259 results about "Dual electrode" patented technology

The invention discloses a method for preparing an iron-nickel-molybdenum-based electrocatalyst through combination of electrodeposition and rapid Joule heat and application of the method. The method comprises the steps that S1, a porous nickel substrate is pretreated, and the pretreated porous nickel substrate is obtained; s2, obtaining a nickel salt solution, a molybdenum salt solution and a ferric salt solution; s3, obtaining a mixed solution; s4, putting the mixed solution serving as electrolyte into a dual-electrode electrolytic tank, carrying out electro-deposition treatment by taking the pretreated porous nickel substrate as a cathode and an inert electrode as an anode, and washing and drying to obtain a Fe-Ni-Mo-LDH precursor; and S5, carrying out Joule thermal pyrolysis treatment on the Fe-Ni-Mo-LDH precursor, so as to obtain the iron-nickel-molybdenum based electrocatalyst. The preparation method can effectively regulate and control the size structure of the catalyst, and is suitable for preparing iron-nickel-molybdenum-based electrocatalysts with different substrates and different sizes; and the electrocatalyst has the advantages of uniform and stable nanostructure and high loading capacity. Meanwhile, the preparation method is short in reaction time, high in heating efficiency, high in repeatability and suitable for industrial large-scale production.

The invention relates to a preparation technology of an electrochemical catalytic material, and aims to provide a method for preparing an electrode material through pulse electrodeposition and application of the electrode material in an oxygen evolution reaction. The method comprises the following steps: constructing a dual-electrode electrolysis system, and co-depositing transition metal ions and selenium ions on a working electrode by adopting a pulse electrodeposition method to form a catalyst layer containing transition metal and selenide; then the working electrode is used for building an electrochemical system, electrochemical activation treatment is conducted on the working electrode through cyclic voltammetry, a selenium phase is induced to fall off, porous metal oxide is formed by reconstructing the surface of a catalyst layer, and the electrode material for the water electrolysis oxygen evolution reaction is obtained. The selenium phase is induced to fall off through electrochemical activation to form a porous metal oxide structure, the specific surface area is remarkably increased, rich oxygen vacancies are formed, the electronic structure is optimized, more active sites are exposed, and the catalytic activity is improved; the method is easy to operate, high in parameter controllability, free of high-temperature and high-pressure equipment and suitable for large-scale production.

The invention relates to the technical field of electrode plates, and discloses a dual-electrode plate of a solid-state lithium metal battery and a preparation method of the dual-electrode plate. Comprising the following operation steps: depositing nano-copper on one side of a polymer base material layer to obtain a copper base layer; further depositing foamy copper on the surface of the copper base layer to obtain a foamy copper layer; a pole piece A is formed; depositing metal aluminum on the other side of the polymer base material layer in the pole piece A to obtain an aluminum layer; a pole piece B is formed; depositing metal lithium on the surface of the foamy copper layer in the pole piece B to obtain a metal lithium layer; further coating the surface of the lithium metal layer with an organic solution, and drying to obtain a polymer solid electrolyte layer; a pole piece C is formed; coating the surface of the aluminum layer in the pole piece C with positive active slurry, and drying to obtain a positive active material layer which is taken as a pole piece D; and rolling the pole piece D, respectively carrying out transfer welding on the aluminum layer on the positive electrode side and the copper layer on the negative electrode side, and leading out a metal foil tab to obtain the dual-electrode pole piece of the solid-state lithium metal battery.

The invention relates to the technical field of power grid measurement, in particular to a miniaturized wireless self-powered alternating current electric field measurement method and system. Comprising the following steps: acquiring radio frequency energy in an electric field environment, and converting the radio frequency energy into direct current electric energy through a radio frequency energy acquisition system consisting of a microstrip antenna, a voltage doubling rectifying circuit and an energy management circuit; an alternating current electric field signal is collected through a differential dual-electrode sensor structure, and an electric field voltage signal is generated; amplifying the voltage signal through an instrument amplifier, and obtaining a digital signal of the electric field signal through an analog-to-digital conversion circuit; and processing and analyzing the alternating current electric field information according to the digital signal. By combining a radio frequency energy acquisition technology with a differential dual-electrode sensing structure, the electric field sensor has the performance characteristics of self energy supply, miniaturization, high precision, wide frequency response and low power consumption. The system can measure various types of electric field signals, including sine wave, triangular wave and square wave electric field signals, has a wide frequency range and a wide measuring range, and is excellent in linearity.

Disclosed are devices, systems and methods for in vivo monitoring of localized environment conditions within a patient user by measuring analytes, including glucose, oxygen, and / or other analytes. In some aspects, a sensor device includes a wafer-based substrate, at least one electrochemical sensor two-electrode contingent including a working electrode and a reference electrode on the substrate and configured to detect a target analyte in a body fluid when the sensor device is deployed within a subject's body, where the working electrode is functionalized by a chemical layer configured to facilitate a reaction involving the target analyte that produces an electrical signal; and an electronics unit in communication with the electrochemical sensor electrode contingent to transmit the electrical signal to an external processor.

The invention belongs to the technical field of photoelectrocatalytic materials, and particularly relates to a reticular Cu2O / TiO2 composite p-n type heterojunction photoelectrocatalytic material as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, adopting a crisscrossed titanium mesh as a substrate, preparing a mesh-shaped TiO2 nanotube array through a dual-electrode oxidation method, and then loading p-type semiconductor Cu2O onto a wide-band-gap n-type semiconductor TiO2 nanotube array through an electrochemical deposition method, so as to prepare the mesh-shaped Cu2O / TiO2 composite p-n type heterojunction photoelectric catalytic material. Compared with a TiO2 material, when the material is used as a photoelectrocatalysis material to prepare hydrogen, the light absorption band edge of TiO2 is widened, the light energy utilization rate of TiO2 is improved, the performance of TiO2 in the aspect of photoelectrocatalysis hydrogen preparation is greatly improved, and the material is suitable for photoelectrocatalysis hydrogen preparation and belongs to the fields of chemical materials, new energy, environment and the like. The problem that the conversion efficiency is low when hydrogen is prepared through pure TiO2 photoelectrocatalysis is solved.

The invention discloses a carbon dioxide-rich phase electrochemical corrosion in-situ test system and method. The system comprises a carbon dioxide pressurizing device, a reaction kettle, a heating device, a first test piece and an electrochemical analyzer, the carbon dioxide pressurizing device is used for preparing pressurized carbon dioxide and injecting the pressurized carbon dioxide into the reaction kettle; the reaction kettle is used for providing and maintaining a stable set temperature and pressure environment in the kettle; the heating device comprises a temperature control system and a heating jacket, the heating jacket covers the reaction kettle, and the reaction kettle is heated under the control of the temperature control system; and the two first test pieces form double electrodes which are electrically connected with an electrochemical tester through wires. The double electrodes are composed of two first test pieces which are oppositely arranged in a grid-shaped crossed manner, and the distance between the electrode arrays of the double electrodes is less than or equal to 0.1 mm, so that the test surfaces of the double electrodes have a good conduction technical effect under the action of a discontinuous thin liquid film, and the characteristic simulation of a metal / solution interface process and non-uniform and discontinuous electrochemical parameters is realized.

The present invention discloses a flexible wearable potassium ion detection sensor and a preparation method thereof, and relates to the field of flexible sensors. The flexible wearable potassium ion detection sensor comprises an electrode, a liquid film and a substrate, wherein the liquid film covers the surface of the electrode, and the electrode is arranged on the substrate; the electrode comprises a three-electrode system and a two-electrode system; the three-electrode system comprises a working electrode, a reference electrode and a counter electrode; the two-electrode system comprises a working electrode and a reference electrode; the working electrode, the reference electrode and the counter electrode are prepared by a micro-nano processing method or a screen printing method and arranged on the substrate, and the substrate is a flexible planar substrate or a flexible microneedle substrate. The present invention adopts the above-mentioned flexible wearable potassium ion detection sensor and a preparation method thereof, replaces the traditional glass membrane + internal reference solution structure, greatly reduces the volume of the potassium ion selective electrode, realizes the miniaturization of the potassium ion sensor, enhances the practicability, and broadens the scope of application.

The invention discloses a glucose oxidase membrane electrode based on a dual-electrode system and a preparation method thereof. The glucose oxidase membrane electrode comprises a glucose oxidase membrane and an electrode circuit board, the glucose oxidase film is a polymer film containing glucose oxidase; the electrode circuit board is composed of a ceramic substrate, a detection module, an auxiliary detection module, a signal detection module, a connecting circuit and insulating ink, the detection module and an auxiliary electrode are connected with the signal detection module through the connecting circuit, and the connecting circuit is covered with the insulating ink; the detection module, the auxiliary detection module, the signal detection module and the connecting circuit are made of noble metal with electro-catalysis performance; the detection module and the auxiliary detection module are coated with the glucose oxidase film, and the glucose oxidase electrode is obtained after curing. The electrode has the advantages of being rapid and accurate in detection, long in service life and the like.

The invention discloses a preparation method of a graphite phase carbon nitride / titanium dioxide photo-anode based on carbon dot modification. The preparation method comprises the following steps: firstly, preparing graphite-phase carbon nitride and a carbon dot diluent, adding the graphite-phase carbon nitride and the carbon dot diluent into a precursor solution of titanium dioxide, dispersing and fusing, and growing a composite photocatalyst on conductive glass through in-situ hydrothermal treatment to obtain the photo-anode. The optimal material ratio is analyzed through characterization means such as electrochemical test and ultraviolet diffuse reflection spectrum. The optimal reaction condition of the photo-anode is explored by constructing the double-electrode photocatalytic fuel cell.

The invention discloses a multi-membrane stack type electrolysis device for producing acid and alkali by using high-salinity organic wastewater, and relates to the technical field of high-salinity organic wastewater treatment.The multi-membrane stack type electrolysis device comprises a stack system, a direct-current power source system and a liquid path circulation system, and the stack system comprises an anode clamping plate and a cathode clamping plate; an anode plate is arranged at one end, facing the cathode clamping plate, of the anode clamping plate, a cathode plate is arranged at one end, facing the anode plate, of the cathode clamping plate, and a plurality of circulating stack units are arranged between the cathode plate and the anode plate; the circulating stack unit comprises a wastewater chamber partition plate, a cation exchange membrane, an alkali chamber partition plate, a bipolar membrane, an acid chamber partition plate, an anion exchange membrane, a wastewater chamber partition plate and a flexible double-electrode plate. Therefore, under the action of an external electric field, salt cations and salt anions in the wastewater are directionally migrated and respectively enter the alkali chamber and the acid chamber through the anion-cation exchange membrane, so that the purpose of recovering salt is achieved. Meanwhile, salt in the wastewater is removed, and organic matters are degraded, so that the subsequent biochemical treatment efficiency of the wastewater is improved.

The utility model discloses a continuous production device for single-walled carbon nanotubes. The continuous production device comprises a raw material feeding unit, a reaction unit, a cooling unit and a product collecting unit, the reaction unit comprises a plasma cracking furnace, a first cathode, a first anode, a second cathode and a second anode are arranged in the plasma cracking furnace, the first cathode and the first anode are connected to a first plasma power supply, and the second cathode and the second anode are connected to a second plasma power supply; according to the utility model, the double-electrode gun is adopted, so that higher power and higher temperature can be realized, and the dosage of a catalyst is small, so that the catalyst in the plasma cracking furnace can be fully evaporated without crucible evaporation; the proportion of the required carbon source is low, and the double-electrode gun can realize higher airflow velocity, so that amorphous carbon can be prevented from being generated; therefore, the device can be used for continuously producing the carbon nanotubes, the utilization rate of the catalyst and the raw materials can be improved, the obtained product is high in purity and stable in quality, and the device is suitable for industrial large-scale production.

The invention relates to the field of fused salt energy storage, and provides a fused salt energy storage system based on an electrochemical sensing technology, comprising: a fused salt energy storage module for storing and converting energy through a liquid-solid two-phase heat storage medium and a modular heat storage device; the electrochemical sensing module is used for collecting electrochemical parameters of the fused salt in real time through a dual-electrode system sensor; the data processing module is used for analyzing the corrosion product layer structure of the metal material in the molten salt based on the electrochemical impedance spectroscopy and calculating the ion diffusion rate, and calculating the corrosion rate in real time by combining the charge transfer resistance; and the intelligent control module is used for dynamically adjusting the rotating speed of the fused salt circulating pump and the steam heat exchange power according to the corrosion rate and triggering local isolation protection. Intelligent management of fused salt energy storage can be achieved, the efficiency and safety of fused salt energy storage are remarkably improved, remarkable advantages are shown in the aspects of improving energy efficiency, guaranteeing safe operation and reducing maintenance cost, and an efficient and stable solution is provided for the fields of new energy consumption, industrial waste heat utilization and the like.

The invention discloses a composite bipolar molecule for a water-soluble dual-electrode flow battery system as well as a preparation method and application of the composite bipolar molecule, and the composite bipolar molecule for the water-soluble dual-electrode flow battery system is prepared by the following preparation steps: S1, taking nitroxide free radical piperidinol and acyl chloride as raw materials, and adding a catalyst to carry out acylating chlorination reaction; and S2, carrying out a quaternization reaction with 1-propanesulfonyl-4, 4 '-dipyridyl to synthesize the water-soluble bipolar composite molecular structure. The bipolar composite molecule has the beneficial effects that the bipolar composite molecule can be used for positive and negative electrode materials of a water-soluble organic flow battery system, so that the influence caused by cross contamination between electrode materials can be avoided, and the stability of battery circulation is improved. Meanwhile, the organic dual-electrode flow battery system is suitable for a battery environment using an in-situ generated electrolyte, has the advantages of low cost, stable charging and discharging performance, high safety, high active material solubility and the like, and can meet the large-scale energy storage requirement.

The invention provides a two-dimensional resistive sensor array suitable for measurement in a high-temperature environment, and belongs to the technical field of sensors, the resistive sensor array comprises a substrate, an array circuit and an insulation protection layer, the array circuit comprises a front sensor array and a back terminal circuit, the front sensor array comprises a transverse wire, a longitudinal wire, a sensor unit and a node insulating layer, the sensor unit is a dual-electrode sensor, electrodes at the two ends of the sensor unit are connected with the transverse wire and the longitudinal wire respectively, the node insulating layer is used for insulating the crossed part of the transverse wire and the longitudinal wire, and the resistance type sensor array is a thick film or thin film circuit; the number of external connection ports can be greatly reduced while a large number of two-dimensional distribution physical parameter fields are measured, measurement under various high-temperature, high-pressure and high-vibration severe environments can be achieved through the manufacturing material and the packaging technology, and the influence caused by invasion of a measured object is reduced to the maximum extent.

The invention discloses a magnetic field auxiliary dry type electrochemical polishing device and method for the inner surface of a pipeline, and the device comprises a base which is provided with a double-sliding-block displacement table, and the double-sliding-block displacement table is provided with a lower sliding block and an upper sliding block; a motor clamp is arranged on the upper sliding block, a motor is arranged on the motor clamp, the motor is connected with an electrode clamp, and the electrode clamp clamps an electrode; a workpiece clamp is arranged on the lower sliding block, a workpiece is arranged on the workpiece clamp, a lower container is arranged below the workpiece, an annular magnet is arranged outside the workpiece in a surrounding mode, and an inner space formed by the workpiece and the lower container is filled with a solid medium. The electrode clamp is connected with the rotating end of the conductive slip ring, and the static end of the conductive slip ring is connected with the anode of the power supply through a wire. The magnetic field assists in regulating and controlling ion migration, dry type electrochemical polishing is achieved by combining the synergistic effect of the two electrodes, liquid electrolyte pollution is avoided, and the device has the advantages of being high in polishing uniformity, convenient and fast to operate and low in cost and is suitable for precise runner inner surface treatment of the additive manufacturing pipeline.

The invention discloses a directional osteogenesis induction skull patch based on an MXene dual-electrode plate and a pulsed direct-current electric field and a preparation method of the directional osteogenesis induction skull patch. The method specifically comprises the following steps: 1) performing intercalation on MXene by using a bacterial cellulose solution as an intercalation agent, and combining a layer-by-layer blade coating and laminating process to obtain a composite MXene electrode plate; (2) preparing a porous GelMA pre-solution loaded with bone marrow mesenchymal stem cells; 3) cutting the composite MXene electrode plate into a proper shape to obtain an upper-layer electrode plate and a lower-layer electrode plate, tiling the lower-layer electrode plate as a substrate, dispensing a cell-loaded porous GelMA pre-solution on the surface of the lower-layer electrode plate, covering the upper-layer electrode plate, and performing gelation by combining lateral UV curing to obtain a double-layer electrode plate composite gel material; and 4) carrying out in-vitro culture on the double-layer electrode plate composite gel material for several days, including electrical stimulation culture and non-electrical stimulation culture, and then stripping the upper electrode plate and the lower electrode plate to obtain the skull patch. According to the skull patch, in-vivo skull defect repair can be achieved, and a brand-new skull regeneration and repair strategy is created.

The invention belongs to the technical field of steel plate pickling, and relates to a method for carrying out pretreatment and pickling end point judgment on hot-rolled strip steel in hydrochloric acid. The method specifically comprises the following steps: taking a to-be-used hydrochloric acid liquid for testing, heating the hydrochloric acid liquid, adding a wetting reagent A and a potential stabilizing reagent B, and putting a to-be-measured hot-rolled strip steel into the hydrochloric acid liquid; and measuring the pickling process of the hot-rolled strip steel by adopting a dual-electrode detection system and a constant potential rectifier, synchronously recording electrode potential values in different time periods in the process, and taking a time point when a potential first-order derivative value is basically unchanged as the pickling end point time of the hot-rolled strip steel. According to the method, the implementation process is simple, only certain manpower needs to be input for manual operation, and analysis instruments related to related work are mature; the method can effectively measure the pickling end point of the hot-rolled strip steel, especially the ultra-high-strength hot-rolled steel plate in the acid liquor, eliminates the effects of various influence factors in pickling, and has extremely high practical application value.

A transcutaneous sensor configured to measure one or more physiological conditions of a patient. The transcutaneous sensor includes a substrate and first and second working electrodes on the substrate. The first working electrode includes a first active sensing area and the second working electrode includes a second active sensing area. The first active sensing area of the first working electrode is longitudinally offset along the substrate from the second active sensing area of the second working electrode.

The invention discloses a dual-electrode-based high-sensitivity differential pressure ceramic capacitive sensor and a measurement method thereof, and belongs to the technical field of pressure sensors. The sensor comprises a ceramic substrate, a dual-electrode structure, a differential pressure sensitive diaphragm and a signal processing module. The two electrodes are symmetrically distributed on the two sides of the diaphragm, when the diaphragm is subjected to the differential pressure effect on the two sides, capacitance changes reversely, high-sensitivity detection of the differential pressure is achieved through a differential calculation formula, and the sensitivity is improved by two times compared with a single electrode. And the ceramic plate integrates an overvoltage protection function, so that the diaphragm is prevented from over-limit deformation. The design solves the problems that a traditional sensor is low in sensitivity and weak in interference resistance in tiny differential pressure detection, and can be widely applied to the fields of industrial pressure monitoring, automobile differential pressure control, new energy battery thermal management and the like. And the reliability and the precision are remarkably improved by a dual-electrode differential structure and an overvoltage protection mechanism, and an innovative scheme is provided for the design of a high-cost-performance capacitor core body.

Systems and methods that utilize a separator coated by particles for Li dendrite detection in an ordinary two-electrode battery system. The particles can be red phosphorus (RP) particles and / or other particles that are poor electronic conductors, are able to react with Li, and will form an insoluble product with Li, such as silicon, germanium, arsenic, metal oxides, metal halides, metal chalcogenides, chalcogenides, and LiMxEyOz (M=metal, E=nonmetal, O=oxygen, x≥0, y≥0, z≥0). These other particles can be used by themselves or in combination with one another. No additional electrode is needed, and the presence of Li dendrites can be detected simply based on the voltage profile during the charging step.

To provide a front zone double electrode unequal interval kiln and its operation method capable of highly efficient melting under a large flow rate.SOLUTION: A kiln includes a pool wall 1, the pool wall 1 forms a fining zone 8, a homogenizing zone 7 and a plurality of pre-smelting zones 6, the pre-smelting zone 6 is in communication with the homogenizing zone 7, the homogenizing zone 7 is in communication with the fining zone 8, an entire width of the pre-smelting zone 6 is greater than widths of the fining zone 8 and the homogenizing zone 7, a plurality of electrodes 2 are disposed on the pool wall 1 on two sides of each of the fining zone 8, the homogenizing zone 7 and the pre-smelting zone 6, and an interval between the electrodes on two sides of the pre-smelting zone 6 is less than an interval between the electrodes on two sides of the fining zone 8 and the homogenizing zone 7, so as to improve operation stability of an electrode electrification process of the kiln, and reduce occurrence of a "power failure" phenomenon.SELECTED DRAWING: Figure 1

The invention belongs to the field of electric arc furnaces in the metallurgical industry, and particularly relates to the field of electric arc furnace power supply, in particular to a double-electrode alternating-current electric arc furnace capable of achieving frequency-variable smelting operation. A TV1 high-voltage voltage transformer, an electric arc furnace circuit breaker and a CT1 high-voltage current transformer are connected to an inlet wire bus section; the system further comprises a phase-shifting N transformer and an alternating current-direct current-alternating current converter, a primary side winding of the phase-shifting N transformer is connected with the output end of the electric arc furnace circuit breaker, a secondary side of the phase-shifting N transformer is connected with the input end of the alternating current-direct current-alternating current converter, and a TV2 low-voltage voltage transformer and a CT2 low-voltage current transformer are arranged on the wire outlet side of the output end of the alternating current-direct current-alternating current converter. And the output end of the AC-DC-AC converter is connected with the outlet copper pipe, the flexible water-cooled cable and the copper-steel composite conductive cross arm through a large-current line, so that electric energy is transmitted to the dual-electrode graphite electrode. According to the invention, the smelting charging power is improved, the smelting power consumption is reduced, and the smelting efficiency is improved.

The utility model relates to the technical field of semiconductor manufacturing, in particular to a double-electrode electrostatic chuck for semiconductor equipment, which comprises a base and an electrostatic chuck main body part, the electrostatic chuck main body part is connected onto the base, and the electrostatic chuck main body part comprises a ceramic substrate, a graphical protective layer and a thin film electrode, the patterned protective layer covers the ceramic substrate, two thin film electrodes are arranged between the patterned protective layer and the ceramic substrate to form a dual-electrode structure, and the thin film electrodes are located between the ceramic substrate and the patterned protective layer or embedded in the ceramic substrate. According to the utility model, by forming the electrostatic chuck main body part with the graphical protective layer, the plasma resistance, the surface hardness and the thermal conductivity of the electrostatic chuck main body part are enhanced; the problems that in the prior art, an electrostatic chuck is prone to damage and the structure of the electrostatic chuck is unstable at high temperature are solved, and the service life of the electrostatic chuck is prolonged. The utility model also discloses a plasma processing device.

The invention provides a surgical electrode and a using method thereof, and relates to the technical field of medical instruments. Two electrode accommodating holes are formed in the fixed sleeve body, a telescopic electrode stem and a rotating electrode stem are respectively arranged in the two electrode accommodating holes, and a bending part is arranged at the end part of the rotating electrode stem; an electrode control circuit board is arranged in the containing cavity and electrically connected with the telescopic electrode rod and the rotary electrode rod. The surgical electrode has the beneficial effects that the telescopic assembly is arranged in the inner shell of the surgical electrode and can control the telescopic electrode rod to stretch out and draw back, so that the surgical electrode can execute single-electrode and double-electrode functions and has multiple functions, and the problem that an existing surgical electrode is single in function is solved; and in the switching process of the single-electrode working state and the double-electrode working state of the operation electrode, the tool bit does not need to be replaced. And in the dual-electrode mode, the distance between the electrodes is adjustable, so that the surgical electrode can adapt to the widths of different surgical wounds, the adaptability of the surgical electrode is improved, and the surgical effect is further improved.

A dual electrode DC electric arc melter 10 for a conductive material 12 comprises a vessel 14 for holding the material. The vessel comprises a sidewall 16, a roof 18 and a bottom 20 and defines a taphole 22 for molten metal. A tilting mechanism 24 enables selective tilting of the vessel to tap the molten metal from the vessel. First 26 and second 28 electrodes, in a normal operative position, extend through the roof into the vessel. An electrode manipulating arrangement 30 is configured to move the electrodes between the normal operative position and a position away from the vessel. A DC power system 32 drives via a DC output the first electrode as a cathode and the second electrode as an anode. An arc deflection compensation circuit 50 is provided for reducing deflection towards the sidewall of arcs extending from the first and second electrodes.

The invention discloses a double-flow slab tundish with a double-electrode plasma heating function. The double-flow slab tundish comprises a tundish body and a tundish cover arranged at the top of the tundish body, and a turbulence controller is arranged at the bottom of the tundish body; a barrage structure is arranged at one end of the interior of the tundish, and a uniflow control wall structure is arranged at the other end of the interior of the tundish. And a dual-electrode plasma heating device is arranged on the ladle cover. Single-flow pouring of the double-flow tundish is achieved, the size of a low-temperature area and the size of a dead area are reduced, slag entrapment is prevented, the temperature in the tundish is uniform, and the plasma heating efficiency is improved. And meanwhile, the tundish casting allowance is reduced.

The present invention discloses a gas hydrate generation device based on a dual-electrode electrostatic spray method. The device includes: a high-voltage electrostatic generator, a circulation pump, a reactor, a metal capillary, an atomizing nozzle, an annular electrode, a metal grid electrode plate, a first fluid pipeline for realizing the circulation of an aqueous solution in the reactor, and a second fluid pipeline for introducing gas into the reactor; the high-voltage electrostatic generator supplies power to the metal capillary and the annular electrode; the metal capillary is inserted into the reactor from the upper wall of the reactor; the atomizing nozzle is connected to the lower end of the metal capillary, and the inner surface is insulated; the annular electrode is located below the atomizing nozzle, and the surface of the annular electrode is insulated; the metal grid electrode plate is located below the annular electrode and is grounded; the metal grid electrode plate is insulated from the reactor and the aqueous solution in the reactor. The droplets generated by atomization of the present invention have smaller particle size and better directionality, and the distribution of the fog group is more uniform, which increases the gas hydration rate.

The object of the invention is a method of surface modification of titanium by forming a layer of titanium dioxide nanotubes (TNT) on a titanium substrate using anodisation in a two-electrode system, where the working electrode is a titanium foil and the reference electrode is a platinum foil and the electrolyte is an aqueous solution containing 85 to 90 wt% ethylene glycol and 0.65 wt% NH4 F, the method advantageously including a thermal modification step for 2 hours at 350-600 °C in an atmosphere of argon, either nitrogen or air.

The invention relates to the technical field of humidity sensors, and discloses a visual humidity sensor based on alternating-current electroluminescence, which comprises a base layer and a humidity-sensitive luminescent layer, a coplanar dual-electrode layer is arranged between the base layer and the humidity-sensitive luminescent layer, the humidity-sensitive luminescent layer is coated on the surface of the coplanar dual-electrode layer, and the humidity-sensitive luminescent layer is coated on the surface of the coplanar dual-electrode layer. Two electrodes of the coplanar dual-electrode layer are located on the same plane and are closely adjacent, the thickness of the two electrodes of the coplanar dual-electrode layer is 20 nm to 20 [mu] m, and the two electrodes of the coplanar dual-electrode layer are made of any one or a combination of more of metal, transparent conductive oxide, a nano conductive material, ionic conductive gel and a conductive polymer material; according to the humidity sensor, humidity sensing is achieved through luminous intensity changes caused by capacitance and impedance changes before and after moisture absorption, the luminous intensity changes before and after moisture absorption, and the luminous brightness is reduced along with increase of humidity.