40 results about "Nickel chloride hydrate" patented technology

The invention discloses a preparation method for a Ni-Co / carbon nanotube aerogel catalyst of a zinc-air battery, which is used for the field of the zinc-air battery. In the catalyst, the nanometer Ni-Co / carbon nanotube aerogel dual-functional catalyst is successfully prepared by taking sodium alginate, cobalt chloride hexahydrate, nickel chloride hexahydrate and carbon nanotubes as raw materials. The dual-functional catalyst is endowed with excellent oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) catalytic performance, the initial potential of OER is early, the current density of the dual-functional catalyst is large, the initial potential of ORR is early, the limiting current density is large, and the stability is high; and moreover, the charging and discharging voltage difference of the zinc-air battery before and after long circulation test is small, and the energy efficiency after long circulation is high. The preparation method has the advantages of simplicity, rapidness in operation, greenness and environment friendliness, the source of sodium alginate is rich, and the obtained dual-functional catalyst is excellent in performance and is the zinc-air battery catalyst having a very good prospect.

The present invention discloses a method for controllable growth of uniform nano nickel chain array induced by magnetic field. NiCl2.6H2O, glycol and hydrazine hydrate are chosen as raw materials. The raw materials react in a stable magnetic field to get a black product. Through centrifugal separation and alcohol wash of the black product, a regularly arranged nickel nano linear array is obtained. Through controlling the reaction temperature of the system and magnetic-field intensity, the present invention may obtain a nickel nano linear array with controllable dimensions, high purity, high length-diameter ratio and high orientation. The preparation method of the present invention is characterized by simple process, easy operation, moderate reaction conditions, energy conservation and environmental friendliness.

The invention belongs to the technical field of catalysts, and particularly relates to a preparation method of a NiFe2O4 / Cu2O magnetic composite nanometer catalyst. According to the preparation method, nickel chloride hexahydrate, ferric trichloride hexahydrate, copper acetate hexahydrate, glucose, sodium hydroxide and deionized water are used as raw materials. The preparation method comprises the following steps: firstly preparing a mixed solution by using the nickel chloride hexahydrate and the ferric trichloride hexahydrate, then heating, separating, washing and drying the mixed solution to obtain a magnetic NiFe2O4 nanometer catalyst; secondly, dissolving copper acetate dihydrate in ethylene glycol monomethylether and stirring, adding NiFe2O4 solid powder to the mixed solution, stirring, adding the glucose, separating, washing and drying to obtain a NiFe2O4 / Cu2O magnetic composite nanometer catalyst. The NiFe2O4 / Cu2O magnetic composite nanometer catalyst can remove organic dyestuff in water through adsorption and photocatalysis efficiently and quickly, can be recycled through magnets and meanwhile has the characteristics of simple preparation and repeated use.

A MOF-derived porous metal phosphide nanosheet array and its application belong to the technical field of MOF-derived supercapacitor materials. Nickel chloride hexahydrate (NiCl 2 ·6H 2 O), terephthalic acid (PTA) and copper foam were reductively phosphated under relatively mild conditions to prepare electrode materials with excellent supercapacitor performance - in situ growth of carbon-coated Ni on foam substrates 2 Porous nanoarrays of P (Ni 2 P / C@substrate). The material has good redox reversible properties.

The invention relates to a preparation method of a lithium ion battery positive electrode material, and belongs to the technical field of lithium ion battery electrode materials. The method comprisesthe following steps: adding 50mg-200mg of ferric chloride hexahydrate, 5mg-40mg of nickel chloride hexahydrate and 3mg-20mg of carbon nanotubes into a mixed solvent consisting of water and DMF, adding1-5ml of a sodium sulfide solution with the concentration of 0.1 M into the mixed solution, carrying out heating reflux, transferring into a hydrothermal kettle, carrying out hydrothermal reaction toobtain a hydrothermal reaction product, and carrying out microwave plasma treatment. The FeNiS2-CNTs material prepared by the method has good chemical properties, more active sites are exposed due toa relatively large graphitization defect degree, and the preparation method is environment-friendly, simple and convenient for large-scale production.

The invention discloses a preparation method of a nickel phthalocyanine / copper phthalocyanine / activated carbon Li / SOCl2 battery positive electrode catalytic material. The method comprises the following steps of respectively grinding and then mixing phthalic anhydride, pitch coke activated carbon, urea, ammonium molybdate tetrahydrate, nickel chloride hexahydrate and copper chloride dihydrate to obtain a mixture; putting the mixture into a crucible, carrying out solid-phase sintering at 110-290 DEG C, and cooling to room temperature to obtain a crude product; and grinding the crude product, purifying and drying to obtain the nickel phthalocyanine / copper phthalocyanine / activated carbon Li / SOCl2 battery positive electrode catalytic material. The prepared positive electrode catalytic materialhas the excellent catalytic performance for the Li / SOCl2 batteries.

The invention belongs to the technical field of catalysts and particularly relates to a preparation method of a magnetic heterogeneous photo-Fenton NiFe2O4 / ZnO composite nano material. The preparation method using nickel chloride hexahydrate, ferric trichloride hexahydrate, zinc acetate dihydrate, ethylene glycol monomethyl ether, ethanolamine, sodium hydroxide and deionized water as the raw materials includes: preparing the nickel chloride hexahydrate and the ferric trichloride hexahydrate into a mixed solution, and performing heating, separation, washing and drying on the mixed solution to obtain magnetic heterogeneous photo-Fenton NiFe2O4; dissolving the zinc acetate dihydrate into the ethylene glycol monomethyl ether while stirring to obtain a mixed solution, adding NiFe2O4 solid powder into the mixed solution, adding the ethanolamine and a dispersing agent while stirring, heating, separating, washing, and drying to obtain the magnetic heterogeneous photo-Fenton NiFe2O4 / ZnO composite nano semiconductor material. The material can achieve effective and fast absorption-photocatalysis to remove organic dye in water, can be recycled through magnets and is simple to prepare and reusable.

The invention discloses a preparation method of an iron-doped nickel phosphide composite nitrogen-doped reduced graphene oxide electro-catalytic material, and the method comprises the following steps:1) dissolving graphene oxide, carrying out ultrasonic treatment to obtain a uniform graphene oxide solution, adding melamine, stirring, and evaporating to obtain a light black solid; 2) putting the light black solid into a tubular furnace, heating and preserving heat in an inert atmosphere, cooling to room temperature, washing and drying to obtain nitrogen-doped reduced graphene oxide; 3) dissolving the nitrogen-doped reduced graphene oxide in deionized water to obtain a nitrogen-doped reduced graphene oxide solution; 4) adding urea, NH4F, nickel chloride hexahydrate and ferrous sulfate heptahydrate into the nitrogen-doped reduced graphene oxide solution, and uniformly stirring; 5) transferring the solution into a reaction kettle, centrifuging after reaction to obtain a dark green precipitate, washing and drying to obtain a precursor material, and 6) heating the precursor material in an inert atmosphere, keeping the temperature, and cooling to room temperature to obtain the catalyst.The preparation method is simple, low in cost and excellent in catalytic performance.

The invention belongs to the category of electrocatalytic hydrogen production catalytic material preparation, in particular to a preparation method of nickel oxide-supported sulfur-phosphorus-doped graphene composite electrocatalyst. Graphene oxide, phosphoric acid and sulfuric acid are uniformly mixed to form an aqueous solution, which is transferred to a hydrothermal kettle Hydrothermal reaction is carried out in the process to obtain sulfur and phosphorus doped graphene; after the sulfur and phosphorus doped graphene, nickel chloride hexahydrate and ethanol are mixed uniformly, hydrothermal is performed on it, and the obtained solution is subjected to suction filtration , washing, and drying to obtain a nickel oxide-supported sulfur-phosphorus-doped graphene composite electrocatalyst. The reaction conditions of the invention are simple, the operation is convenient, and the process flow is short; the prepared nickel oxide nanosheets have good dispersibility, suitable size and uniformity, and have excellent hydrogen evolution performance as an electrocatalytic hydrogen evolution electrode catalyst.

The invention discloses a flexible light and thin carbon cloth composite material with high electromagnetic shielding performance and a preparation method thereof. The flexible light and thin carbon cloth composite material is composed of carbonized cotton fabric and nickel single crystals growing on the carbonized cotton fabric in situ. The preparation method of the flexible light and thin carbon cloth composite material with the high electromagnetic shielding performance comprises the following steps: pretreating a cotton fabric with an alkaline solution, further modifying the surface of the cotton fabric with hydroxypropyl-beta-cyclodextrin, soaking the cotton fabric in a nickel chloride hexahydrate solution, and drying to obtain the flexible light and thin carbon cloth composite material with the high electromagnetic shielding performance. Drying and calcining to prepare the flexible, light and thin carbon cloth composite material with high electromagnetic shielding performance. According to the carbon cloth composite material, the combination of flexibility and high electromagnetic shielding performance is realized, the sheet resistance of the carbon cloth composite material can be as low as 0.6 omega / sq, the density of the carbon cloth composite material is light as 0.7056 g / cm < 3 >, the carbon cloth composite material has excellent conductivity, flexibility and electromagnetic shielding performance, and a new solution strategy is provided for the problem of electromagnetic wave pollution.

The invention discloses a phosphorus-modified nickel cobaltate-modified carbon nanotube electrode catalyst. The preparation method comprises the following steps of mixing cobalt chloride hexahydrate and nickel chloride hexahydrate into an ethanol solution containing ammonia water, adding a hydroxyl carbon nanotube, mixing and dispersing to obtain a precursor mixed solution, carrying out a hydrothermal reaction at 140 DEG C for 16 hours, filtering, washing and drying, and then carrying out heat treatment with sodium hypophosphite at 600 DEG C under the protection of nitrogen for 2 hours to obtain the catalyst. The electrode catalyst disclosed by the invention is based on phosphorus-modified nickel cobaltate nanoparticles with high intrinsic activity loaded on the carbon nanotubes, and has excellent catalytic performance of oxygen reduction, oxygen evolution and hydrogen evolution reaction. The preparation method is simple, low in cost and easy to popularize.

The invention belongs to the technical fields of electrochemistry and metal surface treatment, in particular relates to a nano-structure Ni-base composite electroplating solution containing nano Si3N4 particles and a preparation method thereof. Every 1L of the nano-structure Ni-base composite electroplating water solution containing nano Si3N4 particles comprises 5-12g of the nano Si3N4 particles, 160-220g of nickel sulfate hexahydrate, 42-57g of nickel chloride hexahydrate, 40-55g of boric acid, 1.6-5.0g of lauryl sodium sulfate, 0.1-1.0g of 1,4-butynediol and 0.8-5.0g of brightener, whereinthe nano Si3N4 particles are firstly subjected to surface chemical modification by using a lauryl sodium sulfate solution. A thin-film material produced by using the composite electroplating solutionprovided by the invention has the characteristics of favorable binding force with a substrate, favorable corrosion resistance, higher hardness and favorable wear resistance.

The invention relates to a complex catalyst for viscosity reduction of thick oil by hydrothermal catalytic cracking and application thereof. The complex catalyst is prepared by the following steps of: 1) selecting raw materials: selecting 2 to 3 mass parts of C12-C18 aliphatic carboxylic acid, 1 to 2 mass parts of ethylene dimine, 3 to 5 mass parts of sodium fluoroacetate, 1 to 2 mass parts of sodium hydroxide, 3 to 5 mass parts of nickel chloride hydrate and 140 to 180 mass parts of toluene; and 2) mixing the C12-C18 carboxylic acid and ethylene dimine, then heating to 160 to 180 DEG C in anoil bath and reacting for 2 to 3 hours, cooling to 90 to 95 DEG C, adding sodium chloroacetate-containing aqueous solution, stirring, reacting for 40 to 50 minutes and then adding NaOH, continuously reacting for 10 to 13 hours at the temperature of between 90 and 100 DEG C, finally adding the NiCl2.6H2O and the toluene, refluxing and splitting water for 3 to 5 hours and filtering, and performing reduced pressure desolvation on the filtrate to obtain the catalyst, wherein after the reaction is finished, the viscosity reduction rate of the thick oil reaches over 90 percent, and 9 to 15 percent of heavy component is cracked into a light component.

The invention discloses a nickel-phosphorus-oxygen micron spherical negative electrode material for a lithium-ion battery, a preparation method of the nickel-phosphorus-oxygen micron spherical negative electrode material and a negative electrode of the lithium-ion battery prepared from the nickel-phosphorus-oxygen micron spherical negative electrode material. The preparation method comprises the following steps of mixing choline chloride and urea, and heating and stirring a mixture to obtain a deep-eutectic solvent; adding a cationic surfactant, carrying out ultrasonic dissolving, sequentiallyadding nickel chloride hexahydrate and sodium dihydrogen phosphate and carrying out ultrasonic dissolving to obtain a reaction precursor solution; and heating and refluxing the reaction precursor solution, cleaning and drying to obtain the nickel-phosphorus-oxygen micron spherical negative electrode material for the lithium-ion battery, wherein main components of the nickel-phosphorus-oxygen micron spherical negative electrode material are Ni, Ni3P and NiO, and a large-size microsphere material of which the particle sizes are 0.2-0.5micron is formed by self-assembling of particles in the preparation process. The nickel-phosphorus-oxygen micron spherical negative electrode material for the lithium-ion battery has excellent electrochemical properties.

The invention discloses a carbon-doped double metal oxide material and a preparation method thereof. The preparation method of the present invention comprises the following steps: (1) heating and mixing ferric chloride hexahydrate, nickel chloride hexahydrate, ammonium chloride, gelatin and deionized water and then drying; (2) drying the After drying, the sample is carbonized at a low temperature under an inert atmosphere. After the low-temperature carbonization, the sample is soaked and etched with hydrochloric acid with a concentration of 0.8-2mol / L, and then dried by suction filtration; (3) The dried sample is carbonized at a high temperature under an inert atmosphere. After high-temperature carbonization, the sample was soaked and etched with hydrochloric acid with a concentration of 0.1-0.5mol / L, and then filtered and dried to obtain a carbon-doped double metal oxide material. The invention has low raw material cost and simple preparation method, and the obtained carbon-doped double metal oxide material has high specific surface area and relatively uniform pore size distribution, and has good application prospects in the fields of toxic gas adsorption and lithium batteries.