5results about How to "Good mechanical integrity" patented technology

The application provides a pore-forming agent for lithium ion batteries and a preparation method thereof, which comprises a wall material preparation step, a core material preparation step, a W / O type initial milk preparation step and a pore-forming agent for lithium ion batteries preparation step. The pore-forming agent preparation method is a new pore-forming agent synthesis route, which has the advantages of simple reaction steps, mild reaction conditions, high yield, low cost and environmental protection. The technology can accurately construct a uniform multi-level pore network by introducing the pore-forming agent into the electrode, significantly reduces the charge transmission impedance, effectively improves the fast charging capacity and high-rate discharge performance of the battery, greatly improves the electrode-electrolyte interface contact, and ensures the full use of the active material. The application also provides an application of the pore-forming agent for lithium ion batteries to lithium ion batteries. The application of the pore-forming agent for lithium ion batteries to the lithium ion batteries can improve ion conduction and improve the rate performance.

This invention discloses a sulfonic acid-based polyethylene oxide solid proton exchange membrane, its preparation method, and its application. The solid proton exchange membrane includes a porous support layer and a sulfonic acid-based polyethylene oxide proton conductor layer loaded on its surface and / or within its pores. The proton conductor layer is formed by reacting or compounding polyethylene oxide or a polymer containing polyethylene oxide segments with an acidic reagent containing sulfonic acid groups or capable of introducing sulfonic acid groups, and contains fixed acidic proton sites and ether oxygen segments. The preparation method involves dissolving the polyethylene oxide polymer in a solvent and adding an acidic reagent to form a precursor solution, coating it onto the porous support layer, and obtaining the solid proton exchange membrane by drying, curing, or heat treatment. This membrane can constitute a dry-state electrochemical hydrogen purification membrane electrode assembly, achieving selective extraction or purification of hydrogen from a hydrogen-containing gas mixture without adding liquid acidic electrolyte or externally humidifying the inlet gas. This invention can form a continuous composite membrane, verifying its structural components, dry-state proton conductivity, and hydrogen purification applications.

The invention discloses a phenolic resin microsphere-based porous carbon conductive composite material and a preparation method thereof, and belongs to the technical field of conductive materials. Phenolic resin microspheres with specific molecular weight and hydroxymethyl content are used as carbon precursors, nitrogen-doped carbon nanofibers are introduced to construct a continuous conductive network, a metal-ligand self-assembled mesoporous template agent is adopted to form ordered multilevel channels, and a skeleton structure is enhanced by virtue of a boric acid ester crosslinking aid. The preparation method comprises the steps of potential regulation and control dispersion of precursor slurry, alkaline steam aging forming and gradient pyrolysis carbonization in an inert atmosphere. The method avoids the use of strong corrosive reagents, and the process is environment-friendly. The obtained composite material has high specific surface area, excellent conductivity and good mechanical strength, effectively solves the technical problems that a traditional porous carbon material is disordered in pore structure, insufficient in conductivity and weak in mechanical property and is difficult to synergistically optimize, and has wide application prospects in the fields of supercapacitor electrodes, silicon-carbon negative electrodes and the like.

This utility model relates to the field of cable technology and provides a torsion-resistant cable, comprising: multiple conductors and a cross-shaped spacer, wherein the cross-shaped spacer is attached to the multiple conductors, a shielding layer is fixedly connected to the outer surface of the conductors, and a buffer layer is provided between the shielding layer and the cross-shaped spacer. It also includes: a reinforcing mesh, fixedly connected to the outer surface of the shielding layer; the multiple conductors are separated by the cross-shaped spacer to prevent them from tangling together and affecting the transmission of power signals; the shielding layer is fixedly connected to the outer surface of the conductors, and the shielding layer is made of copper foil, which has excellent conductivity and can effectively shield high-frequency electromagnetic interference; the buffer layer is provided between the shielding layer and the cross-shaped spacer, and the buffer layer is made of polystyrene foam, which has good shock absorption and cushioning performance, can absorb impact energy, and protect the internal conductors from damage; the reinforcing mesh can improve the flexibility of the cable body and prevent damage to the conductors.

The utility model provides a kind of electroreflective working electrode, the electrode includes substrate layer, the functional layer of metal material and the first stable layer of sulfide material, and first stable layer forms strong chemical bonding interface with functional layer by metal-sulfur bond. By constructing strong chemical bonding metal-sulfur bond, effectively solve the problem of weak interlayer adhesion, easy to peel off, significantly enhance the mechanical stability and interface integrity of electroreflective working electrode, thereby substantially prolong the service life and optical performance durability of electroreflective working electrode.