94 results about "Anodic protection" patented technology

The invention discloses an aluminum pipe, a heat exchanger and application thereof, and belongs to the technical field of heat exchange materials. The aluminum pipe comprises an aluminum pipe base material layer and a zinc impregnation layer arranged on the surface of the aluminum pipe base material layer. The zinc impregnation layer has a zinc concentration gradient which is gradually reduced from outside to inside; the maximum zinc concentration of the zinc impregnation layer is 0.01 to 10 weight percent; the thickness of the zinc impregnation layer is larger than 0 and smaller than or equal to 400 micrometers. The zinc impregnation layer is formed on the surface of the aluminum pipe base material layer, corrosion can be limited from expanding to the inner layer, longitudinal expansion of corrosion is avoided, pitting corrosion is inhibited, the zinc content distribution of the zinc impregnation layer at different zinc impregnation depths can be controlled by controlling the maximum zinc concentration and thickness of the zinc impregnation layer, and the corrosion resistance of the aluminum pipe is improved. The zinc impregnation layer has a good anodic protection effect on the aluminum pipe, pitting corrosion extension is effectively inhibited, the corrosion resistance of the aluminum pipe is improved, and the service life of the aluminum pipe is prolonged.

The invention relates to the technical field of offshore pipeline body construction, and discloses a structure for preventing pipeline rotation during pipeline laying and a construction method.The structure comprises a pipeline launching frame used for launching a pipeline body and a rail piece arranged above the pipeline launching frame, and a plurality of fixed portal frames are arranged at the top of the pipeline launching frame; the inner wall of the fixed portal frame is connected with the top of the rail piece, a plurality of slidable pulley blocks are installed on the rail piece, anchor chains are connected to the bottoms of the pulley blocks, the bottom ends of the anchor chains are connected to the top of the pipeline body, and a plurality of buoys are installed on the surface of the pipeline body. According to the structure for preventing the pipeline from rotating in the pipeline laying process and the construction method, when the pipeline body slides down along the rail piece, rotation of the pipeline body is restrained through constraint of the anchor chain and the pulley block; the buoyancy balance provided by the buoy and the symmetrical sacrificial anode protection blocks on the two sides are used for balancing the gravitational torque after the pipeline body enters the sea, and rotation of the pipeline body is restrained.

The invention discloses a bidirectional anti-seismic high-energy-consumption shear-resistant anticorrosion self-healing anchoring system and a construction method thereof. The system is composed of a tension anticorrosion anchoring end, a bidirectional anti-seismic high-strength dead-load shear-resistant device, an embedded anticorrosion anchoring end and two perforated anchor rods. According to the system, the prestress loss of the anchor rods is reduced through the two-way anti-seismic protrusions, and the ductility and the energy dissipation capacity of the anchor rods are improved through the deformation energy dissipation blocks; the anchor rod is divided into two parts, the shear resistance of the anchor rod is greatly enhanced through multi-layer reinforcement, and the anchor rod can still work normally under the extreme condition when the anchor rod is damaged by shearing; the durability of the anchoring system is improved through multiple anti-corrosion measures such as anti-corrosion oil, sacrificial anode protection and self-repairing microorganism grouting; a comprehensive intelligent monitoring system is arranged, water pressure, vibration and stress sensors are integrated, and real-time monitoring of the anchoring state is achieved. The anchoring system provided by the invention realizes the functions of long-term corrosion resistance, dead load, high energy consumption, large deformation, high strength, high toughness, shear resistance, non-failure in shearing and bidirectional seismic resistance in complex geology and occurrence environments.

Disclosed is an all solid-state battery (ASSB) comprising an anode layer, an anode protective layer, a solid electrolyte layer, and a cathode layer in the order, wherein the protective layer comprises a first sublayer adjacent to the anode layer; and a second sublayer between the SE layer and the first sublayer, wherein each sublayer comprises a carbonaceous material, and the second sublayer contains a lithium alloyable material with a content greater than that in the first sublayer. In some embodiments, the ASSB comprising the anode protective layer exhibits an improved electrochemical performance.

The utility model relates to the technical field of sacrificial anode protection, more specifically, a kind of petroleum pipeline thickening anticorrosion sacrificial anode discharge tube. Including pipe body, pipe body is coaxial integrated structure, pipe body includes thickening section, left end thin tube section and right end thin tube section, the wall thickness of thickening section is greater than the wall thickness of left end thin tube section and right end thin tube section, thickening section is set between left end thin tube section and right end thin tube section, left end thin tube section and right end thin tube section length are equal, symmetrically set. The device is a kind of new sacrificial anode discharge tube with optimized structure, efficient protection, stable installation and reliable strength. The utility model is mainly applied to the aspect of petroleum pipeline thickening anticorrosion sacrificial anode discharge tube.

A composition for coating a negative electrode dam according to one embodiment of the present disclosure includes an aqueous binder, wherein the aqueous binder includes one or two or more compounds selected from the group consisting of polyacrylamide (PAM), polyvinyl alcohol, polyacrylic acid, polyethylene glycol, and polyacrylonitrile. In the composition for coating a negative electrode dam according to one embodiment of the present disclosure, the surface tension is high to the level of the negative electrode slurry, thereby suppressing the occurrence of a fat-edge in the negative electrode. Furthermore, the dam coating layer formed from the composition for coating a negative electrode dam shortens the sliding length of the negative electrode active material layer, thereby reducing the risk of NP-ratio inversion of the lithium secondary battery.

The present invention relates to the technical field of anti-corrosion treatment for the surface of steel, and specifically, to an anti-corrosion treatment process for the surface of bridge steel. It includes: S1. Pretreating the substrate by using plasma activation and sandblasting processes; S2. Spraying a Zn-Al-based quaternary alloy onto the surface of the substrate through a spraying and deposition process to form an inner coating for sacrificial anode protection; processing inverted conical micropores on the surface of the inner coating by using femtosecond laser; S3. Electrostatically spraying a fluorocarbon resin composite coating, spraying it twice. After two sprays, the micropores are filled and a dense barrier layer is formed. Through the characteristic micropore process of the inner coating and the secondary spraying process of the outer coating, the present invention forms micropore interlocking to enhance mechanical bonding. At the same time, the sacrificial anode of the inner coating continuously provides cathodic protection, and the self-healing function of the outer coating repairs damages in real time; the graphene oxide and fluorocarbon resin of the outer coating form a dense anti-permeation layer. Secondly, the micropore-filled gradient-cured resin reduces the interfacial residual stress and effectively inhibits the crack propagation caused by dynamic loads.

The invention discloses a temperature-resistant sacrificial anode containing a zinc-indium-tin alloy and a preparation method of the temperature-resistant sacrificial anode. The temperature-resistant sacrificial anode comprises an anode body and a 304 stainless steel outer net arranged outside the anode body in a sleeving mode. The anode body is made of zinc-indium-tin-aluminum alloy, and the zinc-indium-tin-aluminum alloy comprises the following chemical components in percentage by weight: 3.5-6.0% of zinc, 0.04-0.10% of indium, 0.05-0.15% of tin, 0.8-2.0% of magnesium, less than or equal to 0.15% of iron and less than or equal to 0.01% of copper. The temperature resistance and corrosion resistance are excellent, the anode body adopts the zinc-indium-tin-aluminum alloy in a specific ratio, the content of each metal element and the content of impurities are accurately controlled, and the service life of the anode body is prolonged. The anode is adaptive to a severe environment of a high-temperature oil-water well, the anode protection efficiency is improved by more than one time compared with a conventional anode, long-acting corrosion prevention in a high-temperature oil-water well sleeve can be effectively realized, and the service life of the sleeve is prolonged; and the anode body is sleeved with the 304 stainless steel outer net, and the 304 stainless steel outer net and the anode body are firmly connected in an elastic clamping or welding mode.

The utility model relates to the field of pipeline anti-corrosion protection, and discloses a geothermal energy pipeline anti-corrosion protection device which comprises an installation sleeve and an installation block, the installation sleeve and the installation block are rotationally connected, a sleeve is fixedly connected to the ends, away from each other, of the installation sleeve and the installation block, and an anode protection mechanism is arranged at the bottom of the sleeve. A clamping mechanism is arranged in the mounting sleeve, the clamping mechanism comprises a shell and a control rod, the control rod penetrates through and is slidably mounted on the inner wall of the shell, the control rod is fixedly connected with a piston plate, and a piston of the piston plate is mounted on the inner wall of the shell. According to the clamping device, by rotating the mounting block, the rotating block below the pressing block rotates clockwise, the geothermal energy pipe is clamped and supported, meanwhile, the rotating block can rotate in a small range along with the radian of the surface of the metal pipe, the geothermal energy pipes with different diameters can be clamped, a matched clamping device does not need to be replaced, and the applicability is improved.

The invention relates to the technical field of oil well casing pipe column systems, and provides an anti-corrosion oil well casing pipe column system which is designed and installed to form a first sacrificial anode bent rod and a second sacrificial anode bent rod of a sacrificial anode protector function and is used for solving the problem of local corrosion of a casing pipe. Maintenance and replacement of a first sacrificial anode bent rod and a second sacrificial anode bent rod can be achieved, the anti-corrosion period of an oil well casing pipe column system is prolonged, practicability is better, the service cycle is longer, and the device comprises a main body pipe, an outer connecting pipe sleeve and an inner connecting pipe sleeve. The outer connecting pipe sleeve is fixedly connected to the top end of the main body pipe, internal threads and external threads are arranged in the outer connecting pipe sleeve and outside the inner connecting pipe sleeve respectively, a follow-up sleeving part is installed outside the outer connecting pipe sleeve, a first side through hole and a second side through hole are formed in the main body pipe, a first step pipe is fixedly connected in the first side through hole, and a second step pipe is fixedly connected in the second side through hole. And a second stepped pipe is fixedly connected in the second side through hole.

The invention provides an optical fiber composite submarine cable connector device which comprises a connecting cylinder, an optical cable connector box, a middle connector and connecting flanges arranged at the two ends of the connecting cylinder, each connecting flange is provided with an anchoring device, and each anchoring device comprises an anchoring base with a first conical connecting part and an anchoring locking piece installed on the anchoring base. The anchoring locking piece is provided with a second conical connecting part; a stop flange is further arranged in the connecting cylinder, and an anode block is arranged on the outer surface of the connecting cylinder. Through the cooperation of the first conical connecting part and the second conical connecting part, the conical surface generates a self-locking effect under the action of tension, the anchoring contact area and friction force are increased, the steel wire is prevented from slipping, and the reliability in a large-tension scene is improved; the stop flange fixes the position of the cable core, thereby preventing the internal structure of the joint from being damaged due to the suspension and shaking of the cable core in the transportation and installation process, and improving the mechanical stability of the joint. The anode block delays seawater corrosion of the metal shell through a sacrificial anode protection method, and the service life of the connector is prolonged.

A method of baking a detector, the method comprising: placing a mid-wave infrared detector in an environmental chamber, wherein the environmental chamber is opaque. The mid-wave infrared detector comprises an anode, a guard terminal, and a cathode. The method further comprising connecting the anode to the cathode in a short circuit configuration, heating the environmental chamber to a bake temperature selected in the range of 60 to 70 degrees Celsius, and maintaining the detector in the environmental chamber for a period selected in the range of 72 hours to 240 hours.

The application discloses a neodymium-iron-boron permanent magnet surface anticorrosion coating and a preparation method thereof, and the preparation method comprises the following steps: pretreating the neodymium-iron-boron permanent magnet, depositing an aluminum-based alloy coating on the surface of the pretreated neodymium-iron-boron permanent magnet through arc spraying, and performing vacuum heat treatment and coating of a sealing agent, wherein the temperature of the vacuum heat treatment is 400 DEG C to 600 DEG C, so that the neodymium-iron-boron permanent magnet surface anticorrosion coating is obtained. The neodymium-iron-boron permanent magnet surface anticorrosion coating of the application can greatly improve the bonding strength and the anticorrosion performance through the construction of a composite protection system of a "metallurgical bonding diffusion layer (bottom layer) + Al sacrificial anode protection layer (middle layer) + sealing agent barrier layer (surface layer)", which has important industrial value for improving the service life of the neodymium-iron-boron magnet in severe environments and widening the application scenarios of the neodymium-iron-boron magnet.

A kind of pipeline's sacrificial anode boost power cathodic protection system, in order to solve the problem that pipeline protection distance is shorter when pipeline without external power supply is often used in sacrificial anode protection, cannot realize synchronous power-off test and cathodic protection and corrosion parameter remote monitoring, detection and other automation management, the technical scheme adopted is: using DC / DC boost module to increase the voltage between sacrificial anode and grounding body as power supply, to improve the protection potential of pipeline and realize each automation management function.Pipeline protected by sacrificial anode boost power cathodic protection system can be adjusted to the upper limit of protection potential to increase the length of cathodic protection of pipeline under the premise of meeting cathodic protection criteria, and realize the automation management functions such as synchronous on-off test, cathodic protection and corrosion parameter remote monitoring, detection of pipeline without external power supply cathodic protection with low cost. Figure 1 is the abstract drawing of the present application.

The utility model discloses an auxiliary anode for a circulating water pipeline of a power plant, and relates to the field of auxiliary instruments of the power plant, in particular to the auxiliary anode for the circulating water pipeline of the power plant, which comprises an anode sacrifice structure mounted on the pipeline, the anode sacrifice structure comprises a sleeve and a plurality of anode bodies placed in the sleeve, the sacrificial anode comprises a sleeve, an anode body is arranged in the sleeve, a protective cover is arranged at the bottom of the sleeve, a conductor used for electrifying the anode body is arranged in the middle of the protective cover, and a pressing assembly used for keeping the anode body in contact with the conductor is arranged in the sleeve. The problems that the circulating water pipeline of the power plant is not protected by the anode, the pipeline is corroded in the process, and the replacement speed of the sacrificial anode has direct influence on the pipeline are solved.

A lithium-sulfur battery may include a cathode, an anode structure positioned opposite to the cathode, a separator, and an electrolyte. In some instances, the anode structure may include an artificial solid-electrolyte interphase (A-SEI) that may form on and within the anode structure. A protective layer may form within and on the A-SEI, and may include exposed carbon surfaces formed by coalescence of several wrinkled graphene nanoplatelets with one another. Metal-containing substances may be decorated on and / or attached with at least some exposed carbon surfaces and regulate flow of lithium (Li+) cations within the lithium-sulfur battery and correspondingly moderate one or more of a plating rate or a de-plating rate of lithium onto the anode structure. The separator may be positioned between the anode structure and the cathode. The electrolyte may be dispersed throughout the cathode and in contact with the anode structure.

This invention belongs to the field of seawater pipeline cathodic protection potential measurement technology, and relates to a device and method for measuring the inner wall protection potential of seawater pipelines based on zinc plug anodes. The main structure includes the seawater pipeline under test and the zinc plug anode installed on it, as well as a measurement module connected to both. The measurement module has a built-in trigger, an anode protection circuit, a potential measurement circuit, and a controller. The trigger is connected to the anode protection circuit or the potential measurement circuit through the anode terminal. Under normal operation, the seawater pipeline under test is directly connected to the zinc plug anode, and the zinc plug anode provides cathodic protection for the seawater pipeline under test. When the potential measurement signal is triggered manually or automatically, the measurement module disconnects the electrical connection between the zinc plug anode and the seawater pipeline under test, immediately uses the zinc plug anode as the reference electrode and the seawater pipeline under test as the working electrode, and connects to the potential measurement circuit. After a delay and depolarization, the protection potential value of the seawater pipeline under test is read at a set timing point. After the test is completed, the module is reset.

According to the novel corrugated damping connection technology suitable for heat distribution pipeline flange connection, the technology is mainly a corrugated damping device, the technology can effectively cope with special use scenes of an offshore working platform, the stability and safety of a pipeline system are improved, a corrugated damping body is of a stainless steel flexible structure, and therefore the service life of the corrugated damping device is prolonged. The sacrificial anode protection shell can efficiently absorb multidirectional vibration and impact caused by complex working conditions of an offshore platform, the stress concentration of the pipeline and the fatigue risk of a flange connecting point are remarkably reduced, and therefore the service life of the pipeline is prolonged, and the sacrificial anode protection shell innovatively adopts a magnesium alloy or zinc alloy lining layer and a conductive net-shaped structure; and in a salt mist humid environment, an anode material is preferentially corroded, cathode protection current is continuously output, electrochemical corrosion of a key connecting part is effectively inhibited, an outer-layer metal shell synchronously resists physical corrosion, the corrosion rate is obviously delayed through double protection, and the risk of medium leakage is fundamentally eradicated.

The invention discloses an ecological pavement system for a green road and a percolation drainage method, and relates to the technical field of ecological pavement systems of roads, the ecological pavement system comprises a permeable pavement layer, a salt-resistant percolation assembly and a roadbed, the ecological paving system for the greening road further comprises a snow-melting agent salt intercepting assembly, a salt-resistant percolation assembly and a salt buffering and collecting assembly. The metal connecting piece salt corrosion prevention assembly is arranged, a polytetrafluoroethylene corrosion prevention sleeve physically isolates direct contact between a salt-containing water body and the metal clamping piece, a fluororubber sealing ring strengthens sealing of the connecting position, and meanwhile a zinc alloy sacrificial anode protection block is corroded preferentially due to lower electrode potential; cathode protection is provided for the metal clamping piece through the conductive copper sheet; therefore, electrochemical corrosion of a salt-containing water body to the metal connecting piece can be prevented, the service life of the metal connecting piece is greatly prolonged, loosening and displacement of the paving module caused by rusting failure of the connecting piece are avoided, and the stability of a road structure and the traffic safety are guaranteed.

Embodiments described herein relate to a method of forming a sub-pixel. The method includes depositing an intermediate layer material over a substrate and an anode. The anode is disposed over the substrate. A separation structure material is disposed over the intermediate layer material. A portion of the separation structure material is removed to form separation structures. A first structure material and second structure material are deposited over the substrate. A portion of the first structure material and the second structure material are removed to form a first structure and a second structure. A portion of the intermediate layer material is removed to form an intermediate layer. An OLED material, a cathode, and an encapsulation layer are deposited over the intermediate layer. A resist is patterned in a first sub-pixel. A portion of the OLED material, the cathode, and the encapsulation layer exposed by the second resist are removed.

The preparation method comprises the following steps that the neodymium-iron-boron permanent magnet is pretreated, an aluminum-based alloy coating is deposited on the surface of the pretreated neodymium-iron-boron permanent magnet through electric arc spraying, and the neodymium-iron-boron permanent magnet is obtained through vacuum heat treatment and hole sealing agent coating. Wherein the temperature of the vacuum heat treatment is 400-600 DEG C, and the neodymium-iron-boron permanent magnet surface anti-corrosion coating is obtained. According to the neodymium-iron-boron permanent magnet surface anti-corrosion coating, by constructing a composite protection system of the metallurgical bonding diffusion layer (bottom layer), the Al sacrificial anode protection layer (middle layer) and the hole sealing agent barrier layer (surface layer), the bonding strength and the anti-corrosion performance of the neodymium-iron-boron permanent magnet surface anti-corrosion coating can be greatly improved; the method has important industrial value for prolonging the service life of the neodymium-iron-boron magnet in a severe environment and widening the application scene of the neodymium-iron-boron magnet.

Embodiments described herein relate to a method of forming a sub-pixel. The method includes depositing an intermediate layer material over a substrate and an anode. The anode is disposed over the substrate. A separation structure material is disposed over the intermediate layer material. A portion of the separation structure material is removed to form separation structures. A first structure material and second structure material are deposited over the substrate. A portion of the first structure material and the second structure material are removed to form a first structure and a second structure. A portion of the intermediate layer material is removed to form an intermediate layer. An OLED material, a cathode, and an encapsulation layer are deposited over the intermediate layer. A resist is patterned in a first sub-pixel. A portion of the OLED material, the cathode, and the encapsulation layer exposed by the second resist are removed.

The invention relates to the technical field of transformers, and discloses an outdoor lightning protection type transformer which comprises an elastic buffer type connecting mechanism and a telescopic zinc block contact mechanism. The longitudinal hollow shell is fixedly installed under the rotating ball head, and the interior of the longitudinal hollow shell is in a hollow state. The zinc block is placed in the longitudinal hollow shell and can abut against the bottom of the rotating ball head. The second spiral spring can generate upward elastic pressure on the zinc block. According to the outdoor lightning protection type transformer, a sacrificial anode protection mode is utilized, a zinc block is used for carrying out effective anti-rust protection measures on the lightning rod body, and therefore the effective service life of the lightning rod body is prolonged, in addition, the lightning rod body and the sealing cover plate are connected in a buffering mode, and when the lightning rod body vibrates, the lightning rod body can be prevented from being damaged. The damage degree of vibration to the connecting part is reduced, so that the effective service life of the lightning rod body is further prolonged.

The invention relates to the technical field of coating preparation, in particular to a formula of a cold zinc spraying anticorrosive coating. The high-performance zinc-aluminum alloy material is prepared by mixing the following raw materials in parts by weight: 1400 to 2700 parts of zinc powder, 1100 to 1500 parts of zinc silicate, 1300 to 2500 parts of aluminum powder, 1100 to 2100 parts of acrylic resin, 1600 to 2000 parts of graphene oxide, 1500 to 1800 parts of polycarbonate and 1000 to 1300 parts of ethylene glycol monomethyl ether. The invention has the following beneficial effects: the zinc powder is used as a main functional filler, can play a role in sacrificial anode protection on the substrate metal under the conditions of coating damage and the like, and delays the corrosion process of the substrate metal through preferential corrosion of the zinc powder; zinc silicate contributes to improving the structural stability of the coating, meanwhile, the zinc silicate and zinc powder have a synergistic effect in an anti-corrosion system, the protection effect on a substrate is enhanced, part of micro-pores in the coating can be filled, and invasion of a corrosive medium is blocked; and the aluminum powder can further improve the oxidation resistance of the coating and the adhesive force to substrate metal, and can participate in formation of a stable protective film layer to a certain extent, so that the overall corrosion resistance is improved.

The utility model relates to the technical field of steel bar rust prevention, and discloses a steel bar rust prevention device with a cathode protected by a sacrificial anode, which comprises two bottom plates, horizontal I-shaped steel brackets are fixedly mounted at the tops of the two bottom plates, and a vertical I-shaped steel bracket is mounted between the two horizontal I-shaped steel brackets; the two sets of supporting and protecting assemblies comprise anode protection metal supporting angle steel installed on the opposite sides of the two horizontal I-shaped steel supports, and an anode protection metal supporting bracket is fixedly installed at the end, away from the anode protection metal supporting angle steel, of the anode protection metal sliding support. The vertical I-shaped steel support can effectively support the steel bars during rust prevention, so that the stability of the steel bars during rust prevention is improved, meanwhile, the subsequent treatment cost of the steel bars due to corrosion can be greatly reduced, the structure is simple, the steel bars only need to be connected with protected metal, and the installation efficiency of the device is greatly improved.

The application relates to an electronic anode protection method, device and water heater. The method comprises the following steps: switching the working mode of a driving device of an anode rod into an input detection mode, detecting and acquiring the initial voltage of a metal inner container by the anode rod in the input detection mode; acquiring an output voltage according to the initial voltage; switching the working mode of the driving device into an output voltage mode, and controlling the driving device to output the output voltage to the anode rod. The application can be switched between the input detection mode and the output voltage mode, and can automatically realize the detection function of water quality conductivity, so that the production cost can be reduced and the accuracy can be improved.

The invention relates to the technical field of automobile steel parts, and discloses an aluminum-silicon coating hot-formed steel plate, an aluminum-silicon coating hot-formed steel part with sacrificial anode protection and excellent coating performance and a preparation method of the aluminum-silicon coating hot-formed steel part. The aluminum-silicon coating hot-formed steel plate comprises a steel base plate, at least one surface of the steel base plate is plated with an aluminum alloy coating, and the aluminum alloy coating is arranged on the surface of the steel base plate. The surface of the aluminum alloy plating layer is further coated with a surface treatment layer. The aluminum alloy coating comprises the following chemical elements in percentage by weight: not less than 8% and not more than 12% of Si, not more than 3% of Fe and the balance of aluminum and inevitable impurities; the surface treatment layer contains a copper element; the copper element in the surface treatment layer is selected from one or more than two of copper, copper oxide, copper hydroxide, copper acetate and copper citrate. The aluminum-silicon coating hot-formed steel part has an excellent sacrificial anode protection effect, the painted paint is excellent in adhesive force and good in corrosion resistance, and the problem of paint stripping after painting caused by insufficient alloying is solved.

This application relates to the field of hot-air expansion part forming and manufacturing technology, and particularly to a method for preparing highly corrosion-resistant hot-air expansion parts. The method includes: hot-air expanding non-zinc-based coated hot-formed steel to obtain a heat-treated substrate; quenching the heat-treated substrate to obtain a quenched hot-air expansion part; hot-dip coating the quenched hot-air expansion part with a zinc-based coating using a zinc-containing plating solution to obtain a hot-air expansion part containing a zinc-based coating; wherein the hot-dip coating temperature is proportional to the thickness of the quenched hot-air expansion part; and heat-treating the hot-air expansion part containing the zinc-based coating to obtain a zinc-based coated hot-air expansion part. This preparation method, through full-process control of "substrate pretreatment → precise hot-dip coating → coating structure optimization," synergistically optimizes the formation quality, structural stability, and bonding performance with the substrate of the zinc-based coating, improving the corrosion resistance of the hot-air expansion part from three dimensions: physical barrier, sacrificial anode protection, and structural reinforcement.

Anode-protective layer for inhibiting growth of dendrites from an anode. In some embodiments, an anode-protective layer of this disclosure includes a coating comprising a polymer system, one or more salts dispersed within the polymer system, and ceramic oxide particles dispersed within the polymer system. In some embodiments, the polymer system includes two or more polymers, with one polymer containing fluorine and at least one other polymer containing nitrogen. In some embodiments, the coating is applied to a porous material, such as a porous separator. In some embodiments, the anode comprises at least one active metal, such as lithium, and the salt(s) comprise the active metal. Electrochemical cells and secondary batteries that include an anode-protective layer are also disclosed.

The application discloses a crown ether polymer and a preparation method and application thereof, and relates to the technical field of material preparation. The preparation method of the crown ether polymer provided by the application comprises the following steps: mixing HHT (4,4',4'',4'''-(6,7,9,10,17,18,20,21-octahydrodibenzo[B,K][1,4,7,10,13,16]hexaoxacyclooctadecine-2,3,13,14-tetrayl) tetrakisbenzaldehyde) and DBD (2,5-diamino-1,4 benzodithiophene) to prepare a reticular crown ether polymer with rich crown ether and thiazole structures. When the crown ether polymer is used as a light anode protective layer, the active specific surface area of an electrode surface can be improved, and Cl ‑ penetration into the light anode can be prevented, so that the active specific surface area of the light anode cannot be reduced, and the cycle performance of the light anode cannot be reduced. Meanwhile, the crown ether polymer has semiconductor characteristics, and can improve the photo-generated carrier separation efficiency of the light anode.