51results about How to "Increase current density" patented technology

The present application relates to power semiconductor technology, and particularly relates to a power MOSFET device and a preparation method, which comprises a drain metal, a heavily doped first-conductivity-type semiconductor substrate, a lightly doped second-conductivity-type semiconductor epitaxial layer, a first-conductivity-type semiconductor vertical sinker, a gate dielectric layer, a gate polysilicon electrode, a second-conductivity-type semiconductor body region, a first-conductivity-type semiconductor drift region, a heavily doped first-conductivity-type semiconductor source region, a heavily doped second-conductivity-type semiconductor ohmic contact region, a first insulating dielectric layer, a source metal, a trench structure, a second insulating dielectric layer, and a heavily doped first-conductivity-type polysilicon. The present application has a vertical sinker structure, can change the current path from lateral to vertical, and the transverse and longitudinal voltage resistance structure formed by the drift region and the vertical sinker effectively improves the voltage resistance characteristics of the device. In addition, the structure also has smaller gate parasitic effects and larger current capacity.

The invention discloses a preparation method of a polypropylene composite filler based on electrocatalytic oxidation coal gasification fine slag as a raw material, the preparation method comprises the steps of raw material treatment, system modification, material electrolytic oxidation and material post-treatment, the polypropylene composite filler comprises polypropylene resin and the polypropylene composite filler, based on the total weight of the composite material, the usage amount of the composite filler is 5-20wt%, and the usage amount of the composite filler is 5-20wt%. The raw materials comprise an environment-friendly functional auxiliary agent accounting for 0.5-5% of the total weight of the composite material, and the functional auxiliary agent is selected from one of a weather-proof agent, a halogen-free flame retardant and a bio-based antibacterial agent. The method has the advantages that the low-temperature plasma pretreatment and the composite modifier assisted electrocatalytic oxidation process are combined, a large number of active sites can be quickly and efficiently introduced on the surface of the coal gasification fine slag through the low-temperature plasma treatment, and the surface energy and the reaction activity of the coal gasification fine slag are remarkably enhanced.

A kind of integral blade linear friction welding joint current auxiliary local performance regulation method, steps are as follows: preparation of shaper equipment;Welding seam necking transition section is machined;Integral blade is sent into vacuum environment device;Welding seam installs electrode, electrode is connected into direct current pulse power;Cooling device is connected;Vacuum environment device, cooling device and direct current pulse power are started in turn;Temperature reaches value and keeps warm;Adjust pulse current value to carry out secondary or more local heat treatment, close direct current pulse power;Cool to normal temperature;Restore normal pressure environment, cooling device is closed, electrode is removed;Repeat operation, complete the rest of welding seam local performance regulation.The present application utilizes the joule heating effect and electrocaloric effect generated by current through metal to realize local performance regulation of welded joint, combined with necking transition section to improve current density, realize accurate regulation of microstructure and mechanical properties of welded joint, realize high-performance, high-quality manufacturing of titanium alloy linear friction welding fan integral blade.

The application discloses an enhanced water-vapor power generation device and a preparation method thereof, and belongs to the technical field of water evaporation power generation. The enhanced water-vapor power generation device comprises a substrate and reduced graphene oxide fibers loaded on the substrate, and the two ends of the substrate are connected with conductive parts; wherein the reduced graphene oxide fibers are compounded with a high-molecular conductive polymer, and the high-molecular conductive polymer is made of a poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) solution with enhanced conductive performance. The enhanced water-vapor power generation device can effectively improve the structural stability of the reduced graphene oxide material under long-term hydration, avoid or reduce the occurrence of structural expansion or peeling, and enhance the stability of the material structure. The poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) and the reduced graphene oxide form a three-dimensional continuous conductive path, reduce the interface contact impedance, accelerate the electron migration rate of the water-vapor power generation device, and thus improve the power generation performance of the device.

The utility model provides a superconducting cable skeleton and a superconducting cable, the superconducting cable skeleton comprises at least one layer of spiral skeleton, at least the outermost layer of spiral skeleton is formed by spirally twisting a strip-shaped metal plate, and at least one layer of spiral skeleton is provided with a cooling medium channel which spirally penetrates through the spiral skeleton along the spiral direction. The spiral framework can guarantee certain supporting performance, has sufficient flexibility and elasticity, and can be repeatedly bent. When the superconducting cable framework needs to be bent, the gaps on the spiral framework can provide enough bending space, and then the requirement for high flexibility is met. Meanwhile, at least one layer of spiral framework is provided with a cooling medium channel which spirally penetrates through the spiral framework in the spiral direction, and a cooling medium is introduced to provide stable cold conduction for the superconducting tape. After the superconducting tape is wound outside the superconducting cable skeleton, internal cold conduction is not affected, external cold conduction is not needed, and the compactness and the application environment applicability of the cable are improved.

The application relates to the technical field of battery materials, and discloses a sodium-philic carbon-based material, a negative-electrode-free current collector, a preparation method of the sodium-philic carbon-based material and a sodium metal battery. The preparation method of the sodium-philic carbon-based material comprises the following steps: providing a mixed solution, wherein the mixed solution comprises carbon source powder, an iron source and a solvent; fully reacting the mixed solution in a protective atmosphere at 160-240 DEG C; obtaining a carbon-loaded sodium-philic material after solid-liquid separation; fully calcining the carbon-loaded sodium-philic material in an inert atmosphere at 700-900 DEG C to obtain a porous sodium-philic precursor; and treating the porous sodium-philic precursor in a reaction gas atmosphere at 400-700 DEG C for 1-3 hours to obtain the sodium-philic carbon-based material. The reaction gas atmosphere is an ammonia gas and inert gas mixed atmosphere or an ammonia gas atmosphere. The material is coated on the surface of the negative-electrode-free sodium metal battery current collector, and can enhance the electrochemical performance of the battery.

The application discloses the technical field of electroplating wastewater treatment high-value metal recovery system for electroplating wastewater, including electrolytic cell and electrolytic mechanism, electrolytic cell is connected with infusion tube, infusion tube is connected with electronic flowmeter, electrolytic cell top is detachably connected with cover body, cover body is provided with observation ring groove, cover body is fixedly connected with camera unit; The inside lower side of the electrolytic cell is provided with a sedimentation plate and a stirring unit, the sedimentation plate is in sliding fit with the inner side wall of the electrolytic cell, the bottom of the electrolytic cell is fixedly connected with a first weighing sensor, and the detection end of the first weighing sensor is in abutment with the bottom of the sedimentation plate; The electrolytic mechanism includes a controller, a driving unit, an adjusting unit and an electrolytic unit. The application reduces the generation of concentration polarization and activation polarization phenomenon in the process of electroplating wastewater metal treatment and recovery, recovers the wastewater metal in an efficient state, estimates the treatment and recovery effect of the wastewater metal, and improves the qualified rate of wastewater metal treatment and recovery.

The invention belongs to the technical field of fuel cells, and particularly relates to a high-power closed cathode air-cooled fuel cell metal bipolar plate, an electric pile, a system and a design method.The metal bipolar plate specifically comprises an anode plate, a cooling plate and a cathode plate which are arranged in an upper-layer structure, a middle-layer structure and a lower-layer structure; a plurality of anode runners for anode fuel gas to flow are arranged in the anode plate; a plurality of cathode runners for cathode reaction air to flow are arranged in the cathode plate; a plurality of cooling straight flow channels for cooling gas to flow are formed in the cooling plate; the effects of high power density and low cathode voltage of the fuel cell are achieved by a regionalized metal bipolar plate configuration, and the problems of high parasitic power consumption and the like of an air compressor caused by low power density and large cathode voltage drop of the fuel cell under a high-power working condition in the prior art are effectively solved.

The invention discloses a polypyrrole coated bismuth core-shell nanowire with a cavity as well as a preparation method and application thereof, and relates to the technical field of CO2 electroreduction. The nanowire takes a bismuth formate oxide nanowire as an inner core, and the surface of the nanowire is coated with a polypyrrole shell layer. When the material is applied to CO2 electroreduction, the inner core is reduced into metal bismuth and generates volume shrinkage, and a cavity is formed between the core and the shell to promote substance transmission. The polypyrrole shell layer can maintain the one-dimensional morphology, restricts the reconstruction of the catalyst, and utilizes the hydrophobic and aerophilic characteristics of the polypyrrole shell layer to regulate and control the interface microenvironment and promote proton transport. Compared with an uncoated material, the catalyst has the advantages that the current density is obviously improved, the formic acid Faraday efficiency is continuously higher than 90% in a wide potential range of-0.6 to-1.1 V (vs. RHE), the efficiency is kept above 80% in a test for more than 350 hours, and the catalyst shows excellent stability and application potential.

This invention discloses a dynamically responsive electrolyte, its preparation method, and its applications. The electrolyte comprises a soluble metal salt, an active metal cation, an electric field-responsive ligand, and a self-healing additive. The molar ratio of the soluble metal salt, active metal cation, electric field-responsive ligand, and self-healing additive is 1:(0.05~6.0):(0.001~0.2):(3~100). The concentration of the soluble metal salt in the solvent is 0.2M to 5.0M. This electrolyte can intelligently and dynamically respond to changes in the local electrochemical environment, exhibiting the characteristics of actively intervening in and inhibiting dendrite growth.

This invention provides a magnetic storage structure and a method for fabricating the magnetic storage structure. The magnetic storage structure includes: a magnetic tunnel junction; a spin-orbit torque layer stacked on top of the magnetic tunnel junction; a first conductive portion located on the side of the spin-orbit torque layer away from the magnetic tunnel junction, wherein the surface end of the first conductive portion near the spin-orbit torque layer has a first notch, and the portion of the first conductive portion other than the first notch has a first protrusion, the first protrusion of the first conductive portion being in contact with the spin-orbit torque layer; and a second conductive portion located on the side of the spin-orbit torque layer away from the magnetic tunnel junction and spaced apart from the first conductive portion, wherein the surface end of the second conductive portion near the spin-orbit torque layer has a second notch, and the portion of the second conductive portion other than the second notch has a second protrusion, the second protrusion of the second conductive portion being in contact with the spin-orbit torque layer.

The application belongs to the field of lithium ion batteries, and specifically discloses aluminum-doped cobalt carbonate, a preparation method and application thereof. The aluminum-doped cobalt carbonate with small particle size, wide particle size distribution and high tap density can be prepared by controlling the reaction process for preparing the aluminum-doped cobalt carbonate.

The invention discloses a GaN-based double-channel MIS grid mixed anode diode with an AlN etching stop layer and a preparation method of the GaN-based double-channel MIS grid mixed anode diode. The problem that in the prior art, the accurate GaN etching difficulty is too large is mainly solved. According to the scheme, the method comprises the following steps: 1) growing a heterojunction layer and a SiN passivation layer on a substrate layer; 2) arranging a groove for forming cathode contact on the epitaxial layer structure, and preparing a cathode; (3) grooves used for anode ohmic contact and Schottky contact are formed in the epitaxial layer structure through three-step etching; the invention discloses an MIS HEMT (Metal Insulator Semiconductor High Electron Mobility Transistor) structure and a manufacturing method thereof.According to the MIS HEMT structure and the manufacturing method thereof, the on resistance and the turn-on voltage can be obviously reduced, the rectification efficiency is improved, and the large current driving capability is achieved.

The application discloses an electrode for electric spark machining of a micro-hole with a large depth-diameter ratio and a preparation method thereof, and belongs to the technical field of tool electrode preparation. The electrode comprises a tungsten wire rod, and the diameter of the tungsten wire rod is 0.1-0.4 mm. The tungsten wire rod is characterized in that a uniform and stable zirconium oxide insulation layer is arranged on the peripheral wall of the tungsten wire rod. The electrode selects the stable zirconium oxide layer as the insulation layer, which can enhance the insulation property of the peripheral wall of the electrode. On one hand, the electrode can reduce the discharge removal between the peripheral wall of the electrode and the side wall of the hole in the electric spark machining process, thereby improving the forming precision of the micro-hole. On the other hand, the electrode can reduce the skin effect of the current in the electrode and increase the current density of the center of the end surface of the electrode. Meanwhile, the end surface of the insulation layer has the conductivity in the electric spark discharge, electric spark discharge is generated to remove the material, and the electric spark machining efficiency is improved.

This invention relates to a flow-type electrolysis device for enhancing carbon dioxide mass transfer and its application, comprising: a clamping assembly including a first clamping plate and a second clamping plate; at least one set of electrode assemblies, each including a cathode plate and an anode plate, the cathode plate being connected to the first clamping plate and the anode plate being connected to the second clamping plate, the cathode plate having a cathode medium outlet and a cathode medium inlet, and the anode plate having an anode medium outlet and an anode medium inlet; and a bipolar plate located between the cathode plate and the anode plate; wherein the diameter of the bipolar plate outlet is smaller than the diameter of the bipolar plate inlet. This invention utilizes the electrolyte flow characteristics to solve the problems of difficult water management and poor stability caused by salt deposition in traditional membrane reactors, ultimately achieving both high current density and stability in the electrocatalytic reduction of carbon dioxide. This enhances the carbon dioxide mass transfer process.

A linear friction welding joint current auxiliary local shape correction method of blisk, steps are as follows: preparing shape correction equipment; measuring blisk to determine size out-of-tolerance blade; machining necking transition section at weld; sending blisk into vacuum environment device; sequentially installing single shape correction tooling and electrode at weld, electrode is connected to direct current pulse power supply; connecting cooling device; sequentially starting vacuum environment device, cooling device, direct current pulse power supply and single shape correction tooling; correcting and preserving; after shape correction stress is reduced to set value, direct current pulse power supply is turned off; cooling to normal temperature; recovering normal pressure environment, cooling device is turned off, electrode and single shape correction tooling are sequentially removed. The present application utilizes Joule heat effect and electroplastic effect generated by current through metal to realize local heating of welding joint, has directional correction ability to any specific out-of-tolerance blade, and improves shape correction efficiency; necking transition section is used to improve current density, shape correction temperature field is more concentrated, and high-precision shape correction is realized by spot cooling.

The invention provides a synthetic microbial community and application thereof in degradation of trehalose and biofuel cells, and belongs to the technical field of synthetic microbiology and biological energy. A synthetic microbial community is constructed by means of synthetic biology, the synthetic microbial community comprises genetic engineering escherichia coli and shewanella, and the synthetic microbial community can realize a complete metabolic pathway from trehalose to acetic acid and an efficient electron transport chain; the method can be used for treating trehalose-rich wastewater or wastes and the like; the synthetic microbial community can be used for a microbial fuel cell, can stably generate current density and power density which are higher than those of a single strain or a natural mixed flora in the microbial fuel cell, and has good practicability.

The application relates to the photovoltaic technology field, in particular to a back contact cell, a preparation method thereof, a back contact laminated cell and a photovoltaic module. The back contact cell comprises a substrate and a first passivation structure, and a first surface of the substrate is sequentially provided with a first hydrogenated amorphous silicon oxide layer, a second hydrogenated amorphous silicon oxide layer and a P-type doped layer. The oxygen doping ratio of the first hydrogenated amorphous silicon oxide layer is X1, the oxygen doping ratio of the second hydrogenated amorphous silicon oxide layer is X2, and X1 and X2 satisfy X1>X2. By arranging the laminated structure with the oxygen doping ratio gradient design, the asymmetric carrier transport channel can be formed, the blocking effect on the electrons and the transmission effect on the holes can be improved, the selective transmission of the carriers can be realized, the parasitic absorption at the interface can be reduced, the probability of the repeated absorption of the light by the substrate can be increased, the open-circuit voltage and the short-circuit current of the back contact cell can be improved, and the photoelectric conversion efficiency of the back contact cell can be improved.

This invention discloses a method and apparatus for extracting tellurium from tellurium-containing materials, comprising the steps of: mixing a sulfur-containing leaching agent with the tellurium-containing material to obtain a mixed slurry; subjecting the mixed slurry to cyclone electrolysis to obtain an anodic precipitate and a cathode product; and purifying the cathode product to obtain cathode tellurium. This invention combines selective leaching and electrowinning recovery of metallic tellurium into a single process, and utilizes the synergistic oxidation of anodic electro-oxidation and oxygen generation during electrolysis to destroy the difficult-to-leach elemental and alloy components in the tellurium-containing material, achieving one-step selective and efficient separation of tellurium-containing materials and preparation of high-purity tellurium products. By employing cyclone electrolysis to prepare cathode tellurium, this invention avoids the adverse effects of slow solution flow leading to reduced current efficiency and increased concentration polarization in traditional tellurium electrolysis, shortens the tellurium electrolysis cycle, and reduces the required concentration of impurity elements in the electrolyte, offering advantages such as high selectivity, high current density, and high product purity.

This invention discloses an electroplastic rolling apparatus and method for sheet metal. By simultaneously setting up a rolling assembly and a current application assembly, not only can current be effectively introduced into the plastic deformation zone of the workpiece, realizing the use of the electroplastic effect of metal to assist in metal rolling and forming, but compared with existing electroplastic rolling mills, the current loop is shortened and the resistance of the current loop is reduced. This allows the workpiece to be loaded with a larger current density under the same power supply and operating conditions, obtaining a more obvious electroplastic effect and effectively improving the plastic forming ability of the workpiece. In addition, since the current application assembly introduces current into roll one and roll two, it plays a certain role in the electric heating of roll one and roll two, thereby realizing the warm rolling forming process of the workpiece. This combines electroplastic rolling and warm rolling, achieving the goal of improving the plasticity of the metal workpiece and improving the mechanical properties of the rolled workpiece.

The application discloses a high-current-density vertical power supply and distribution module and a packaging process thereof, and belongs to the technical field of microelectronic packaging. The module and the packaging process solve the problems of large size, low current density, high buried chip packaging thermal resistance, difficult heat dissipation and excessively high junction temperature of the prior art. In the module, a bottom electrode, a packaging substrate, a power device and a top electrode are stacked. Integrated circuit chips and passive devices are embedded in the packaging substrate and stacked in the vertical direction. The packaging process comprises embedding the integrated circuit chips in a first core plate, embedding the passive devices in a second core plate, and pressing to form the packaging substrate; drilling, hole wall metallization and hole plugging are performed on the packaging substrate to obtain a whole to be packaged; and the whole to be packaged is subjected to pouring, grinding and surface metallization. The module and the packaging process can effectively improve the current density.

The application discloses a trench gate super junction IGBT device, and a device unit structure comprises: a P-type doped body region is formed in a surface region of an N-type column and a P-type column. A trench gate is located in a top region of the N-type column and passes through the body region. An emitter region is formed on a surface of the body region at a side of the trench gate. A first contact hole at a top of the emitter region is connected to an emitter electrode composed of a front metal layer. A trench isolation structure is formed in an N-type column between the first contact hole and an adjacent P-type column, the trench isolation structure is composed of a first dielectric layer filled in an isolation trench, the isolation trench passes through the body region and divides the body region into a first body region part and a second body region part. The trench isolation structure cuts off a conduction path of the second body region part and the P-type column to the first body region. The application also discloses a manufacturing method of the trench gate super junction IGBT device. The application can realize isolation of the P-type column and the P-type body region, thereby preventing formation of a hole conduction path of the P-type column to the P-type body region.

The utility model discloses a biological chip structure. The biological chip structure comprises a conductive base layer, the plurality of conductive salient points are distributed in an array and are formed on the surface of one side of the conductive base layer, and the conductive salient points and the conductive base layer are integrally formed; the insulating layer covers the surface of one side of the conductive base layer with the conductive salient points, an opening for exposing a part of the conductive salient points is formed in the insulating layer, the exposed part serves as an electrode point, and a gold plating layer can also be formed on the electrode point. According to the structure, electric field focusing is achieved through the array design of the conductive salient points, the working voltage requirement is lowered, and energy loss is reduced; the integrated design eliminates interface contact resistance and improves the current transmission efficiency; the design of the opening of the insulating layer accurately controls the electric field action range and enhances the space targeting; the design of a transition layer and a groove is omitted, the manufacturing complexity and cost are reduced, and the device is suitable for efficient transdermal delivery of active ingredients and is not limited to beauty and drug treatment scenes.

The invention relates to a baffling type electrochemical reactor, which belongs to the technical field of electrochemical oxidation, and comprises a reaction cavity, the lower part of the reaction cavity is provided with a medium inlet, and the upper part of the reaction cavity is provided with a medium outlet; and the at least one electrode reaction unit is arranged in the reaction cavity. Wherein the electrode reaction unit comprises a plurality of anode plates and a plurality of cathode plates which are arranged in a staggered manner, spoilers are arranged at the edges of the two sides of each cathode plate, and the spoilers, the adjacent cathode plates and the blocking plates jointly form a closed baffling channel, so that when fluid flows along gaps between the anode plates and the cathode plates in the reaction cavity, the flow of the fluid is blocked; and the direction is repeatedly changed under the guidance of the spoilers, so that a Z-shaped baffling path is formed. The structure is simple, the contact area of the anode and the conductive part is large, the mass transfer rate of reactants on the surface of the electrode can be increased, the surface flow velocity of the electrode plate is improved, and the electrochemical reaction rate is increased.

The application belongs to the technical field of electrocatalytic material preparation, and discloses a method for preparing a cobalt tungstate electrode based on gas-phase replacement, an electrode and application. 3 A seed layer is formed on the surface of the conductive substrate; then the conductive substrate is placed in a hydrothermal reaction solution containing tungstate, and a hydrothermal reaction is performed; after cleaning and drying, annealing treatment is performed, so that a WO3 nanosheet array is obtained on the conductive substrate; then the conductive substrate and a volatile cobalt source are placed in a protective atmosphere and under negative pressure to perform a gas-phase cation replacement reaction, so that a cobalt tungstate multistage nanostructure electrode is obtained. The application utilizes the characteristics of gas-phase reaction, and on the basis of inheriting the two-dimensional array structure of the precursor, a hierarchical rough morphology is constructed in situ; the prepared cobalt tungstate multistage nanostructure electrode exhibits excellent catalytic activity in the electrocatalytic oxygen evolution reaction in an alkaline medium, the process is simple and the parameters are controllable, and the application has good application prospect.

The present application relates to a kind of high-voltage diamond diode of large current and its manufacturing method, profile structure is based on substrate diamond (1) as bottom, based on substrate diamond (1) upper surface local setting a type doped diamond (2), further in the upper surface of a type doped diamond (2), and substrate diamond (1) upper surface layout a type conducting channel (7), then in a type conducting channel (7) corresponding a type doped diamond (2) position area local setting barrier adjustment layer (6), finally setting first electrode (4), second electrode (5), and dielectric layer (3), constitute high-voltage, large current density diamond diode, solve the problem such as low voltage, low current density of traditional power diamond schottky diode, and propose manufacturing method, innovation design manufacturing process sequence, reduce leakage current and process difficulty, the designed diamond diode effectively improves actual work efficiency.

The invention discloses a composite additive for a zinc ion battery electrolyte, the zinc ion battery electrolyte as well as a preparation method and application of the zinc ion battery electrolyte. The composite additive comprises a carbon nano tube and an anionic surfactant, and the carbon nano tube and the anionic surfactant can generate micelle action to form nano micelle particles. The zinc ion battery electrolyte comprises zinc ions and the composite additive for the zinc ion battery electrolyte. The composite additive disclosed by the invention has multiple functions, and can finally realize multifunctionality of inducing uniform nucleation of zinc at an interface and retarding dendritic crystals and various side reactions through multiple mechanisms such as regulation and control of an H bond network of water molecules, improvement of a hydrated zinc ion solvation structure, generation of a shielding layer after adsorption on the surface of a negative electrode, regulation and control of an electric field and the like. The zinc ion battery electrolyte realizes dendrite-free stable circulation of a zinc negative electrode in a symmetrical battery assembled by using the zinc ion battery electrolyte under various current densities and surface capacities, and the cycle life of the negative electrode is greatly prolonged.

The utility model belongs to the field of energy absorption structure manufacturing, and provides a porous material manufacturing device based on metal filings. The device comprises a device body and two electrodes installed at the upper end and the lower end of the device body. The upper and lower ends of the device body are respectively provided with an L-shaped mounting groove, and the side wall of the device body is provided with a temperature measuring port. Electrode water inlets and outlets are formed in two ends of the electrode, and an electrode water cooling cavity is formed in the electrode; a plurality of partition plates are arranged in the electrode water cooling cavity; one end of the electrode is provided with an electrode bolt and a nut; and the electrode is fixed in the L-shaped mounting groove through the electrode water inlet / outlet.

This invention provides an electrolysis device, an electrolysis module comprising the same, and a cleaning device, relating to the field of cleaning apparatus technology. The electrolysis device provided by this invention contains a dandelion-like catalyst. Using this electrolysis device to electrolyze water, a high current density can be achieved at a relatively low voltage, significantly improving the generation efficiency of micro / nano bubbles and reducing energy consumption. Simultaneously, it can also generate active oxygen substances, achieving a dual effect of decontamination and sterilization.

This invention discloses a method for preparing biomedical layered heterogeneous graphene-magnesium-based composite materials. The method involves depositing graphene oxide onto magnesium-based alloy sheets using electrophoretic deposition. By varying the deposition time and the initial graphene thickness, layered graphene-magnesium-based composite materials with different structural parameters are constructed. The composite materials are then subjected to spark plasma sintering and multiple rolling steps to obtain the biomedical layered heterogeneous graphene-magnesium-based composite material. This method can reduce the degradation rate of bio-magnesium alloys in vivo, increase the service life of biomedical magnesium alloys in the human body environment, and simultaneously improve the strength and toughness of the material itself.