40 results about "Nickel chloride hydrate" patented technology

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 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 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.