966results about How to "Easy to achieve large-scale production" patented technology

The invention discloses a silicon oxide/carbon cathode material of a lithium ion battery and a preparation method of the material. The silicon oxide/carbon cathode material is a three-layer compound material with a core-shell structure and takes a graphite material as an inner core, porous silicon oxide as a middle layer and organic pyrolytic carbon as an outermost covering layer; and the preparation method comprises a process of preparing porous SiOx and a carbon covering process. Compared with the prior art, active metal is added to reduce SiOx partially, the volume expansion effect of silicon particles is greatly reduced as the volume expansion effect of the silicon particles in the charging and discharging processes can be automatically absorbed by the obtained product structure, and the initial charging and discharging efficiency and the cycling stability are remarkably improved. The initial reversible specific capacity is larger than 600 mAh/g, the initial charging and discharging efficiency is higher than 88%, the capacity retention ratio is higher than 98% after the capacity is cycled for 50 times, the synthetic process is simple and easy to operate, the manufacturing cost is low, and the large-scale production is easy to realize.

The invention discloses a flexible pressure sensor which comprises an induction layer, a substrate layer, an isolation layer and electrodes. The isolation layer is positioned between the induction layer and the substrate layer and bonded to the induction layer and the substrate layer, and enables electric contact between the induction layer and the substrate layer to be isolated discontinuously; the surface of the induction layer is provided with a first conductive layer, the surface of the substrate layer is provided with a second conductive layer, and the first and second conductive layers are bonded to the isolation layer in opposite directions; and the electrodes are led out of the first or second conductive layer and connected with an external circuit. The flexible pressure sensor is used to detect the size and fluctuation of pressure, a flexible conductive material on the specific substrate is bonded to other conductive substrate, the electrodes are led out, change of resistance between the electrodes is measured, and the size and fluctuation of the pressure is detected in directly. The pressure sensor of high flexibility and high reliability can be applied to a flexible bearing body, technology is simple, and the sensor can be compatible with a present processing technology of a resistant screen to realize scaled production and application.

The invention relates to a preparation method of a high-performance carbon nanotube fiber, which comprises the following specific steps of: drawing a carbon nanotube film from a spinning carbon nanotube array; then, immersing the carbon nanotube film in a thermosetting polyamic acid/N-methyl pyrrolidone solution, and twisting to form a carbon nanotube/polyamic acid composite fiber; subsequently, curing the carbon nanotube/polyamic acid composite fiber so that polyamic acid in the composite fiber forms polyimide with a net type crosslinking structure; and finally preparing the carbon nanotube/polyimide composite fiber. The invention has the advantages of simple and easy process, low cost and easy realization of large-scale production; moreover, the prepared carbon nanotube composite fiber has excellent mechanical performance, the strength can reach 2.06 GPa, the tenacity is superior to that of carbon fiber, and the conducting property is maintained unchanged as compared with that of pure carbon nanotube fiber; meanwhile, the carbon nanotube composite fiber also has the operability of common yarn, so that the requirements on subsequent treatment processes of stretching, stranding, weaving and the like can be satisfied.

The invention relates to a SiOx-based composite material, a preparation method and a lithium ion battery. The SiOx-based composite material comprises a SiOx/C material, wherein the SiOx/C material comprises SiOx nano particles, organism cracked carbon, nano conductive particles and amorphous conductive carbon layers, the SiOx nano particles, the organism cracked carbon and the nano conductive particles are wrapped in the amorphous conductive carbon layers, the SiOx/C material is in a spherical shape and comprises a porous structure, and x is more than or equal to 0.5 and less than or equal to 1.3. The composite material is used as a negative electrode material of the lithium ion battery, excellent in cycling performance, excellent in rate performance and low in size expansion effect, applicable to the fields such as top-grade digital electrons, electric tools and next-generation vehicle-mounted devices and wide in market prospect.

The invention discloses a method for preparing phosphaalkene. The method comprises the following steps: dispersing black phosphorus into a dispersion liquid, and performing ultrasonic treatment for 0.5-200 hours and then performing solid-liquid separation to obtain intercalation black phosphorus; dispersing the intercalation black phosphorus into a chemical foaming agent solution, performing ultrasonic treatment for 0.5-200 hours and then performing solid-liquid separation, and drying solids subjected to solid-liquid separation to obtain a solid mixture of black phosphorus and a chemical foaming agent; performing microwave treatment on the solid mixture of black phosphorus and the chemical foaming agent under the microwave powder of 100-1,000W, and preparing a finished product phosphaalkene after 1s-1h of microwave treatment. The phosphaalkene prepared by the method disclosed by the invention is proper and uniform in size; furthermore, the technology is simple, the cost is low, the peeling time is short, and the phosphaalkene yield is high; large-scale production is easy to realize.

The invention relates to a monox/carbon composite material, comprising monox/graphene particles, organic matter pyrolysis carbon and graphite powder, wherein monox particles are adhered to the surface of a grapheme sheet; the organic matter pyrolysis carbon coats the monox/ graphene particles, and then is compounded with graphite. The preparation method of the monox/carbon composite material comprises the steps of: mixing monox particles with graphene to obtain the monox/graphene particles; coating organic carbon by obtained monox/graphene particles, thereby obtaining the monox/graphene material coated by the organic matter pyrolysis carbon; and mixing the obtained monox/graphene material coated by the organic matter pyrolysis carbon with the graphite powder, so as to obtain the monox/carbon composite material. The monox/carbon composite material is used as a lithium ion battery cathode material. Thus, the monox/carbon composite material has the characteristics of high first charge and discharge efficiency, excellent cycle performance and power charge and discharge properties, and low volume expansion effect.

The invention discloses a preparation method of a metallic oxide/N-doped carbon nano tube composite material. The preparation method comprises the following steps of: (1) ultrasonically dispersing an N-doped carbon nano tube in a mixed solution of water and alcohol to obtain a solution A; (2) under the condition of stirring, dripping a solution B into the solution A, and stirring to obtain a mixed solution, wherein the solution B is water and/or alcoholic solution containing metal ions; and (3) carrying out solid-liquid separation on the mixed solution, and washing, drying and roasting to obtain the metallic oxide/N-doped carbon nano tube composite material. The invention also provides the composite material obtained through the method and an application thereof. According to the preparation method disclosed by the invention, as a method of solution phase synthesis under the condition of room temperature is adopted, hydrothermal reaction and solvothermal reaction with high temperature and high pressure are avoided, and the composite material with tighter combination of the metallic oxnide and the /N-doped carbon nano tube can be obtained. By adopting the preparation method, the preparation cost is low, the operation is simple, the preparation condition is mild, and the reaction period is also short.

The invention discloses an ultra-long single crystal V2O5 nano wire/graphene anode material and a preparation method, and belongs to the field of lithium ion battery electrode materials and preparation thereof. The V2O5 nano wire/graphene anode material consists of a two-dimensional graphene nano sheet and one-dimensional V2O5 nano wires, wherein the ultra-long single crystal V2O5 nano wires are regularly distributed on the surface and the interlayer of the transparent graphene nano sheet to form a sandwich structure. The preparation method comprises the following steps of: dispersing vanadium oxide powder and merchant graphite into deionized water, adding an oxidant, fully stirring mixture uniformly, performing ultrasonic treatment, putting the mixture into an autoclave, keeping the mixture for certain time at a certain temperature, and performing vacuum drying to obtain the ultra-long single crystal V2O5 nano wire/graphene composite anode material. The invention has the advantages that: the first discharge capacity, the magnification performance and the electrochemical cyclical stability of the composite anode material are remarkably improved. The method is simple, environment-friendly, convenient for operation and easy to realize large-scale production.

The refrigerating system includes compressor unit in lubricant separator, cooler, heat returning unit, throttling control unit set, evaporator unit and controller unit. The input parameters of the controller unit include air admission pressure and exhaust pressure of compressor in refrigerant system and/or exit temperature of the evaporator; the output parameters are in the commands of opening and closing the throttling control unit set. The throttling control unit set includes main controllable throttle element A, auxiliary controllable throttle element B and by-pass controllable throttle element C. For cryogenic mixed work medium throttling refrigerating system with different operation states, the control method includes comparing preset value and the input parameter and controlling the opening and closing and flux of throttle element to realize the control of circulating work medium flow rate and ultimate stable and reliable operation of refrigerator in different work conditions.

The invention relates to battery grade iron and manganese phosphate and a preparation method thereof. The chemical composition of the battery grade iron and manganese phosphate is MnxFe(1-x)PO4, wherein x is greater than or equal to 0.1 and smaller than or equal to 0.9; the preparation method comprises the steps of adopting a hydrothermal oxidation-coprecipitation technology, putting a soluble phosphorus source, iron source and manganese source solution into a reaction kettle according to the chemical composition MnxFe(1-x)PO4 of the iron and manganese phosphate, adding a surfactant and nitric acid, controlling the system pH value to be within 1 to 4, stirring for 2 to 48 h at 100 to 250 DEG C, so as to perform hydrothermal reaction, obtaining turbid liquid containing MnxFe(1-x)PO4.yH2O precipitate, naturally cooling the turbid liquid to room temperature, filtering, washing and drying, obtaining MnxFe(1-x)PO4.yH2O, performing high-temperature roasting at 250 to 700 DEG C, and then obtaining the battery grade iron and manganese phosphate not containing crystal water. The method is simple and practicable, and is easy to realize scale production, the prepared iron and manganese phosphate has the advantages that size distribution is uniform, the purity is high, and iron and manganese elements realize atomic-scale uniform distribution, and the battery grade iron and manganese phosphate a belongs to the optimal precursor for preparing lithium ferric manganese phosphate battery materials.

The invention relates to a lithium titanate/titanium black anode material and a preparation method thereof belonging to the technical field of lithium ion batteries. The lithium titanate/titanium black anode material has a chemical formula of (1-0.8x)Li4Ti5O12-xTi4O7, wherein x is more than 0,03 and is not more than 0.30. The lithium titanate/titanium black anode material can be synthesized by adopting two methods, the first method is as follows: lithium titanate is carbonized in vacuum, a compact titanium black high-conductive membrane is formed on the surface of the lithium titanate through controlling temperature, reaction time and pressure to have higher multiplying power performance; and the second method is as follows: Ti4O7 is directly added in the lithium titanate, and the lithium titanate/titanium black anode material is synthesized under an inert atmosphere at high temperature. The lithium titanate/titanium black anode material has a simple manufacture process and is beneficial to industrialized production. Compared with the current marketized anode material, the lithium titanate/titanium black anode material has higher electrical conductivity and corrosion resistance and higher large-current discharge cycling performance; and multiplying power charge and discharge performances and cycling performance of a lithium ion power battery can be further improved.

The invention relates to a method preparing a copper catalyzer used for dimethyldichlorosilance synthetic reaction through a liquid phase ball-milling partial reduction method. The method includes the steps of taking copper oxide as raw material, adding solvent media containing reducing substances, enabling copper oxide particles to become small and achieve partial reduction through mechanical ball-milling, obtaining the copper-based catalyzer containing the ternary components of copper, cuprous oxide, copper oxide after suction filtration, drying and smashing, and obtaining the ternary copper catalyzer with adjustable components and controllable particles through adjusting the parameters of reducing agent types, concentration and ball-milling conditions. In catalytic reaction of organosilicone monomer synthesis, the catalyzer is high in catalytic activity and selectivity and helpful for improving the processing ability of an existing organosilicone monomer device, reduces production cost, and improves the yield of target products. The method preparing the catalyzer through the liquid phase ball-milling partial reduction method is simple in process, mild in condition and convenient to operate, and brings convenience to achieve large scale production.

The embodiment of the invention provides a porous negative pole piece which comprises a porous current collector and an active substance deposited in a hole of the porous current collector, wherein the active substance is one or more of Si, Sn, Al, Sb, Ge, Zn, Pb, Mg, and Na, the hole is a through hole, and the active substance is deposited on the inner wall of the hole. The negative pole sheet is high in capacity and stable in structure, so that the system capacity of a lithium ion battery is finally increased, and the recycling service life of the battery is prolonged. The embodiment of the invention further provides a preparation method of the porous negative pole sheet, and the lithium ion battery comprising the porous negative pole sheet.

A vegetable oil-type asphalt recycling agent is composed of component A and component B, wherein the component A is one or two selected from asphalt and residual oil; and component B is a composition of vegetable oil and an alcohol, a composition of vegetable oil and a thermoplastic elastomer, or vegetable oil or vegetable oil prepolymer; and based on the total weight of the asphalt recycling agent, the content of component A is 40-95 % by mass, and the content of component B is 5-60% by mass. The present invention also discloses a method for preparing the vegetable oil-type asphalt recycling agent.

The invention relates to a preparing method for fine sheet metal magnetically soft alloy powder and belongs to the technical field of metal and alloy powder preparation. The method comprises the steps that two or three of Fe, Si, Al, Ni and Mo are selected as raw materials to carry out alloy distributing; a medium-frequency induction furnace is adopted for carrying out alloy smelting; a two-flow atomization method is adopted for carrying out atomizing on a melt, and alloy powder approximately spherical is prepared; by means of mechanical milling, flattening is carried out on the alloy powder; annealing treatment is carried out on the obtained sheet powder, and by means of an ultrasonic vibrating sieve, the fine sheet metal magnetically soft alloy powder is prepared. The powder prepared through the method, the granularity ranges from 10 micrometers to 100 micrometers, the average thickness ranges from 0.1 micrometer to 5 micrometer, the radial thickness ratio ranges from 50 to 500, and the powder flattening rate reaches 90%. According to the method, the powder preparing process is simple, the production efficiency is high, the production cost is low, the quality of the magnetically soft powder core can be effectively improved, and the manufacturing cost is reduced.

The invention relates to a preparation method for directly producing enoxaparin sodium from crude product heparin sodium. The preparation method comprises the following steps of: taking the crude product heparin sodium as a raw material, performing fractionated precipitation through an organic solvent to remove most of impurities in the crude product heparin sodium, and then removing part of residual impurity proteins, pigments and other impurities by oxidation through hydrogen peroxide so as to get the high-purity heparin sodium which is in line with the production requirements of the enoxaparin sodium; and taking the high-purity heparin sodium as an intermediate product, preparing a heparin quaternary ammonium salt, preparing heparin benzyl ester, performing alkaline depolymerization on the heparin benzyl ester, neutralizing with an acid, performing alcohol precipitation, refining, decoloring, dehydrating and drying to get an enoxaparin sodium finished product. By adopting the method disclosed by the invention, the use of the organic solvent is greatly reduced, the production efficiency is improved, the influences on the environment are reduced, the enoxaparin sodium finished product which achieves or is better than European Pharmacopoeia 7.0 version is obtained, and the method is simple to operate and can realize industrialized production.

The invention discloses a method for quickly forming a soft power lithium-ion cell. The method comprises the following steps: (S1) supplying a heat source for heating a cell by using a heating plate;(S2) driving a pressurizing plate to pressurize the cell by using a servo motor; (S3) performing gradient charging on the cell; and (S4) charging the cell till reaching high charge state. According tothe invention, a stable, compact and uniform SEI film is formed on a cathode surface, the performance of the lithium-ion cell is greatly promoted, the early failure of the lithium-ion cell in the circulating process is avoided, the yield of the cell is increased, the cell quality is optimized, the forming time of the cell is shortened, the large-scale production of the cell is realized and the method has wide application prospect.

The invention relates to a preparation method of a mullite-fibrofelt-reinforced SiO2-Al2O3 aerogel composite heat-insulating material, which comprises the following steps: by using surface-pretreated mullite fibrofelt as a reinforcer, tetraethyl orthosilicate as a silicon source, cheap inorganic aluminum salt as an aluminum source and epoxide as a network formation agent, uniformly mixing, and carrying out sol-gel, aging and supercritical drying to obtain the mullite-fibrofelt-reinforced SiO2-Al2O3 aerogel composite heat-insulating material. In the preparation process, no catalyst is needed, and a one-step method is adopted to greatly optimize the preparation technique. Thus, the heat-insulating material has the advantages of low cost, smooth surface and controllable thickness, and can resist the temperature of 1200 DEG C in an air atmosphere. The room temperature thermal conductivity is 0.023-0.027 W.m<-1>K<-1>, and the apparent density is 0.18-0.22 g/cm<3>. The method has the advantages of simple materials, low cost and simple technique, is simple to operate in the technical process, and can easily implement large-scale production.