1960 results about "Material synthesis" patented technology

The invention belongs to the fields of material synthesis and energy technology, and especially relates to a graphene/metal oxide composite cathode material for lithium ion batteries and a preparation method thereof. Grapheme is dispersed into various metal oxide precursor salt solutions; a graphene/metal oxide compound is obtained directly by a hydrothermal method, or an graphene/metal oxide compound is obtained by a liquid in-situ polymerization method or a coprecipitation process; and the graphene/metal oxide compound is obtained by heat treatment or hydrothermal treatment. In the invention, the novel three-dimensional composite cathode material of graphene-coated metal oxide or graphene-anchored metal oxide is prepared by carrying metal oxide particles with graphene as a carrier. The obtained composite material can be used as a lithium ion battery cathode, which has a high specific capacity, excellent cycle stability and rate capability, and is expected to be used as a lithium ion battery cathode material with a high energy density and a high power density.

Compounds, and oligomers of the compounds, are synthesized with cyclic amine ligands attached to a metal atom. These compounds are useful for the synthesis of materials containing metals. Examples include pure metals, metal alloys, metal oxides, metal nitrides, metal phosphides, metal sulfides, metal selenides, metal tellurides, metal borides, metal carbides, metal silicides and metal germanides. Techniques for materials synthesis include vapor deposition (chemical vapor deposition and atomic layer deposition), liquid solution methods (sol-gel and precipitation) and solid-state pyrolysis. Suitable applications include electrical interconnects in microelectronics and magnetoresistant layers in magnetic information storage devices. The films have very uniform thickness and high step coverage in narrow holes.

Silicon based anode active materials are described for use in lithium ion batteries. The silicon based materials are generally composites of nanoscale elemental silicon with stabilizing components that can comprise, for example, silicon oxide-carbon matrix material, inert metal coatings or combinations thereof. High surface area morphology can further contribute to the material stability when cycled in a lithium based battery. In general, the material synthesis involves a significant solution based processing step that can be designed to yield desired material properties as well as providing convenient and scalable processing.

The invention relates to a spinel nickel manganese acid lithium and layered lithium-rich manganese-based composite cathode material with a core-shell structure and a preparation method thereof, which belongs to the technical field of material synthesis. The prepared lithium ion composite cathode material takes a layered lithium-rich manganese-based Li[Lia(NixCoyMnz)]O2 as a core material, takes spinel nickel manganese acid lithium LiNi0.5Mn1.5O4 as a shell material; a coprecipitation method is employed to obtain a core-shell precursor, the core-shell precursor and the lithium source are uniformly mixed and calcined to obtain the spinel nickel manganese acid lithium and layered lithium-rich manganese-based composite cathode material with the core-shell structure. According to the invention, the layered lithium-rich manganese-based is taken as the core material, and the spinel nickel manganese acid lithium is taken as the shell material; under the prerequisite that material gram capacity is kept, material structural stability is increased, material cycle, multiplying power and safety performances are improved, function composite and complementation of the core material and the shell layer material can be realized, and the problem that high capacity and high security can not be achieved simultaneously is solved. The composite cathode material has the advantages of simple process and obviously increased performance.

The invention discloses a method for preparing semi-aromatic nylon and belongs to the technical field of macromolecular material synthesis. The method comprises the following steps: (1) uniformly mixing aliphatic diamine and water of which the weight is two to ten times that of the aliphatic diamine, heating the mixture to the temperature of between 50 and 90 DEG C, adding aromatic diacid into the mixture with stirring till a pH value of the solution reaches 7.0-7.7, continuously stirring for 1 to 5 hours, cooling the solution to room temperature, continuously stirring the solution for 1 to 5 hours again, and filtering and drying to obtain nylon salt for later use; and (2) adding the prepared nylon salt and a solvent to a polymerization kettle in a certain mixture ratio (0.5 to 3.0 g/mL), raising the temperature to between 190 and 230 DEG C under the protection of inert gas, keeping the pressure in the kettle between 2.0 and 3.0 MPa, discharging gas after 1 to 5 hours to make the pressure in the kettle reduced to normal pressure within 1 to 5 hours, raising the temperature to between 210 and 270 DEG C, and continuing to react for 1 to 5 hours, and discharging to obtain a powdery semi-aromatic nylon product. The method has mild reaction condition and low energy consumption; the product is easy to mold and machine; and the method solves the difficult problem of difficult discharging of the semi-aromatic nylon, and is applicable to industrialized production.

The invention discloses a luminescent material of a series of fluorene derivatives. A structure of the material is as shown in formula I. The material as shown in formula I is easily dissolved in an organic solvent, is good in heat stability and can be used to prepare a luminescent device in a way of fluid manufacturing procedures such as printing, instilling, coating and printing. An organic electroluminescent device prepared by coating the material has the characteristics that the power efficiency is good, the material utilization rate is high, the manufacturing cost of an OLED device is greatly decreased, and the material synthesis and purification method is simply suitable for mass production, so that the luminescent material is an ideal choice of the organic electroluminescent device luminescent material. Utilizing the organic electroluminescent diode material as a main body material or a doping material in a luminescent layer or independently as a luminescent material or a hole transmission material or an electron transmission material also falls within a protection scope (see the specification).

This invention relates to a preparation method of coated controlled release fertilizer for the vegetable, which includes the liquid membrane material synthesis and fertilizer's parcel process. It select natural, environmental protecting and high polymer of polyvinyl alcohol and starch as the main material, by adding modifiers, surfactants, foam remove agent, water-retaining agent, inhibitors and carrier trace elements to made coated liquid material; in particular, simple conditions, add the inorganic mine powder wrapped fertilizer drops, made a environment-friendly, multi-purpose, capsule controlled and slow-release fertilizer that not only can control nutrients releasing, but also can improve soil physical and chemical nature. The efficiency up to 80 ~ 100 days, one crop fertilizer can meet the nutrient demand of entire reproductive life, and effectively improve the utilization of fertilizers, reducing pollution, saving energy.

The present invention belongs to the field of material synthesis technology, and is especially modified no-adhesive ZSM-5 zeolite catalyst and its preparation process and application in catalyzing the dewatering of dilute alcohol solution to prepare ethylene. The catalyst is prepared with no-adhesive ZSM-5 zeolite as basic material and through one modification process combining high temperature water vapor and acid treatment. The catalyst has high content of effective component ZSM-5 zeolite, high molecule diffusion, high crystallization degree, opened channels and great specific surface area. In catalyzing the dewatering of dilute alcohol solution to prepare ethylene, the catalyst has high catalytic activity, low reaction solution ethanol concentration, low reaction temperature, high ethanol converting rate, high ethylene selectivity and high space velocity.

Devices and methods for manufacturing devices for treating degenerated and/or traumatized intervertebral discs are disclosed. Artificial discs and components of discs may include an artificial nucleus and/or an artificial annulus and may be comprised of shape memory materials synthesized to achieve desired mechanical and physical properties. An artificial nucleus and/or annulus according to the invention may comprise a first and second reservoir and one or more fluids, wherein upon application of a load upon the artificial nucleus and/or disc, the one or more fluids enters said second reservoir from said first reservoir.

The invention belongs to the technical field of polymer material synthesis and preparation, relating to a star-shaped comb butadiene/styrene segmented copolymer, which is characterized in that the copolymer has the following structure: An-C, wherein A is the butadiene/styrene segmented copolymer, C is star-shaped seed tree coupler residue which is an epoxidation liquid star-shaped copolymer, n is branching degree which is larger or equal to 3, the number average molecular weight of the star-shaped comb segmented copolymer An-C is 5*10<4>-50*10<4>, the number average molecular weight of the segmented copolymer A is 1*10<4>-15*10<4>, the content of styrene is 55 percent to 85 percent (weight percent, same below), the content of butadiene is 15 percent to 45 percent, the content of 1, 2-structure is less than 30 percent (weight percent, which is counted by 100 percent of the total amount of monomer butadiene). The synthesis has the effect and benefit of simplifying the synthetic route of the star-shaped comb butadiene/styrene segmented copolymer, which can be widely applied to the preparation of the star-shaped comb butadiene/styrene segmented copolymer.

The invention relates to a mordenite/beta zeolite/Y zeolite coexisting material and a method for synthesizing the same, and mainly solves the problems that a porous material synthesized by the prior art is single in pore-size, weak in acid and low in activity. The method prepares the mordenite/beta zeolite/Y zeolite coexisting material by adding a seed crystal containing a Y zeolite precursor during a synthesis process of mordenite/beta zeolite/Y zeolite coexisting material. A mole relation of the components of the synthesized mordenite/beta zeolite/Y zeolite coexisting material is nSiO2 :Al2O3, wherein n is between 4 and 400; the XRD diffraction pattern of the mordenite/beta zeolite/Y zeolite coexisting material comprises a technical proposal that a maximum value of a distance d is at positions between 14.52-0.1 and 14.52+0.1 A, 13.52-0.1 and 13.52+0.1 A,11.32-0.1 and 11.32+0.1 A, 8.96-0.1 and 8.96+0.1 A, 6.71-0.1 and 6.71+0.1 A, 5.71-0.1 and 5.71+0.1 A, 4.51-0.05 and 4.51+0.05 A, 4.15-0.05 and 4.15+0.05 A, 3.97-0.05 and 3.97+0.05 A, 3.78-0.05 and 3.78 +0.05 A, 3.51-0.05 and 3.51+0.05 A, 3.02-0.05 and 3.02+0.05 A, and 2.86-0.1 and 2.86+0.1 A; therefore, the problems are solved well. The mordenite/beta zeolite/Y zeolite coexisting material can be used in the industrial production of ethylene and propylene through the catalytic pyrolysis of naphtha.

The invention discloses a making method of chrysolite-structured ferric lithium phosphate, which is characterized by the following: mixing the bivalent Fe source compound, P source compound and oxidant at LiFePO4 chemical gauge; controlling the pH value equal to 1-8; filtering; cleaning; drying; generating about 100 nm FePO4 pioneer body; putting the mixture of FePO4 pioneer body and Li source compound and reducer in the furnace; calcining the mixture in the non-oxidized atmosphere to make LiFePO4. The invention prevents the ferrous ion from oxygenizing and difficult blending of raw material, which improves the material synthesis and property to cover the residual carbon on the LiFePO4 particle.

The invention relates to a method for preparing a nano-sulfur / graphene oxide composite material with high specific capacity and belongs to the field of cross application of material synthesis and electrochemical power supplies. The nano-sulfur / graphene oxide composite material is applicable to an electrode material of a lithium sulfur secondary battery with the high specific capacity. The method is characterized by comprising the following steps of: synthesizing nano-sulfur particles by using a simple chemical method under the protection of a surfactant; and uniformly attracting graphene oxide and a carbon material to the surfaces of the nano-sulfur particles by interaction of the surfactant and the graphene oxide to form a core-shell type nano-sulfur / graphene oxide composite material. The graphene oxide and the carbon material coat a sulfur surface, so a sulfur electrode material is stable in structure, high in electric conductivity and high in cycle performance. Environmentally-harmful materials are not employed, and the method can be implemented at low temperature, and is low in energy consumption in the synthesis process and low in equipment requirement. The synthesized material is high in charging/discharging capacity, non-toxic and harmless to a human body, and sulfur is abundant in nature, so the material has a good industrial prospect and can be applied to large-scale industrial production.

This invention discloses a method for synthesizing organic-inorganic bentonite composite. The method comprises: utilizing bentonite as the main material, performing inorganic modification through cation-exchange reaction by using hydroxyl aluminum aqueous solution, torrefying to obtain hydroxyl-containing aluminum-pillared bentonite with high porosity and high specific surface area, and reacting between the hydroxyls and silylation agent to graft silane groups onto aluminum-pillared bentonite and obtain organic-inorganic bentonite composite. The organic-inorganic bentonite composite has both the advantages of inorganic pillared bentonite such as high porosity and high specific surface area, and those of organic bentonite such as high organic carbon content and high hydrophobicity thus can be used to treat organic waste gases and wastewater with a good effect by surface adsorption as well as distribution.

The invention relates to an inorganic porous material synthesis technology field, and concretely relates to a method for preparing hollow mesoporous lamella spherical silica material. In a mixed solvent of alcohol and water, under the catalytic action of ammonia, using a cationic surface active agent of cetyl trimethyl ammonium bromide as a mesoporous template, the inorganic silicon material self-assembles to be mesoporous uniform spheres on the polyphenylacetylene sphere surface, the surface active agent and the polyphenylacetylene sphere are deprived in high temperature environment, the hollow silica spheres with uniform size from micron to millimeter and mesoporous lamella are obtained. The specific surface area of the obtained hollow silica sphere is 800-2000m<2>/g, the bore diameter is 1.8-3.5nm, and the bore volume is 0.5-0.8 ml/g.

The invention belongs to the technical field of chemical material synthesis and electrochemistry and particularly relates to a method for preparing composite materials and black phosphorus of negative electrode materials of a high-capacity lithium-ion battery. According to the method, the black phosphorus of negative electrode materials of the high-capacity lithium-ion battery is synthesized by a high-pressure synthesis method. On one hand, a high-pressure synthesis device is adopted, white phosphorus and red phosphorus are respectively used as raw materials, and pure-phase black phosphorus is synthesized at different pressures and temperatures; on the other hand, the white phosphorus and the red phosphorus are used as raw materials, modified materials are doped, modified black phosphorus is synthesized, the raw materials account for 10 to 90 percent, and the modified materials account for 5 to 50 percent. The black phosphorus prepared by the method is used as the negative electrode materials of the lithium-ion battery, the specific capacity is 3 to 7 times of that of the industrialized graphite negative electrode, the tap density of the black phosphorus negative electrode materials reaches 1.7 to 2.4g/cm<3> and is 2 to 3 times of that of the graphite negative electrode, and the black phosphorus negative electrode has good compatibility with the existing electrolyte and is hopeful to become a new generation of negative electrode materials of the high-capacity lithium-ion battery.

Methods and apparatus may permit the generation of consistent output synthesis gas from highly variable input feedstock solids carbonaceous materials. A stoichiometric objectivistic chemic environment may be established to stoichiometrically control carbon content in a solid carbonaceous materials gasifier system. Processing of carbonaceous materials may include dominative pyrolytic decomposition and multiple coil carbonaceous reformation. Dynamically adjustable process determinative parameters may be utilized to refine processing, including process utilization of negatively electrostatically enhanced water species, process utilization of flue gas (9), and adjustment of process flow rate characteristics. Recycling may be employed for internal reuse of process materials, including recycled negatively electrostatically enhanced water species, recycled flue gas (9), and recycled contaminants. Synthesis gas generation may involve predetermining a desired synthesis gas for output and creating high yields of such a predetermined desired synthesis gas.

The invention relates to a BiOI-graphene visible light catalyst and a preparation method thereof, belonging to the technical field of inorganic material synthesis and photocatalysis. BiOI and graphene are in the shape of a slice, and the graphene is 1.0%-3.0% by weight. The preparation method of the BiOI-graphene visible light catalyst comprises the following steps of: firstly ultrasonically dispersing graphite oxides into ethanol; then stirring, and adding a certain amount of sodium iodide or potassium iodide water solutions and bismuth nitrate glacial acetic acid solutions at the same time; transferring suspending liquid into a high-pressure reaction kettle with a polytetrafluoroethylene liner, and carrying out crystallization reaction at 120-150 DEG C for 6-12 hours; filtering, washing and drying obtain solid products so as to finally obtain the BiOI-graphene compound light catalyst. The preparation method has environment friendliness and simple process; and the prepared BiOI-graphene visible light catalyst has very high visible light catalytic activity and potential application value in a control technology decomposing organic pollutants by utilizing solar photocatalysis.