14results about How to "Diffusion rate is fast" patented technology

The invention relates to the technical field of hydrogen storage, in particular to a hydrogen storage nano composite material, the composition of the hydrogen storage nano composite material is Tix (LaaCebMgc) 2-x (FedCoeMnf) y, x is larger than or equal to 1 and smaller than or equal to 1.5, y is larger than or equal to 1 and smaller than or equal to 1.5, the sum of a + b + c is larger than or equal to 1 and smaller than or equal to 1.2, c is larger than or equal to 0.5, the sum of d + e + f is larger than or equal to 1 and smaller than or equal to 1.05, and f is larger than or equal to 0.5. Comprising an equipment body, supporting carrier plates are symmetrically and fixedly arranged on the two sides of the equipment body, supporting bottom rings are fixedly arranged at the lower ends of the supporting carrier plates, a feeding pipe is fixedly arranged at the upper end of the equipment body, and a discharging bottom opening is formed in the lower side of one end of the equipment body; and a fixed material receiving plate is fixedly arranged in the position, corresponding to the discharging bottom opening, of the interior of the equipment body, a plurality of upper discharging openings are formed in the positions, on the upper side of the discharging bottom opening, of the equipment body, and the invention further relates to a preparation method of the hydrogen storage nano composite material, and the preparation method is used for producing the hydrogen storage nano composite material.

The utility model discloses a water reducing agent reaction kettle, which relates to the technical field of reaction kettles, and comprises a kettle body provided with a reaction chamber and a feed opening which are communicated with each other; the stirrer is located in the reaction chamber, and the axis of the stirrer and the axis of the kettle body are eccentrically arranged; the rotating assembly comprises a connecting plate, a first driving mechanism, a second driving mechanism and a plurality of connecting rods; wherein the stirrer is rotationally connected with the connecting plate; one end of each connecting rod is rotationally connected with the kettle body, and the other end of each connecting rod is rotationally connected with the connecting plate; the first driving mechanism is used for driving the connecting plate to rotate around the axis of the kettle body; the second driving mechanism is used for driving the stirrer to rotate around the axis of the stirrer; the rotation directions of the first driving mechanism and the second driving mechanism are opposite, so that the stirrer can prevent the materials from forming eddy current while stirring the materials, the diffusion rate of ingredients is increased, and the production efficiency of the water reducing agent is improved.

The invention provides a negative electrode binder, a negative electrode plate and a secondary battery. The negative electrode binder comprises a granular polymer, wherein the polymer comprises a vinyl aromatic structural unit and an acrylate structural unit; the particle size D10 of the polymer ranges from 200 nm to 1300 nm, the particle size D50 of the polymer ranges from 400 nm to 1500 nm, and the particle size D90 of the polymer ranges from 500 nm to 2000 nm. The negative electrode binder provided by the invention has a relatively large particle size, and can improve the low-temperature discharge rate capability and peel strength of the battery.

The invention relates to a preparation method of a seaweed derived alloy carbon sodium ion battery negative electrode material, and belongs to the technical field of sodium ion batteries, and the specific scheme comprises the following steps: step 1, drying cleaned seaweed leaves; 2, chopping the dried seaweed leaves, and calcining and carbonizing the chopped seaweed leaves and an activating agent; 3, washing the carbonized material with deionized water until the carbonized material is neutral, and drying to obtain a seaweed precursor; and 4, uniformly grinding the seaweed precursor and two metal salts, and reacting under microwave radiation to obtain the seaweed-derived alloy carbon sodium ion battery negative electrode material. The seaweed-derived alloy carbon prepared by the method can generate more active sites to store sodium ions, and the diffusion rate of the sodium ions is improved, so that the electrochemical performance is improved. In addition, in the synthesis process, the speed is very high, no solvent exists, and the yield is high.

The application discloses a low-temperature Prussian white sodium ion battery, which comprises a positive electrode, an electrolyte and a negative electrode, the positive electrode is selected from a Prussian white positive electrode material; the electrolyte comprises a sodium salt, an organic solvent and an electrolyte additive; the concentration of the sodium salt in the electrolyte is 0.4-0.7 mol / L; and the electrolyte additive comprises a fluorinated carbonate and a fluorinated acetate. The low-temperature Prussian white sodium ion battery disclosed by the application has high specific capacity and long cycle life at a low temperature of-20 DEG C.

The invention provides an ultrahigh-strength rare earth magnesium alloy deformed material and a preparation method thereof. The ultrahigh-strength rare earth magnesium alloy deformed material is composed of the following components in percentage by mass: 10%-11% of Gd, 2.5%-4.0% of Y, 0.35%-0.5% of Zr, 0.2%-0.6% of Ce and the balance of Mg. According to the ultrahigh-strength rare earth magnesium alloy deformed material provided by the invention, microelements (such as Ca, Ce, La and Ag which are controlled within 1mass%) are added into the magnesium alloy, so that the microstructure and texture of the alloy can be regulated and controlled, the precipitation of a second phase is promoted, the mechanical property of the magnesium alloy is improved, and the material cost and weight are reduced; and the method has important significance on cyclic utilization and sustainable development of magnesium resources.

The invention discloses a preparation method and application of a lithium-sulfur battery catalyst. The method utilizes the spatial confinement effect of three-dimensional porous graphene and forms a local micro-electric field in situ based on the ferroelectric piezoelectric effect of Nb-N-C during the charge and discharge process, thereby accelerating the catalyst to convert soluble LiPSs into insoluble discharge product Li2S, thereby achieving rapid and complete catalytic conversion of LiPSs and significantly improving the rate performance and cycle stability of the lithium-sulfur battery. Therefore, the prepared lithium-sulfur battery catalyst can be used to prepare lithium-sulfur battery positive electrode materials and further assembled into a lithium-sulfur battery.

The invention relates to the technical field of battery materials, in particular to a preparation method of an alpha-zirconium phosphate coated ternary positive electrode material, which comprises the following steps: S1, dissolving and mixing a zirconium source and a phosphorus source, and then introducing into preparation equipment for gelation reaction to obtain a precursor; wherein the preparation equipment detects the viscosity change of reactants in the gelation reaction process in real time, the gelation reaction process is divided into different stages according to the viscosity change, and the corresponding stirring speed and temperature are adjusted according to the different stages; s2, outputting the precursor obtained in S1 from preparation equipment, washing and drying, and calcining at high temperature for 2-6 hours to obtain the alpha-zirconium phosphate nanosheet; and S3, mixing and ball-milling the alpha-zirconium phosphate nanosheet and the ternary positive electrode material in an ethanol medium, and drying to obtain the alpha-zirconium phosphate coated ternary positive electrode material. According to the preparation method of the alpha-zirconium phosphate coated ternary positive electrode material, provided by the invention, the alpha-zirconium phosphate coated ternary positive electrode material can be simply and quickly obtained, and the preparation method has a good application value.

The present invention belongs to the technical field of pesticides, and specifically relates to the application of a binary system of dodecyl-β-D-maltoside and glycerol as a pesticide adjuvant. The present invention uses a binary system of dodecyl-β-D-maltoside and glycerol to increase the amount of pesticide deposited on the surface of plant leaves. The dodecyl-β-D-maltoside / glycerol binary system suppresses the bouncing and splashing of pesticide droplets on the leaves of hydrophobic crops through the rapid diffusion of surfactants, and improves the effective deposition of pesticide droplets on low-concentration super-hydrophobic / hydrophobic leaves; and dodecyl-β-D-maltoside and glycerol both have good biocompatibility and biodegradability, and the mixed system of the two does not change the viscosity of water. In summary, the binary system of dodecyl-β-D-maltoside and glycerol provided by the present invention effectively increases the amount of pesticide droplets deposited on the surface of target plant leaves.

The invention belongs to the technical field of resin synthesis, and discloses a method for synthesizing UV-cured flexible vinyl resin by a microreactor. The method comprises the following steps: (1) preparing a reaction liquid: mixing binary acid, a solvent, methacrylic acid, epoxy resin, a catalyst and a polymerization inhibitor to obtain the reaction liquid; and (2) adding the reaction liquid into a microreactor for reaction to obtain the UV-cured flexible vinyl resin. The micro-reactor device is used, the problem that the temperature of a reaction system is not controlled due to a strong exothermic reaction is solved, gel curing of products due to too high temperature is avoided, the reaction rate is also improved, a target product can be synthesized within extremely short time, and due to the fact that the temperature of the reaction system is constant, the diffusion rate is high, the reaction selectivity is high and side reaction products are few, the yield is high. Therefore, the synthesized product is colorless.

The invention discloses a cheap and simple method for preparing a single crystal copper foil. The method comprises the following steps: (1) pretreating a polycrystalline copper foil; (2) putting the pretreated polycrystalline copper foil on a high-temperature-resistant substrate, and then stably pushing the whole structure into a tubular furnace; (3) detecting the air tightness of the tubular furnace; (4) gas washing: injecting reducing gas into the tubular furnace to ensure that oxygen in the tubular furnace is thoroughly cleaned; and (5) continuously introducing reducing gas into the tubular furnace, heating the copper foil to a surface melting temperature, keeping for 10-30 minutes, then cooling to an annealing temperature, preserving heat, and naturally cooling the copper foil to room temperature along with the furnace after the heat preservation stage is ended, thereby obtaining the copper foil. Rotation of crystal lattices and migration of crystal boundaries are promoted through heat treatment, and therefore the single crystal copper foil with the lowest exposed Gibbs free energy is obtained.

The invention relates to a method for endowing a metal organic framework material with isotope distinguishing capability by modifying a pore channel of the metal organic framework material, and belongs to the technical field of nano porous materials. The method utilizes the characteristics of uniform pore channels and rigid framework of the metal organic framework material. In the synthesis process, the regulator is directly doped into the pore channel of the metal organic framework material, so that the transport diffusion rate of small molecules in the pore channel can be influenced. And meanwhile, due to the characteristic of a crystal structure of the metal organic framework material, quantitative regulation and control on pore channel obstructions are allowed, so that the diffusion rate of small molecules in pore channels is regulated. When the diffusion rate is adjusted to reach a limit value, a small gap of similar small molecules in physicochemical properties can be amplified, and H2O and D2O can be effectively distinguished. The simple and convenient adjusting strategy can be widely applied to all reported metal organic framework material systems at present, which cannot be realized by a traditional method. This is believed to open up a new possibility for enriching / separating hydrogen isotope water.

The invention discloses a multi-channel double-layer membrane blood cell interference resisting electrochemical test piece and application thereof, and belongs to the technical field of electrochemical test pieces, the multi-channel double-layer membrane blood cell interference resisting electrochemical test piece comprises a base material, a sensing electrode, a top sealing layer and a double-layer membrane structure composed of an enzyme reaction membrane layer and a blood cell filtering membrane layer, and the double-layer membrane structure is located above the sensing electrode. According to the invention, a completely independent multi-channel microfluidic system is realized through physical structure partition, and a three-dimensional bulge structure is arranged at a blood inlet of each microfluidic channel, so that the blood suction starting speed and the sample entering efficiency are remarkably improved, and the problems of unstable blood suction efficiency and difficulty in avoiding cross interference of the existing multi-channel design are solved on the structural aspect. According to the invention, a double-layer membrane structure is adopted, a physical filter membrane layer with a stable aperture structure is constructed by blending PU / PVA, and the physical filter membrane layer is superposed on a glucose dehydrogenase reaction layer, so that red blood cells are prevented from entering a detection area from the source, and the influence of HCT on signals is reduced.

This invention provides a method for preparing perovskite titanate materials with preferred growth on the (311) crystal plane and its application. The structural formula of the perovskite titanate material is A. x B y TiO4, wherein element A is at least one of Na, Ca, and La, and element B is at least one of Y, Ni, and Sr, and 0 < x ≤ 1, 0 < y ≤ 1. The perovskite titanate material prepared by this invention has a low crystal defect content, and the (311) crystal plane is the dominant crystal plane. The (311) direction is the direction of rapid diffusion of lithium ions in the bulk structure of the perovskite titanate material. The perovskite titanate material dominated by the (311) crystal plane has a short ion diffusion distance and a fast overall lithium ion diffusion rate, thereby improving the rate performance of the material.