22results about How to "Performance advantage" patented technology

The invention provides a sodium-ion battery positive electrode material and a preparation method thereof, a sodium-ion battery and electric equipment, and relates to the field of sodium-ion batteries. The positive electrode material of the sodium ion battery provided by the invention comprises an inner core and a shell, wherein the shell covers the inner core; the chemical formula of the inner core is NaaNixFeyMnzM1-x-y-zO2, wherein a is more than or equal to 0.9 and less than or equal to 1.05, x is more than 0 and less than 1.0, y is more than 0 and less than 1.0, z is more than 0 and less than 1.0, and 1-x-y-z is more than 0 and less than 1; the chemical formula of the shell is NaLarCa1-rO2, wherein r is more than 0 and less than 1; in the inner core, the element M comprises one or more of Al, Mg, Ti, Zr, Y, La, Ca, Zn, Cu, W, Li and B. The sodium-ion battery positive electrode material provided by the invention can reduce residual alkali on the surfaces of particles, can inhibit side reaction with an electrolyte, and improves the performance stability of the positive electrode material.

The invention discloses a degradable environment-friendly modified plastic master batch and a preparation method thereof, and belongs to the technical field of plastic master batches, the plastic master batch comprises the following raw materials by weight: 100 parts of polypropylene, 40-50 parts of polylactic acid, 10-20 parts of MOFs modified carbon fiber, 5-10 parts of a compatibilizer, and 1-3 parts of an antioxidant; and the compatibilizer is 2-methacryloyloxyethyl phosphorylcholine grafted polypropylene. The preparation method comprises the following steps: uniformly mixing the raw materials, and carrying out melt extrusion. Polypropylene and polylactic acid are used as basic resin, 2-methacryloyloxyethyl phosphorylcholine grafted polypropylene is used as a compatibilizer, and MOFs modified carbon fiber is used as a reinforcing material to prepare the modified plastic master batch which has good biodegradability and mechanical properties; the method has obvious performance advantages and technical competitiveness in practical application.

The invention belongs to the field of perovskite solar cells, and particularly relates to an interface modification compound, an interface modification layer, a perovskite solar cell and a preparation method. The interface modification compound is a compound shown as a formula I or a compound shown as a formula II, and the definitions of all groups in the formula I and the formula II are described in the specification. The interface modification layer containing the interface modification compound can effectively improve the wettability and the coverage rate of a perovskite solution on the surface of a hole transport layer, so that the photoelectric conversion efficiency and the performance repeatability of the perovskite solar cell are improved, and large-area production is realized. # imgabs0 #

The invention provides a polyvinyl butyral intermediate membrane as well as a synthetic method and application thereof, and particularly provides a high-transmittance polyvinyl butyral intermediate membrane with potential-induced degradation resistance as well as a synthetic method and application thereof. The synthesis method comprises the following steps: preparing PVB resin from polyvinyl alcohol and butyraldehyde; carrying out surface modification on the fumed silica by using a silane coupling agent; the preparation method comprises the following steps: grafting surface modified fumed silica and polyvinyl alcohol to obtain a PVA-silica graft, reacting the PVA-silica graft with butyraldehyde, adding a nano-material into the reaction product, and mixing to obtain a silica grafted PVB-nano-material mixture, the nano-material comprising ZnO and CeO2; and mixing the silicon dioxide grafted PVB-nano material mixture with PVB resin, and preparing a film, so as to obtain the PVB intermediate film. The composition and synthesis method of the PVB intermediate film are designed, and the PVB intermediate film with good electrical insulation performance, mechanical strength and transparency is obtained.

The invention provides a positive electrode material of a sodium ion secondary battery, a preparation method of the positive electrode material, the sodium ion secondary battery and electric equipment, and relates to the field of sodium ion batteries. The chemical formula of the positive electrode material of the sodium ion secondary battery provided by the invention is NaaNixFeyMnzM1-x-y-zO2, wherein a is more than or equal to 0.9 and less than or equal to 1.05, x is more than 0 and less than 1.0, y is more than 0 and less than 1.0, z is more than 0 and less than 1.0, 1-x-y-z is more than 0 and less than 1, and the element M is a metal element of which the valence is more than or equal to 2. According to the positive electrode material of the sodium ion secondary battery provided by the invention, the positive electrode active material is doped with the metal element containing the valence of + 2, + 3, + 4, + 5 or + 6 to regulate and control the molar weight of O-ions in lattice oxygen relative to O < 2-> when the positive electrode material of a sodium ion O3 structure is in a full charge state, so that the bonding strength of the doped metal element and oxygen is improved, and the content of high-activity O-free oxygen is reduced; and the sodium-electric O3 structure has relatively high structural stability.

The invention discloses a small-size high-efficiency large-current lithium battery active equalization circuit and a control method thereof, the small-size high-efficiency large-current lithium battery active equalization circuit comprises active equalization modules which are connected in parallel between two connected battery cells, and each active equalization module is composed of four switching tubes and a group of resonance branch circuit which is formed by connecting an inductor and a capacitor in series; n-1 active equalization modules are needed for a battery pack composed of N battery cells. The LC series branch serves as an energy temporary storage unit to replace a traditional inductance type single inductor or capacitance type multiple capacitors, the number of elements is reduced, meanwhile, low-loss energy transfer is achieved through resonance characteristics, and the equalization scheme has the advantages of being small in size, large in equalization current, small in equalization energy loss between battery cells, high in efficiency and the like.

The invention provides a real-time analysis method for measuring chemical substances in a brain of a living body. The real-time analysis method comprises the following steps: setting test parameters, and calculating the number of times of cyclic measurement; de-noising, checking, caching and measuring the collected original data by adopting a multi-thread working mode based on the number of cyclic measurement times; and verifying the clean data for the second time by using the verification algorithm, and comparing whether the data of the verification interval after the second verification is consistent with the original data of the same interval. High time resolution is realized; performing dynamic monitoring; real-time data processing; performing multi-parameter analysis; long-term monitoring; accumulating data; the sensitivity is high.

The invention relates to a preparation method of paper, in particular to a preparation method of formaldehyde removal paper. The efficient formaldehyde degradation catalyst is prepared by doping the nanoscale OMS-2 molecular sieve into the activated carbon fiber raw material and loading the metal silver, the formaldehyde adsorption degradation performance of formaldehyde removal paper is remarkably improved, and the persistence and stability of formaldehyde degradation are ensured by uniformly embedding the molecular sieve into paper pulp. Compared with the traditional method of directly adhering the adsorption and degradation components to the surface of the wallpaper, the formaldehyde removal paper prepared by the invention can more effectively remove formaldehyde in indoor air in long-term use, and provides a healthier and more environment-friendly living environment for residents.

The utility model provides a kind of high-low beam car light radiator with positioning structure, it is related to heat dissipation device field, the high-low beam car light radiator with positioning structure, including mounting bracket, the inboard of mounting bracket is slidably connected with connecting seat, the inner chamber top and bottom between connecting seat are fixedly connected with fixed plate in intermediate position, the both sides of fixed plate are fixedly connected with three limit rods, the outer side of limit rod is sleeved with compression spring, the high-low beam car light radiator with positioning structure can significantly improve installation efficiency, operator does not need to repeatedly align screw hole, adjust position when installing, clamping block locking mechanism can be tightly engaged with radiator and car light installation part, provide strong locking force, prevent radiator from loosening, displacement phenomenon due to factors such as vibration, jolt in the process of vehicle driving, effectively improve the reliability of radiator installation.

The invention provides a composite crystal lithium manganate material, a lithium ion battery and a preparation method, and relates to the technical field of lithium ion batteries. The composite crystal lithium manganate material is composed of a monoclinic layered structure, an orthogonal layered structure and a tetragonal distorted spinel structure according to different proportions. By regulating and controlling the proportion of the three crystal structures, stable lithium manganate and capacitive lithium manganate can be obtained, and the capacity or cycle performance of the material can be improved. And the preparation method of the composite crystal form lithium manganate material is simple, controllable in condition and suitable for large-scale production.

The invention provides an electronic paper TFT GOA drive design scheme, and relates to the technical field of electronic information, the electronic paper TFT GOA drive design scheme comprises a gate shift register integrated on a TFT, the gate shift register is composed of ten transistors and two capacitors, and each transistor and each capacitor form a logic circuit through a specific line connection mode. A gate shift register formed by ten transistors and two capacitors forms a GOA structure, the distribution and connection relation of the transistors and the capacitors in the GOA structure follow a specific design rule, and in a traditional electronic paper TFT non-GOA design scheme, the gate shift register is integrated on a DDIC, so that the DDIC is large in size and small in output quantity, and the production cost is indirectly increased. According to the invention, the grid shift register is integrated on the TFT, so that the DDIC size is greatly reduced. By taking 960S * 680G resolution as an example, the size of the GOAIC can be reduced by 38.5% compared with that of a non-GOAIC, and the output quantity of DDICs can be increased under the condition that the size of a wafer is fixed, so that the purchase cost of the DDICs is remarkably reduced.

A coal tar pitch-coated transition metal nitrogen-doped carbon nanotube composite electrode material, its preparation method, and its application are disclosed, belonging to the technical field of capacitor deionization electrode materials. The method includes: firstly, nitrogen-doping modification of carbon nanotubes to obtain nitrogen-doped carbon nanotubes; then, introducing a transition metal salt precursor and undergoing a first-stage heat treatment to obtain a transition metal-loaded nitrogen-doped carbon nanotube precursor composite material; subsequently, adding coal tar pitch and undergoing a second-stage heat treatment to obtain the coal tar pitch-coated transition metal nitrogen-doped carbon nanotube composite electrode material. In the obtained material, the nitrogen-doped carbon nanotubes provide a continuous conductive network and mass transfer channels, the transition metal component improves interfacial charge transport performance, and the coal tar pitch-derived carbon layer enhances structural stability and interfacial coupling ability, thereby improving the electroadsorption efficiency, rate performance, and cycle stability during capacitor deionization.

A novel integrated method for recovering lithium iron phosphate and ternary materials is applied to the field of recycling and reuse of positive electrode materials for lithium-ion batteries. The preparation method comprises the following steps: an acid solution is prepared according to a stoichiometric ratio and placed in a beaker, lithium iron phosphate waste is added thereto, and a constant temperature magnetic stirrer is used to fully stir the solution to perform a leaching reaction. After the reaction is completed, the ternary material is added thereto for further stirring, and a chelating agent is added, and a coprecipitation reaction is performed by controlling the pH value, reaction time, reaction temperature, etc. After centrifugation and drying, the obtained material is subjected to high-temperature calcination to prepare a ternary positive electrode material with a phosphate composite coating layer. The present invention adopts an acid leaching process and a coprecipitation process to uniformly recover the ternary waste material and the lithium iron phosphate waste material, repairs the ternary waste material, and provides it with a composite coating layer such as phosphate, thereby obtaining a recycled material with excellent performance.

The invention discloses a high-stability metal atom catalyst as well as a preparation method and application thereof. On the basis of commercially available multiwalled carbon nanotubes, metal impurities contained in the multiwalled carbon nanotubes are utilized, and the multiwalled carbon nanotubes are prepared through heat treatment. The high-stability metal atom catalyst is obtained by a simple process, can efficiently, quickly and stably catalyze electrochemical reaction, and is beneficial to industrial large-scale production and application.

This invention discloses a poly(4-methyl-1-pentene) aerogel, its preparation method, and its applications. By using camphene as a solvent for poly(4-methyl-1-pentene), a thermally induced phase separation process is initiated by controlling the cooling rate, followed by conventional drying to obtain a white aerogel with good self-supporting properties. The preparation method is simple and mild, requiring no complex processes or expensive equipment, and can be produced on a large scale. The aerogel possesses a rich microporous structure and extremely high solar reflectivity, making it suitable for radiative cooling for passive cooling. Furthermore, the aerogel prepared by this method exhibits excellent superhydrophobicity and thermal insulation properties, enhancing its potential for outdoor applications.

An integral geogrid includes a plurality of interconnected, oriented strands having an array of openings therein that is produced from a coextruded multilayer polymer sheet starting material. By virtue of the construction, the coextruded multilayer sheet components provide a crystalline synergistic effect during extrusion and orientation of the integral geogrid, resulting in enhanced material properties that provide performance benefits to use of the integral geogrid in soil geosynthetic reinforcement.

The utility model relates to the technical field of condensate water recovery, particularly provides a condensate water recovery device, an air conditioning system and a vehicle, and aims to solve the problem of poor effect of an existing motor home air conditioner condensate water treatment scheme. In order to achieve the purpose, the condensate water recovery device comprises a first liquid storage tank, a second liquid storage tank, a first water storage tank and a second water storage tank, the first pipeline is arranged between the first chamber and a condensate water outlet in a communicating manner, and a coarse filtering assembly is further arranged in the first pipeline in a communicating manner; the second pipeline is arranged between the second chamber and the water outlet in a communicating manner, and a fine filtering assembly is further arranged in the second pipeline in a communicating manner. According to the recycling device provided by the utility model, the condensate water is treated separately, so that a user can recycle the condensate water more flexibly according to specific conditions, the utilization rate of water resources can be improved, waste is reduced, the environment is protected, and the negative influence of the condensate water on the environment is reduced.

The invention discloses a coal mine belt conveying straight pump rotary type foam dust falling device and method. The device comprises a nozzle, an air inlet pipe, a mixing chamber, a rotary foaming chamber and a diffusion pipe. The upper end of the nozzle is provided with a foam liquid inlet for feeding foam liquid with a mixed proportion, and the lower end of the nozzle is embedded into the mixing chamber; the air inlet pipe is used for conveying compressed air, and one end of the air inlet pipe is communicated into the cavity of the mixing chamber; the mixing chamber is used for fully mixing foam liquid and compressed air to form mixed gas liquid; the rotary foaming chamber is connected with the lower end of the mixing chamber, and the inner diameter of the rotary foaming chamber is smaller than that of the mixing chamber; the diffusion pipe is connected with the lower end of the rotary foaming chamber, the inner diameter of the inner wall is gradually increased from the position to the tail end, and foamed foam is ejected from the tail end of the diffusion pipe. The device is simple in structure, convenient to install and high in dust falling efficiency, and the foaming degree can be adjusted according to actual scenes.

The invention provides a preparation method of a lithium-rich manganese-based composite positive electrode material coated with lithium ferric chloride and an application of a solid-state battery, a lithium ferric chloride coating layer is obtained in situ on the surface of the lithium-rich manganese-based positive electrode material through spray drying, and compared with a common coating layer, the lithium ferric chloride coating layer has the advantages that the coating layer is more uniform; the solid electrolyte has the advantages of good compatibility, excellent conductivity and ion conductivity and the like, and is a novel halide positive electrode material researched and developed for adapting to the solid electrolyte, so that the interface incompatibility between the positive electrode and the solid electrolyte is reduced. In addition, the excellent conductivity of lithium ferric chloride can reduce the use of a conductive agent on the positive electrode side, reduce ion and electron diffusion tortuosity and improve the diffusion coefficient. Meanwhile, the synthesis method is simple and effective, the cost is low, and the prepared composite positive electrode material can be used as an integrated all-solid-state positive electrode material and is suitable for large-scale production.

The invention relates to cat litter and a preparation method thereof. The cat litter comprises beer malt residues, corn starch and an adhesive. The invention also provides a preparation method of the cat litter. The method comprises the following steps: mixing and stirring the beer malt residues, the corn starch and the adhesive, grinding, granulating and forming, drying and sieving powder to prepare the cat litter. The malt cat litter disclosed by the invention has excellent water absorption capacity, caking strength, deodorization effect and collapsibility, and is an environment-friendly, natural, healthy and reliable cat litter with excellent performance.

The invention discloses a photovoltaic panel fault detection method based on a multi-scale scaling feature fusion network, and belongs to the technical field of photovoltaic panel fault detection, and the method comprises the following steps: S1, network construction; s2, model training; and S3, fault detection. The invention provides a pruning efficient multi-scale attention mechanism to improve the feature representation capability, a ReLU activation function is adopted to optimize feature fusion, and network structure global pruning is performed to improve the model detection precision and the model generalization; a temperature scaling loss function is provided to relieve detection target category imbalance, and parameter calculation of the model is optimized to remarkably improve the quality of the anchor frame; a backbone network based on a C2f-PEMA network is designed, an improved PEMA module is combined with a C2f module, and a feature fusion module is added to enhance the feature expression ability so as to improve the model detection precision.

This invention discloses a dynamic multi-spot projection optical system based on an LED light source, comprising an LED light source, a reflector, a grating sheet, a condenser lens, a concave mirror, and an optical reflection assembly. The LED light source is located at the bottom of the reflector, and the grating sheet has a light-transmitting area with a preset pattern shape. The reflector is composed of several planar mirrors A, and the concave mirror is composed of several planar mirrors B. The light emitted by the LED light source is formed into a patterned beam by the grating sheet, and the conical reflector divides and reflects the beam into multiple sub-beams, which are then guided to the condenser lens by the optical reflection assembly. This invention, using a low-cost, laser-free, and safe LED solution, achieves complex dynamic light and shadow effects comparable to or even surpassing laser projection through innovative optical design, while maintaining consistent image clarity within a projection distance range of 2-15 meters.