71 results about "Liquid lithium" patented technology

The invention discloses a tantalum-doped lithium metal composite negative electrode and a preparation method thereof. The preparation method comprises the following steps: melting solid-state lithium metal into liquid-state lithium metal; the tantalum metal is added into the liquid lithium metal to be mixed and stirred, the tantalum-doped lithium metal composite material is obtained after standing and cooling, and the adding amount of the tantalum metal is 0.1-10 wt% of the mass of the liquid lithium metal; and rolling the tantalum-doped lithium metal composite material to obtain the tantalum-doped lithium metal composite negative electrode, so that the tantalum is introduced into the lithium metal through a melt doping process, and the formed tantalum-doped lithium metal composite negative electrode can inhibit the growth of lithium dendrites and prolong the cycle life of the battery.

The invention belongs to the technical field of electrolyte, and particularly relates to a method for preparing liquid lithium hexafluorophosphate from sodium hexafluorophosphate. The method comprises the following steps: adding a sodium source into a hexafluorophosphoric acid aqueous solution for neutralization reaction to obtain a sodium hexafluorophosphate aqueous solution, then extracting to remove water, drying to obtain a sodium hexafluorophosphate solid, and heating and decomposing the sodium hexafluorophosphate solid to obtain phosphorus pentafluoride gas; the phosphorus pentafluoride gas is not mixed with SO3, POF3, HF and other impurity gases, a complex refining and purifying process is not needed, and the phosphorus pentafluoride gas with the purity exceeding 99.9% can be obtained after simple purification and can be directly used for synthesizing liquid lithium hexafluorophosphate. The method does not generate waste acid, does not need a complicated phosphorus pentafluoride gas purification process, is particularly suitable for the requirements of the lithium battery industry on high-purity electrolyte, and has the remarkable advantages of high product purity, small environmental pollution, low production cost and the like.

The invention provides a single-crystal cobalt-free lithium-rich manganese-based positive electrode material as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a cobalt-free lithium-rich manganese-based precursor material, a lithium source and a grain boundary separation auxiliary agent to obtain a mixed material; the mixed material is subjected to two-stage sintering, the two-stage sintering comprises first sintering and second sintering in sequence, and the single-crystal cobalt-free lithium-rich manganese-based positive electrode material is obtained, wherein primary crystal grains of the cobalt-free lithium-rich manganese-based precursor material are of a sheet structure. According to the invention, the cobalt-free lithium-rich manganese-based precursor material of which the primary crystal grains are of a sheet structure is taken as a raw material, and under the action of the grain boundary separation auxiliary agent, a two-stage sintering process is cooperatively matched, so that the single-crystal cobalt-free lithium-rich manganese-based positive electrode material which is uniform in grain size, high in dispersity, complete in crystal grains and continuous in interface is obtained, and the cobalt-free lithium-rich manganese-based positive electrode material is not only suitable for a liquid lithium ion battery, but also suitable for a lithium ion battery. The material is more suitable for a solid-state lithium ion battery, and the electrochemical performance of the battery is effectively improved.

The invention relates to the technical field of battery materials, in particular to a preparation method of a lithium sulfide material. The preparation method of the lithium sulfide material comprises the following steps: S1, mixing lithium carbonate and sodium sulfide, heating to a first heating temperature to melt lithium carbonate and react with sodium sulfide, separating out a solid phase, and collecting a first solid; s2, the first solid is heated to a second heating temperature, the second heating temperature is higher than the melting point of sodium carbonate and lower than the melting points of lithium sulfide and sodium sulfide, a solid phase is separated out, and a second solid is collected; s3, the second solid is heated to a third heating temperature, the third heating temperature is higher than the melting point of lithium sulfide and lower than the melting point of sodium sulfide, a liquid phase is separated out, and a liquid lithium sulfide material is prepared; and S4, carrying out curing treatment on the liquid lithium sulfide material to prepare a solid lithium sulfide material. The preparation method improves the reaction conversion rate, simplifies the process flow, reduces the cost and improves the product purity.

The invention discloses a new energy battery fire extinguishing material based on cyanated selenotetrafluoroquinone. The new energy battery fire extinguishing material is prepared from the following raw materials in percentage by weight: 10 to 12 percent of cyanated selenotetrafluoroquinone, 78 to 82 percent of PFPE / HFE mixed carrier, 4 to 6 percent of ZIF-8 coated zinc borohydride and 3 to 5 percent of WSe2 nanosheets. The invention further discloses the fire extinguishing material and application of the fire extinguishing material in a battery fire extinguishing agent. The fire extinguishing material can be stably stored in a daily environment of-45 DEG C to 60 DEG C (viscosity is less than or equal to 30cP, vapor pressure lt; the high-efficiency fire extinguishing performance is kept in the whole thermal runaway process of the battery at the temperature of 60-800 DEG C, and integrated electron capture (llt; 50 ms), free radical quenching (lt; 800ms), slow-release cooling (lt); the thermal runaway is blocked in the whole process within 3 seconds, and the differential protection requirements of a liquid lithium ion battery, a sulfide / oxide solid-state battery and a lithium metal battery are met.

The invention relates to the technical field of lithium hydride preparation processes, in particular to a lithium hydride hydrogen storage material and a synthesis process thereof.The synthesis process comprises the steps that high-purity metal lithium is cut, cleaned and then dried in an inert atmosphere, obtained high-purity metal lithium particles are put into an evaporation device, and gradient heating is conducted in the inert atmosphere to obtain lithium steam; adding the activated catalyst into a reaction kettle, cooling the lithium steam to obtain liquid lithium, introducing the liquid lithium into the reaction kettle, introducing high-purity hydrogen, heating to react, and cooling to obtain lithium hydride; putting into crushing equipment, crushing in an inert atmosphere, and sieving to obtain lithium hydride particles; and packaging and carrying out quality inspection to obtain the lithium hydride hydrogen storage material. According to the lithium hydride hydrogen storage material and the synthesis process thereof, liquid-gas reaction of liquid lithium and hydrogen avoids continuous influence of passivation films such as an oxide layer and a nitride layer on the surface of solid lithium, and finally the lithium hydride hydrogen storage material with high purity and high activity is prepared.

In order to solve the safety problem after formation of the semi-solid lithium ion battery, the invention provides an electrolyte and the semi-solid lithium ion battery, the electrolyte comprises the following raw materials: a lithium salt, an organic solvent, a polymeric monomer, a cross-linking agent and an initiator, the polymeric monomer is one or more of substances shown in the following structural formula, and n is an integer between 1 and 6. According to the semi-solid lithium ion battery obtained by in-situ polymerization of the electrolyte, after formation, the battery can meet the safety in the recycling process, and meanwhile, the cycle performance basically equivalent to that of a liquid lithium ion battery is obtained.

The invention belongs to the technical field of material preparation, and particularly relates to a preparation method and application of a nanoscale lithium-silicon alloy. Silane gas and diluent gas are mixed and injected into a plasma thermal field generated by a radio frequency plasma generator to generate silicon atoms, then inert gas serves as carrier gas, a lithium source is fed into the plasma thermal field to generate lithium atom steam, and the silicon atoms and the lithium atom steam are alloyed in the high-temperature thermal field; under the driving of cooling airflow, the lithium-silicon alloy particles enter the cyclone classification chamber through high-temperature and low-temperature cooling areas, the unreacted lithium source and the large-particle-size lithium-silicon alloy particles are retained in the cyclone classification chamber, and the small-particle-size lithium-silicon alloy particles are brought into the collection chamber, are adsorbed on the surface of the filter and are blown off by periodic back-blowing airflow; lithium silicon alloy powder to be coated is obtained; and finally, the nano lithium silicon alloy to be coated is introduced into the fluidized bed, silicon and carbon coating is conducted through a vapor deposition method, the lithium silicon alloy with the inner coating layer being element doped silicon and the outer coating layer being carbon is prepared, and the alloy can be used as a thermal battery, a solid-state battery negative electrode material and a liquid lithium ion battery lithium supplementing agent.

The application discloses a fusion reactor liquid blanket tritium breeding rate online regulation system simulation method and device, wherein the simulation device comprises a fusion blanket neutron transport module, a blanket breeding agent Monte Carlo-activation coupling burnup simulation module, a blanket coolant feeding module, a blanket tritium extraction module, a blanket coolant purification treatment module, a blanket tritium breeding rate calculation module and a blanket tritium breeding agent circulation system; the simulation device realizes the circulation of the blanket coolant nuclide based on the mass conservation equation and the burnup equation. The application is based on the Boltzmann neutron transport equation, the neutron flux of the blanket coolant is simulated by a Monte Carlo method, the time and space variation law of the chemical composition of the system material is obtained by solving the burnup equation, the replenishment demand of the blanket coolant system is calculated, and the influence of the replenishment composition on the blanket tritium breeding rate is simulated, so that the application can be widely applied to the fusion reactor liquid lithium lead blanket.

The utility model discloses a distillation reaction device for preparing liquid lithium bis (fluorosulfonyl) imide, which is characterized in that 1-3 feed pipes are arranged at the top of an evaporation tank main body, a steam output pipe is also arranged at the top of the evaporation tank main body, a temperature detector is arranged on the steam output pipe, a material output pipe is arranged at the bottom of the evaporation tank main body, and the temperature detector is arranged on the material output pipe. A constant-temperature electric heater is arranged at the bottom of the interior of the evaporation tank main body, and the distillation reaction device for preparing the liquid lithium bis (fluorosulfonyl) imide improves the conditions that in the actual use process in the prior art, evaporation is only performed on the surface of liquid under the condition that boiling is not performed in the heating process, and the evaporation efficiency is limited by the surface area of the liquid; through a spraying mode, the surface area of liquid evaporation is greatly increased, the evaporation efficiency is improved, and the overall working efficiency of equipment and an assembly line is improved.

The invention discloses a low-cost solid electrolyte of a molecular sieve composite polymer binder as well as a preparation method and application of the low-cost solid electrolyte, and belongs to the technical field of electrochemistry and solid-state batteries. A low-cost solid electrolyte of a molecular sieve composite polymer binder is composed of molecular sieve powder and an ionic conductive polymer binder, and the molecular sieve powder comprises at least one of transferable lithium ions, sodium ions or potassium ions. The slurry coating film-forming technology adopted by the invention is highly compatible with the electrode coating process of the existing liquid lithium ion battery, a high-temperature sintering step does not need to be introduced, the existing battery production line equipment can be used for transformation and upgrading, and the industrialization threshold and the equipment investment of the solid-state battery are greatly reduced.

The invention relates to an asymmetric double-layer flame-retardant solid electrolyte as well as a preparation method and application thereof. According to the asymmetric double-layer flame-retardant solid electrolyte as well as the preparation method and the application thereof, the problems that an electrolyte in a liquid lithium ion battery is easy to leak, great potential hazards exist, and the conductivity of a polymer electrolyte membrane is low can be solved. The first layer of the asymmetric double-layer flame-retardant composite solid electrolyte comprises the following main components: a polymer matrix A, a polymer matrix B, zwitterionic liquid SPZ, an inorganic ceramic oxide, a lithium salt, a solvent, a cross-linking agent and a photoinitiator; the first-layer solution and the second-layer solution mainly comprise a polymer base B, zwitterionic liquid SPZ, lithium salt, a solvent, a cross-linking agent and a photoinitiator, the first-layer mixed solution and the second-layer mixed solution are respectively subjected to tape casting onto a polytetrafluoroethylene mold, ultraviolet cross-linking and heating are performed to obtain two-layer ionic liquid composite solid electrolyte, and then the two layers are sequentially stacked together to obtain the composite solid electrolyte. The asymmetric double-layer flame-retardant composite solid electrolyte is obtained.

The embodiment of the present application discloses a kind of lithium battery control device and control method, wherein lithium battery control device includes, liquid lithium battery loop, solid-state lithium battery loop, voltage sensor and control part;Liquid lithium battery loop and solid-state lithium battery loop are in parallel;Liquid lithium battery loop includes liquid lithium battery pack and first control switch;Liquid lithium battery pack and first control switch are in series;Solid-state lithium battery loop includes solid-state lithium battery pack, second control switch and current-limiting resistor;Solid-state lithium battery pack, second control switch and current-limiting resistor are in series;Solid-state lithium battery loop further includes third control switch;Second control switch and current-limiting resistor are in parallel with third control switch;The embodiment of the present application solves the problem that battery pack voltage is not matched when liquid lithium battery pack and solid-state lithium battery pack are used together, while realizing that the life of liquid lithium battery pack and solid-state lithium battery pack is nearly consistent.

The application belongs to the technical field of magnetic confinement nuclear fusion devices, and discloses a liquid lithium divertor device. The liquid lithium divertor device comprises a liquid film generator, the liquid film generator comprises a liquid lithium input area and a liquid lithium conveying area; a divertor target plate and a heating bottom plate are detachably connected to the liquid lithium conveying area; the inlet of the liquid lithium input area is in communication with a conveying pipeline, a plurality of first sub-flow channels are arranged in a dendritic structure in the liquid lithium input area; the inlet of the liquid lithium conveying area is in communication with the outlet of the first sub-flow channel through a vertical flow channel, the outlet of the liquid lithium conveying area is in contact with the top of the divertor target plate, and the flow direction of the liquid lithium in the liquid lithium conveying area is parallel to the flow direction of the liquid lithium in the divertor target plate. The liquid lithium divertor device can continuously convey liquid lithium to the target plate and make the flow uniform, can improve the spreading of the liquid lithium when flowing along the target plate, obtain a larger spreading area, prevent spattering of the liquid lithium, and conveniently replace the target plate.

The present application belongs to the technical field of high-purity metal preparation, and particularly relates to a vacuum distillation device. The vacuum distillation furnace body is sequentially provided with an evaporation zone, a condensation zone and a melting zone from bottom to top. The evaporation zone is provided with a reflux plate. The condensation zone is provided with a gas guide pipe, a condensation disc, a flow guide pipe and a liquid seal assembly. The flow guide pipe is inserted into the gas guide pipe. The liquid seal assembly is provided with a liquid lithium valve on a liquid seal pipeline. The melting zone is provided with a cone valve and a feed inlet. The vacuum distillation furnace body is located in a heating furnace chamber. The vacuum distillation furnace body is in communication with a vacuum ingot casting box. The vacuum ingot casting box is provided with a crucible, a rotating unit, a motor and heating fins. The present application purifies lithium metal by using a vacuum distillation method, and realizes the preparation of high-purity lithium metal.

A functionalized coated separator and lithium-ion battery, by grafting and modifying the polymer backbone PVDF of the coating layer with single-ion conductor lithium salt, effectively constructs a single-lithium-ion conduction ion transport layer at the electrode / electrolyte interface without changing the original function of the coating layer. In lithium-ion battery systems, only lithium ions actually participate in the electrochemical reaction and energy conversion process. The movement of anions in the electrolyte will cause their accumulation on the electrode surface, leading to increased battery polarization and interfacial side reactions. The PVDF coating layer itself can effectively improve the adhesion between the separator and the electrode and the wettability with the electrolyte. By introducing immobilized anionic groups on the PVDF backbone, the functionalization of interfacial single-lithium-ion transport provided by this invention can further optimize the performance of the coating layer, the separator, and the liquid lithium-ion battery.

The utility model discloses a material stirring device for preparing liquid lithium bis (fluorosulfonyl) imide, which is characterized in that a base is connected with a stirring tank rotating rod through a bearing, a stirring tank connecting seat is arranged in the middle of the stirring tank rotating rod, and the stirring tank connecting seat is connected with a stirring tank; according to the material stirring device for preparing the liquid lithium bis (fluorosulfonyl) imide, the problems that in the prior art, in the actual using process, a stirring shaft is still driven by a motor, the aging rate of a sealing ring of the stirring shaft is high under the acid condition, frequent maintenance is needed, and the stirring shaft is prone to being damaged are solved. Under the condition of high use cost, by arranging the inner rotor, the rotating fan blades, the outer rotor, the driving motor and other structures, materials can be stirred in a magnetic stirring mode, holes formed in equipment are reduced, a sealing ring does not need to be arranged, the maintenance period is prolonged, and the use cost is reduced.

The utility model relates to the technical field of nozzle structures, in particular to a nozzle structure for jetting a liquid lithium target. According to the technical scheme, the nozzle structure comprises a liquid inlet pipe and a flow trace adjusting valve connected to the output end of the liquid inlet pipe, the bottom end of the flow trace adjusting valve is connected with a second-stage Laval nozzle in a sealed mode, the tail end of the second-stage Laval nozzle is connected with a concave back wall, and a liquid collecting groove is formed in the lower portion of the concave back wall; the flow trace adjusting valve comprises a diameter expanding section and a restraining section, the liquid inlet pipe is connected with the diameter expanding section, and the restraining section is internally composed of a plurality of sets of densely-arranged holes. The nozzle structure provided by the utility model can continuously and stably form a jet liquid lithium film, can form a stable liquid lithium film on a concave back wall, and meets the formation requirement of a liquid lithium target.

The application discloses a continuous preparation process and device of liquid lithium hexafluorophosphate, and comprises the following operation steps: A10), continuously feeding lithium fluoride suspension to the top of a hexafluoride reaction plate tower; continuously feeding gaseous high-purity phosphorus pentafluoride to the bottom of the hexafluoride reaction plate tower; A20), carrying out reaction in the hexafluoride reaction plate tower, and feeding the reaction product from the bottom of the hexafluoride reaction tower into a bottom tank; A30), feeding the remaining reaction product output by a circulating heat exchanger into a liquid lithium hexafluorophosphate product extraction tank in one way and into a lithium fluoride suspension preparation kettle in the other way; and A40), connecting a filter to the product extraction end of the product extraction tank to remove the excessive solid-phase material after reaction, so as to obtain the liquid lithium hexafluorophosphate, the hydrogen chloride content of which is less than 25 ppm, and the hydrogen fluoride is not detected; the application has high continuous level and stability, does not need additional deacidification treatment, and has obviously higher output efficiency, and does not have the hidden troubles of shutdown maintenance due to problems such as blockage.

The present invention relates to the technical field of lithium electrolysis cells. A device, system and method for quantitatively discharging liquid metallic lithium from a lithium electrolysis cell. The device comprises a lithium collection device and a lithium buffer tank (5) connected to the lithium collection device, wherein an inlet of the lithium buffer tank (5) is connected to a lithium electrolysis cell (1) by means of the lithium collection device, so as to receive liquid lithium from the lithium electrolysis cell (1) and temporarily store the liquid lithium in the lithium buffer tank (5), and an outlet of the lithium buffer tank (5) is connected to a lithium storage tank (10) via a lithium transfer pipe (7), such that when a liquid level of the liquid lithium in the lithium buffer tank (5) reaches a high limit, a valve (8) arranged on the lithium transfer pipe (7) is opened to allow the liquid lithium in the lithium buffer tank (5) to be discharged, under the action of pressure, through the lithium transfer pipe (7) into the lithium storage tank (10) located at a lower position, and after a certain amount of liquid lithium is discharged, the valve (8) is closed. The device enables automatic, quantitative and safe transfer of metallic lithium in the lithium electrolysis cell, avoiding secondary contamination during a lithium discharge process, and reducing the difficulty of system maintenance and the labor intensity of workers.

This invention belongs to the field of lithium battery material technology, specifically relating to an ultrathin lithium metal anode material with (110) crystal orientation, its continuous preparation method, and its application. The preparation method of this invention includes: Step 1: synthesizing an MXene dispersion; Step 2: preparing an MXene base film or an MXene-modified copper current collector, using it as a substrate; Step 3: heating a lithium source to a molten state under a protective atmosphere to obtain liquid lithium metal; Step 4: adhering the liquid lithium metal to the surface of the MXene base film or the MXene-modified copper current collector as a coating using a hot-pressing method, controlling the thickness of the lithium metal coating by adjusting the lithium loading, and then cooling to room temperature, etc. The preparation method of this invention, through the control of MXene, can prepare lithium metal foil with a thickness of 2-50 micrometers and a preferred (110) crystal orientation, and is suitable for roll-to-roll continuous production. The ultrathin MXene base film-lithium metal composite foil of this invention can be used as a lithium metal battery anode.

The application belongs to the technical field of functional hydrogel and its adsorption and extraction application, and provides Mxene / polyazole flexible composite hydrogel, a preparation method and application thereof, so as to solve the problem of poor flexibility and mechanical property of the current hydrogel. The hydrogel is MXene / PPy / HMO composite flexible hydrogel, and is directly used as a bulk material to realize lithium recovery. Lithium ion sieve (HMO), MXene and polyazole network are crosslinked with each other to form a three-dimensional network structure; the mass of MXene is 1%-5% of the polyazole hydrogel, a Mxene network is formed through physical crosslinking, the contained elements are carbon and titanium, and the atomic number ratio is 2:3; a polyazole hydrogel network is formed through chemical crosslinking. In the presence of MXene and HMO, polyvinyl alcohol and sodium dodecyl sulfonate are introduced, and in-situ polymerization can be carried out. The hydrogel has good flexibility and stretchability, and can be self-healing. The method is simple and easy to implement, and a flexible liquid lithium adsorbent can be directly prepared.

Existing pre-lithiation methods are beset by many limitations, such as non-uniformity, over-lithiation, poor compatibility with battery components, and scaling challenges. This disclosure provides several technical solutions to the problem of effectively pre-lithiating electrodes. Some variations provide an electrochemical method of pre-lithiating a lithium-ion battery containing lithium vanadium oxide. Porous electrodes ameliorate the V2O5 pre-lithiation procedure, enhancing overall efficiency. Various configurations are disclosed, employing two or three electrodes. Other methods pre-lithiate any electrode material for a lithium-ion battery, utilizing a liquid lithium-ion conductor in a transport path with an electrode precursor powder material, to react lithium with the electrode precursor material, thereby generating a pre-lithiated electrode. Still other methods pre-lithiate any electrode material for a lithium-ion battery, mechanically agitating an electrode precursor material with a solid lithium-containing material, to react lithium with the electrode precursor material, thereby generating a pre-lithiated electrode. Experimental data are presented to demonstrate the technology.

The application discloses a method for controlling elution end point in lithium ion trapping agent preparation process, and relates to the field of liquid lithium resource recycling. Based on the positive correlation between the conductivity of eluent and the concentration of free ions in solution, the best conductivity setting value considering structural stability and lithium removal activation effect is determined through the corresponding relationship between step elution test and product trapping performance. In the process of trapping agent elution and activation, the conductivity of eluent is monitored in real time online by using a conductivity meter. If the measured value is greater than the setting value, the cycle elution is carried out; if the measured value is less than or equal to the setting value, it indicates that the elution and activation are completed and the elution is terminated, so that the lithium ion trapping agent with high activity and stable structure is obtained. The conductivity test method is simple and fast, and replaces the inductively coupled plasma emission spectrometry test method, so that the quality fluctuation problem caused by the difficulty in judging the elution end point in the preparation of lithium ion trapping agent can be solved, and the monitoring technical support for the preparation of lithium ion trapping agent with high activity and stability is provided.

The invention relates to a preparation method of lithium sulfide, lithium sulfide and a system. The method comprises the following steps: preparing lithium sulfide under the condition of isolating air and moisture; a first raw material containing a liquid lithium source and a second raw material containing a sulfur element are respectively sprayed into a cyclone reactor in a horizontal or rotational flow downward manner through a first spraying inlet and a second spraying inlet on the cyclone reactor for contact and reaction; wherein the liquid lithium source comprises molten lithium and / or a lithium-liquid ammonia solution; and the second injection port is positioned below the first injection port. According to the invention, the molten lithium and / or lithium-liquid ammonia solution and the sulfur-containing material are sprayed into the cyclone reactor to contact and react, so that the liquid lithium source and the sulfur-containing material are rapidly mixed and contacted, and the retention time of the material in the reactor can be accurately controlled; and continuous, rapid and large-scale production of high-purity and particle-size-controllable battery-grade lithium sulfide can be realized.

The application discloses a kind of liquid lithium battery negative pole coating material and preparation method thereof, belong to lithium battery negative pole material technical field.The application uses ethylene tar as raw material, sequentially through filtration, distillation, polymerization, blending process, produce the liquid lithium battery negative pole coating material provided by the application is used for the coating treatment of lithium battery graphite negative pole material, can be fully wetted with graphite negative pole material, bonding;The "core-shell" structure formed after the graphite negative pole material is treated using the liquid coating material, including core and the coating layer coated on the surface of core.Coating layer is firm, stable, and presents uniformity.The liquid lithium battery negative pole coating material is in liquid state at normal temperature, and has good flowability;Coking value is higher;It is easy to store, convenient for transportation and use.

This invention discloses a method, apparatus, platform, and storage medium for design optimization of liquid lithium-lead circuits under strong magnetic environment. The method includes: establishing a liquid lithium-lead circuit model, defining basic model parameters, operating boundary conditions, and temperature-dependent physical properties of liquid lithium-lead within the model; dividing the model into multiple computational units, and obtaining the local magnetic field vector at the spatial location of each computational unit based on the strong magnetic field environment parameters under tokamak device operating conditions; obtaining the strong magnetic field coupling calculation results of the liquid lithium-lead circuit model based on the local magnetic field vector at the spatial location of each computational unit; and modifying the model based on these results to output the final liquid lithium-lead circuit design result. This achieves magnetohydrodynamic and thermal-fluid coupling design of the liquid lithium-lead circuit, improving the reliability of the circuit design.

The invention relates to a solid-phase synthesis method for large-scale preparation of a two-dimensional polyphthalocyanine framework and application thereof. The preparation method comprises the following steps: grinding and mixing 1, 2, 4, 5-benzene tetraformonitrile serving as a raw material with alkali metal salt, transition metal salt or multiple composite salts, and then carrying out sealed heating in a vacuum or inert gas atmosphere to carry out solid-phase polymerization reaction so as to prepare a target product by a one-step method. The synthesis method is simple and convenient to operate, green, environment-friendly, low in cost and easy for large-scale production, and a series of alkali metal or transition metal-containing two-dimensional polyphthalocyanine framework materials with high crystallinity and high thermal stability can be prepared with high yield. When the two-dimensional poly (cobalt phthalocyanine) is used as a liquid lithium-sulfur battery positive electrode catalyst, excellent electrochemical catalysis performance is shown. In addition, the method has universality, can be expanded to synthesize a two-dimensional polyphthalocyanine framework containing double metals and multiple metals, and is not limited to an oxidation-reduction reaction of lithium polysulfide in a liquid lithium-sulfur battery.

The utility model discloses a liquid lithium hexafluorophosphate synthesis device which comprises a preparation kettle, a synthesis kettle and a refining kettle, a lithium fluoride feed port, a solvent feed port, a lithium fluoride content measuring device, an online thermometer A and an observation port are arranged at the top of the preparation kettle; the top of the synthesis kettle is provided with a preparation liquid feeding hole, a phosphorus pentafluoride gas inlet, a lithium hexafluorophosphate content measuring device A, a radar liquid level meter, an online thermometer B and a gas outlet; the top of the refining kettle is provided with a synthesis liquid feeding hole, a solvent feeding hole and a lithium hexafluorophosphate content measuring device B; the preparation kettle is connected with the synthesis kettle through an on-line liquid flow meter B, and the synthesis kettle is connected with the refining kettle through a filtering device, a material transfer pump and an on-line liquid flow meter C; the phosphorus pentafluoride gas inlet is connected with a phosphorus pentafluoride gas inlet pipeline through an on-line gas flowmeter, the phosphorus pentafluoride gas inlet extends into the bottom of the synthesis kettle, and a gas distributor is arranged at the tail end of the phosphorus pentafluoride gas inlet; the utility model has the advantages of high production efficiency, good product quality and low product storage and transportation risk.

The invention discloses a functionalized lithium ion trapping agent and a preparation method thereof, and relates to the field of liquid lithium resource recycling. The preparation method comprises the following steps: co-heating an aluminum source reagent, a lithium source reagent and water to form a lithium-aluminum intercalation compound, then sequentially adding a carrier and alkali liquor for reaction to prepare a supported lithium ion trapping agent precursor, and then performing gradient water elution to obtain the supported lithium ion trapping agent. The supported lithium ion trapping agent prepared by the invention has dual functions of lithium ion trapping and froth flotation, and can realize trapping, enrichment and separation of lithium ions in oil and gas field produced water.