578 results about "Lithium bromide" patented technology

The invention belongs to the technical field of battery thermal management, and discloses a battery pack and a phase change material coupling liquid cooling composite thermal management system.The battery pack comprises a plurality of battery structures, each battery structure comprises a lithium battery, a fin structure, a phase change material filling area and a liquid cooling plate, and the fin structure is arranged on the periphery of the lithium battery; the liquid cooling plate is arranged on the periphery of the fin structure, a phase-change material filling area is formed between the liquid cooling plate and the fin structure, and the phase-change material filling area is filled with a phase-change material for absorbing redundant heat and generating phase change, so that the temperature fluctuation of the battery is reduced. The lithium bromide heat pump and the direct-current power supply are combined, and accurate adjustment of the temperature of the battery pack is achieved through efficient heat exchange and intelligent control. The system can be rapidly switched between a cooling mode and a heating mode, and it is ensured that the battery is always kept within the optimal temperature range in different working environments.

The invention relates to a stable silk fibroin liquid condensation body, gel and a preparation method and application thereof, and belongs to the technical field of silk fibroin. The preparation method comprises the following steps: S1, dissolving silk fibroin in a lithium bromide solution, and then adding trypsin for incubation to obtain an enzyme-digested silk fibroin solution; and S2, performing low-temperature programmed centrifugal treatment including an induction stage, a nucleation stage and a liquid-liquid phase separation stage on the enzyme-digested silk fibroin solution, and cleaning to obtain the stable silk fibroin liquid-state aggregate, the method can reduce aggregate liquid drop aggregation and improve the particle size uniformity of the liquid drops.

Disclosed is a marine fuel cell-based integrated heat, electricity, and cooling supply system comprising a power supply system and a waste heat recovery system; the power supply system comprises wind turbine generator sets, solar generator sets, and a fuel cell power module; the waste heat recovery system encompasses a turbine power generation module and a lithium bromide refrigeration module; the fuel cell power module is connected to both the turbine power generation module and the lithium bromide refrigeration module; the turbine power generation module is used to generate electricity using waste heat. This approach fully exploits the waste heat from the exhaust gas generated by the fuel cell power module, resulting in a high overall energy utilization rate. The self-consumption electricity and pure hydrogen fuel for the integrated energy supply system can be obtained from solar and wind energy, ensuring low carbon emissions for the entire system.

The invention provides a preparation method and application of lithium sulfide. The preparation method comprises the following steps: reacting a lithium source with a sulfur source; the lithium source is a solid lithium-containing substance with the purity of 99% or above and the whiteness of 86 or above; the solid lithium-containing substance is selected from one or more of anhydrous lithium hydroxide, lithium hydroxide monohydrate, lithium carbonate, lithium chloride, lithium bromide and lithium nitrate. According to the method, a solid lithium-containing substance with the purity of 99% or above and the whiteness of 86 or above is used as a lithium source and reacts with a sulfur source, and the ionic conductivity value of the Li6PS5Cl solid electrolyte prepared from the obtained lithium sulfide is stable. Experimental results show that the ionic conductivity can stably reach more than 2mS / cm.

The invention belongs to the technical field of solid-state batteries, and provides a lithium-sulfur-phosphorus-chlorine-bromine solid-state electrolyte, a preparation method thereof and an all-solid-state battery. The preparation method comprises the following steps: mixing lithium sulfide and phosphorus sulfide, and carrying out ball milling to obtain a lithium-sulfur-phosphorus ternary mixture; in protective gas, the lithium-sulfur-phosphorus ternary mixture, lithium chloride and lithium bromide are mixed and then subjected to ball milling, and a lithium-sulfur-phosphorus-chlorine-bromine mixture is obtained; and carrying out heat treatment on the lithium-sulfur-phosphorus-chlorine-bromine mixture in protective gas to obtain the lithium-sulfur-phosphorus-chlorine-bromine solid electrolyte. The lithium-sulfur-phosphorus-chlorine-bromine solid electrolyte provided by the invention not only improves the electrochemical stability, but also maintains the high ionic conductivity characteristic.

The invention relates to the field of biological medicine, in particular to IMSFs hydrogel, a ferroptosis induction system, a preparation method and application. The IMSFs hydrogel comprises a hydrogel body, and ferroferric oxide nanoparticles and sorafenib are loaded in the hydrogel body in a wrapping manner. The IMSFs hydrogel can be used as an injectable cascade ferroptosis anti-cancer drug. The preparation method of the IMSFs hydrogel comprises the following steps: firstly, preparing a silk fibroin-hyaluronic acid hydrogel body: dissolving silk hydrogel and hyaluronic acid in a lithium bromide solution; bDDE is added into the dissolved solution, and incubation is carried out; then dialyzing and washing with deionized water to obtain a silk fibroin-hyaluronic acid hydrogel body; and then loading the sorafenib nanoparticles and the ferroferric oxide nanoparticles into the silk fibroin-hyaluronic acid hydrogel body. The IMSFs hydrogel disclosed by the invention integrates magnetic thermal response and drug controlled release, and can be injected to a tumor site, so that the treatment effect on TNBC is remarkably improved.

The utility model relates to the technical field of lithium bromide solution purifying devices, in particular to a lithium bromide solution filtering device which comprises a stainless steel cylinder, an upper liquid outlet chamber and a lower liquid inlet chamber which are distributed up and down are arranged in the cylinder, at least two filter elements are fixed on the lower liquid inlet chamber, and the upper portions of the filter elements are communicated with the upper liquid outlet chamber. A vacuumizing opening and a solution outlet are formed in the positions, corresponding to the upper portion of the upper liquid outlet chamber, of the barrel, a solution inlet is formed in the position, corresponding to the middle of the lower liquid inlet chamber, of the barrel, and a drain outlet is formed in the position, corresponding to the bottom of the lower liquid inlet chamber, of the barrel. The lithium bromide solution purification device is reasonable and compact in structure and convenient to use, impurities in a lithium bromide solution are effectively adsorbed and filtered, so that the lithium bromide solution is purified, and the refrigerating effect of a unit is effectively improved; under the state that the solution is not completely discharged, the device achieves the purpose of removing impurities from the solution and filtering the solution during normal operation of a unit, and is simple in structure, flexible to move and capable of being repeatedly used.

The invention provides silk fibroin gel and a preparation method thereof, and relates to the field of biological medicines.The preparation method comprises the steps that 1, degummed silk or regenerated silk fibroin is dissolved in a lithium bromide solution, and a silk fibroin solution is obtained; (2) adding a cross-linking agent and sodium hyaluronate into the silk fibroin solution, uniformly mixing, and incubating to obtain silk fibroin gel; wherein the use amount of the sodium hyaluronate is 2%-14% of that of the degummed silk or the regenerated silk fibroin. The silk fibroin gel prepared by the invention is stable in mechanical property, can be stably stored for a long time, and has excellent biocompatibility and filling property.

The invention discloses heat recovery rectification equipment and a rectification process for polyhydric alcohol, and relates to the technical field of polyhydric alcohol rectification. The device comprises a premixing kettle, a multi-group forming kettle, a low-vacuum condensation assembly, a high-vacuum condensation assembly, a transfer tank I, a condensate storage tank, a vacuum pump system, a dehydrating tower, a high-moisture alcohol storage tank, a lithium bromide unit, a dealcoholization tower, a light component removal tower, a waste liquid weighing assembly, a liquid phase feeding preheater, a detection assembly and a transfer tank II. The heat at the top of the dehydrating tower is guided into the heat source pipe of the lithium bromide unit, and the lithium bromide unit adopts steam to heat the internal generator, so that the heat at the top is recycled by adopting hot water, the recycling efficiency is high, the heat is used for generating steam to supply heat to the lithium bromide unit, and the heat recycling efficiency is high; the dehydration tower, the dealcoholization tower and the light component removal tower are matched for use, so that the content of ethylene glycol and 1, 4-butanediol in the final product is greater than or equal to 99.4% GC, the water content is less than or equal to 0.55%, and the rectification purity is greatly improved.

The invention relates to 3D printing silk fibroin-based conductive hydrogel as well as a preparation method and application thereof, and belongs to the technical field of hydrogel. The preparation method comprises the following steps: S1, adding silk fibroin, a graphene oxide dispersion liquid and glycidyl methacrylate into a lithium bromide solution for reaction, and performing dialysis, centrifugation and freeze drying to obtain modified silk fibroin; s2, dissolving the modified silk fibroin, polyethylene glycol diacrylate and a photoinitiator in water, and centrifuging and defoaming to obtain bio-ink; s3, preparing the bio-ink into the 3D printing silk fibroin-based conductive hydrogel through a DLP 3D printing technology. Methacrylic acid silk fibroin is used as a base material, polyethylene glycol diacrylate is used as a reinforcing material, and graphene oxide is introduced to construct the photocuring printing ink. In addition, the silk fibroin-based conductive hydrogel with excellent performance can be prepared by combining the structural design of multilevel porous and triple-period extremely small curved surfaces.

The utility model discloses an emptying low-pressure nitrogen recycling device, which belongs to the technical field of emptying nitrogen recycling, and comprises an air separation device and an air separation precooling system, the air separation precooling system consists of a water cooling tower, an air cooling tower, a lithium bromide unit, a matched cooling water pump and a matched chilled water pump, dirty nitrogen generated by the air separation device enters the water cooling tower through a first pipeline, and surplus low-pressure nitrogen generated by the air separation device sequentially passes through a low-pressure nitrogen emptying valve and a second pipeline to enter the water cooling tower. The low-pressure emptying nitrogen is used as cooling gas of the air separation pre-cooling system, the load of a refrigerating unit of the pre-cooling system is reduced, the surplus low-pressure nitrogen is recycled, and the device is simple, easy to operate and low in cost.

Provided in the present application is a preparation method for a silk fibroin hydrogel. The preparation method comprises the following steps: adding natural silk to a sodium carbonate solution, and heating the solution to obtain degummed natural silk; dissolving the degummed natural silk in a lithium bromide solution, and adding glycidyl methacrylate thereto to perform a reaction, so as to obtain a reaction solution; dialyzing the reaction solution to obtain a supernate; freeze-drying the supernate to obtain a freeze-dried protein; and mixing an antibacterial agent solution with a photoinitiator solution, adding the freeze-dried protein thereto, and irradiating same with blue-violet light to obtain a silk fibroin hydrogel. In the present application, glycidyl methacrylate is used to modify the degummed natural silk (fibroin); and an antibacterial agent and a photoinitiator are added in the hydrogel-forming step, and irradiation is performed with blue-violet light to subject the modified fibroin to curing crosslinking, thereby preparing a silk fibroin hydrogel having antibacterial performance, which hydrogel can be widely used in the fields of biomedical materials, etc. The preparation method of the present application is simple and fast, and has a high hydrogel-forming speed.

The present disclosure discloses a multi-energy coupled cooling / heating system for buildings in a long-term cooling region, including a multi-level management unit for heat sources, a solar energy heat collection unit, a lithium bromide absorptive refrigeration unit, a gas heat complementing unit, a ground source heat pump cooling / heating unit, and an indirect evaporative cooling waste heat recovery unit; the multi-level management unit for heat sources is connected to the solar energy heat collection unit, the lithium bromide absorptive refrigeration unit, the gas heat complementing unit, and the ground source heat pump cooling / heating unit; the ground source heat pump cooling / heating unit is connected to the indirect evaporative cooling waste heat recovery unit. The present disclosure adopts double-water tank structure, designs based on stratification principle, so as to achieve heat source classification management.

The invention belongs to the technical field of hydrogen energy comprehensive utilization, and particularly discloses an electricity, cold and heat multi-combined supply comprehensive utilization system and method based on hydrogen energy, and the electricity, cold and heat multi-combined supply comprehensive utilization system comprises a hydrogen fuel cell system, a heat exchanger, a hydrogen internal combustion engine, a flue gas hot water type lithium bromide unit and a ground source heat pump system. Cooling water of a hydrogen fuel cell system cooling pipe network exchanges heat with a first circulating medium of a heat system in a heat exchanger, and high-temperature flue gas of a hydrogen internal combustion engine flue gas pipe network and cylinder sleeve water of a cylinder sleeve water pipe network exchange heat with the first circulating medium in a flue gas hot water type lithium bromide unit. And the second circulating medium of the cooling system is cooled in the flue gas hot water type lithium bromide unit. The ground source heat pump system comprises a ground source heat pump unit which is used for heat exchange between low-temperature circulating water on the ground source heat pump rock-soil side and a first circulating medium. Hydrogen energy is fully utilized, waste heat generated by power generation of the hydrogen fuel cell and the hydrogen internal combustion engine is utilized for heating and cooling, and gradient utilization of hydrogen energy is achieved.

The invention relates to the technical field of absorption type heat exchange and heat supply technologies, in particular to an intelligent large-temperature-difference absorption type heat exchange unit and a heat exchange method.The intelligent large-temperature-difference absorption type heat exchange unit comprises an I-type unit, an II-type unit and a control system.The I-type unit and the II-type unit each comprise a heat pump host, a generator, a condenser, an evaporator, an absorber, a heat exchanger and heat exchange liquid; the heat exchange liquid conducts cascade heat exchange in the generator, the condenser, the evaporator, the absorber and the heat exchanger, the heat exchange liquid comprises a lithium bromide solution and refrigerant water, the control system comprises a controller and a standby plate heat exchange module, and the two heat pump main machines are both in communication connection with the controller. The multi-stage evaporation and multi-stage absorption process is adopted, cascade heat exchange can be achieved, and the temperature difference of inlets and outlets of the I-type unit and the II-type unit is increased, so that the outlet temperature of the units is reduced, irreversible heat transfer loss in the units is reduced, and the efficiency of the units is improved.

The invention belongs to the field of electrochemistry, and discloses a self-growing solid electrolyte interface in an electrolysis process and application of the self-growing solid electrolyte interface in aniline production. The method comprises the following steps: dissolving nitrobenzene, 2-piperidone, lithium bromide and tris (N, N-tetramethylene) phosphamide in an organic solvent to obtain an electrolyte, and placing the electrolyte in a single-chamber electrolytic tank provided with an anode and a cathode for electrolysis, so that a solid electrolyte interface automatically grows on the cathode along with electrolysis and generates electrocatalytic activity. According to the method, hydrogen is not used, so that the risks of combustion and explosion are avoided; the device can be coupled with clean energy power generation, and is environment-friendly and sustainable; the device is simple, the size of the device is obviously reduced, and an exchange membrane does not need to be used for separating a cavity; a catalyst does not need to be loaded on an electrode, and the cost and technical difficulty of synthesizing and loading the catalyst are avoided; the price is low and operation is easy; the problems of inactivation and shedding of the catalyst do not need to be considered, and the long-term stability is good.

The invention relates to a composite bone repair material, a preparation method and application, the preparation method comprises the following steps: immersing silkworm cocoons in a soap salt solution for degumming, drying to prepare degummed silk, dissolving the degummed silk in a lithium bromide solution, dialyzing for desalting, and concentrating to obtain a regenerated silk protein solution; mixing the regenerated silk fibroin solution with a gelatin solution to obtain a gel solution; mechanically shaking the gel solution, so that the gel solution is uniformly mixed, uniformly distributed bubbles are formed in the gel solution, and a silk protein / gelatin gel block is obtained; soaking and cleaning the silk protein / gelatin gel block in an ammonium sulfate solution to obtain silk protein / gelatin cross-linked gel; and freeze-drying the fibroin / gelatin cross-linked gel to obtain the fibroin / gelatin composite material. The composite bone repair material has the advantages that the composite bone repair material has a bionic porous structure, has excellent mechanical properties and also has good biocompatibility and osteogenic activity. The material can be applied to filling and regeneration repair of skull defects of the orthopedics department, the oral cavity, the plastic surgery (maxillofacial) and the neurosurgery department, and has high industrial production and clinical application prospects.

The utility model discloses a cold and heat cogeneration type lithium bromide unit. A condenser, a generator, a first absorber and a first evaporator are combined to form an absorption refrigerator, and the condenser, the generator, a second absorber and a second evaporator are combined to form an absorption heat pump; an inlet of the three-way valve is connected with a waste heat source, a first outlet of the three-way valve is connected with a tube pass of the generator, and a second outlet of the three-way valve is connected with a tube pass of the second evaporator; the cooling water pipeline is connected with the tube pass of the condenser and the tube pass of the first absorber; the heating water pipe is communicated with the tube pass of the second absorber; the refrigerating water pipe is connected with the tube pass of the first evaporator; according to the scheme, simultaneous refrigeration and heating of one set of equipment are achieved, and the refrigeration and heating capacity can be adjusted according to customer requirements.

The invention discloses a chloride ion battery for realizing bromine / chlorine synergistic chemistry and a preparation method thereof, and belongs to the technical field of redox batteries. The chloride ion battery takes graphite paper coated with vanadium pentoxide and graphite as a positive electrode, wherein the mass ratio of the vanadium pentoxide to the graphite is (0.5: 1)-(2: 1); zinc foil is used as a negative electrode, and an electrolyte is a mixed aqueous solution of tetramethylammonium chloride and lithium bromide. A double-halogen system of a V2O5-graphite composite positive electrode is adopted, chlorine species are chemically stabilized through the action of bromine, BrCl is generated in the charging process to inhibit Cl2 formation, and meanwhile, the intercalation energy barrier of chlorine is reduced; according to the salt-in-water electrolyte based on tetramethylammonium chloride, an electrochemical window is expanded to 3.0 V, and BrCl hydrolysis is effectively inhibited. The high-voltage halogen ion battery prepared by the method can realize a 2.3 V discharge platform, provides a specific capacity of 600mAh g <-1 >, has a capacity retention rate of 90% after 200 cycles, and opens up a safe development path for the high-voltage halogen ion battery without toxic gas emission. In addition, the battery system is simple in structure and has remarkable cost benefits.

The invention discloses a preparation method of a silk fibroin-polydopamine water-based binder, the silk fibroin-polydopamine water-based binder and application of the silk fibroin-polydopamine water-based binder. The preparation method comprises the following steps: (1) removing sericin from silkworm cocoons by using a sodium carbonate solution, drying, and dissolving degummed silk by using a lithium bromide solution; (2) dialyzing the solution dissolved in the step (2), and freeze-drying I to obtain water-soluble silk fibroin; (3) dissolving the obtained water-soluble silk fibroin in water to obtain a silk fibroin solution; and (4) adding dopamine hydrochloride into the silk fibroin solution for reaction, and performing freeze drying II to obtain the silk fibroin-polydopamine water-based binder. The binder prepared by the invention can effectively improve the ionic conductivity of a positive electrode and the transmission efficiency of sodium ions, and effectively improve the cycle performance and rate capability of a battery.

The invention discloses an evaporation pressure reference controller for a lithium bromide absorption refrigeration system. The evaporation pressure reference controller comprises a pressure detection unit, a reference unit, a comparison unit and an execution unit. The pressure detection unit detects absolute pressure in the evaporator in real time; the reference unit provides a reference signal of the target evaporation pressure; the comparison unit outputs a pressure deviation signal; and the execution unit adjusts the circulation volume of the lithium bromide solution so as to approach to the solution circulation volume under the full-load design working condition of the system, and the adjustment benchmark is the full-load design working condition of the system. The evaporation pressure serves as an absolute physical reference, the solution circulation amount is dynamically adjusted, the system is made to adapt to the heat source load, the concentration automatically avoids the crystallization line, and the functions of load monitoring, crystallization early warning, energy efficiency calculation and the like are provided. And the device is suitable for various low-grade heat source scenes such as hot water, steam and flue gas, can be used for new machine manufacturing and stock transformation, and reduces the equipment size and the manufacturing cost.

An electric lithium bromide absorption air conditioning unit and an energy storage refrigeration and heating system, including an electric lithium bromide absorption air conditioning unit and an electric heat storage device; the electric lithium bromide absorption air refrigeration unit comprises an electric heat generator; the electric heat generator comprises an electric heating device and / or an heat storage and heat exchanging device, and a grid power supply; the electric heating storage device comprises a heat storing and exchanging tank; the electric heating device is connected to the grid power supply. The generator used is an electric heating-type heat generator. By utilizing lithium bromide, it disrupts the conventional refrigeration compression cycle air conditioning system to address the global warming issue. This system can also give rise to independent energy storage cooling or heating solutions for grid-side energy storage projects, helping to solve the energy storage issues on the grid user side.

The utility model discloses an efficient hot water type lithium bromide absorption unit, which is characterized in that an evaporator, an absorber and a generator all adopt two-stage heat exchange, a condenser adopts single-stage heat exchange, the unit mainly comprises two independent solution circulation loops and a refrigerant pipeline, and a first-stage generator and a second-stage generator are connected in series through a pipeline. The second-stage absorber, the first-stage absorber and the condenser are connected in series through a pipeline, and the second-stage evaporator and the first-stage evaporator are connected in series through a pipeline. According to the unit, the consumption of high-grade heat energy is reduced or replaced by recovering medium-low temperature waste heat water in a factory, so that the comprehensive utilization efficiency of energy is improved; variable working condition adjustment can be achieved, and adaptability to temperature changes of waste heat water is good; meanwhile, power consumption of the unit can be reduced, and a better heat exchange effect can be achieved.

Disclosed in the present invention are a multi-energy coupling cooling and heating system for a building in a long-term cooling region, and an operation method. The system comprises a heat source grading management unit, a solar heat collection unit, a lithium bromide absorption refrigeration unit, a gas supplementary heating unit, a soil source heat pump cooling and heating unit, and an indirect evaporative cooling waste heat recovery unit; the heat source grading management unit is connected to the solar heat collection unit, the lithium bromide absorption refrigeration unit, the gas supplementary heating unit, and the soil source heat pump cooling and heating unit; and the indirect evaporative cooling waste heat recovery unit is connected to the soil source heat pump cooling and heating unit. A heat storage device of the present invention uses a double-water-tank mode, and is designed on the basis of the layering principle, graded heat management of different grades of energy sources is achieved, solar energy, geothermal energy, gas, waste heat, and evaporation cold energy of water are fully utilized, and the system exergy loss is reduced and the energy utilization efficiency is improved while annual cooling, heating and domestic hot water requirements of buildings are met.

The utility model belongs to the technical field of heat exchange equipment, and relates to a self-adjustable lithium bromide unit with a prediction function. The unit is composed of an absorber, an evaporator, a condenser, a low-temperature regenerator, a high-temperature regenerator, a low-temperature heat exchanger, a high-temperature heat exchanger, a refrigerant condensate heat recovery device, a low-temperature heat regenerator, a drainage device, a high-temperature heat regenerator, a dilute solution pump, a concentrated solution pump, a refrigerant pump, a temperature sensor, a flow regulating valve, a pressure sensor and a liquid level electrode. And the control center is provided with a prediction module. According to the utility model, the state of the unit is predicted through the prediction module, and the control center adjusts the unit according to the prediction result. And the running state of the unit adopting predictive control is more stable. When external conditions change drastically, the prediction control system responds more correctly and quickly. And safe and stable operation of the unit is ensured.

The invention provides a coupling distribution type energy waste heat and waste heat comprehensive utilization system and an operation method, a flue gas hot water heat exchanger is arranged at the tail of a waste heat boiler and used for converting flue gas waste heat into high-temperature hot water, and heat source water is provided for a boiler water supplementing preheating system, a water-water heat exchanger and a large-temperature-difference absorption type lithium bromide unit. The flue gas and hot water heat exchanger is arranged at the tail of the waste heat boiler, high-temperature hot water coming out of the tail of the waste heat boiler serves as a heat source of the external water-water heat exchanger and the large-temperature-difference absorption type lithium bromide unit, deep utilization of flue gas at the tail of the waste heat boiler is achieved, and low-temperature corrosion of a heating surface at the tail of the waste heat boiler is reduced; meanwhile, heat of sampling coolers, boiler fixed-connection sewage and waste steam condensation water returned from the outside of a plant is utilized in a gradient mode, a low-temperature heat pump unit and a solar photoelectric photo-thermal plate are adopted to provide cooling, heating and power loads for users, cross-seasonal heat storage water is coupled for cross-seasonal heat storage, and the energy utilization efficiency is improved.

The invention relates to preparation and application of a methotrexate-loaded silk fibroin gel drug release system, in particular to a methotrexate-containing gel preparation which contains methotrexate, silk fibroin and BDDE in a weight ratio of (1-2): (30-50): (6-10), the invention further provides a preparation method of the gel preparation, and the preparation method comprises the following steps: preparing the methotrexate-loaded silk fibroin gel drug release system by using the methotrexate-loaded silk fibroin gel drug release system, and preparing the methotrexate-loaded silk fibroin gel drug release system by using the methotrexate-loaded silk fibroin gel drug release system. The preparation method comprises the following steps: dissolving lithium bromide in water, adding silk fibroin and methotrexate, adding BDDE, and standing to form gel; the method specifically comprises the following steps: dissolving lithium bromide in water, adding silk fibroin and methotrexate, stirring at 50-70 DEG C for 0.5-2 hours, adding BDDE, and standing at 50-70 DEG C for 2-4 hours to form gel.

The invention discloses an interface modification layer as well as a preparation method and application thereof. The interface modification layer comprises an electron barrier layer and a lithium-philic interlayer which are sequentially arranged on the surface of a solid electrolyte, the material of the electron blocking layer is selected from at least one of lithium oxyphosphorus nitride, lithium fluoride, lithium nitride, lithium chloride, lithium bromide, lithium iodide and lithium oxynitride, and the material of the lithium-loving interlayer is selected from at least one of germanium, silver, gallium, sodium, potassium, magnesium, aluminum, calcium, strontium, barium and titanium. The interface modification layer can prevent lithium nucleation induced by electron leakage in the solid electrolyte, reduce the risk of short circuit, reduce the interface impedance, improve the lithium ion flux uniformity and interface wettability, and improve the overall performance and cycle stability of the battery.

The invention discloses fireproof flame-retardant phenolic resin and a preparation method thereof, and relates to the technical field of high polymer materials. When the fireproof flame-retardant phenolic resin is prepared, firstly, alkali lignin is depolymerized in a lithium bromide solution, and depolymerized lignin is prepared; carrying out multi-component reaction on the depolymerized lignin, amino-terminated polydimethylsiloxane, isonitrile diethyl methylphosphate and glacial acetic acid to prepare modified lignin; the preparation method comprises the following steps: carrying out reaction modification on montmorillonite and diisocyanate to prepare isocyanate modified montmorillonite; the isocyanate modified montmorillonite and 3-aminopropyltriethoxysilane are subjected to a reaction, and modified montmorillonite is prepared; and polymerizing phenol with the modified lignin, paraformaldehyde and modified montmorillonite, and discharging to obtain the fireproof flame-retardant phenolic resin. The prepared fireproof flame-retardant phenolic resin has the advantages of flame retardance, good toughness, high strength and aging resistance.

The utility model provides an efficient hot water type lithium bromide absorption unit arranged in an up-down structure, which is characterized in that an evaporator, an absorber and a generator all adopt two-stage heat exchange, and a condenser adopts single-stage heat exchange; the unit mainly comprises two independent solution circulation loops, a refrigerant pipeline, a first-stage generator and a second-stage generator, a second-stage evaporator and a first-stage evaporator are connected in series through a pipeline, and a first-stage absorber and a second-stage absorber are connected in parallel through a pipeline and then connected with a condenser in series. The first-stage generator and the second-stage generator are arranged left and right, the first-stage generator and the condenser are arranged up and down, the first-stage evaporator and the first-stage absorber are arranged up and down, and the second-stage evaporator and the second-stage absorber are arranged up and down. According to the unit, the consumption of high-grade heat energy is reduced or replaced by recovering medium-low temperature waste heat water in a factory, so that the comprehensive utilization efficiency of energy is improved, meanwhile, the overall structure of the unit is compact, and the occupied area is reduced due to the up-and-down structural arrangement.