18results about How to "Inhibit oxidative decomposition" patented technology

The invention provides a preparation method and application of an air-stable sulfide composite electrolyte, and the method comprises the following steps: S1, weighing an M source (M = Cd, Mn and Zn), P2S5 and S powder according to a ratio of 1: 1: 3, adding iodine for catalysis, carrying out heat preservation at 700-720 DEG C for 6-7 days, and carrying out K + insertion, Li + exchange and ultrasonic centrifugation to prepare a LiMyPS3 nanosheet dispersion liquid; s2, dissolving PEO and LiTFSI in acetonitrile to form a film, drying to obtain a pure PEO film, immersing the pure PEO film into a dopamine Tris buffer solution with the concentration of 2 mg / ml and the pH value of 8.5, oscillating for 12-24 hours in an oxygen environment, and washing and drying to obtain a PDA-coated PEO film; and S3, carrying out suction filtration on the LiMyPS3 dispersion liquid to obtain a self-supporting membrane, stacking according to the sequence of "PDA-coated PEO membrane-sulfide membrane-PDA-coated PEO membrane", carrying out isostatic pressing at 10-20 MPa, and then carrying out vertical cutting at 0 DEG C to obtain the 20-30 [mu] m composite membrane. The film has the advantages of good air stability, almost no loss of conductivity after 30 days, room temperature conductivity of 9.2-10.2 ms / cm, excellent interface bonding force and mechanical strength, and stable window of 4.3-4.5 V, is adaptive to a high-voltage positive electrode, and can be used for a high-energy-density solid-state lithium battery.

This invention provides a method and application for the efficient determination of functional components in Acer truncatum leaves, relating to the field of plant functional component detection technology. The method includes the following steps: (1) two ultrasonic-assisted extractions using 70% methanol, followed by merging the extracts; (2) detection using high-performance liquid chromatography-tandem mass spectrometry. This invention achieves simultaneous, accurate, rapid, and stable detection of multifunctional components in Acer truncatum leaves.

The application belongs to the technical field of lithium ion batteries, and relates to a sulfide solid electrolyte composite oxide positive electrode material and a preparation method and application thereof. The positive electrode material comprises oxide positive electrode particles, a first coating layer coated on the outer side of the oxide positive electrode particles, and a second coating layer coated on the outer side of the first coating layer, wherein the first coating layer is a conductive oxide material, and the second coating layer is a sulfide solid electrolyte material. By constructing a barrier composed of the conductive oxide material between the oxide positive electrode particles and the sulfide solid electrolyte material, the application can effectively prevent the reaction between lattice oxygen released from the oxide positive electrode particles and the sulfide solid electrolyte, effectively avoid the oxidative decomposition of the sulfide solid electrolyte, and further enhance the stability of the interface structure; meanwhile, a good electronic transport channel is formed, which is conducive to the transport of electrons and ions. The positive electrode material has excellent electrical properties and wide market application prospects.

The utility model discloses a cooling liquid collecting cover for a plant negative pressure extractor, which relates to the technical field of plant extraction and comprises a hinge, an extraction box for extracting plant juice under negative pressure is arranged on the hinge, and the cooling liquid collecting cover further comprises a covering mechanism connected with the hinge, a covering mechanism is arranged in the extraction box and used for opening or closing the extraction box and cooling extraction steam, the covering mechanism comprises a fixing ring fixedly connected with the hinge, an arc-shaped cooling shell is fixedly connected to the lower portion of the fixing ring, a hollow shell is fixedly arranged on the upper portion of the fixing ring, and a cooling component is arranged in the hollow shell. And the cooling part is used for cooling the arc-shaped cooling shell, a fixing plate is integrally arranged on the hollow shell, and air holes are formed in the fixing plate. The cooling liquid collecting cover for the plant negative pressure extractor is convenient for condensing plant extraction steam extracted at high temperature, so that the plant extraction efficiency is improved.

The invention belongs to the technical field of batteries, and discloses a dual-ion battery and a preparation method thereof. The preparation method comprises the following steps: adding a polymer monomer in a burdening stage, uniformly dispersing the polymer monomer in a positive pole piece and a negative pole piece, finally injecting an electrolyte added with a polymer initiator, and initiating an in-situ polymerization reaction through high temperature, so that the liquid electrolyte is changed into a gel state. The invention also discloses the dual-ion battery prepared according to the method. The polymer monomers are uniformly distributed in the positive and negative pole pieces, so that the binding force of the active substance and the current collector is enhanced, and the pole piece expansion in the battery circulation process is reduced. In addition, the electrolyte is changed into a gel state, so that the oxidation potential of the electrolyte is remarkably improved, the stability of a positive and negative electrode interface is enhanced, the consumption of the electrolyte is reduced, and the safety performance of the battery is improved.

The application discloses an electrolyte and a battery. The electrolyte comprises an electrolyte, a solvent, a first additive and a second additive. The first additive is selected from at least one of structural formula (1) to structural formula (4), and the second additive is selected from at least one of structural formula (5) to structural formula (7). The first additive has high oxidation resistance, and contains an unsaturated double bond which can be polymerized to form an SEI protective film on a negative electrode. The protective film inhibits the volume expansion of the silicon negative electrode. The second additive can form a polymer film on the surface of a positive electrode under high voltage, which can improve the oxidation resistance of the electrolyte. Through the joint action of the first additive and the second additive, a stable film layer is formed on the surface of the electrode, the volume expansion of the electrode is inhibited, the interface on the surface of the electrode is prevented from being damaged by expansion stress, the contact between the electrolyte and the electrode material is blocked, the oxidation resistance of the electrolyte is improved, the performance stability of the battery under high voltage is improved, and the high-temperature storage and cycle performance of the battery are improved.

This application relates to the field of lithium-ion battery manufacturing technology and discloses a method for preparing a stabilized positive electrode sheet for all-solid-state batteries. The method includes: dispersing positive electrode active material, sulfide solid electrolyte, and binder in a non-polar solvent under an inert atmosphere to obtain a positive electrode slurry; coating and drying to obtain a precursor layer; simultaneously applying pressure and temperature to the precursor layer for interface stabilization heat treatment; and cooling to obtain the positive electrode sheet. This invention utilizes a temperature-pressure coupling process to reduce the yield stress of the electrolyte and promote binder rheology through thermal effects, achieving electrode densification under relatively low mechanical pressure, effectively avoiding the problem of active material particle breakage caused by traditional high-pressure cold pressing processes. This method reduces the positive electrode interface impedance and enhances the interfacial bonding force, thereby significantly improving the structural integrity and cycle life of all-solid-state batteries.

The application relates to the technical field of balloon catheters, in particular to a high-strength and durable balloon catheter for deep veins, which comprises a catheter and a connecting pipe, the inner wall of the catheter is movably connected with a communicating pipe, one side of the communicating pipe corresponding to the catheter is provided with an iron filament, the outer wall of the catheter is sequentially provided with a polytetrafluoroethylene layer, a toughness layer and a wear-resistant layer, one end of the catheter is fixedly connected with the connecting pipe, the outer wall of the connecting pipe is provided with a balloon main body, the upper end of the balloon main body is provided with a reinforcing layer and a thermoplastic polyurethane layer, the side close to the balloon main body of the connecting pipe is fixedly connected with a displacement section, the material of the balloon main body can be tightly combined with the thermoplastic polyurethane layer and the reinforcing layer, so that the balloon main body is not easy to fall off, the durability of the device is increased, the user can fold the catheter into a shape required by the human body, the use flexibility of the device is improved, the high-strength and durability of the device are increased, and the service life is prolonged.

The invention discloses a biomass-based porous carbon material as well as a preparation method and application thereof, and belongs to the technical field of preparation of porous carbon materials. The method comprises the following steps: dissolving a phosphorus source and a carbon source in a solvent, and drying to obtain a pyrolysis precursor; and carrying out temperature programming pyrolysis on the precursor in an air atmosphere to obtain the product. According to the method, a phosphorus source and carbon source synergistic carbonization system is constructed, and the dual effects that the phosphorus source forms a compact carbon layer to isolate oxygen at a low-temperature stage and forms a stable POC bond with a carbon skeleton at a high-temperature stage are utilized, so that stable carbonization of the biomass carbon source is successfully realized in an air atmosphere, and the dependence of a traditional process on an inert atmosphere is broken through. The prepared porous carbon material has excellent specific surface area and structural stability, and can be widely applied to the fields of electromagnetic wave absorption, pollutant adsorption, catalytic carriers and the like.

The invention discloses an inert electrolyte and a preparation method and application thereof.The inert electrolyte comprises alkali metal salt and an organic solvent, the organic solvent comprises a first solvent, and the first solvent is a methylated inert solvent; the methylation inert solvent is selected from at least one of a first organic ester compound, an organic ether compound, an organic fluorinated compound and an organic nitrile compound. Through methylation molecular engineering modification on first solvent molecules, inert methyl groups can increase inertness of the solvent molecules and coordination of anions, oxygenolysis of the positive electrode under high voltage and reductive decomposition of the negative electrode are effectively inhibited, stable and uniform interfacial films are formed on the surfaces of the positive electrode and the negative electrode, and the positive electrode and the negative electrode are more stable. And the cycling stability of the battery under high voltage is obviously improved. Meanwhile, the electrolyte has a wide electrochemical window, efficient lithium ion transmission capacity and high wide-temperature adaptability, and the battery can keep stable cycle performance in the low-temperature environment of-20 DEG C and the high-temperature environment of 60 DEG C.

The application discloses low-moisture propylene carbonate-based lithium ion energy storage electrolyte and a preparation process thereof, and belongs to the technical field of electrolyte preparation, and is used for solving the technical problem that the cycle performance of lithium ion batteries needs to be further improved due to the incompatibility of propylene carbonate-based electrolyte with a graphite negative electrode and the side reactions caused by moisture in the system in the prior art, and specifically comprises the following components in parts by weight: 60-80 parts of propylene carbonate, 2-5 parts of alkenyl-terminated fluoropolyether, 10-15 parts of lithium salt, 3-6 parts of boron-containing amine ester flame-retardant water-removing agent and 1-5 parts of functional additive. The boron-containing amine ester flame-retardant water-removing agent is prepared, cooperates with the alkenyl-terminated fluoropolyether, removes trace moisture in the electrolyte, blocks the hydrolysis reaction of lithium hexafluorophosphate, avoids the generation of hydrofluoric acid, simultaneously optimizes the electrochemical compatibility of the electrolyte with the negative electrode, and significantly improves the cycle life and interface safety of the battery.

This invention relates to the field of packaging bag technology, specifically to a moisture-proof and antibacterial composite packaging bag for traditional Chinese medicine. It comprises an outer protective film layer, a middle buffer transition layer, a moisture-proof barrier layer, an antibacterial functional layer, and an inner contact film layer. These layers are arranged from the outside in. The outer protective film layer, middle buffer transition layer, moisture-proof barrier layer, antibacterial functional layer, and inner contact film layer are composited using food-grade adhesives. The middle buffer transition layer is made of low-density polyethylene elastic film. The moisture-proof barrier layer is composited with polyvinyl alcohol high-barrier film and passivated aluminum foil film. The antibacterial functional layer uses food-grade polyolefin film as the substrate. The inner contact film layer uses food-grade polyethylene film. This invention has the following advantages: it integrates multiple benefits such as wear resistance, long-lasting moisture and oxygen barrier, active antibacterial properties, and safety and non-toxicity. Its service life and protective effect are far superior to traditional single-layer and ordinary double-layer packaging.

The invention provides an extraction method of wheat lutein, and belongs to the technical field of agricultural product processing and natural product extraction. The extraction method comprises the following steps: mixing a wheat processing powder product with an n-butyl alcohol and water mixing system to obtain a wheat solvent system; and mixing the wheat solvent system with an acid solution, and heating and extracting to obtain the wheat xanthophyll. Under the condition of acid catalysis, acid can promote ester bond breakage by releasing protons, hydrolysis of ester can be effectively promoted, release of combined xanthophyll can be promoted, the extraction amount of xanthophyll can be increased, and meanwhile, the acid can also inhibit oxygenolysis of xanthophyll. Heating extraction is carried out in xanthophyll extraction, the acid action effect can be improved, solvent permeation is accelerated, and the xanthophyll extraction efficiency can be further improved. Results of the embodiment of the invention show that the extraction efficiency of xanthophyll in different varieties of wheat flour can be remarkably improved by adopting the extraction method compared with a conventional method.

The invention relates to a non-aqueous electrolyte and a lithium ion battery, the non-aqueous electrolyte comprises an electrolyte salt, an organic solvent, a first additive and a second additive, the chemical structure of the first additive is as shown in formula I; the chemical structure of the second additive is shown as a formula II. According to the non-aqueous electrolyte disclosed by the invention, two additives with specific structures are creatively added into a system, and the two additives cooperate with each other, so that the side reaction of lithium battery positive electrode transition metal dissolution and a negative electrode interface is reduced, the cycle stability is improved, and the application requirements of batteries at high temperature and high pressure are met.

This invention relates to the field of all-solid-state secondary battery technology and discloses a high-performance all-solid-state secondary battery equipped with a stabilized positive electrode, comprising a positive electrode, a negative electrode layer, and a solid electrolyte layer. The positive electrode is manufactured by coating and drying a slurry containing 80%-88% positive electrode active material, 10%-16% sulfide solid electrolyte, 1%-2% conductive agent, and 1%-2% binder, followed by a heat-pressurization treatment at 100℃-250℃ and 10MPa-100MPa. This invention constructs a dense interface stabilization layer in situ between the positive electrode active material and the sulfide electrolyte by applying a thermo-pressure coupling treatment to the positive electrode precursor. This stabilization layer improves the physical contact between the solid and solid interfaces and reduces interfacial impedance. Simultaneously, this stabilization layer acts as a physical barrier, inhibiting the oxidative decomposition of the electrolyte under high voltage, slowing capacity decay, and improving the battery's cycle life and structural stability.

The utility model discloses a high impact ABS (acrylonitrile butadiene styrene) flame-retardant master batch, and particularly relates to the field of flame-retardant master batches, the high impact ABS flame-retardant master batch comprises a master batch body, an outer protective layer is fixedly adhered to the inner side of the master batch body, the outer protective layer is a nano zinc oxide-acrylate coating, one side of the outer protective layer is provided with an antibacterial coating, and the antibacterial coating is coated on the inner side of the master batch body. The antibacterial coating is arranged on the inner side of the base layer and is made of a quaternary ammonium salt compound material, a middle reinforcing layer is arranged on the inner side of the antibacterial coating and is made of a nanocellulose-epoxy resin coating material, and a flame-retardant reinforcing layer is arranged on one side of the middle reinforcing layer. The outer protective layer, the antibacterial coating and the middle reinforcing layer are arranged, the middle reinforcing layer provides rigid support for the antibacterial coating, the antibacterial coating is prevented from being peeled off due to deformation of a base body, the antibacterial rate is kept above 99% for a long time, meanwhile, the outer protective layer isolates ultraviolet rays and water vapor, an antibacterial agent is prevented from being oxidized and decomposed, and the service life of the antibacterial coating is prolonged. Therefore, the antibacterial validity period is prolonged, and the practicability of the device is improved to a certain extent.

The invention relates to the field of material science and engineering, and particularly discloses a freeze-dried ginseng, dried tangerine peel and bamboo white tea block. The method comprises the following steps: firstly, performing quality-divided extraction, performing high-temperature extraction on ginseng and cordyceps militaris, performing low-temperature extraction on big bamboo white tea, and separating to obtain pericarpium citri reticulatae volatile oil; combining the water-phase extracting solutions, adding the pericarpium citri reticulatae volatile oil, and emulsifying and homogenizing to form a stable oil-in-water emulsion system; and finally, injecting the emulsified material liquid into a mold, and performing vacuum freeze drying to obtain a finished product. Through differential temperature control, the problem of active ingredient loss caused by different heat sensitivities of multi-component raw materials is solved; the uniform dispersion and in-situ embedding of the fat-soluble volatile oil are realized by utilizing a high-shear emulsification technology, and the layering of feed liquid and the oxidation of grease are prevented; and by constructing an endogenous solid framework, the second-speed rehydration of the product is realized under the condition of no exogenous excipient, the retention rate of the active ingredients of the obtained freeze-dried block is high, and the redissolved solution is uniform and clear and has excellent stability.

The application discloses a kind of sea cucumber peptide product's extraction purification processing equipment, it is related to sea cucumber peptide product processing equipment technical field, solve the sea cucumber original pulp in the middle of fermentation cylinder cannot be fully touched and grinded, and the sea cucumber original pulp grinds in the process of being short in fermentation cylinder and stays, so that the sea cucumber original pulp particles in fermentation cylinder because the technical problem of insufficient grinding;Including: fermentation cylinder, the top of fermentation cylinder is provided with feed inlet;Multiple groups of guide grinding mechanism are arranged in the inside of fermentation cylinder and installed, the guide grinding mechanism includes the conical guide platform that the sea cucumber original pulp that falls in the inside of fermentation cylinder is guided;The sea cucumber original pulp in the present application can be guided to side grinding wheel in fermentation cylinder, the situation that the sea cucumber original pulp cannot be grinded near the middle position does not appear, improve the sea cucumber original pulp particle degree of thickness, facilitate the sea cucumber original pulp fully fermented, while the sea cucumber original pulp adhered on conical guide platform is scraped to side grinding wheel, facilitate the sea cucumber original pulp fully grinded.