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106results about How to "Facilitate the commercialization process" patented technology

Catalyst with dispersed single platinum atoms and preparation method of catalyst

The invention relates to a catalyst with dispersed single platinum atoms and a preparation method of the catalyst, and aims at solving the technical problems that a precious metal oxygen reduction catalyst is high in preparation cost and low in utilization rate of platinum in the prior art. The catalyst with dispersed single platinum atoms is prepared by stirring, refluxing, evaporating, drying and grinding a carbon support, a nonmetal heteroatom reagent and a platinum compound as raw materials, and carrying out high-temperature treatment and interaction in a sliding rail furnace. A test result shows that the platinum element in the catalyst exists in a form of single atoms platinum; the catalytic activity is high; in acid and alkaline systems, the initial oxygen reduction potential and the half-wave potential are equivalent to those of a commercial carbon-supported platinum catalyst with the platinum content of 20%; other metal impurities are not introduced in the preparation process; and the stability is relatively good. The preparation method of the catalyst provided by the invention is relatively low in cost, simple and feasible. The catalyst is suitable for preparation of a fuel cell; the utilization rate of the platinum is greatly improved; the cost of the catalyst is reduced; and the commercialization process of the fuel cell can be promoted.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI

Nitrogen-doped graphdiyne riveted transition metal monatomic catalyst as well as preparation method and application thereof

The invention discloses a nitrogen-doped graphdiyne riveted transition metal monatomic catalyst as well as a preparation method and application thereof. According to the catalyst, nitrogen atoms are doped in a novel carbon material graphdiyne carrier, transition metal single atoms are riveted on the surface of nitrogen-doped graphdiyne through the covalent effect between the transition metal single atoms and N and C atoms, and thus transition metal is uniformly dispersed on the surface of the nitrogen-doped graphdiyne in a single atom form to form the catalyst. Transition metal atoms in the catalyst are uniformly dispersed on the surface of the nitrogen-graphdiyne-based catalyst in a single atom state, a large number of active sites are provided for oxidation-reduction reaction, graphdiyneis adopted as a carbon substrate and has excellent morphological characteristics, formation of catalytic active sites is facilitated, and catalytic advantages of single atoms are brought into play. The catalyst disclosed by the invention has high electrocatalytic activity on oxygen reduction under an alkaline condition, is simple and effective in preparation process, low in cost and easy to popularize and put into production, and has important significance in the field of fuel cell development and application.
Owner:NANJING NORMAL UNIVERSITY

Lithium-rich positive electrode modified material of lithium ion battery and preparation method of lithium-rich positive electrode modified material

The invention relates to a lithium-rich positive electrode modified material of a lithium ion battery and a preparation method of the lithium-rich positive electrode modified material, and belongs to the technical field of a positive electrode material of the lithium ion battery. The lithium-rich positive electrode modified material comprises a positive electrode material and a three-class metal oxide cladding material, wherein the cladding material is TiO2, MnO2 or Al2O3. The preparation method comprises the steps of performing water bath stirring and heating to obtain gel by a sol-gel method, performing drying to obtain dried gel, respectively performing low-temperature pre-sintering and high-temperature calcination, obtaining the positive electrode material after cooling and grinding, dispersing the prepared positive electrode material and TiO2 and MnO2 cladding materials in deionized water, performing constant-temperature stirring, and performing standing, filtering, washing, drying and calcination to obtain the lithium-rich positive electrode modified material of the lithium ion battery. While for Al2O3, a liquid phase cladding method is adopted, the positive electrode material is dispersed in an aluminum nitrate nonahydrate solution, and the required modified material is obtained after constant-temperature stirring, standing, filtering, washing, drying and calcination. The preparation method is simple and easy to operate, the lithium-rich positive electrode modified material obtained through preparation is uniform in particle grain distribution and high in crystallinity, and the rate performance and the cycle performance of the material after cladding both are obviously improved.
Owner:JIANGNAN UNIV

Lithium ion battery lithium-enriched cathode material, and improving method thereof

The invention relates to a lithium ion battery lithium-enriched cathode material, and an improving method thereof, and belongs to the technical field of lithium ion batteries cathode material. The lithium ion battery lithium-enriched cathode material comprises a cathode material, and three commercial lithium ion cathode clad materials including LiCoO2, LiMn2O4, or LiFePO4. According to a preparation method, sol-gel method and water batch stirring heating are adopted so as to obtain a gel; drying is adopted so as to obtain a dried gel; low temperature presintering and high temperature sinteringare adopted respectively, and cooling and grinding are adopted so as to obtain the cathode material; the obtained cathode material and LiCoO2 and LiMn2O4 clad materials are dispersed in deionized water, constant temperature stirring, standing, filtering, washing, drying, and sintering are adopted so as to obtain the lithium ion battery lithium-enriched cathode material; liquid phase cladding is adopted for LiFePO4, the cathode material is dispersed in an aluminum nitrate enneahydrate solution, constant temperature stirring, standing, filtering, washing, drying, and sintering are adopted so asto obtain the needed modified material. The preparation method is simple; operation is convenient; the obtained lithium ion battery lithium-enriched cathode material is uniform in particle size distribution, high in degree of crystallization; the rate capability and the circulating performance of the obtained material after cladding are improved obviously.
Owner:JIANGNAN UNIV

Anion/cation-doped and modified lithium ion battery (4:4:2)type ternary cathode material and preparation method thereof

The invention relates to an anion / cation-doped and modified lithium ion battery (4:4:2)type ternary cathode material and a preparation method thereof, which belong to the lithium ion battery field. A general chemical formula of the cathode material is Li(Ni0.4Co0.2Mn0.4)1-xMxO2-yNy, M is Ti, Mg, Al or Cu; N is F, Cl or Br; x is greater than 0 and less than or equal to 0.15; and y is greater than 0 and less than or equal to 0.15. The preparation method comprises the following steps: weighing soluble lithium source, nickel source, manganese source, cobalt source and metal M salt and N salt according to mol ratio, respectively using deionized water for dissolving, adding a citric acid solution for uniformly mixing and stirring, using concentrated ammonia liquor to adjust pH value, and heating and evaporating to obtain gel, heating and drying the gel, performing twice calcination and grinding to obtain the anion / cation-doped and modified lithium ion battery (4:4:2)type ternary cathode material. The cathode material has the advantages of uniform particles, smooth surface, good crystallization performance, high specific capacity and cycle performance. The material is suitable for large scale production, and can be used for lithium ion batteries cathode material.
Owner:JIANGNAN UNIV

Cation-doped and modified lithium ion battery (4:4:2)type ternary cathode material and preparation method thereof

The invention relates to a cation-doped and modified lithium ion battery (4:4:2)type ternary cathode material and a preparation method thereof, which belong to the lithium ion battery field. A general chemical formula of the cathode material is LiNi0.4-xM1xCo0.2-yM2yMn0.4-zM3zO2, M1 is Mg, Zn or Cu; M2 is Al or Cr; M3 is Ti, Zr or Mo, x is greater than or equal to 0 and less than or equal to 0.15; y is greater than or equal to 0 and less than or equal to 0.15; and z is greater than or equal to 0 and less than or equal to 0.15. The preparation method comprises the following steps: weighing soluble lithium source, nickel source, manganese source, cobalt source and metal M1 salt, M2 salt and M3 salt according to mol ratio, respectively using deionized water for dissolving, adding a citric acid solution for uniformly mixing and stirring, using concentrated ammonia liquor to adjust pH value, and heating and evaporating to obtain gel, heating and drying the gel, performing twice calcination and grinding to obtain the cation-doped and modified lithium ion battery (4:4:2)type ternary cathode material. The cation-doped and modified lithium ion battery (4:4:2)type ternary cathode material has fine and uniform particles which can reach a nano level, and has high discharge capacity, excellent cycle stability and multiplying power performance, the performance can be kept under high low temperature condition, so that the ternary cathode material is convenient for large scale industrial production and has high practical degree.
Owner:JIANGNAN UNIV

Device and method for continuously preparing gas diffusion layer of fuel cell

The invention belongs to the technical field of fuel cells, and discloses a device and a method for continuously preparing a gas diffusion layer of a fuel cell. The device comprises: a feeding end conveying belt which is driven by a first motor to continuously convey raw material carbon paper from a raw material carbon paper support; a screen printing machine which is used for coating to obtain microporous layer carbon paper; a discharging end conveying belt which is driven by a second motor to operate and continuously convey the microporous layer carbon paper to sequentially pass through thevacuum drying oven and the high-temperature atmosphere drying oven to obtain a gas diffusion layer to roll the gas diffusion layer; a feeding end conveying belt which is connected with a first vacuumpump, wherein the discharging end conveying belt is connected with a second vacuum pump; and a synchronous controller which controls the first motor and the second motor to start and stop synchronously. The feeding end conveying belt and the discharging end conveying belt are connected with the first vacuum pump and the second vacuum pump correspondingly to provide vacuum adsorption, and stable and continuous conveying of raw material carbon paper is guaranteed; the synchronous start and stop of the first motor and the second motor are beneficial to accelerating the production takt and realizing the continuous coating of the raw material carbon paper.
Owner:FAW JIEFANG AUTOMOTIVE CO

Anion doped modified lithium ion battery (4:4:2) type ternary cathode material and preparing method thereof

The invention relates to an anion doped modified lithium ion battery (4:4:2) type ternary cathode material and a preparing method thereof, and belongs to the field of lithium ion batteries. The general chemical formula of the cathode material is LiNi<0.4>Co<0.2>Mn<0.4>O<2-z>Xz, wherein the X is F, Cl or Br; and the Z is more than 0 and not more than 0.15. The method includes steps of: weighing a soluble lithium salt, a nickel salt, a manganese slat, a cobalt salt and an X salt according to a molar ratio, dissolving the weighed compounds separately with deionized water, adding a citric acid solution and mixing and stirring uniformly, adjusting the pH value by utilization of concentrated ammonia liquor, heating and evaporating to obtain gel, heating and drying the gel, and performing two times of firing and grinding to obtain the anion doped modified lithium ion battery (4:4:2) type ternary cathode material. Particles of the lithium ion battery cathode material are fine and uniform and reach the nanometer level, so that the cathode material has characteristics of high discharge capacity, excellent cyclic stability and rate capacity, capability of maintaining the properties at high or low temperature conditions, convenience for large-scale industrial production, and high practical degree.
Owner:JIANGNAN UNIV

High-temperature fuel cell graphite bipolar plate stamping molding mold and method

The invention provides a high-temperature fuel cell graphite bipolar plate stamping molding mold. The high-temperature fuel cell graphite bipolar plate stamping molding mold is composed of upper and lower two models and a demolding middle cavity with a demolding angle, wherein the upper and lower two models are provided with convex portions correspondingly, a bipolar plate pressed out of a flow channel is separated to obtain a molded bipolar plate, the upper and lower two models are each fixedly connected with one heating cooling plate, and the upper and lower two heating cooling plates of thegraphite bipolar plate stamping molding mold are each fixedly connected with one thermal electric resistance plate to be used for monitoring the temperature of the whole mold. The high-temperature fuel cell graphite bipolar plate stamping molding mold provided by the invention is reasonable in structure and high in stamping efficiency, a series of working procedures of material filling, heating,stamping, cooling, demolding, part fetching and the like can be performed rapidly, the demolding is simple and convenient and high in success rate, the production cost is low, the graphite bipolar plate prepared by the stamping is smooth in surface, uniform in thickness and good in flow channel size consistency, the gas flow channel can be molded at one time without need of mechanical machining, the precision is high, the surface corrosion and hydrogen penetration phenomena can be effectively solved after later-period heat treatment, and the commercialization process of high-temperature fuel cells can be effectively accelerated.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI

Perovskite solar cell based on down-conversion layer and preparation method of perovskite solar cell

The invention discloses a perovskite solar cell based on a down-conversion layer. The perovskite solar cell mainly solves the problems that an existing perovskite solar cell is low in photoelectric conversion efficiency and poor in stability. The perovskite solar cell sequentially comprises a transparent conductive substrate (1), an electron transport layer (3), a perovskite absorption layer (4),a hole transport layer (5) and a metal electrode (6) from top to bottom; the perovskite solar cell is characterized in that the down-conversion layer (2) is arranged between the transparent conductivesubstrate (1) and the electron transport layer (3), the down-conversion layer adopts a rare earth element doped material, and the rare earth element doped material comprises dysprosium-doped gadolinium vanadate and lanthanum vanadate. The solar spectrum absorption of the perovskite solar cell is improved, the introduction of interface defects and performance degradation of perovskite and an electron transport layer caused by ultraviolet light are avoided through structural adjustment, the photoelectric conversion efficiency and stability of the perovskite solar cell are improved, and the perovskite solar cell can be used for providing electric energy for outdoor working equipment.
Owner:XIDIAN UNIV

Method for manufacturing broad-spectrum strong-focusing Fresnel lens

The invention provides a method for manufacturing a broad-spectrum strong-focusing Fresnel lens, belonging to the optics field. The method is used to solve the problems that a Fresnel lens imaging through a traditional concentration system has a poor effect of converging sunlight and is difficult to obtain higher conversion efficiency. A realization process of the method comprises the following steps: firstly, obtaining a iteration relation between dip angle ThetaBL of a ring zonal gear of a Fresnel lens and ring height HGR of the Fresnel lens by computation after a divergence angle Thetas of incident sunlight is introduced; adopting a prediction-correction algorithm to obtain an dip angle ThetaBL and ring height HGR of each ring, and using a Monte Carlo radiosity algorithm to obtain a power density Psi of the sunlight received by a fixed area in a focal plane; obtaining a power density limit value Psilim based on an imaging concentration principle; and calculating a spectrum range of a to-be-manufactured Fresnel lens : absolute value of (Psilim-Psi) is less than or equal to Epsilon, and manufacturing a die according to final parameters of the Fresnel lens obtained by simulation so as to obtain a lens entity. The methodprovided byf the invention is used for manufacturing the broad-spectrum strong-focusing Fresnel lens.
Owner:HARBIN INST OF TECH

Silicon-based triphenylamine derivative, preparation method thereof and application thereof in perovskite solar cell

The invention discloses a silicon-based triphenylamine derivative, a preparation method thereof and application thereof in a perovskite solar cell. In a chemical structural formula of the silicon-based triphenylamine, substituent groups are hydrogen, methyl, methoxyl, a methylthio group and a methylseleno group, and the substituent groups can be at any substitution site of a benzene ring. The silicon-based triphenylamine derivative material is not only simple in synthesis steps and has relatively high synthetic yield, and raw material cost is extremely low, a device preparation technology is simplified after the silicon-based triphenylamine derivative material is applied to a hole transport layer of a p-i-n type planar perovskite solar cell, and conversion efficiency of the solar cell alsocan be obviously improved, so that a good application prospect is shown; besides, it is worth mentioning that the silicon-based triphenylamine derivative disclosed by the invention has good crystallinity when m is equal to 0 and is not in an amorphous form, which is infrequent in other hole transport materials, and good crystallinity after annealing is beneficial to further improvement of hole transmission rate of the silicon-based triphenylamine derivative and increase of current of the solar cell and a fill factor.
Owner:SUZHOU UNIV +1

Safety people-vehicle-road three-in-one method for unmanned vehicle

Unmanned vehicles are the most important application at present, but numerous problems still exist in the commercialization process, and the idea that traditional manned vehicles are changed into theunmanned vehicles simply relying on the artificial intelligence mode is defective. According to a safety people-vehicle-road three-in-one method for an unmanned vehicle, the usual design idea of the traditional vehicles is abandoned, and the unmanned vehicle is redesigned, specifically, front and rear windshields are removed, a seat cabin is completely independent for safety strengthening, vacuumsuction cups are ejected for shortening the braking distance, an intelligent buffer ring is arranged on the periphery of the vehicle, and a safety air bag is arranged outside the original front windshield to form a lotus-type protective cushion to protect collided people and objects; meanwhile, people and roads are comprehensively considered together as a whole; and the surface of a lane is coatedwith magnetic strips and passive radio frequency card chips with information to assist in accurate positioning, and an automatic people walking door is arranged when necessary. The safety of the unmanned vehicle can be greatly enhanced, the commercialization process of the unmanned vehicle is greatly improved, and numerous benefits are brought to the traditional vehicles.
Owner:宋云波
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