135 results about "Energy materials" patented technology

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 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.

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.

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 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 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.

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.

The application provides a positive electrode lithium supplementing agent, which comprises a core and a coating layer. The core comprises a lithium-rich metal oxide; the coating layer is coated on the surface of the core, and the coating layer comprises a conductive polymer and a low-surface-energy material; the surface energy of the low-surface-energy material is 10 mJ / m 2 ~ 35 mJ / m 2 , and is optionally 10 mJ / m 2 ~ 22 mJ / m 2 .

The invention belongs to the technical field of energy materials, provides a near-room-temperature n-type multi-metal co-doped PbTe-based thermoelectric material and a preparation method thereof, and is used for solving the problem that the thermoelectric performance of a near-room-temperature region of an existing PbTe-based thermoelectric material is limited. The invention provides a multi-metal co-doping collaborative optimization strategy based on Ni, Sn and Cu for intrinsic PbTe to obtain the near-room-temperature n-type multi-metal co-doped PbTe-based thermoelectric material: PbTe + x% Ni + y% Sn + z% Cu, 1 < = x < = 1.4, 0.3 < = y < = 0.7, and 0.3 < = z < = 0.5, on one hand, the conductivity is increased while a relatively large Seebeck coefficient is maintained, the room temperature ZT reaches 0.65, and the average ZT in a near-room-temperature region (300-473 K) reaches 0.85; on the other hand, the lattice thermal conductivity is remarkably reduced while a high power factor is maintained, decoupling regulation and control of electroacoustic transport parameters are achieved, and particularly, the thermoelectric performance is remarkably enhanced in a medium and low temperature region; in addition, the invention also has the advantages of simple preparation process, short period, wide sintering molding conditions and the like.

The application discloses an energetic material processing parameter optimization method and system based on a force-heat coupling model, and relates to the technical field of intelligent simulation optimization based on specific calculation models. In view of the problems that 3D printing and mechanical processing data are disconnected, and common force-heat coupling models are not suitable for energetic materials in the prior art, the method of the application first collects 3D printing operation and initial state data of the grain, then constructs a force-heat two-way coupling intelligent calculation model special for energetic materials, adopts a Bayesian algorithm to multi-objective optimize processing parameters based on the model, and carries out model-driven closed-loop dynamic processing control. The method of the application realizes full data connection and adaptation to material characteristics, takes into account safety, precision and efficiency, and improves the processing stability and consistency of the energetic material.

The application discloses a kind of water-based zinc ion battery metal zinc negative electrode interface modification method, to solve the technical problem that too much zinc dendrite is generated on the surface of water-based zinc ion battery electrode, side reaction occurs, belongs to the technical field of energy materials.The modification method includes the following steps: zinc foil is poured into phosphoric acid solution and etched surface;Glucose and PVP are configured into aqueous solution, adjust PH, obtain solution A;AgNO3 is configured into aqueous solution, obtain solution B;Solution B is slowly dropped into solution A, black suspension is obtained, PVP and PAM are added as binder, and gelled coating material is obtained after stirring;Gelled coating material is coated on the etched zinc foil, and water-based zinc ion battery metal zinc negative electrode is obtained after drying.After modification, zinc foil can accelerate the diffusion kinetics of Zn 2+ , ensure the uniform nucleation and efficient deposition of Zn 2+ , inhibit H2 release, reduce polarization and hydrogen evolution corrosion, improve the conductivity of pole piece, and improve the cycle performance and stability of battery.

The invention belongs to the technical field of nuclear energy materials and surface engineering, and particularly relates to application of an MAX phase coating in a lead bismuth environment. The MAX phase coating is deposited on the surface of the structural material, so that the corrosion resistance and wear resistance of the steam generator can be remarkably improved. The result shows that under the conditions that the temperature is 450 DEG C, the normal load is 50N, the displacement amplitude is 75 microns, the vibration frequency is 25Hz and the cycle index is 106, a stable aluminum oxide oxidation layer and a compacted abrasive dust layer can be formed, so that the Ni element is effectively prevented from being dissolved, and the corrosion rate of a structural material is reduced; meanwhile, the abrasion depth of the structural material is reduced by 70% compared with that before protection, the structure is stable, the binding force is high, and the structural material is still kept complete and has no obvious peeling or failure phenomenon even in a long-cycle test.

This utility model relates to the field of new energy material preparation technology and discloses a novel lithium iron phosphate anode composite material production device, including a base plate; a support frame is provided on the top of the base plate, a storage tank is provided inside the support frame, multiple discharge hoppers are provided at the bottom of the storage tank, and multiple telescopic motors are provided on one side inside the support frame. This novel lithium iron phosphate anode composite material production device, through the setting of a quick-release mechanism, realizes the rapid disassembly and assembly between the partition and the storage tank, facilitating the cleaning of the inside of the storage tank and avoiding the residue of sticky materials or granular powder in the narrow gaps at the connection between the partition and the tank wall, thus improving cleaning efficiency. Simultaneously, by setting a sealing component, the bottom of the mixing tank is sealed, preventing material leakage and ensuring the cleanliness of the production environment. Furthermore, the structure is simple, the design is reasonable, and it is highly practical and easy to promote and use.

The invention discloses a titanium-based high-entropy amorphous / oxide multilayer film with the characteristics of radiation resistance and low hydrogen retention as well as a preparation method and application of the titanium-based high-entropy amorphous / oxide multilayer film, and belongs to the technical field of nuclear energy materials. The titanium-based high-entropy amorphous / oxide multilayer film with the anti-irradiation and low-hydrogen retention characteristics sequentially comprises a first Al2O3 layer, a TiVZrNbTaMoB alloy layer and a second Al2O3 layer from bottom to top, and the TiVZrNbTaMoB alloy layer comprises, by atomic percent, 45%-50% of Ti, 20%-25% of V, 8%-12% of Zr, 12%-16% of Nb, 1%-3% of Ta, 0.3%-0.6% of Mo and 0.1%-0.3% of B. Through the high-entropy amorphous alloy-ceramic composite structure design and precise process control, collaborative optimization of the anti-irradiation performance and the low-hydrogen retention performance of the material is achieved, and the nuclear energy extreme environment service requirement is met.

The invention discloses a solid-solid phase change diaphragm material with in-situ thermal management and high-temperature conductivity enhancement functions and a preparation method of the solid-solid phase change diaphragm material, and belongs to the technical field of new energy materials and devices. A polyurethane solid-solid phase change material is used as a functional matrix, polyacrylonitrile is used as a spinning aid, the polyurethane solid-solid phase change material and the polyacrylonitrile are fully mixed in a solvent to form a spinning solution, and then the solid-solid phase change diaphragm material is obtained through electrostatic spinning. The diaphragm material not only can effectively maintain the structural integrity at high temperature, but also can greatly improve the lithium ion conductivity after high-temperature phase change. The diaphragm material also has excellent electrolyte wettability, greatly improves the safety and energy density of a battery system as a battery diaphragm, and has the advantages of simple preparation process, strong controllability, no need of expensive complex equipment, and good large-scale production potential.

The invention discloses a high-activity large-size water electrolysis hydrogen evolution electrode, and relates to the technical field of clean energy materials, the electrode comprises a foamed nickel substrate and a nickel oxide micro-nano structure layer generated in situ on the skeleton surface of the foamed nickel substrate through pulse laser ablation; according to the high-activity large-size water electrolysis hydrogen evolution electrode, the nickel oxide micro-nano structure layer is generated on the skeleton surface of the foamed nickel substrate in situ through ablation of the pulse laser, so that the nickel oxide micro-nano structure layer is firmly connected with the foamed nickel substrate, and the electron conduction efficiency and the structural stability can be improved; the stability of the electrochemical activity is further improved; meanwhile, the nickel oxide micro-nano structure layer shows high hydrogen evolution catalytic activity, low overpotential, high electrochemical activity and excellent long-term stability in alkaline electrolyte.

The invention discloses a manganese-aluminum layered double hydroxide asymmetric supercapacitor and a preparation method thereof, and belongs to the field of new energy material preparation, and the method comprises the steps: taking foamed nickel as a carrier, and preparing a positive electrode material MnAl-LDH of a manganese-aluminum hydroxide two-dimensional layered nanosheet structure through a one-step hydrothermal method; the structure of the material provides an electron transmission channel, increases active sites and improves conductivity. And the specific surface area of the electrode material is greatly increased. The asymmetric supercapacitor MnAl-LDH-coated NC / / AC is formed by assembling the MnAl-LDH-coated NC / AC and the activated carbon, so that the problem of low energy density of a supercapacitor in the prior art is solved. Compared with other non-equivalent supercapacitor electrode materials, the electrode material has higher energy density and power density, and meanwhile, the electrode material prepared by the invention is high in activity, stable in structure and high in cycle efficiency, and is an electrode with high area specific capacitance and high catalytic efficiency. The preparation method has the advantages of simplicity, environmental friendliness, low cost, high efficiency and the like.

The invention discloses an n-type lead selenide-based thermoelectric material and a preparation method and application thereof, and belongs to the technical field of energy material preparation. The chemical formula of the n-type lead selenide-based thermoelectric material is Pb < 1-x > CrxSe < 0.998 > Cl < 0.002 > (x is more than or equal to 0.002 and less than or equal to 0.006); according to the material, high-purity raw materials are mixed according to the molar ratio in the chemical formula, and the target lead selenide-based thermoelectric material is prepared by combining a high-temperature smelting method with a discharge plasma sintering method. Through double doping of Cr and Cl elements, the conductivity of the n-type lead selenide-based thermoelectric material is greatly improved and the thermal conductivity of the n-type lead selenide-based thermoelectric material is reduced through the synergistic effect of the Cr and Cl elements, the prepared Pb0. 996Cr0. 04Se0. 998Cl0. 002 material has a high thermoelectric figure of merit at the high temperature of 723 K, and the average thermoelectric figure of merit at the medium and low temperature of 300-673 K reaches 1.037. The thermoelectric figure of merit of the n-type lead selenide-based thermoelectric material can be greatly improved, the conversion efficiency of a thermoelectric power generation device can be improved, and the industrial application of the thermoelectric power generation device can be expanded.

The application discloses a zinc metal organic framework material and a preparation method and application thereof, and relates to the technical field of energy materials.The application provides a preparation method of a zinc metal organic framework material, wherein a soluble zinc salt is used as a zinc source, dimethyl imidazole and pentaamino tetrazole are used as ligands, and a liquid phase reaction is performed to obtain the zinc metal organic framework material.A coating material based on the zinc metal organic framework material can protect a zinc negative electrode of a zinc ion battery, and can reduce irreversible consumption of the zinc negative electrode and electrolyte during battery cycle, thereby significantly delaying battery performance degradation.

The invention provides an energy material supply allocation optimization method and system based on machine learning, and relates to the technical field of material management.The method comprises the steps that purchase order data, supplier performance data, inventory state data and demand order data are obtained, the purchase order data and the supplier performance data are integrated, and the purchase order data and the supplier performance data are integrated; forming a comprehensive state set; processing the comprehensive state set to generate multi-dimensional feature information, and inputting the multi-dimensional feature information into a multi-channel convolutional neural network for cross-modal feature fusion to obtain a rating vector; and combining the rating vector with inventory state data and demand order data to construct a supply and demand associated feature set, inputting the supply and demand associated feature set into a graph neural network, updating node feature representation through multiple rounds of inter-node message transmission, and finally generating an allocation path planning and material distribution strategy based on the updated node feature representation. According to the invention, the accuracy and overall efficiency of energy material scheduling are improved.

The invention belongs to the technical field of electrochemical energy materials, and relates to a biochar electrode and a preparation method and application thereof, and the biochar electrode comprises the following raw materials by weight: 2-6 parts of hydrothermal biochar; 1-3 parts of conductive carbon black; 1-3 parts of polytetrafluoroethylene; the hydrothermal biochar is prepared from wheat straw, rice straw or corn straw through a hydrothermal reaction. The biochar electrode disclosed by the invention is extremely low in cost, green and sustainable; the electrocatalytic activity is high, and the performance is close to that of a commercial activated carbon catalyst; the stability is excellent, and the condition that the voltage is remarkably increased only after 85 hours of working at the constant current of 100mAcm <-2 > occurs; and the preparation process is simple, large-scale production can be realized, and the method has extremely high commercial application prospects.

The invention relates to the technical field of nuclear energy materials and ceramic connection, and particularly discloses a glass welding method for nuclear silicon carbide ceramic. The glass welding method for the nuclear silicon carbide ceramic comprises the following steps: performing pretreatment and pre-oxidation treatment on the SiC ceramic to form a pre-oxidized silicon dioxide layer on a to-be-welded surface; the treated LYAS glass brazing filler metal is placed between the pre-oxidized silicon dioxide layers of the to-be-welded face, and a to-be-welded piece is obtained; and calcining the to-be-welded part, and then quickly cooling to obtain the brazed joint on which the nano split-phase glass is uniformly distributed. A uniform and stable nano split-phase glass structure is constructed by utilizing a modification effect of lithium oxide on a glass network, a silicon dioxide layer prepared by a pre-oxidation process and a rapid cooling process, so that reinforcement and toughening collaborative optimization of a brazed joint is realized; the technical problems that in an existing glass brazing technology, irradiation amorphization is likely to happen to a micro-crystallized weld joint, and the mechanical property and the service reliability of a brazed joint are insufficient are solved.

The invention discloses a vibrating diaphragm, a vibration sensor and electronic equipment. The vibrating diaphragm comprises a diaphragm; the dendritic layer is arranged on the membrane, the dendritic layer is of a nanoscale dendritic structure, and the dendritic layer protrudes out of the membrane on the surface of the membrane so as to form a plurality of dendritic structures on the surface of the membrane; and the hydrophobic layer is arranged on the dendritic layer. According to the vibrating diaphragm, the nano-scale dendritic structure is arranged on the surface of the diaphragm to serve as the dendritic layer, the nano-scale dendritic structure and the low-surface-energy material are utilized to intercept air and support liquid drops, so that the requirement for hydrophobicity of a fluorine-containing compound is lowered, a weak-fluorine or fluorine-free hydrophobic layer can be used, the fluorine-containing requirement for the hydrophobic layer is lowered, and the diaphragm has the advantages of being simple in structure, low in cost and the like. The pollution to the environment is reduced.

The application discloses a BiVO4 / CoO x / VO2 / FeOOH photoanode composite material preparation method and artificial leaf device application, and belongs to the technical field of new energy materials. x By introducing CoO x and VO2 as a synergistic hole storage layer, the photoanode can realize effective storage and regulation of photo-generated holes in different potential intervals, thereby promoting the spatial separation of photo-generated carriers, inhibiting electron-hole recombination, and significantly improving the photocurrent density of the photoanode. x In addition, FeOOH is further introduced as an oxygen evolution assistant catalyst to improve the water oxidation reaction kinetics, and a BiVO4 / CoO x / VO2 / FeOOH composite photoanode is constructed. By integrating with a silicon photovoltaic cell, an artificial leaf device is formed, which exhibits excellent photoelectrocatalytic activity and long-term operation stability in the process of photoelectrochemical water splitting.