introducing functional groups with different steric hindrances and electrical properties.

The invention relates to the technical field of adsorption composite materials, in particular to a zeolite imidazate framework closed nickel composite material and a preparation method and application thereof. The composite material is prepared from Ni-NPs (at) gZIF-8 and MgH2, the Ni-NPs (at) gZIF-8 comprises a glass state ZIF-8 and metal nickel nanoparticles loaded in a pore channel of the glass state ZIF-8. The composite material disclosed by the invention has relatively high hydrogen storage capacity, and the reversible hydrogen storage capacity of the composite material is as high as 5.7-6.0 wt%; compared with the prior art, the initial hydrogen desorption temperature is obviously reduced to 230-245 DEG C and is far lower than 325 DEG C of pure MgH2; according to the composite material with nickel sealed by the zeolite imidazate framework, through the high stability and confinement effect of the glassy state ZIF-8, the cycling stability and mechanical strength of the material are remarkably improved, and the capacity retention rate exceeds 94% after 50 times of cycling.

The utility model discloses a central control switch group, which comprises a shell, a plurality of button assemblies are arranged in the shell, a circuit board and a base are sequentially arranged at the bottom of the shell from top to bottom, each button assembly comprises a sliding block and a key, a plurality of sliding cavities are arranged in the shell, the sliding blocks are embedded in the inner surfaces of the sliding cavities, and the sliding blocks are embedded in the inner surfaces of the sliding cavities. The sliding block is arranged in the sliding cavity and moves in the Z-axis direction in the sliding cavity, and the key is clamped at the top of the sliding block. According to the utility model, by pressing the button, the slide block moves downwards along the inner surface of the slide cavity and extrudes the metal nickel sheet on the conductive rubber pad to be in contact with the golden finger for electric conduction so as to achieve the effect of activating the control switch, compared with a mechanical button, the structure is simpler and more compact, and the influence of movement wear on the effect of the switch is very small; and the conductive rubber pad is used for protecting the circuit board from short circuit caused by the fact that the golden fingers of the circuit board are in contact with water.

The utility model discloses an elastic-area ultra-wideband shielding hanging structure, and provides a nickel-coated graphite silica gel composite structure, and metal nickel and graphite are introduced into a silica gel block, so that the electromagnetic shielding capability of a material can be remarkably improved; besides, a conductive cloth layer structure is combined on the nickel-coated graphite silica gel layer, and the conductive cloth layer has good mechanical strength and conductivity, so that the overall conductivity of the material can be effectively improved, and the problem of falling or instability caused by high fluidity of the silica gel material is avoided. The addition of the conductive cloth layer not only improves the durability and stability of the drape, but also ensures the uniformity and efficient electromagnetic shielding effect of the material in large-area application. According to the technical scheme, the electromagnetic shielding effect is remarkably improved, the stability and adaptability of the material are improved, and the material has wide application prospects. The electromagnetic shielding material is especially suitable for aerospace, communication systems, military protection and other fields with high electromagnetic shielding requirements.

The invention provides a diamond grinding tool based on silicon carbide wafer processing and a preparation method and application, the diamond grinding tool comprises a grinding pellet piece and a grinding disc, the grinding pellet piece is provided with Ni powder, a metal binding agent, a ceramic binding agent, a pore forming agent and a wetting agent, diamond abrasive particles and the metal-ceramic binding agent are adopted as raw materials and are mixed with Ni, a certain amount of pore forming agent is added, and the mixture is stirred to be uniform; the preparation method comprises the following steps: sintering for 20 minutes at high temperature and high pressure in a high-temperature mold, removing pressure after sintering, cooling to 810 DEG C, preserving heat for 10 minutes, then cooling to 550 DEG C, and preserving heat for 10 minutes, so that sintering shrinkage can be effectively prevented; compared with a conventional metal-ceramic bond diamond grinding tool, the multi-nickel metal-ceramic bond diamond grinding tool has the advantages that the material removal rate is increased by 18.3%, the overall level of the grinding process and technology can be improved, the quality of a processed product is improved, the preparation period is short, the product cost can be greatly reduced, and the economic benefit is high.

The application discloses a high-performance nickel / carbon multi-dimensional nano-assembly structure electrocatalyst and a preparation method and application thereof. A nickel / carbon multi-dimensional nano-assembly structure electrocatalyst with one-dimensional carbon nanotubes and two-dimensional carbon sheets loaded with zero-dimensional nickel nanoparticles is prepared by mixing nickel salt and a biological organic ligand as a precursor and through simple one-step pyrolysis, taking the biological organic ligand as a carbon source. The biological organic ligand derived carbon material is converted into carbon sheets by using the thermal decomposition of the nickel salt, and meanwhile, the metallic nickel generated by the carbon thermal reduction catalyzes the carbon material to generate carbon nanotubes at high temperature, so as to construct the unique nickel / carbon multi-dimensional nano-assembly structure. The unique multi-dimensional structure has a large specific surface area and a large number of exposed active sites, and is beneficial to the improvement of the catalyst performance.

The invention provides a 90kg-grade ultralow-temperature high-strength steel welding rod and a preparation method thereof, and the welding rod comprises a core wire and a coating covering the surface of the core wire, the coating is prepared from, by weight, 35%-45% of marble, 15%-20% of fluorite, 3%-5% of silica powder, 2%-4% of rutile, 1%-2% of manganese metal, 1%-2% of ferrosilicon, 15%-20% of nickel metal, 5%-10% of ferrotitanium, 2%-5% of ferromolybdenum, 0.4%-0.8% of sodium alginate, 0.3%-0.9% of sodium carbonate, 0.2%-0.5% of lanthanum oxide and the balance iron powder. According to the welding rod, under the high channel temperature welding condition, the mechanical property of deposited metal can obtain high tensile strength in the welding state and the heat treatment state, and good low-temperature toughness is achieved.

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 discloses a transition metal sulfide@wood charcoal self-supporting electrode material, its preparation, and its application. The invention involves carbonizing delignified wood in an inert gas atmosphere to obtain three-dimensional porous conductive wood charcoal; dispersing a nickel and iron source in a solvent to obtain a mixed solution A; subjecting the wood charcoal to a hydrothermal reaction in mixed solution A to obtain wood charcoal loaded with metal double hydroxides; dispersing a molybdenum and sulfur source in a solvent to obtain a mixed solution B; and subjecting the wood charcoal loaded with metal double hydroxides to a hydrothermal reaction in mixed solution B to obtain a wood charcoal electrode loaded with molybdenum sulfide and nickel-iron sulfide nanosheets, which is the transition metal sulfide@wood charcoal self-supporting electrode material. This invention utilizes a simple two-step hydrothermal method to synthesize the transition metal sulfide@wood charcoal self-supporting electrode material, constructing a heterostructure of molybdenum sulfide and nickel-iron sulfide nanosheets, thereby improving electrocatalytic activity and stability.

The invention belongs to the technical field of resource recycling, and particularly relates to a method and device for recycling metal in copper-nickel heavy metal organic complexing waste liquid. The method comprises the following steps: performing pulse electrolysis treatment on the copper-nickel heavy metal organic complexing waste liquid to obtain metal copper and waste liquid after pulse electrolysis; the waste liquid obtained after pulse electrolysis is subjected to extraction treatment, and a nickel-loaded organic phase is obtained; carrying out back extraction treatment on the nickel-loaded organic phase by using an acid solution to obtain a nickel salt solution; and the nickel salt solution is subjected to diaphragm electrolysis treatment, and metal nickel is obtained. According to the method provided by the invention, copper and nickel metals in the copper-nickel heavy metal organic complexing waste liquid can be effectively separated and recycled, the recycling efficiency is high, the copper-nickel separation effect is good, and thus efficient recycling of metal resources in the copper-nickel heavy metal organic complexing waste liquid is realized; meanwhile, the characteristic of low energy consumption is also realized.