11results about How to "Solve conductivity problems" patented technology

This application discloses a negative electrode and its related manufacturing method and product, belonging to the field of zinc-ion batteries. The negative electrode includes: a metal current collector; and an adhesion layer attached to the surface of the metal current collector through a chemical reaction; wherein the adhesion layer is composed of at least two metal elements. This negative electrode can effectively suppress dendrite growth and side reactions such as hydrogen evolution, thereby improving the cycle stability of the battery.

This invention relates to a carbon fiber reinforced ultra-high performance concrete (UHPC) and its preparation and application. This concrete constructs a multi-level coupled conductive path, "trunk-secondary," by synergistically introducing magnetite and carbon fiber into a UHPC matrix. The carbon fiber provides a highly sensitive piezoresistive response framework, while the magnetite particles, through their semiconductor interface properties, are dispersed within the fiber network, effectively bridging local breakpoints and suppressing resistance abrupt changes caused by uneven fiber dispersion or microcrack propagation. This significantly improves the overall stability and repeatability of the conductive network and enhances the mechanical properties of the concrete. By adjusting the carbon fiber content, the resistivity, flowability, and mechanical properties of the concrete can be flexibly controlled, allowing the material to adapt to the needs of different engineering scenarios. It is particularly suitable for fields with stringent requirements for antistatic properties, conductivity, and structural strength, such as electronic factories, electromagnetically sensitive areas, explosion-proof locations, and intelligent structures, demonstrating high engineering practical value.

The utility model belongs to conductive material technical field discloses a kind of substrate surface conductive polyaniline coating continuous processing device, for processing conductive polyaniline coating to substrate surface, comprising: DBD plasma processor, including plasma power supply, plasma power supply output end is connected with discharge electrode, plasma power supply ground end is connected with ground electrode, ground electrode and discharge electrode are placed in parallel, and gap for substrate passing is left between ground electrode and discharge electrode, DBD plasma processor is used to carry out hydrophilization and roughening treatment to substrate surface;Liquid storage system, liquid storage system includes three liquid storage tanks, three liquid storage tanks are respectively filled with aniline monomer solution, doped acid solution and oxidizing agent solution;The problems existing in the prior art that the preparation process is complex, the coating uniformity and the conductivity are not good are solved, the processing efficiency and the quality of the conductive polyaniline coating are effectively improved, and the continuous production of environmental protection and controllable morphology is ensured.

This application relates to the field of metal surface treatment, specifically disclosing a fingerprint-resistant galvanized sheet and its production method. The fingerprint-resistant galvanized sheet includes a substrate, a galvanized layer formed on the surface of the substrate, and an inorganic passivation layer and an organic composite coating sequentially coated on the surface of the galvanized layer. The organic composite coating includes an acrylate-polysiloxane modified resin system and a hybrid conductive network filler dispersed in the resin system. The hybrid conductive network filler is composed of two-dimensional nano-graphene and one-dimensional conductive material in a mass ratio of 5:1 to 15:1, and the surface of the hybrid conductive network filler is grafted with a silane coupling agent. The organic composite coating is distributed in a transverse gradient on the surface of the galvanized sheet, with a film weight of 0.8-1.0 g / m² in the central region and 0.6-0.8 g / m² in the edge region. The fingerprint-resistant galvanized sheet of this application exhibits excellent fingerprint resistance and corrosion resistance, while also achieving high conductivity.

This invention relates to a lithium iron phosphate composite electrode material and its preparation method, belonging to the field of electrode material technology. The preparation method of this invention significantly improves the electrochemical performance of the material through a wet-mixing precursor, modified carbon nanotube composite, and double-layer carbon coating process. The modified carbon nanotubes are treated with melamine, potassium hydroxide, and boric acid to achieve nitrogen / boron co-doping and surface functionalization, constructing efficient electron transport channels and shortening the lithium-ion diffusion path through a microporous structure; their high aspect ratio and improved graphitization effectively alleviate charge-discharge volume expansion and ensure high-temperature structural stability. The double-layer carbon coating consists of a polydopamine inner layer and a glucose-derived carbon outer layer. The inner layer strengthens the interface bonding through chemical bonding and guides uniform lithium-ion diffusion, while the highly conductive outer carbon layer provides a fast electron transport channel and mechanical protection, synergistically optimizing ion / electron transport efficiency.

The application provides a silicon-carbon negative electrode material and a preparation method and a lithium ion battery thereof, the silicon-carbon negative electrode material is a grape-like secondary particle, the secondary particle is composed of primary particles, carbon nanotubes and graphite, the surface of the primary particle is connected with the graphite through the carbon nanotubes; the primary particle is a double-coated silicon-based material, the inner core of the primary particle is a silicon-based material, the inner coating layer is an oxide layer, and the outer coating layer is a carbon coating layer. The application effectively enhances the conductivity of the silicon-carbon negative electrode material by designing the grape-like silicon-carbon negative electrode material, solves the problems of particle separation and poor conductivity in the expansion process, and the material has a high degree of disorder, which is beneficial to improving the fast-charging performance of the material; in addition, the double-coated silicon-based material surface can improve the initial efficiency while reducing the residual of the surface alkali, and can effectively alleviate the expansion problem of the silicon-based material, reduce the erosion of the electrolyte to the surface of the silicon-based material, and further enhance the cycle performance of the material.

The application discloses a conductive wire core aluminum alloy and a manufacturing method and application thereof, relates to the technical field of conductive wire core materials, and comprises the following components by percentage of weight: A 0.003-1.465 wt%, rare earth elements 0.001-7.670 wt%, aluminum 88.005-99.999 wt% and inevitable impurities; the conductive wire core aluminum alloy and the manufacturing method and application thereof precisely control the proportion of iron, copper and magnesium alloy elements, especially control the total content of iron and the mass ratio of copper and magnesium, and combine the grain refining effect of rare earth elements, so that the alloy has high strength and high conductivity, solves the problem that the strength and conductivity of a traditional alloy are restricted by each other, and is suitable for large-scale production.

The utility model discloses center coiling equipment for PTFE (Polytetrafluoroethylene) proton exchange membrane materials, which relates to the technical field of new material processing equipment and comprises a base, one end of the upper surface of the base is fixedly connected with an electric appliance control cabinet, and an auxiliary traction mechanism is fixedly mounted in the middle of one side of the upper surface of the base. The surface friction mechanism is installed at the top end of the auxiliary traction mechanism, the cutting mechanism is installed outside the surface friction mechanism, and the coiling mechanism is installed on the upper surface of the auxiliary traction mechanism. A hidden upturning structure is adopted, operation and maintenance space are not hindered, potential safety hazards are eliminated, the defect that the maintenance position is compact is overcome, and the problems of conductive copper ring wiring and short circuit faults in the prior art are solved through the winding mechanism and the fact that two winding shafts of the winding mechanism are both of a hidden independent driving structure.

The invention discloses a thermomechanical treatment method of a copper-chromium-zirconium alloy strip, which comprises the following steps: weighing casting raw materials according to a preset ratio range, and putting the casting raw materials into a smelting furnace for smelting and casting to obtain a cast ingot, the casting raw materials comprising a Cu raw material, a Cr raw material, a Zr raw material and impurities; carrying out heating treatment and hot rolling treatment on the cast ingot to obtain a hot-rolled blank, and carrying out primary solid solution treatment on the hot-rolled blank to obtain a primary solid solution blank; primary cold rolling treatment is carried out on the primary solid solution blank, intermediate heat treatment is carried out on a primary cold-rolled strip, secondary solid solution treatment is carried out on an intermediate strip, and a secondary solid solution blank is obtained; secondary cold rolling treatment is conducted on the secondary solid solution blank, and a secondary cold-rolled strip is obtained; and the secondary cold-rolled strip is subjected to aging treatment, and the copper-chromium-zirconium alloy strip is obtained. By designing the combination of multi-stage solid solution and specific intermediate heat treatment, a precipitated phase is induced to be precipitated in a finer and more dispersed form in the cold rolling process, and the strength and conductivity of the alloy are improved.

This invention belongs to the technical field of industrial magnesium alloy materials, specifically a heat-resistant magnesium alloy with high strength, toughness, high conductivity, and brazability, and its preparation method. By mass percentage, the magnesium alloy comprises: Zn 5.0%–8.0%, Mn 0.5%–1.5%, Cu 0.5%–3.5%, Ag 0.05%–3.5%, Ca 0.01%–1.5%, with the balance being Mg. The magnesium alloy material prepared by the method combined with specific processes has a tensile strength ≥360MPa, elongation ≥10%, conductivity ≥19MS / m, tensile strength ≥200MPa at 200℃, and a tensile strength decrease of ≤10% after brazing at 350–450℃. Furthermore, it can be brazed into complex cavity components integrating load-bearing and conductive functions, enabling service in high-temperature environments up to 200℃. It has significant application value in electronic signal and microwave signal transmission components in aerospace, aviation, transportation, and weaponry fields.

The invention relates to a carbon-doped high-entropy lithium manganese iron phosphate positive electrode material, a preparation method thereof and a battery, the material is of a secondary sphere structure formed by agglomeration of primary particles, carbon nanotubes are distributed among crystal boundaries of the primary particles to form a three-dimensional conductive network, the expression is LiaMnxFeyMzPO4C, and M is three or more transition metals. According to the preparation method, a two-step coprecipitation method is adopted, primary particle slurry is formed under specific conditions, then the carbon nanotubes are introduced, and primary particles are agglomerated and grow into secondary spheres by taking the primary particles as cores through regulation and control of reaction conditions. Through the synergistic effect of high-entropy doping and an internal carbon skeleton, the technical problems of manganese dissolution, poor conductivity and low compaction density are synchronously solved, and the prepared positive electrode material has high conductivity, high compaction density and excellent cycle stability, and is suitable for a high-performance lithium ion battery.