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749results about How to "Avoid corrosion" patented technology

Off-grid alkaline hydrogen production system and power adaptive distribution and safety control method thereof

PendingCN121802433Areduce overpotentialDynamically adjust impedance characteristicsCellsEnergy inputControl theoryGas bubble
The invention relates to the technical field of off-grid renewable energy hydrogen production, and discloses an off-grid alkaline hydrogen production system and a power adaptive distribution and safety control method thereof, the off-grid alkaline hydrogen production system comprises a renewable energy power supply unit, a parallel electrolytic cell module, a gas-liquid treatment system and a main controller; in the Faraday hydrogen production mode, the bubble volume is compressed by adjusting the operation pressure so as to modulate the impedance characteristic of the electrolytic cell, and the energy efficiency is improved in cooperation with current control; and in the non-Faraday polarization hot standby mode, the voltage of the rectifier cabinet is controlled to be clamped to a non-gassing polarization interval, and liquid level plugging is constructed in the U-shaped communicating pipeline according to the fluid statics principle. The system is further provided with a transient buffering strategy based on the pneumatic capacity, and pressure attenuation is delayed through the gas dead zone volume when power is suddenly reduced. The problems of hydrogen production efficiency optimization, low-power safe hot standby and mechanical protection under wide power fluctuation are effectively solved.
Owner:内蒙古绿氢科技有限公司 +1

Preparation method of CoPx-CeO2 loaded platinum catalyst with core-shell structure and application of CoPx-CeO2 loaded platinum catalyst in seawater electrolysis for hydrogen production

The invention belongs to the technical field of hydrolysis hydrogen production, and particularly relates to a preparation method of a CoPx-CeO2 loaded platinum catalyst with a core-shell structure and application of the CoPx-CeO2 loaded platinum catalyst in seawater electrolysis hydrogen production. A Co (CO3) 0.5 (OH) nanorod precursor is prepared on foamed nickel through a hydrothermal method and then calcined to obtain CoPx, a CeO2 film is electrically deposited to obtain a CoPx-CeO2 composite carrier, and platinum is impregnated and loaded to obtain the CoPx-CeO2-Pt catalyst. The catalyst shows excellent hydrogen evolution catalytic activity in seawater, and the CoPx-CeO2 composite carrier prevents Pt nano-particles from being agglomerated through interaction of metal carriers, so that the atom utilization rate of Pt is increased. Meanwhile, the CeO2 film actively enriches OH <-> in an alkaline electrolyte to construct a local high-alkalinity microenvironment on the surface of the catalyst, Cl <-> in seawater is prevented from getting close to an active site corroding the catalyst through electrostatic repulsion, and the stability and durability of the catalyst are improved.
Owner:SUN YAT SEN UNIV

A weathering resistant steel and a method for manufacturing and using the same

This application relates to a weathering steel, its preparation method, and its application, belonging to the field of steel preparation technology. The chemical composition of the steel includes C 0.030-0.050%; Si ≤0.10%; Mn 1.25-1.70%; P ≤0.020%; S ≤0.003%; Al 0.02-0.05%; Nb 0.010-0.030%; Ti 0.03-0.07%; Ni 0.02-0.05%; Cu 0.2-0.5%; Cr 0.8-1.5%; N ≤0.0040%; Ca 0.001-0.004%. It adopts a reasonable ratio of weathering-resistant elements such as copper, chromium, and nickel added on a low-carbon, low-silicon, and low-manganese basis. The combination of Cu and Cr can form a dense α-FeOOH oxide rust layer on the surface of the steel, preventing further corrosion of the steel matrix.
Owner:SHOUGANG GROUP CO LTD +2

Hydrochloric acid ammonia corrosion test chamber

The utility model discloses a hydrochloric acid ammonia gas corrosion test case relates to test case technical field, including test case main part, support seat, waste gas treatment tank, support seat top both sides are connected with test case main part and waste gas treatment tank respectively. The utility model discloses a ammonia gas injection pipe and hydrochloric acid injection pipe inject proper amount of ammonia gas and hydrochloric acid gas into test case main part, wherein the hydrochloric acid conduit and ammonia gas exhaust pipe correspondingly connected of ammonia gas injection pipe and hydrochloric acid injection pipe are upside down distribution in test case main part, are favorable to the full mixing of hydrochloric acid gas and the ammonia gas below, form even corrosive gas environment, this can ensure that the corrosion effect that each part in test case receives is more consistent, thereby obtains accurate test result, wherein the test case main part inner wall has been daubed anticorrosive layer coating), can effectively prevent the corrosion of hydrochloric acid and ammonia gas to test case main part inner wall.
Owner:HEFEI YUANZHENG QUALITY TECH SERVICE CO LTD

An automatic polishing tool and polishing method for metal support

The application relates to the field of metal support polishing, in particular to an automatic polishing tool and polishing method for a metal support, the tool comprising a base, a rotating shaft, a motor, clamping members and a conductive wire, the rotating shaft being arranged on the base and capable of rotating relative to the base around a rotating shaft axis parallel to the vertical direction, the rotating shaft axis coinciding with the central axis of the rotating shaft; the two clamping members are sequentially arranged on the rotating shaft along the vertical direction and are relatively fixed with the rotating shaft; the conductive wire is used for clamping between the two clamping members, and in the clamping state, the part of the conductive wire between the two clamping members is arranged in parallel to the rotating shaft and is spaced apart from the rotating shaft in the radial direction of the rotating shaft; the application can reduce the consumption of polishing liquid and reduce the damage to the metal support.
Owner:JIANGSU LIKAI MEDICAL EQUIPMENT CO LTD

Sodium ion battery hard carbon negative electrode material based on step-by-step synergistic regulation and preparation method thereof

PendingCN122254472Apromote orderHigh closed pore volumeCell electrodesSecondary cellsActivated carbonElectrical battery
The application discloses a preparation method of a sodium ion battery hard carbon negative electrode material based on step-by-step synergistic regulation, and comprises the following steps: S1, biomass pretreatment; S2, low-temperature pre-carbonization to obtain biomass pre-carbonized carbon; S3, physical activation: the pre-carbonized carbon is placed in an activation atmosphere to perform medium-temperature activation, and biomass activated carbon is obtained; S4, high-temperature carbonization: the biomass activated carbon is placed in an inert atmosphere to perform high-temperature carbonization, and a hard carbon intermediate is obtained; S5, chemical vapor deposition coating: the hard carbon intermediate is placed in a mixed atmosphere of a coating carbon source and an inert gas to perform chemical vapor deposition coating, and a surface-coated biomass hard carbon negative electrode material is obtained. The application can realize a higher closed pore volume at a milder temperature, and the synergistic regulation pore forming mode of activating and forming pores first and then high-temperature closing pores also avoids the insufficient closed pores caused by single high-temperature treatment.
Owner:ZHEJIANG UNIV

A wet cleaning machine for semiconductor manufacturing

ActiveCN121237695BAchieve continuous wet cleaningImprove cleaning efficiency
This invention discloses a wet cleaning machine for semiconductor manufacturing, relating to the technical field of semiconductor wet cleaning equipment. It includes a closed-loop track for continuous wet cleaning of semiconductors. A cleaning component is slidably mounted on the closed-loop track, and a wafer is placed and fixed inside the cleaning component. The cleaning component is driven by a transfer mechanism to slide on the closed-loop track. The closed-loop track includes at least one arc-shaped segment. At least one set of chemical rinsing components and pure water rinsing components are respectively arranged on the outer and inner sides of the arc-shaped segment. By setting up the closed-loop track and driving the cleaning component to move on the closed-loop track through the transfer mechanism, in conjunction with the chemical rinsing components and pure water rinsing components, continuous wet cleaning of wafers can be achieved, simultaneously cleaning multiple wafers without waiting for the next wafer to be cleaned, effectively improving the efficiency of wafer cleaning and ensuring semiconductor production efficiency.
Owner:SUZHOU YINGTAKIZAWA SEMICON EQUIP CO LTD

A device for recovering low-pressure steam from a deaerator

ActiveCN224498476UPrevent direct emptyingavoid wasting
The utility model discloses a kind of transformation deaerator low-pressure steam emptying recovery device, including transformation deaerator, the upper portion of transformation deaerator is equipped with low-pressure steam emptying pipe, the upper end of deaerator low-pressure emptying is connected with negative pressure pipe, and the end of negative pressure pipe away from low-pressure steam emptying pipe is connected on the inlet end of steam absorption ejector suction chamber.Compared with prior art, the utility model is by using condensate recovery water pump to extract condensate in condensate recovery water pool, pressurized to 0.5-0.6Mpa, transported to steam absorption ejector nozzle, as jet source, form negative pressure in steam absorption ejector suction chamber, steam absorption ejector suction chamber is connected with transformation deaerator low-pressure steam emptying, the negative pressure generated in steam absorption ejector suction chamber, the low-pressure steam emptying of transformation deaerator is absorbed into steam absorption ejector suction chamber and water carries out heat transfer, mass transfer, condenses into water, to achieve the purpose of recovery.
Owner:ANHUI QUANSHENG CHEM

A special electrostatic precipitator for sintering machine head converted into a bag filter

PendingCN122499580Awith MarsFunctional
This invention relates to the field of industrial dust removal technology, and in particular to a special electrostatic precipitator converted to a bag filter for sintering machine heads. It includes a collector for capturing sparks and large particles, an inlet connected to a dust collector inlet duct, and an outlet connected to a middle chamber with an internal flue gas filtration structure. The collector contains a labyrinth-type airflow distribution device, a dust hopper at the bottom of the collector, a dust hopper at the bottom of the middle chamber, and an upper chamber at the top of the middle chamber. The upper chamber is connected to a clean air emission system and a backflushing system. This special electrostatic precipitator for sintering machine heads features spark and large particle capture, preventing filter bag burning; anti-condensation function to prevent equipment corrosion; high dust removal efficiency and strong operational stability; space-saving design; wider applicability; shorter construction period; lower investment; higher cost-effectiveness; and low operating and maintenance costs. It is suitable for various flue gas environments and can be used in new or retrofit projects.
Owner:BEIJING RUIDA HONGXIN TECH CO LTD

Prefabricated cabin cable connection structure

ActiveCN224653133UAvoid moisture damageavoid corrosion
This disclosure relates to the field of prefabricated cabin cable connection structures. One embodiment of this disclosure provides a prefabricated cabin cable connection structure, which includes: a filling sealing sleeve and a plurality of protective tubes interconnected, one of which is connected to one end of the filling sealing sleeve. Both external and internal cables are connected to the filling sealing sleeve. A docking assembly is disposed within the filling sealing sleeve, and a protective fixing assembly is disposed on the protective tubes. The docking assembly includes a sealing core disposed within the sealing sleeve, and a plurality of conductive blocks are disposed within the sealing core and fixed within the filling sealing sleeve. External and internal connectors are respectively inserted and connected to both ends of the filling sealing sleeve, and the external and internal connectors are respectively connected to the external and internal cables. This technical solution solves the technical problem of poor protection and easy leakage in the prior art, which seriously threatens the safe operation of equipment inside the cabin.
Owner:TANGSHAN DONGTANG ELECTRIC CO LTD

A chemical liquid heater

ActiveCN224718954Umeet stringent requirementsQuick response to temperature adjustment needs
The utility model discloses a kind of chemical liquid heaters, it is related to semiconductor chemical liquid heating equipment technical field, including base and two mutually parallelly arranged heating boxes, two outer sides of each heating box are symmetrically provided with aluminum plate, the aluminum plate of two sides of heating box is mutually connected fixed, and heating box is fixed on base;Two inner walls of each heating box are provided with heat conduction sheet, and each aluminum plate is provided with refrigeration and heating sheet, refrigeration and heating sheet heat or cool the chemical liquid in heating box by electricity, and switch heating or cooling state by switching current direction;The scheme uses the refrigeration and heating sheet of switchable current direction, can heat and can also actively cool, solve the problem that traditional device needs natural cooling after excessive heating, time-consuming and interrupt production, cooperate with the real-time monitoring and closed-loop control of temperature sensor, can quickly respond temperature adjustment demand, significantly improve production efficiency, meet the stringent requirements of semiconductor field to chemical liquid temperature.
Owner:SUZHOU SHIJUN MICROELECTRONICS CO LTD

A steam delivery pipeline leak detection system

The application provides a steam delivery pipeline leakage detection system, which comprises a metal conducting rod fixedly connected to the outer wall of a steam delivery pipeline, a sensor connected to the metal conducting rod, a signal analyzer electrically connected to the sensor, and a DCS control center electrically connected to the signal analyzer, and the sensor is used for collecting the vibration sound signal of the metal conducting rod. The steam delivery pipeline leakage detection system of the application can accurately and timely determine the leakage and the position of the leakage point by using the metal conducting rod connected to the steam delivery pipeline to transmit the vibration sound generated by the intense friction between the leakage medium and the pipeline wall, and the sound signal is not obviously attenuated in the transmission process due to the solid medium transmission, the transmission distance is long, and the sound signal is not easily interfered by other signals, the false positive rate of the leakage detection is effectively reduced, the operation and maintenance cost of the steam delivery pipeline is significantly reduced, and the industrial safety is improved.
Owner:NINGXIA JIUTONG SHENGDA ENERGY CO LTD

Composite corrosion and scale inhibition water treatment agent and preparation method thereof

The application relates to a composite type corrosion and scale inhibition water treatment agent, which is obtained by in-situ copolymerization of phosphono carboxylic acid copolymer after modification of nitrogen-doped carbon quantum dots on the surface of attapulgite as a carrier. The application has the beneficial effects that: the attapulgite is used as the carrier, can be used as a grafting bridge to load the carbon quantum dots on the surface and in-situ generate the phosphono carboxylic acid copolymer, and has a synergistic effect; the nitrogen-doped carbon quantum dots have rich amino, carboxyl and hydroxyl functional groups on the surface, make it difficult for calcium carbonate microcrystals to gather or interfere with the normal growth of the crystals to inhibit scale crystal generation, have high stability, are coated with zinc ions, improve the antibacterial property of the material, are modified on the surface of the attapulgite, have excellent adsorption performance, and can effectively remove organic matters, heavy metals and the like in water; the phosphono carboxylic acid copolymer is in-situ generated on the surface of the attapulgite, has a good compounding effect, has a good effect on corrosion inhibition, and has good corrosion inhibition performance.
Owner:JIANGSU JIANLIN ENVIRONMENTAL PROTECTION TECH CO LTD

Connecting structure for outdoor tent structural framework

The utility model discloses a connecting structure for an outdoor tent structure framework, which comprises a connecting piece, a rain shielding piece and a plurality of connecting rods, the connecting rods are arranged on the side surface of the connecting piece and hinged with the connecting piece, the connecting rods are arranged at intervals, the distances between the adjacent connecting rods are the same, and the connecting rods are used for connecting a support framework of a tent; the rain sheltering piece is arranged above the connecting piece and used for sheltering the connecting piece from rain; according to the tent, the structure of the connecting piece is improved, the umbrella-shaped rain sheltering piece is additionally arranged at the top of the connecting piece, the rain sheltering piece is in threaded connection with the connecting piece through the threaded rod, the rain sheltering piece can prevent rainwater from spraying the top end of the tent, and therefore the phenomenon of water seepage or water dripping at the top of the tent is avoided; in addition, the rain sheltering pieces can prevent rainwater from spraying the hinge points of the connecting pieces and the connecting rods so as to prevent the hinge points of the connecting pieces and the connecting rods from rusting or being corroded by rainwater, and therefore the service life of the tent is prolonged.
Owner:XINHONGWEI INT CAMPING EQUIP MFG CO LTD

Corrosion-resistant electric power fitting

The utility model relates to the technical field of electric power fittings, in particular to a corrosion-resistant electric power fitting, which comprises an upper clamping plate and a lower clamping plate, an upper side plate is mounted on the outer surface of the upper clamping plate, an adaptive clamping assembly is mounted at the lower end of the upper side plate, and a guide assembly is mounted on the top surface of the upper clamping plate; the adaptive clamping assembly comprises an elastic column, the elastic column is installed on the lower end surface of the upper side plate, and a lower side plate is installed at the end, away from the upper side plate, of the elastic column. The limiting columns can automatically move downwards by installing the springs, if the upper clamping plate and the lower clamping plate are in a stressed state, the limiting columns can ascend in the stabilizing cylinders, and therefore the clamping size of the upper clamping plate and the clamping size of the lower clamping plate can be changed, and when a cable is installed between the upper clamping plate and the lower clamping plate, the limiting columns can move downwards automatically. And at the moment, the limiting column moves upwards, so that the upper clamping plate and the lower clamping plate can stably and adaptively clamp the cable.
Owner:NANJING YALI ELECTRICAL

Lithium-rich manganese-based positive electrode material, preparation method thereof and lithium ion battery containing lithium-rich manganese-based positive electrode material

The invention provides a lithium-rich manganese-based positive electrode material, a preparation method thereof and a lithium ion battery containing the lithium-rich manganese-based positive electrode material, and belongs to the field of lithium ion batteries. The chemical formula of the lithium-rich manganese-based positive electrode material is xLi < 2 > MnO < 3 >. (1-x) LiTMO2, 0 lt, xlt; 1, TM is selected from Ni, Co and Mn; the lithium-rich manganese-based positive electrode material comprises a monoclinic Li2MnO3 phase and a rhombic LiTMO2 phase, the content of the monoclinic Li2MnO3 phase is sequentially reduced from inside to outside, the content of the rhombic LiTMO2 phase is sequentially increased from inside to outside, and a spinel phase layer is arranged on the surface of the lithium-rich manganese-based positive electrode material. The lithium-rich manganese-based positive electrode material prepared by the method has the advantages of high thermal stability, high compactness and high cycle performance.
Owner:BEIJING UNIV OF TECH

Heat exchange device and refrigeration system

The utility model discloses a heat exchange device and refrigerating system, heat exchange device includes heat exchange mechanism, and heat exchange mechanism includes shell, heat exchanger, wet membrane and fan module, wherein, the shell is equipped with ventilation passage, and the ventilation passage is equipped with air inlet and air outlet, heat exchanger sets up in ventilation passage, wet membrane sets up in air inlet, and fan module sets up in air outlet. In the flowing process, the airflow is cooled first by the wet membrane, and the cooled airflow cools the heat exchanger and the medium flowing in the heat exchanger. The wet membrane is located at the air inlet side of the heat exchanger, so the wet membrane can pre-cool the heat exchange airflow. Water only moistens the wet membrane and does not spray on the heat exchanger fins, so the fins are not corroded.
Owner:SHENZHEN ENVICOOL TECH

Measurement and control method and measurement and control device for hydrogen sulfide corrosion prevention of oil well

The invention discloses a measurement and control method and a measurement and control device for preventing hydrogen sulfide corrosion of an oil well, and relates to the technical field of environmental protection. A stabilization method that a temperature sensor and a liquid level sensor are used for detecting the excessive amount of output zinc carbonate in the working environment of a medicament storage tank, a monitoring method that a 5G data transmission gateway is used for transmission and a central control system is used for monitoring the content of hydrogen sulfide are adopted, the injection amount of the medicament is comprehensively controlled and adjusted, and corrosion of hydrogen sulfide to the wall of an oil casing is prevented; corrosion and permeation to a gathering and transportation pipe network and equipment are prevented, the service life of the whole system from the well bottom to the gathering and transportation pipe network is prolonged, huge maintenance funds are reduced, and a new way for preventing hydrogen sulfide corrosion is developed for an oil field.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

A strong magnetic force button

The utility model discloses a strong magnetic force button relates to button technical field, including female buckle and sub button, is equipped with the mounting groove on female buckle, and the strong magnet is bonded in the mounting groove, and is equipped with iron quality protruding on sub button, and iron quality protruding inserts the strong magnet in mounting groove and will iron quality protruding adsorb fixed, and is equipped with V type folding plate on female buckle and sub button, and V type folding plate is used for installing female buckle and sub button at the bag mouth of suitcase, can cooperate with the pincers pressure technology through setting V type folding plate, realizes quick installation, and eliminates the insufficient place of the seam line and riveting technology, and the hardness of V type folding plate is improved through setting the metal ceramic wear -resisting layer, avoids the scratch and the corrosion, can disperse the pincern pressure through setting temporary flexible high polymer protection film, and the indentation is left in flexible high polymer protection film, and there is no residue after peeling, avoids the indentation and leaves on V type folding plate.
Owner:QUANZHOU JUNXING HARDWARE PRODUCTS CO LTD

Highway bridge facilitating water drainage

ActiveCN224620419UDrainage Structure ImprovementEffective drainage structure
This utility model discloses a highway bridge with convenient drainage, comprising a beam body and concrete and asphalt layers arranged sequentially from bottom to top on the beam body. Drainage ditches are provided on both sides of the beam body, with a filter layer at the top of the drainage ditches. A water collection trough of a certain height is reserved above the filter layer. Multiple drainage holes are spaced along the length of the bridge on the filter layer, with filter plugs inside the drainage holes. A drain pipe is provided at the bottom of the drainage holes, with the outlet of the drain pipe extending to the pier foot and connecting to a collection pool. This utility model has a simple structure, high ease of construction, short construction period, and low construction cost. It ensures good drainage effect and is very easy to clean, greatly reducing cleaning costs. The addition of a rainwater collection pool at the pier foot of the highway bridge enables rainwater recycling, which is environmentally friendly and prevents foundation corrosion at the pier foot, thus improving the service life of the bridge.
Owner:GUIZHOU TONGYUAN HIGHWAY SURVEY & DESIGN CONSULTING CO LTD

A high-efficiency processing water-based ink production stirring mixing device

The utility model provides a kind of water-based ink production stirring mixing equipment of high efficiency processing, it is related to ink production stirring technical field, including support, stirring barrel is installed on the support, vertical fixed mounting is installed in the one side of support, mounting box is provided on the stand, rotation is provided with the shaft on the mounting box, driving mechanism is provided in the mounting box, the driving mechanism is connected with the shaft and drives the rotation of the shaft, the shaft rotation is installed in the mounting box, the shaft is provided with scrape and stir component, the scrape and stir component is arranged in the stirring barrel.The utility model is scraped by stirring paddle and bottom scraper collaborative work, while stirring ink, the material deposited in the bottom of barrel is scraped, prevent the material of barrel bottom from long-term accumulation and affect mixing uniformity.Ladder type arrangement's side wall scraper covers the full height of barrel wall, effectively removes the ink attached on barrel wall, avoid material waste, prevent ink residue and lead to equipment corrosion.
Owner:ANQING YITU INK TECHNOLOGY CO LTD

Molded case circuit breaker based on Internet of Things

The utility model belongs to the technical field of circuit breakers, and particularly relates to a molded case circuit breaker based on the Internet of Things. The circuit breaker comprises a circuit breaker body and further comprises a sealing mechanism, an end protection piece and a fixing piece, U-shaped installation notches are formed in wiring positions of the two ends of the circuit breaker body, limiting sliding grooves are formed in the two opposite sides of the installation notches, and the two sides of the sealing mechanism are limited in the limiting sliding grooves in a sliding mode; the sealing mechanism is detachably connected with the circuit breaker main body through a fixing piece, and a wire is arranged in the end protection piece in a penetrating mode. According to the circuit breaker device, the wiring end of the wire is protected in a hidden mode through the end protection piece, aging and corrosion caused by wind and sunlight are avoided, dustproof protection is conducted on the wiring position of the circuit breaker through cooperation of the end protection piece and the sealing mechanism, and therefore the stability and reliability of the circuit breaker device are effectively improved, and the service life of the circuit breaker device is prolonged.
Owner:QUZHOU ENG TECH SCHOOL (QUZHOU TECHNICIAN COLLEGE)

Cable wire duct for photovoltaic power generation

The utility model relates to a cable wire duct for photovoltaic power generation, which belongs to the technical field of cable wire ducts, and comprises a duct body and a bayonet socket fixedly connected to one end of the duct body, a plurality of groups of limiting rods are fixedly connected in the duct body, fireproof parts are attached to the adjacent sides of each group of limiting rods, and the fireproof parts are fixedly connected with the bayonet socket. The top of the groove body is connected with a groove cover through an inserting assembly, and heat dissipation holes are formed in one side of the groove body. According to the utility model, through cooperative use of the fireproof separator plate, the fireproof bag and the organic plugging material, the organic plugging material tightly wrapping the outer surface of the cable can form a physical barrier, thereby preventing moisture, dust, corrosive gas and the like from invading the surface of the cable, preventing an insulating layer from being damped and aged or a metal conductor from being oxidized and rusted, and prolonging the service life of the cable; and the arrangement of the fireproof partition plate and the fireproof bag can prevent fire spreading and smoke generated by fire from corroding other parts of the cable when the cable is on fire, so that the cable is well protected.
Owner:GUANGDONG CHENYU ELECTRIC POWER DESIGN CONSULTING CO LTD

Lithium nickel manganese acid cathode material, preparation method thereof, cathode and battery

The application relates to the technical field of battery materials. Disclosed are a lithium nickel-manganese acid positive electrode material, a preparation method thereof, a positive electrode and a battery. The lithium nickel-manganese acid positive electrode material comprises a base material and a first coating layer and a second coating layer successively coated on the surface of the base material; the chemical general formula of the base material is Li(Li a Ni b Mn c Fe d Sb e )O 4‑x , wherein a+b+c+d+e=2, 0<=x<=0.2, 0<=a<=0.1, 0.4<=b<=0.5, 1<=c<=1.5, 0.1<=d+e<=0.4; the first coating layer comprises NbTi(PO4)3, and the mass ratio of the first coating layer to the base material is 0.1-5:100; the second coating layer comprises a carbon material, and the mass ratio of the second coating layer to the base material is 0.1-5:100. The lithium nickel-manganese acid positive electrode material provided by the embodiment of the application has excellent electrochemical performance.
Owner:YIBIN LIBODE NEW MATERIAL CO LTD

Anti-skid water-permeable concrete pole

This utility model discloses an anti-slip permeable concrete pole, specifically relating to the field of concrete pole technology. It includes a base and a concrete pole fixedly connected to the top of the base. A climbing assembly is provided on the outer side of the concrete pole. The climbing assembly includes two anti-slip sleeves adapted to the outer side of the concrete pole. A first connecting block and a second connecting block are fixedly connected to both ends of each anti-slip sleeve. The two anti-slip sleeves cooperate to form a protective sleeve on the outer side of the concrete pole. The two adjacent first and second connecting blocks are fixedly connected to the concrete pole with bolts. This utility model, by setting up the climbing assembly and permeable mechanism, provides support for both hands and feet during climbing, forming stable support points and improving climbing efficiency. Simultaneously, the anti-slip sleeves can form an externally guiding and internally draining drainage system, significantly improving permeability and effectively preventing moisture or corrosion inside the pole due to poor drainage.
Owner:CHANGZHOU TENGHUI ELECTRIC POWER EQUIP CO LTD

Environment-friendly cleaning agent for degreasing metal surface

PendingCN122147339AAvoid meaningless diffusion lossesshorten the cleaning cycleDiethylene glycol monobutyl etherMetallic materials
The present application relates to the technical field of metal material chemical cleaning, and discloses an environment-friendly cleaning agent for degumming of a metal surface, comprising: tert-butyl hydrogen peroxide, diethylene glycol monobutyl ether, polyoxyethylene polyoxypropylene copolymer with a multi-branched structure, and deionized water, wherein the diethylene glycol monobutyl ether forms an associated structure with the tert-butyl hydrogen peroxide through hydrogen bonds; after the cleaning agent penetrates into the gap between the oxide film and the gum layer on the metal surface, the Lewis acid center of the oxide film competitively cuts the hydrogen bonds, induces in-situ decomposition of the tert-butyl hydrogen peroxide to release oxygen, and the interface pressure generated by the oxygen converts chemical energy into normal mechanical work, realizes whole peeling of the gum layer from the interface root, suppresses diffusion loss of the solvent in the gum layer body phase, and shortens the cleaning period without damaging the metal matrix.
Owner:SHANGHAI JIANAIRANG NEW MATERIAL TECHNOLOGY CO LTD

An electro-polymerized conductive polymer modified aluminum current collector, and a preparation method and application thereof

This invention provides an electropolymer-modified aluminum current collector, its preparation method, and its application, relating to the field of aluminum foil current collector technology. By modifying the current collector surface, it primarily addresses the interface problem between the current collector and the active material, thereby improving the performance of lithium-ion batteries. This invention uses an aluminum foil current collector as the anode, a graphite plate as the cathode, and an acidic solution of a conductive polymer monomer as the electrolyte. Anodizing electropolymerization is performed using a constant current or constant voltage method, followed by washing and drying to obtain the electropolymer-modified aluminum current collector. The conductive polymer monomer is at least one of aniline, thiophene, and pyrrole; the concentration of the conductive polymer monomer in the electrolyte is 0.1-1.0 mol / L; and the polymerization time is 5-10 min. This invention effectively reduces the contact resistance between the current collector and the active material, improves the bonding strength between the coating and the substrate, and enhances the corrosion resistance of the current collector, showing promising application prospects.
Owner:GUIZHOU UNIV +1

Ammonia slip control apparatus and control method for a polymer denitration system

The application provides a kind of high molecular denitration system ammonia escape control equipment and control method, it is related to the technical field of removing nitrogen oxides in flue gas.The method applies the equipment, the equipment includes: denitration reactor, with the flue gas inlet pipe and the flue gas outlet pipe, the flue gas inlet pipe and the flue gas outlet pipe are sequentially provided with spray grid and reaction zone;Agent pipeline is connected with the spray grid;Adjusting mechanism;Ammonia escape detection mechanism is used to detect the ammonia escape in the flue gas outlet pipe;Control mechanism is used to control the adjusting mechanism according to the detection result of the ammonia escape detection mechanism, to adjust the flow size in the agent pipeline.When ammonia escape detection mechanism detects that the ammonia content in the flue gas outlet pipe is higher than the preset threshold, the flow in the agent pipeline is reduced by controlling the adjusting mechanism through the control mechanism, the ammonia escape is reduced, and the blockage and corrosion of the denitration reactor and downstream equipment caused by the generation of ammonium bisulfate due to water vapor, SO3 and ammonia escape in flue gas are avoided.
Owner:ZHONG ENERGY SAVING (JINTANG) ENVIRONMENTAL PROTECTION ENERGY CO LTD

Organic amine modified HMS molecular sieve and its application in carbon dioxide capture

The application discloses an organic amine modified HMS molecular sieve and application thereof in carbon dioxide capture, and specifically relates to the following steps: first, preparing mesoporous molecular sieve HMS, which contains two kinds of pore structures, 4.5-8.0 nm and 11.5-17.5 nm respectively, and a single wide diffraction peak is presented at 2theta=2.6 degrees in X-ray powder diffraction; then, grafting amino silane on the surface of the mesoporous molecular sieve HMS; and finally, immersing the mesoporous molecular sieve HMS in an organic amine solution to obtain a multilevel organic amine modified HMS molecular sieve. The synthesis method is simple, the carbon dioxide adsorption efficiency is high, and the thermal stability is good.
Owner:NORTHWEST UNIV