230 results about "Energy materials" patented technology

The invention provides a precast beam field production process carbon emission calculation method, and relates to the technical field of carbon emission calculation, and the method comprises the steps: combing construction production carbon emission sources, and determining a carbon emission quantification accepting and rejecting criterion based on the complexity, importance and contribution degree of the carbon emission sources; determining a time boundary, a space boundary and an emission source boundary; constructing a prefabricated beam field construction production carbon emission chemical index system comprising a first-level index, a second-level index and a third-level index; analyzing internal characteristics and adaptive scenes of existing energy and material carbon emission factors, correcting and optimizing carbon emission factors of fossil energy, electric power and outsourcing materials by combining an energy structure, regional electric power characteristics and precast beam field building material use characteristics, and establishing an emission factor library; calculating the total carbon emission in the production process of the precast beam field by adopting an emission factor method; the total carbon emission is corrected; the data quality can be improved, and the calculation accuracy is guaranteed; accounting benchmarks are unified, and the problem of result difference is solved.

The invention discloses a method for preparing a hard carbon negative electrode material, the hard carbon negative electrode material and a sodium-ion battery, belongs to the technical field of energy materials, and solves the problems that the existing hard carbon negative electrode material is complex in microstructure and indefinite in sodium storage mechanism, and the traditional preparation method cannot effectively increase the internal closed pore volume, so that the high-platform capacity development is limited, and the sodium-ion battery is difficult to use. And the improvement of the energy density of the sodium-ion battery is restricted. Comprising the following steps: drying and crushing coconut shells; pre-carbonizing the treated coconut shell to obtain a carbonized material; uniformly mixing the carbonized material with an activating agent to obtain a mixed material; carrying out an activation reaction to obtain a biomass-based porous carbon mixed material; washing until the solution is neutral; carrying out activation reaction on the washed material to obtain the biomass-based porous carbon material with high specific surface area and high microporosity; and carrying out variable-temperature chemical vapor deposition reaction to obtain the hard carbon negative electrode material. The method is suitable for a large-scale preparation scene of the hard carbon negative electrode material with abundant closed pores.

The invention discloses a high-porosity organic salt framework confinement nano-metal hydrogen storage material and a preparation method thereof, and belongs to the field of new energy materials. The material takes a carboxylic acid organic salt framework (POS-1) as a carrier, the specific surface area of the material is 1520 m < 2 > / g, the pore size distribution is 1.8-2.5 nm, nano Mg / Ni particles (the average particle size is 3.2 + / -0.5 nm) are confined in pores through a gradient loading and in-situ reduction technology, and an atomic layer deposition (ALD) is adopted to modify a Pd nano catalyst (the loading capacity is 0.48 wt%). The reversible hydrogen storage capacity of the material at room temperature reaches 5.8 wt%, the hydrogen desorption temperature is lower than 80 DEG C, and the capacity retention ratio is larger than or equal to 92% after 100 times of circulation. The preparation method comprises the steps of organic salt framework synthesis, metal precursor gradient loading, low-temperature reduction (250 DEG C), hydrogenation activation and the like, the process is simple and controllable, and the catalyst is suitable for scenes such as a vehicle-mounted hydrogen storage system.

The invention belongs to the technical field of energy materials, and provides a multi-functional-layer lithium manganate positive electrode material and a preparation method thereof and a lithium battery, the multi-functional-layer lithium manganate positive electrode material comprises a core body and a coating layer, the core body sequentially comprises a bulk-phase-doped lithium manganate matrix, an induction doping layer and a modification doping layer from inside to outside, the chemical general formula of the core body is Li < 1 + a > Mn < 2-b-c-d > M R < c > X < d > O < 4-e > Z < e >, bulk phase doping elements of the matrix are M and Z, a crystal face induction element is X, and a modification doping element is R; the coating layer is a compound comprising a coating element M '; a supported crystal face inducer is also adopted for further inhibiting the growth of the crystal face (111) and reducing the area of the crystal face (111) so as to form the positive electrode material of a polyhedral spinel crystal structure comprising at least 26 crystal faces, and the crystal face inducer comprises a phosphorus-containing compound, a boron-containing compound or at least + 5 valence metal salt; the Mn dissolution reaction is reduced, and the electrochemical performance of the lithium manganate is improved.

The invention discloses a high-entropy P2-O3 composite system sodium ion positive electrode material, a preparation method thereof and a sodium battery, and belongs to a new energy material technology. The method comprises the steps that a first reactant, metal oxide and solid powder of a sodium source are blended, sintered and cooled, the component of the first reactant is NiyFezMn (1-3y-z) (OH) (2-4y), and the particle size of the first reactant is 1-20 micrometers; the metal oxide is any two of TiO2, MgO, Co3O4, SnO2, ZrO2, La2O3 and CeO2, and the particle size D50 of the metal oxide is less than or equal to 5 microns; the sodium source is selected from any one of sodium carbonate, sodium bicarbonate, sodium nitrate and sodium acetate, and the particle size D50 is less than or equal to 10 microns; the particle size of the first reactant is larger than the particle size D50 of the metal oxide, and the particle size D50 of the sodium source is larger than the particle size D50 of the metal oxide.

The invention provides a surface treatment agent, a surface treatment method of a copper foil and a copper foil negative electrode current collector, and belongs to the technical field of energy materials. The copper salt is used as a copper source, the N-alkyl pyridine halogen salt ionic liquid is used as a halogen source, the copper salt and the N-alkyl pyridine halogen salt ionic liquid react in the solution to form cuprous halide particles on the surface of the copper foil in situ, the specific surface area and the roughness of the surface of the copper foil negative electrode current collector are increased, the copper foil negative electrode current collector is firmly combined with an active substance, and therefore the specific capacity and the rate of the lithium ion battery are improved; cu < + > in the cuprous halide particles formed on the surface of the copper foil also participates in electrochemical reaction, so that the specific capacity of the lithium ion battery is further improved. The result of the embodiment shows that the capacity of the lithium ion battery prepared from the copper foil negative current collector obtained by carrying out surface treatment on the copper foil by the surface treating agent provided by the invention can reach 825mAh g <-1 >; 100 times of charge-discharge cycles are carried out under the large current density of 1Ag <-1 >, and the retention rate can reach 95%.

The invention discloses a thermochemical energy storage composite material with a bionic ordered structure and a preparation method of the thermochemical energy storage composite material, and relates to the crossing field of new energy materials and thermochemical energy storage technologies. Through an optimization strategy of coordination of geometrical shape, internal channel and surface effect, efficient adsorption / desorption kinetics and solar energy direct drive heat storage are realized. The thermochemical energy storage composite material comprises a matrix with a bionic multi-scale mass transfer structure and hygroscopic inorganic salt uniformly loaded in the matrix, wherein the matrix is activated by KOH and then is loaded with the hygroscopic inorganic salt; the appearance of the base body imitates that of red blood cells, and the base body is in a single concave disc shape; and a vein-like layered directional vein network is arranged in the base body. The problems of moisture absorption and caking, slow mass transfer and low photothermal conversion efficiency of a traditional hydrated salt material are solved, and a new scheme is provided for efficient storage of renewable energy sources.

The invention discloses a method for in-situ lossless repair of an attenuated lithium manganate positive electrode material, which specifically comprises the following steps: adding the attenuated lithium manganate material into a lithium hydroxide solution, supplementing lithium to an original value by a hydrothermal method, repairing the component and structure defects of attenuated LiMn2O4 by combining high-temperature roasting, and recycling and regenerating lithium manganate particles with severely attenuated capacity. The lithium manganate positive electrode material is directly recovered by the lossless method, and the chemical components and crystallinity of the invalid positive electrode material in various health states are reconstructed, so that the invalid positive electrode material can be repeatedly used in the lithium ion battery. Finally, the treated recycled powder material is coated by a metal organic framework (MOFs) self-assembly method, so that the electrochemical performance of the treated powder material is further improved. The method is simple, environmentally friendly and low in energy consumption, has obvious advantages compared with a traditional hydrometallurgy battery recovery method, and lays an important foundation for sustainable manufacturing of energy materials.

The invention provides a silicate nanotube photo-thermal composite catalyst with CeO2-ZrO2 compositely coated with Ni as well as a preparation method and application of the silicate nanotube photo-thermal composite catalyst, and belongs to the technical field of energy materials. The catalyst takes a layered silicate nanotube as a carrier, is loaded with an active component Ni, and is coated with a CeO2-ZrO2 composite shell layer. The preparation method comprises the steps that firstly, a Ni-PSNTs precursor is synthesized through microwave hydrothermal synthesis, then Ce-Zr hydroxide is deposited in an ethanol solvent, ZrO2 / CeO2 layers are stacked alternately through an atomic layer deposition method, H2 / N2 pulse reduction is conducted after calcination, and the target catalyst is obtained. The methane conversion efficiency and stability are obviously improved. The problems that a traditional catalyst is low in activity, poor in carbon deposition resistance and low in photo-thermal efficiency are solved, and the catalyst is suitable for the fields of efficient conversion of fossil energy and the like.

The invention discloses a three-dimensional porous hard carbon coated silicate positive electrode material and a preparation method thereof, belongs to the field of novel energy materials, and relates to a three-dimensional porous hard carbon coated silicate positive electrode material and a preparation method thereof. The preparation method comprises the following steps: taking carbon nanotubes and chitosan as a carbon skeleton, mixing in an acidic solution, adding ethyl orthosilicate into ethanol, adding corresponding metal ion salts, dissolving and mixing, carrying out two-stage calcination at a certain temperature to obtain a three-dimensional porous hard carbon coated silicate positive electrode material, pulping the obtained material, coating a foil material with the pulped material, and drying to obtain the three-dimensional porous hard carbon coated silicate positive electrode material. And finally assembling to obtain the battery. The prepared silicate positive electrode material has good conductivity and discharge stability.

The invention relates to the technical field of energy materials and fluid engineering, and provides a micro-nano particle morphology detection and slurrying performance prediction method, device and equipment, and the method comprises the steps: preprocessing a slurry fuel sample, collecting the micro-morphology image and particle size distribution data of particles in the slurry fuel sample, and forming an original data set; based on a regional convolutional neural network algorithm, carrying out segmentation and feature extraction on the micromorphological image in the original data set to identify particle morphological parameters in the micromorphological image; establishing a dynamic database containing particle morphology parameters and particle size distribution data; based on the data of the dynamic database, a grey correlation method is adopted to quantify the correlation degree between the particle morphology parameters and the corresponding pulping performance indexes, and linear fitting is carried out; and constructing a pulping performance prediction model to obtain a pulping performance prediction value. The method can be directly applied to quality control and process optimization in slurry fuel production, and assists in improving the production efficiency and the product quality consistency.

The application discloses a kind of porous carbon silicon negative electrode materials and preparation method thereof, belong to new energy material technical field, including porous carbon framework, silicon layer and carbon layer;The porous carbon framework includes macroporous carbon framework and the small pore carbon framework nested in macroporous carbon framework inside;The silicon layer is located at the surface of macroporous carbon framework and in small pore carbon framework;The carbon layer is coated on the surface of macroporous carbon framework silicon layer and in the silicon layer located in small pore carbon framework.This application shows a kind of porous carbon silicon negative electrode material, and the lithium ion battery can be prepared using the negative electrode material, and the lithium ion battery prepared has high first efficiency, low expansion and long cycle and the like advantages.

The present invention relates to the technical field of electrochemical energy materials, and specifically discloses a molybdenum nitride / nickel cobalt nitride nanosheet heterostructure electrocatalytic material, its preparation method and application. The method comprises S1, preparing copper hydroxide nanowires loaded on copper foam; S2, preparing copper nanowires loaded on copper foam; S3, preparing copper nanowire-loaded molybdenum-doped nickel cobalt nanosheets; S4, placing the copper nanowire-loaded molybdenum-doped nickel cobalt nanosheets in a tube furnace, and nitriding them in an ammonia nitrogen atmosphere to obtain a molybdenum nitride / nickel cobalt nitride nanosheet heterostructure electrocatalytic material. The internal resistance of the material is reduced by electron transfer and heterostructure between molybdenum nitride and nickel cobalt nitride, and compared with precious metal platinum wire, the material has excellent high current density hydrogen evolution performance. The preparation method provided by the present invention has the advantages of simple synthesis process, short synthesis cycle and low production cost. In addition, no hydrothermal reaction is required during preparation, the material has high safety and reliable repeatability, and is very suitable for large-scale industrial production.

The invention belongs to the technical field of preparation of new energy materials and supercapacitors, and particularly relates to a Mo-Fe co-doped MnO2 / Ag-CNTs composite electrode and a preparation method and application thereof. The method comprises the following steps: firstly, preparing an activated carbon cloth substrate, a deposition solution A and a deposition solution B; then the deposition solution A and the deposition solution B are mixed to obtain a Mo-Fe-MnO2 deposition solution, and an Ag-CNTs deposition solution is prepared; and finally, electro-deposition is alternately carried out in the Mo-Fe-MnO2 deposition solution and the Ag-CNTs deposition solution, and the Ag-CNTs / Mo-Fe-MnO2 / Ag-CNTs composite material is obtained. The preparation process provided by the invention is simple and controllable, and the large-scale preparation of the high-performance composite electrode is easy. The electrode is unique in structure and excellent in performance, and a flexible solid-state PSCSC device assembled by the electrode has high energy storage density and efficient mechanical energy self-charging capacity and shows huge application potential in the field of self-powered wearable / implantable microelectronics.

The invention relates to the crossing field of intelligent manufacturing of new energy materials and the Internet of Things technology, discloses an intelligent drying method and system for a power battery diaphragm material based on Internet of Things monitoring, and aims to solve the problems of non-uniform quality, high energy consumption and low yield caused by the fact that an existing drying process is static in control and cannot sense the state of a material body in real time. Obtaining multi-dimensional state data such as residual solvent concentration, temperature field, porosity and tension deformation of the diaphragm material through a multi-mode in-situ sensing module; predicting future state evolution by using a digital twinborn model fusing Kalman filtering and a physical information neural network; an optimization problem including quality, energy consumption and stability targets is solved through a multi-region model prediction control module, and an optimal control instruction is generated; and finally, the distributed driving execution module dynamically adjusts the heating power, the hot air rate and the conveying speed of each temperature zone, and closed-loop self-adaptive drying is achieved.

The invention discloses an ABX3 type perovskite material stabilized by a liquid crystal material and a preparation method of the ABX3 type perovskite material, and belongs to the field of semiconductor photoelectric materials and energy materials. The preparation method comprises the following steps: (1) uniformly mixing lead iodide and dodecyl dimethyl benzyl ammonium bromide, and carrying out heat treatment reaction to obtain a liquid crystal material solid; (2) dissolving the obtained liquid crystal material solid in an organic solvent to obtain a precursor solution; and (3) coating the surface of the ABX3 type perovskite thin film with the obtained precursor solution to obtain the ABX3 type perovskite material stabilized by the liquid crystal material. The ABX3 type perovskite which is high in quality and ultrahigh in stability is prepared through the method, the stability and the photoelectric property of the perovskite material are improved in order of magnitude, and the ABX3 type perovskite can be widely applied to the photoelectric fields of batteries, light emitting, detectors and the like; the preparation method has the characteristics of simplicity, easiness in control, convenience in operation, lower cost and the like, and is convenient for large-scale production in factories.

According to the bag-pulling centrifugal machine for the energetic materials, the drum is rotationally installed in the barrel body, the through hole is formed in the drum, the feeding pipe is installed at the top of the barrel body, and particularly, the discharging opening of the feeding pipe faces the inner wall of the drum, so that the energetic materials are not prone to falling off in the input process of the energetic materials due to the structural design. Materials are directly sprayed out from the pipe opening of the feeding pipe to impact the inner side of the pull bag, after spin-drying, cleaning and re-spin-drying, the materials penetrate through the opening from the gap between the supports to be discharged out of the rotary drum, due to the fact that the diameter of the feeding pipe is not changed, energetic materials in the feeding pipe cannot be extruded in the feeding process, the explosion risk is reduced, and the production efficiency is improved. The problem that in the prior art, the explosion risk is too high when a bag-pulling centrifugal machine treats energetic materials is solved.

This invention relates to the field of oil and gas well development technology, and particularly to a high-energy gas fracturing ultra-high pressure simulation testing device and equipment. The high-energy gas fracturing ultra-high pressure simulation testing device includes a main body, a fracturing test module, and a detection and control module. The main body includes a wellbore, a buffer cylinder horizontally placed at the bottom of the wellbore, and a short connecting cylinder welded to the middle of the buffer cylinder, with the wellbore and the short connecting cylinder fixedly connected. A flange blind plate is installed at the top of the wellbore. The fracturing test module includes a rupture disc and a fracturing gun. The rupture disc is disposed between the wellbore and the short connecting cylinder. The fracturing gun is disposed inside the wellbore. The detection and control module includes an igniter, a pressure sensor, and a control center. The igniter is disposed inside the fracturing gun, which is filled with high-energy material. The high-energy gas fracturing ultra-high pressure simulation testing device provided by this invention effectively improves the reliability of test data, reduces the risk of experiments, and lowers the reconstruction cost of equipment.

The invention belongs to the technical field of energy materials, and discloses a preparation method of a zinc-based porous organic polymer coating and application of the zinc-based porous organic polymer coating to protection of a zinc negative electrode. Reaction raw materials of the zinc-based porous organic polymer provided by the invention are cheap soluble zinc salt and pyromellitic acid, and the zinc-based porous organic polymer is obtained through a one-step solvothermal reaction. Polyvinylidene fluoride (PVDF) is adopted as a binder, and Zn-POPs is loaded on the surface of the zinc negative electrode in the modes of spin coating, blade coating, spray coating and the like. According to the Zn-POPs protective coating provided by the invention, the concentration distribution of zinc ions on an interface can be dynamically regulated and controlled by an unsaturated coordinate bond, and a dendrite-free zinc negative electrode is realized. Meanwhile, the coating can isolate direct contact between the electrolyte and the negative electrode, so that corrosion of the zinc negative electrode and generation of byproducts are reduced; when the coating is applied to a symmetric battery and a total battery, the battery can show low polarization voltage and stable cycle performance, the advantages of the coating are further highlighted, and subsequent large-scale industrial production can be expected.

The application discloses an in-situ testing method for an electron transmission mechanism of an oxygen vacancy modified SrTiO3@Ag nanotube photocatalyst, and belongs to the technical field of energy materials. The method steps are as follows: first, SrTiO3 nanotubes are prepared by an in-situ electrospinning method; a SrTiO3@Ag nanotube is prepared by using a photoreduction method to anchor Ag nanoparticles near oxygen vacancies to construct a Schottky heterojunction. The electron absorption characteristics of the oxygen vacancies and the Ag nanoparticles provide a driving force for the transfer of photo-generated electrons, and the synergistic effect of the oxygen vacancies and the Ag nanoparticles greatly promotes the separation of photo-generated carriers. Subsequently, the migration direction of the photo-generated carriers in the system is characterized by in-situ irradiation XPS technology. By using the in-situ testing method, it is proved that the oxygen vacancies can serve as a "bridge" to transfer the photo-generated electrons activated by the SrTiO3 nanotubes to the active site Ag nanoparticles for a photocatalytic reduction reaction, and the electron transmission mechanism under the catalytic reaction condition is revealed. The method can provide a more convenient, more scientific and more actual scene conforming research mode for the research on the electron transmission mechanism of a photocatalyst with vacancies.

The invention relates to an electrified crushing method for high-energy-content substances, which comprises the following steps of: closing a discharge hole of a feeding oxygen-isolating bin, putting an electrified battery cell into the feeding oxygen-isolating bin, and closing a feed hole of the feeding oxygen-isolating bin; starting to fill low-temperature nitrogen with a preset temperature value into the feeding oxygen isolation bin, and filling low-temperature nitrogen with a preset temperature value into a crushing cavity of the crusher, so that the oxygen concentration in the feeding oxygen isolation bin and the crushing cavity is lower than a set value, opening a discharging opening of the feeding oxygen isolation bin, and enabling the charged battery cell to fall into the crushing cavity of the crusher; the crusher crushes the charged cell, low-temperature nitrogen is continuously introduced into a crushing cavity of the crusher in the crushing process, so that the temperature in the crushing cavity is lower than the flash point temperature of electrolyte in the charged cell, and the charged cell is crushed to reach the expected particle size; materials in the crushing cavity of the crusher enter the next procedure through the closed conveyor. The method has the beneficial effects that the time of a charged cell recovery pretreatment stage is saved, and the recovery efficiency of each component of the battery, the product quality and the productivity are improved.

The present application relates to advanced flexible electronic materials, energy material surface coating modification technical field, disclose a kind of for the continuous in-situ wiping coating device and process of flexible film substrate surface.The continuous in-situ wiping coating device for the flexible film substrate surface includes the unwinding roller, the guide transition roller group, primary wiping coating device, secondary wiping coating device, tertiary wiping coating device, film traction machine, winding roller arranged in sequence.The continuous in-situ wiping coating process for the flexible film substrate surface uses the continuous in-situ wiping coating device for the flexible film substrate surface described in the application.Using the continuous in-situ wiping coating device and process for the flexible film substrate surface can realize the low-cost, large-scale preparation of micron-scale coating under the condition of not relying on high-vacuum environment and harmful chemical reagent.

The invention relates to the field of photoelectric energy materials, in particular to a Cu2O p-n homojunction composite photocatalytic nitrogen fixation material, a preparation method and application, the method comprises the following steps: adding Pr (NO3) 3 and n-type I-Cu2O into a Cu2O reaction solution or adding KI and p-type Pr-Cu2O into the Cu2O reaction solution, and carrying out hydrothermal reaction to obtain the Cu2O p-n homojunction composite photocatalytic nitrogen fixation material. According to the method, a Cu2O p-n homojunction composite structure is constructed, a built-in electric field formed by p-type and n-type semiconductor interfaces is utilized, separation of photo-generated electrons and holes is accelerated, photo-generated carrier recombination is effectively inhibited, the stability and catalytic efficiency of the material are improved, and the problems of low catalytic activity and poor stability when Cu2O is used as a catalyst for synthesizing ammonia through light nitrogen fixation are solved.

The invention provides application of droplet merging induced bounce and a solid surface energy measuring system and method, and belongs to the technical field of surface science and precision measurement. Firstly, the invention provides an application of a droplet combination induced bounce phenomenon in solid surface energy measurement. Secondly, the invention provides a measuring system which comprises a liquid drop distribution unit, a merging induction unit, a high-speed image acquisition unit and a data processing and analyzing unit. Finally, a measuring method is provided, two liquid drops with similar sizes are prepared on the surface of a solid, and the liquid drops are induced to be combined and bounce; relevant parameters are extracted, and a Young's equation contact angle of the smooth surface is obtained based on an energy conservation model and a Cassie-Baxter model; and the total surface energy of the super-hydrophobic solid is obtained by simultaneously solving dispersion and polar components of the surface of the super-hydrophobic solid by using data of at least two liquids. According to the method, the surface energy is measured by using liquid drops and bounce, and the defect of low-surface-energy material measurement by a traditional contact angle method is overcome.

The invention relates to a preparation method of a polyacid modified CuMoSelectrode material, and belongs to the technical field of new energy materials and photoelectric conversion. According to the preparation method, an in-situ synthesis method is adopted, and SiW11Co is doped in a CuMoS material through a one-step solvothermal preparation technology; comprising the following steps: S1, dissolving sodium molybdate and thioacetamide in ethylene glycol, then adding SiW11Co into the solution for dissolving, finally adding Cu2O, and carrying out ultrasonic treatment on the mixed solution at room temperature for 10-15 minutes to obtain a uniform dark brown suspension; s2, continuously stirring for 5 minutes, transferring the precursor suspension into a high-pressure reaction kettle, and carrying out a solvothermal process for 22-24 hours; s3, the reaction kettle is cooled to the room temperature, a final product is centrifugally washed three times with deionized water and absolute ethyl alcohol respectively, then vacuum drying is conducted, and the SiW11Co / Cu2MoS4 composite material is obtained. By introducing a proper amount of SiW11Co, a rough structure is formed on the surface of CuMoS, the number of active sites is increased, the specific surface area is increased, and the catalytic performance and the stability are far better than those of a traditional CuS counter electrode and an unmodified CuMoS counter electrode.

This application relates to a method for preparing multi-acid modified Cu₂MoS₄ electrode materials, belonging to the field of new energy materials and photoelectric conversion technology. An in-situ synthesis method is employed, using a one-step solvothermal preparation technique to dope Cu₂MoS₄ materials with SiW. 11 Co; includes the following steps: S1. Dissolve sodium molybdate and thioacetamide in ethylene glycol, and then add SiW to the solution. 11 Co is dissolved, and finally Cu2O is added. The above mixed solution is ultrasonically treated at room temperature for 10-15 min to obtain a uniform dark brown suspension. S2. After stirring for another 5 min, the precursor suspension is transferred to a high-pressure reactor for a solvothermal process of 22-24 h. S3. The reactor is cooled to room temperature, and the final product is washed three times each with deionized water and anhydrous ethanol by centrifugation, and then vacuum dried to obtain SiW. 11 Co / Cu2MoS4 composite material. This invention utilizes an appropriate amount of SiW... 11 The introduction of Co creates a rough structure on the surface of Cu₂MoS₄, increasing the number of active sites and the specific surface area. This results in catalytic performance and stability that are far superior to those of traditional Cu₂S counter electrodes and unmodified Cu₂MoS₄ counter electrodes.

The present application relates to a kind of adjustable thrust and specific impulse of multi-working substance mixed effect laser plasma micro-propeller, solid working substance supply system includes multiple solid working substance, wherein one solid working substance is located in the middle, the rest is uniformly arranged in the periphery of the solid working substance in the middle along the circumferential direction, each solid working substance is fixed on the installation base by fixed assembly B, the material of each solid working substance is two or more than two in metal, high molecular polymer, energy material;Laser system includes control power supply and multiple laser assembly, the number of laser assembly is same with the number of solid working substance, one-to-one correspondence, wherein one laser assembly is located in the middle, the rest is uniformly arranged in the periphery of the laser assembly in the middle along the circumferential direction.The present application can make the thrust and specific impulse generated by propeller can be adjusted in a large range by adjusting the independent action of laser and single solid working substance or the coupling effect of laser and multiple types of solid working substance, satisfy more complex space task.

A sagger-leveling demagnetization device, belonging to the field of lithium iron phosphate new energy material processing and magnetic material selection technology, includes a frame. One end of the frame has a pushing mechanism, and a vibrating part is movably mounted on the frame. The other end of the frame has a vibration mechanism. The pushing mechanism is connected to the vibrating part to move it to the vibration mechanism, which in turn drives the vibrating part to move up and down and vibrate horizontally. This invention features a sealing cover on the sagger to prevent dust generation during leveling. During leveling, the side top bars, first end posts, and second end posts constrain the outer periphery of the sagger, while rollers and the sealing cover constrain the vertical direction of the sagger. This design prevents the sagger from moving relative to the vibrating part during leveling, thus avoiding damage.

The invention relates to the technical field of new energy materials, in particular to a sodium ion host material, a preparation method thereof and a sodium metal battery. The material comprises a porous carbon base material, and nitrogen and phosphorus are doped in at least a surface layer region. On one hand, the rich open pore system of the porous carbon base material provides a containing space for sodium ion deposition, and the volume change is relieved; on the other hand, under the synergistic effect of the doped elements, the electronic structure and surface chemical properties of carbon atoms on the surface of the porous carbon are adjusted, the binding energy with sodium ions is improved, the sodium thinning phenomenon is improved, the nucleation overpotential of the sodium ions is reduced, then sodium dendrite growth is reduced, the polarization phenomenon is reduced, and the rate capability is improved; the surface layer area doped with the nitrogen element and the phosphorus element provides abundant active sites, sodium ions are induced to be uniformly deposited, and generation of sodium dendrites is further reduced. In conclusion, the sodium ion host material can relieve the problems of volume change, dendritic crystal growth, high nucleation overpotential and serious coulombic efficiency attenuation.

This invention discloses a method for preparing hard carbon derived from the aerial roots of banyan trees, belonging to the field of new energy materials technology. The method includes the following steps: Step 1: Freshly cut banyan aerial roots are washed, dried, crushed, and sieved; Step 2: Choline chloride (ChCl) and lactic acid (LA) are mixed in a certain proportion to prepare DES; Step 3: The DES from Step 2 is mixed with the banyan aerial root powder from Step 1 and reacted, then subjected to delignification. The delignified black liquor is washed with anhydrous ethanol and deionized water and filtered to obtain a filter cake, which is then dried in an oven; Step 4: The filter cake from Step 3 is ground into powder and calcined at a medium-low temperature to obtain pre-carbonized banyan aerial root powder; Step 5: The pre-carbonized powder from Step 4 is calcined at a medium-high temperature, acid-washed, and dried to obtain banyan aerial root-derived hard carbon. This invention discloses a green, environmentally friendly, and high-performance method for preparing derived hard carbon, applicable to battery anode materials, realizing the high-value utilization of biomass waste.