纪念徽章

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N-DOPED AND DEFECT-CONTAINING POROUS CARBON CHANNEL MATERIAL SUPPORTED WITH COBALT CLUSTERS FOR ZINC-AIR BATTERY AND PREPARATION METHOD THEREFOR

The present invention relates to an N-doped and defect-containing porous carbon channel material supported with cobalt clusters for a zinc-air battery, wherein the material comprises an N-doped and defect-containing porous carbon as a carrier and cobalt (II) clusters supported in the channels of the N-doped and defect-containing porous carbon. The N-doped and defect-containing porous carbon channel material supported with cobalt clusters is used as a bifunctional catalyst for an oxygen reduction reaction and an oxygen evolution reaction. Also disclosed is a method for preparing the above material. The N-doped and defect-containing porous carbon channel material supported with cobalt clusters disclosed according to the present invention has excellent oxygen reduction and oxygen evolution reaction activities in a zinc-air battery, and this greatly improves the stability and excellent specific capacity of the zinc-air battery. The present invention has simple and controllable steps and it ...

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Device and method for continuously preparing silicon monoxide negative electrode material

The invention belongs to the technical field of lithium ion battery negative electrode material preparation, and discloses a device and a method for continuously preparing a silicon monoxide negative electrode material. The device is divided into a left collecting area, a left transition area, a heating area, a right transition area and a right collecting area. According to the device, continuous feeding of raw materials, continuous reaction and continuous discharging of silicon monoxide products under the vacuum airtight condition are achieved. Meanwhile, the steps of raw material addition, reaction and product collection are completely separated and do not influence each other. Therefore, the reported production method of the silicon monoxide negative electrode material has the advantages of high yield, strong stability and convenience in feeding and discharging, the production efficiency of the silicon monoxide is improved, and the industrial requirements can be better met.

Method and system for interaction between teaching mechanical arm and pack basket and storage medium

The invention provides a method and system for interaction between a teaching mechanical arm and a pack basket and a storage medium. The method comprises the steps that material cache regions on the pack basket are distributed in a rectangular array mode, and the sizes of the material cache regions, the center spacing distance between the material cache regions and the positions of the material cache regions in the array are recorded; calculating a conversion variable between the coordinate system A at the tail end of the mechanical arm and the coordinate system B of the material cache region array; demonstrating an initial grabbing point on a coordinate system A when a mechanical arm interacts with a material cache region at the initial position of the array; performing conversion calculation by taking the initial grabbing point as a starting point according to the conversion variables, the sizes of the material cache regions, the central spacing distances among the material cache regions ...

Unidirectional polyethylene shrink film with stable shrinkage rate and preparation method thereof

The invention discloses a unidirectional polyethylene shrink film with stable shrinkage rate and a preparation method thereof, and relates to the field of packaging materials. Wherein the unidirectional polyethylene shrink film is obtained by processing 28 to 32 weight percent of high-pressure low-density polyethylene, 8 to 12 weight percent of low-pressure polyethylene, 35 to 45 weight percent of linear low-density polyethylene and 15 to 25 weight percent of metallocene linear low-density polyethylene. The unidirectional polyethylene shrink film has the advantages of stable shrinkage rate, high transparency, good mechanical properties, high heat sealing strength and the like.

Storage location state detection method and system based on generative adversarial network, and storage medium

The invention provides a storage location state detection method and system based on a generative adversarial network, and a storage medium, and the method comprises the steps: collecting a plurality of pictures in a storage location vacancy and occupation state, and respectively defining the pictures as positive and negative samples; the positive sample is used as input to train a GANopen adversarial network until the similarity of the positive sample and a reconstructed image of the positive sample reaches an expected target, the current real image of the storage location is input into the trained GANopen adversarial network, and after the reconstructed image is obtained, post-processing is carried out to obtain a comparison value; defining a storage location state judgment value according to a difference boundary between corresponding reconstructed images generated by the positive and negative samples in the trained GANopen adversarial network; and comparing the comparison value with ...

RECHARGEABLE ZINC-AIR FLOW CELL DEVICE

A rechargeable zinc-air flow cell device, comprising: a water storage tank (1), an electrolytic solution storage tank (2), a battery pack (3) and a liquid storage tank (4); the water storage tank (1) communicates with the electrolytic solution storage tank (2) through a tube (5), the electrolytic solution storage tank (2) communicates with the battery pack (3) through the tube (5), and the battery pack (3) communicates with the liquid storage tank (4) through the tube (5); the battery pack (3) comprises at least two battery cells (31), the battery cells (31) comprising a zinc anode layer (311), an electrolytic solution layer (312) and an air cathode layer (313), the electrolytic solution layer (312) being located between the zinc anode layer (311) and the air cathode layer (313); the battery cells (31) are connected in series, and the electrolytic solution layers (312) in the battery cells (31) communicate with each other; and said device further comprises an anti-corrosion pump (6) for ...

ZINC-AIR FLOW BATTERY AIR ELECTRODE AND BATTERY SYSTEM COMPRISING SAME

A zinc-air flow battery air electrode and a battery system comprising same. The air electrode is of a four-layer structure, free inflow and outflow of ions and air can be ensured, normal implementation of battery reaction is ensured, electrolyte leakage can be prevented, and the service life of a battery is prolonged. According to the battery system based on the air electrode, a battery pack system, an air system, and a flow system are combined, and a zinc-air flow battery system is prepared.

Medical hyperspectral reconstruction method based on snapshot type coding imaging system

The invention discloses a medicine hyperspectral reconstruction method based on a snapshot type coding imaging system, and the method comprises the steps: collecting and processing a medicine hyperspectral original image, obtaining an enhanced medicine hyperspectral image, carrying out the simulation space coding, obtaining a coded measurement image, carrying out the spectrum reverse displacement of the coded measurement image, carrying out the reverse coding processing, and obtaining a medical hyperspectral image. The enhanced medical hyperspectral image is used as a target image, and a training set and a test set are constructed according to the measurement image and the target image after reverse coding; building a deep symmetric neural reconstruction network, and carrying out training and testing through a training set and a testing set; the tested deep symmetric neural reconstruction network is deployed to a snapshot type coding imaging system, medical measurement images are acquired ...

Unmanned aerial vehicle wind power detection dynamic path optimal planning method and system

The invention relates to an unmanned aerial vehicle wind power detection dynamic path optimal planning method and system. The method comprises the following steps: determining a visual area and a visual point of an unmanned aerial vehicle on the surface of a wind turbine generator; finding out a path which is barrier-free, shortest and lowest in loss between visible points, and converting a path planning problem (IPP) into a traveling salesman problem (TSP); an improved discrete particle swarm optimization (DPSO) algorithm is adopted to solve the TSP problem, and an optimal path is planned; according to the method, the shutdown maintenance time of the wind turbine generator can be shortened as much as possible, economic losses caused by wind curtailment are reduced, meanwhile, dependence on the technology of operators is reduced, and high practicability is achieved.

Low peak-to-average power ratio processing method for RadCom anti-interference signal

The invention provides a low peak-to-average power ratio processing method for a RadCom anti-interference signal. According to the method, firstly, available subcarrier information is obtained through frequency domain sensing and frequency domain judgment, then binary bit streams are mapped into data symbols through QAM modulation, then the data symbols are placed on available subcarriers, zero setting is conducted on unavailable subcarriers, RadCom frequency domain transmitting signals are obtained, then the obtained signals are sequentially subjected to serial-to-parallel conversion and IFFT to obtain time domain signals, and the time domain signals are transmitted to the base station. And amplitude limitation and band-pass filtering processing are carried out on the time domain signal, and a time domain NC-OFDM signal is obtained through parallel-serial conversion and cyclic prefix addition. According to the method, based on a direct amplitude limiting method and a band-pass filtering ...

Disinfection treatment device for pigeon breeding

A pigeon breeding disinfection treatment device can clean and disinfect excrement in time without manual operation disinfection, so that a good growth environment is provided for pigeons while manpower is saved, and the pigeon breeding disinfection treatment device comprises a fixing frame, a pigeon cage and a disinfection cleaning device, a feeding groove is formed in one side of the pigeon cage, and a protection plate is arranged below the pigeon cage; the disinfecting and cleaning device comprises a liquid storage bottle and a collecting box which are respectively arranged on two sides of the pigeon house together with the liquid storage bottle; the first motor is arranged at one end of the feeding trough; the rolling shaft is arranged between the protection plate and the pigeon house and connected with the motor, one end of the rolling shaft is provided with a driving wheel, and the other end is provided with a gear; the rack is arranged on the side, away from the driving wheel, of ...

HOLLOW CARBON SPHERE WITH MULTI-STAGE PORE STRUCTURE AND PREPARATION METHOD THEREFOR

The present invention relates to a hollow carbon sphere with a multi-stage pore structure. The hollow carbon sphere is of a multi-stage pore structure, and has micropores, mesopores and macropores, wherein the pore diameter of the micropores is not greater than 2 nm, the pore diameter of the mesopores is distributed between 2-50 nm, and the pore diameter of the macropores is greater than 50 nm; the pore volume contributed by the micropores is 0.047-0.303/g; the pore volume contributed by the mesoporous is 0.15-0.49 cm3/g; the pore volume contributed by the macropores is 0.07-0.80 cm3/g; and the grain size of the hollow carbon sphere is 2.5-6.5 μm, the wall thickness thereof is 5-8 nm, and the specific surface area thereof is 443.23 m2/g. Further provided is a method for preparing the material. The carbon sphere provided by the invention has the characteristics of thin walls, a high porousness, a high specific surface area, etc., and these can enhance the application performance thereof.

ADDITIVE FOR LOW TEMPERATURE LITHIUM ION BATTERY, AND ELECTROLYTE AND LITHIUM ION BATTERY USING SAME

The present invention relates to an additive for a functionalized metal-organic framework material of a low temperature lithium ion battery, a low temperature electrolyte, and a low temperature lithium ion battery. The electrolyte comprises an organic solvent, a composite lithium salt and an additive, wherein in percentages by mass, the content of the organic solvent is 80-89%, the content of the composite lithium salt is 10-15%, the content of the additive is 0.1-10%, and the additive is an MOF-functionalized additive. The use of the electrolyte in a lithium ion battery can significantly improve the stability thereof, and increases the conductivity, the degree of dissociation and the solubility of the electrolyte at a low temperature, enhances the conduction rate of Li+, and improves the structure of a negative electrode solid phase interface film of the lithium ion battery, and then reduces the low temperature impedance thereof, and improves the high rate capability of the battery. The ...

Preparation method and application of positive electrode material

The invention discloses a preparation method and application of a positive electrode material, and the preparation method comprises the following steps: (1) carrying out electrostatic spinning, drying and heat treatment on a mixture containing polyacrylonitrile, UIO-66 and N, N-dimethylformamide to obtain a spinning sample substrate; and (2) mixing the spinning sample substrate, sulfur and a binder, and carrying out hot press molding to obtain the positive electrode material. Through a solvent-free dry power generation electrode preparation technology, the slurry is prepared without using an organic solvent, and the problems of pollution of the organic solvent, side reaction with other components of the battery, sublimation of sulfur in the drying process and drying cost are avoided.

Power distribution automation strategy rehearsal system

The invention provides a strategy rehearsal system for power distribution automation, and the system comprises a data obtaining module which is used for obtaining a power distribution network operation section in a current state; the index calculation module is used for calculating a power distribution network index value in a current state according to the power distribution network operation section; the judgment module is used for evaluating the power distribution network index value and generating an evaluation result; the strategy output module is used for generating an undetermined power distribution automation strategy according to the evaluation result; the rehearsal module performs rehearsal simulation according to the generated power distribution automation strategy and generates an operation section in the state, and the operation section is used for calculating a power distribution network index value in the rehearsal simulation state; and repeating the above process until the ...

RECHARGEABLE ZINC-AIR FLOW SINGLE BATTERY

A rechargeable zinc-air flow single battery. A dual-electrode zinc-air flow battery is designed by adopting a dual-function catalyst; a single battery consists of a battery housing, an air inlet cavity (1), an air cathode (2), a metal anode (4), an electrolyte layer (3), and a conductive current collecting sheet (2-1); the battery only uses one kind of electrolyte, and the charging and discharging reaction of the battery is immediately completed in one electrolyte cavity. By improving a liquid flow system and a metal electrode, the formation of a zinc crystal branch is prevented, and by improving an air cathode, the air cathode can normally participate in the reaction without liquid leakage, so that the safety and commercialization of the battery are greatly improved.

Distribution automation strategy rehearsal system and rehearsal method thereof

The invention discloses a power distribution automation strategy rehearsal system and a rehearsal method thereof, the system comprises a topological graph generation module, a visual rehearsal module, a user information storage module and a derivation module, and the visual rehearsal module is electrically connected with the topological graph generation module, the user information storage module and the derivation module; the topological graph generation module is used for converting the single line diagram into a distribution line topological graph; the visual rehearsal module sets fault points and fault types in the distribution line, and rehearses affected users after each fault point has a fault; the user information storage module is used for storing information such as user positions and house numbers; and the derivation module is used for deriving the number of users affected by faults, so that power distribution management personnel can timely and comprehensively master the number ...

Method and device for diagnosing zero-line-off and phase-loss faults of low-voltage power distribution network

The invention provides a method and a device for diagnosing zero-line disconnection and phase loss faults of a low-voltage power distribution network. The method comprises the following steps of: S1, respectively acquiring current data at the head end and the tail end of a line; s2, according to the current data of the head end and the tail end, whether an open-phase fault and a zero line breaking fault exist between the head end and the tail end or not is judged; s3, if the open-phase fault or the zero-line fault exists, setting a middle end between the head end and the tail end, collecting current data at the middle end, judging whether the open-phase fault and the zero-line fault exist between the head end and the middle end or not, and judging whether the open-phase fault and the zero-line fault exist between the middle end and the tail end or not; and S4, if the open-phase fault or the broken-zero fault exists, setting a new middle end until the fault position is positioned to a determined ...

一种磷酸钒铁锂碳纳米管改性三元正极材料的制备方法

... 本发明属于正极材料制备技术领域，涉及一种磷酸钒铁锂碳纳米管改性三元正极材料的制备方法，包括磷酸钒铁锂碳纳米管改性剂的制备和磷酸钒铁锂碳纳米管改性三元正极材料的制备，步骤一：制备磷酸钒铁锂碳纳米管复合物；步骤二：将聚乙烯吡咯烷酮、膨润土、聚偏氟乙烯和导电填料纳米颗粒在二甲基甲酰胺中均匀搅拌混合得到预混液；步骤三：在预混液内加入磷酸钒铁锂碳纳米管复合物、离子液体进行机械搅拌得到第一混合浆料，将氧化石墨加入至第一混合浆料中搅拌热插层，磷酸钒铁锂碳纳米管复合物、离子液体进入至石墨层间间隙得到第二混合浆料。此方法制备的三元正极材料可提高正极材料的容量，改善电池的高低温情况的充放电性能。 ...

Spectral amplitude modulation rolling bearing fault diagnosis method based on short-time Fourier transform

The invention discloses a novel spectrum amplitude modulation rolling bearing fault diagnosis method based on short-time Fourier transform, and the method comprises the steps: obtaining an amplitude and a phase in a time-frequency domain of a collected complex bearing signal through the short-time Fourier transform, keeping the phase unchanged, and carrying out the short-time Fourier transform. The method comprises the following steps: using different exponential weights to change the amplitude, forming an editing spectrum by a result and an original phase, then carrying out short-time inverse Fourier transform to obtain a correction signal, and finally carrying out Hilbert transform and Fourier transform on the correction signal to obtain a square envelope spectrum, thereby reducing the influence of noise and highlighting the fault characteristic frequency. By analyzing the square envelope spectrum, the fault characteristic frequency can be extracted, and finally the fault diagnosis of ...

Method and system for managing parking space based on visual identification

The invention provides a storage location management method and system based on visual identification, and the method comprises the steps: S100, recognizing warehousing goods in a monitoring region of a main camera through employing a trained neural network, so as to obtain a main target detection frame of the goods; step S200, recording pixel coordinates of each angular point of the main target detection frame; calculating the distance between each corner point and the original point O of the image coordinates, setting the corner point with the shortest distance as an upper left corner point C1, and setting the corner point with the longest distance as a lower right corner point C3; the rest corner points are compared with C3 and C1 for judgment, if the rest corner points are equal to the y-axis coordinate of C1, the rest corner points are the upper right corner point C2, and if the rest corner points are equal to the x-axis coordinate of C1, the rest corner points are the lower left corner ...

3D target 6DoF accurate positioning method and system

The invention provides a 3D target 6DoF accurate positioning method and system, and the method comprises the steps: calculating scanning scene point cloud data P and an initial pose of a target model in a scanning scene based on an image M, a depth map D and a camera internal reference K; counting the quadratic sum of the vertical distance from the target edge feature point in the image M to the projection line of the sharp edge ME in the corresponding target model, and making a line feature matching error; calculating a distance from a target feature point in the point cloud data P to a corresponding target model plane as a surface feature matching error Ef; calculating the color difference between the texture of the target model and the image M at the same pixel point as a texture feature matching error Et; and performing nonlinear iterative optimization on Ee, Ef and Et, setting an optimization variable as a 6DoF pose of the target model under a camera coordinate system, and solving ...

Carbon-coated silicon monoxide negative electrode material and preparation method and application thereof

The invention belongs to the technical field of lithium ion battery negative electrode materials, and particularly discloses a preparation method of a carbon-coated silicon monoxide negative electrode material, which comprises the following steps of: crushing a commercially available silicon monoxide raw material, and coating a carbon layer on the surface of the silicon monoxide raw material by using a vapor deposition method to obtain the carbon-coated silicon monoxide negative electrode material. And finally, carrying out secondary ball-milling treatment, screening and demagnetizing operation on the composite material, and using the composite material as the lithium ion battery negative electrode material. According to the technical scheme, large-scale preparation of the high-performance carbon-coated silicon monoxide negative electrode material is achieved, meanwhile, unstable components on the surface of a conventional carbon-coated silicon monoxide material are removed through secondary ...

High-flatness ultra-thin low-pressure film

The invention relates to the technical field of films, and particularly discloses a high-flatness ultra-thin low-pressure film. The high-flatness ultra-thin low-pressure film is prepared from the following raw materials in parts by weight: 60 to 100 parts of high-density polyethylene, 8 to 12 parts of linear low-density polyethylene, 5 to 15 parts of inorganic salt, 7 to 9 parts of modified montmorillonite, 1 to 2 parts of plasticizer and 0.1 to 0.5 part of tackifier, the modified montmorillonite is prepared from the following raw materials in parts by weight: 16-20 parts of montmorillonite, 1-3 parts of cinnamic acid, 2-4 parts of succinic acid, 8-12 parts of a modifier, 1-2 parts of pentaerythritol ester and 20-40 parts of water. The inorganic salt is obtained by mixing nano calcium carbonate and nano barium sulfate in a mass ratio of (2-6): 5; the formula is simple, the proportion is rigorous, and the obtained low-pressure film is high in flatness and excellent in mechanical property ...

Preparation method of lithium iron vanadium phosphate carbon nanotube modified ternary positive electrode material

The invention belongs to the technical field of preparation of positive electrode materials, and relates to a preparation method of a lithium iron vanadium phosphate carbon nanotube modified ternary positive electrode material, which comprises preparation of a lithium iron vanadium phosphate carbon nanotube modifier and preparation of the lithium iron vanadium phosphate carbon nanotube modified ternary positive electrode material, and comprises the following steps: 1, preparing a lithium iron vanadium phosphate carbon nanotube compound; step 2, uniformly stirring and mixing polyvinylpyrrolidone, bentonite, polyvinylidene fluoride and conductive filler nanoparticles in dimethylformamide to obtain a premixed solution; and step 3, adding the lithium iron vanadium phosphate carbon nanotube compound and an ionic liquid into the premixed solution, performing mechanical stirring to obtain a first mixed slurry, adding graphite oxide into the first mixed slurry, performing stirring and hot intercalation ...

Low noble metal heterojunction fuel cell catalyst and preparation method and application thereof

The invention discloses a preparation method of a low noble metal heterojunction fuel cell catalyst. The preparation method comprises the following steps: (1) preparing Pt-Co alloy nanoparticles; and (2) preparing a cobaltous acetate ethanol solution, placing the Pt-Co alloy nanoparticles in the cobaltous acetate ethanol solution, stirring, and growing a cobaltous acetate film layer on the outer edge of the surface of the Pt-Co alloy nanoparticles to obtain the low noble metal heterojunction fuel cell catalyst. The preparation method provided by the invention can effectively reduce the use of Pt and reduce the preparation cost of the catalyst, and is suitable for large-scale application of the catalyst. The prepared low noble metal heterojunction fuel cell catalyst has relatively high oxygen reduction activity, and the catalytic reaction efficiency can be effectively improved.

High-strength prestressed steel strand twisting mechanism and twisting method thereof

The invention discloses a high-strength prestressed steel strand twisting mechanism and a twisting method thereof.The high-strength prestressed steel strand twisting mechanism comprises a machine base, a twisting disc assembly, a pay-off assembly, a forming assembly, a wire conveying assembly and a tensioning assembly, and the pay-off assembly, the twisting disc assembly, the forming assembly, the wire conveying assembly and the tensioning assembly are sequentially arranged on the machine base; according to the prestressed steel strand twisting machine, different prestressed steel strands are twisted according to different requirements, a center line and an outer-layer line can be positioned and tensioned through the tensioning assembly in the twisting process, the position of a pressing block is adjusted through the adjusting mechanism, and the tensioning assembly can be used for tensioning the center line and the outer-layer line in the twisting process. The two wire feeding wheels are ...

Preparation method of carbon-coated transition metal telluride and application of carbon-coated transition metal telluride in aqueous zinc ion battery

The invention discloses a preparation method of a carbon-coated transition metal telluride and application of the carbon-coated transition metal telluride in an aqueous zinc ion battery. The preparation method comprises the following steps: grinding and mixing commercial transition metal telluride and a conductive carbon source, and transferring the mixed material into a ball milling tank filled with ball milling beads; a planetary ball mill is used for ball milling and mixing to obtain the carbon-coated transition metal telluride, and the carbon-coated transition metal telluride is used as an aqueous zinc ion battery positive electrode material for improving the rate capability and the cycle stability of an aqueous zinc ion battery. Wherein the transition metal telluride is one or more of manganese telluride, nickel telluride, cadmium telluride or bismuth telluride, and the conductive carbon source is a carbon nanotube. The MnTe-coated CNTs composite material prepared by the invention ...

Liquid bag film and preparation method thereof

The invention discloses a liquid bag film and a preparation method thereof, and relates to the technical field of packaging films. The liquid bag film comprises an inner layer film, a middle layer film and an outer layer film; the outer layer thin film, the middle layer thin film and the inner layer thin film are tightly attached in sequence from outside to inside; the three layers of films are prepared from the following raw materials: 8 to 12 parts of low-density high-pressure polyethylene, 87 to 91 parts of metallocene polyethylene, 0.4 to 0.6 part of compatilizer, 0.4 to 0.6 part of slipping agent and 12 to 20 parts of aluminum oxide composite fiber; the preparation method comprises the following steps: respectively adding the low-density high-pressure polyethylene, the metallocene polyethylene, the compatilizer, the slipping agent, the aluminum oxide composite fiber, the antibacterial agent, the antistatic agent and the ethyl titanate into a stirrer, uniformly stirring, heating to ...

Backscatter communication method and system

The invention belongs to the technical field of wireless communication, and provides a backscatter communication method and system. The method comprises the following steps: combining baseband data to be sent into a data frame; acquiring clock frequency information according to an FSCM signal in a data frame, converting the clock frequency information into a continuous frequency conversion signal from a DAC, controlling a VCO to generate a clock signal with a corresponding frequency, returning the clock signal to an FPGA, and driving an ROM array to output control information in sequence; the radio frequency switch outputs a reflection signal according to the control information; receiving a reflected signal, and detecting a data frame; oversampling is carried out, and low-pass filtering is carried out; carrying out downsampling; performing dechirp on the FSCM signal in the data frame, then performing fast Fourier transform, and performing judgment according to a peak value on a Fourier ...

Production equipment for high-strength prestressed steel strand

The invention discloses production equipment for a high-strength prestressed steel strand, and belongs to the technical field of steel strand production, the production equipment comprises a bottom plate, a wire releasing assembly, a guiding assembly, a compacting assembly, a winding assembly and a tensioning assembly, the wire releasing assembly, the guiding assembly, the compacting assembly, the winding assembly and the tensioning assembly are sequentially arranged on the bottom plate, the filament releasing assembly comprises a monofilament placing mechanism, a monofilament rotating mechanism and a monofilament driving mechanism, the monofilament placing mechanism comprises a central monofilament placing part and an edge monofilament placing part, and the filament releasing assembly, the guiding assembly and the tensioning assembly are matched with one another to ensure that monofilaments can be uniformly and stably released and twisted; the stranded steel strand is compacted by the ...

Composite solid electrolyte and preparation method and application thereof

The invention discloses a composite solid electrolyte and a preparation method and application thereof. The composite solid electrolyte comprises PAN nanofibers, lithiated zeolite and a polymer electrolyte, the PAN nanofiber is of a 3D porous skeleton structure; the lithiated zeolite is distributed on the PAN nanofiber, and the polymer electrolyte is in-situ polymerized in the 3D porous skeleton structure. The specific preparation method comprises the following steps: carrying out electrostatic spinning on a polyacrylonitrile solution containing lithiated zeolite, and drying to obtain a nanofiber membrane; and injecting an electrolyte precursor solution containing a polymer, an initiator and a lithium salt into the nanofiber membrane prepared in the step S1, and carrying out a polymerization reaction to obtain the composite solid electrolyte. The active filler is added into the 3D network structure and the in-situ polymer electrolyte, so that the ionic conductivity is improved, the interface ...

Aqueous zinc ion battery electrolyte additive, electrolyte and application thereof

The invention belongs to the technical field of aqueous zinc ion batteries, and particularly discloses an aqueous zinc ion battery electrolyte additive, an electrolyte and application thereof. The invention provides application of a compound as shown in a structure (I) as an electrolyte additive in an aqueous zinc ion battery. In the structural formula, ions represented by R < + > are one or more of H < + >, Na < + > and K < + >. As an electrolyte additive in the aqueous zinc ion battery, the compound can improve the interface environment between an electrolyte and a zinc negative electrode, promote the uniform distribution of an electric field and a zinc ion concentration field, reduce the nucleation potential and enable the zinc deposition process to be more uniform. The method can effectively solve the problems of zinc dendrite growth, zinc negative electrode corrosion and surface passivation, can effectively reduce the consumption of electrolyte and improve the utilization rate of zinc ...

Non-noble metal fuel cell catalyst as well as preparation method and application thereof

The invention discloses a preparation method of a non-noble metal fuel cell catalyst, which comprises the following steps: respectively weighing silicon powder, graphite powder and cobaltosic oxide powder, and mixing to obtain a first mixture; uniformly mixing the first mixture with a solvent, adding polyvinylidene fluoride, uniformly grinding, and drying to obtain a second mixture; and molding the second mixture, placing the molded second mixture in calcining equipment, calcining the second mixture in a mixed atmosphere of argon, hydrogen and methane, and cooling the second mixture to obtain a finished product. The preparation method provided by the invention can effectively reduce the use of Pt and reduce the preparation cost of the catalyst, and is suitable for large-scale application of the catalyst. The prepared non-noble metal fuel cell catalyst has high oxygen reduction activity, and the catalytic reaction efficiency can be effectively improved.

Preparation method of beta-type mesoporous cobalt hydroxide and application of beta-type mesoporous cobalt hydroxide in electroreduction of carbon dioxide

The invention belongs to the technical field of electrochemical catalysis, and particularly discloses a preparation method of beta-type mesoporous cobalt hydroxide and application of the beta-type mesoporous cobalt hydroxide in electroreduction of carbon dioxide, and the beta-type mesoporous cobalt hydroxide is prepared by the following steps: fully dissolving F127, adding cobalt nitrate, mixing, heating in inert gas, keeping constant temperature, adding ammonia water, reacting, cooling, filtering, washing, and drying to obtain the beta-type mesoporous cobalt hydroxide. And centrifugally washing the precipitate, and drying. The beta-type mesoporous cobaltous hydroxide has excellent selectivity for catalyzing ethanol, the mesoporous structure enables the beta-type mesoporous cobaltous hydroxide to expose abundant active sites compared with the beta-type cobaltous hydroxide, the adsorbability for carbon dioxide is improved, proton transmission is promoted, and therefore the excellent activity ...

Robot TCP calibration method and system based on naive geometric elements, and storage medium

The invention provides a robot TCP calibration method and system based on naive geometric elements and a storage medium, and the method comprises the steps: S100, carrying out the naive geometric element decomposition of a tail end flange plate and a tool end of a robot, extracting a geometric surface, and marking the surface; s200, a motion capture system is adopted to capture mark coordinates on the geometric surface so as to establish a flange plate dynamic compensation coordinate system and a tool dynamic compensation coordinate system; and step S300, calculating and obtaining a homogeneous transformation matrix as a TCP calibration result, so that calibration is completed through single measurement, and the defect of alignment errors existing in a contact scheme is overcome.