4results about How to "Unique porous structure" patented technology

The invention discloses a preparation method of a high-conductivity solid electrolyte and application of the high-conductivity solid electrolyte in a lithium metal battery, and belongs to the technical field of lithium batteries. Kevlar fibrils are dissolved in a potassium hydroxide / dimethyl sulfoxide mixed system, aramid nanofiber dispersion liquid is obtained through deprotonation and serves as a polymer additive, then lithium salt serves as filler and is added into a polymer electrolyte, and the high-conductivity solid electrolyte is obtained through stirring. The aramid nanofiber dispersion liquid is used as a functional additive of a polymer, so that the problem of volume expansion of the lithium metal negative electrode in the charging and discharging process can be relieved, and Li < + > preferential transmission can be realized. The conductivity of the solid electrolyte can be further improved by adding the lithium salt as a filler into the polymer. The solid electrolyte is applied to assembly of a solid-state lithium metal battery, and the electrochemical performance of the battery is improved.

This utility model relates to the field of automotive fabric technology, specifically to a 3D-MESH fabric for car audio systems. It includes a bottom cover, a top cover, and a fabric material disposed between the two. The fabric material comprises a MESH layer and a metal mesh fabric, which are bonded together using PA mesh hot melt adhesive. The metal mesh fabric includes memory foam fabric, a metal mesh, and carbon fiber fabric. Both ends of the metal mesh are bonded to the memory foam fabric and the carbon fiber fabric. The metal mesh provides better protection, preventing damage to the internal components of the audio system from external objects. The memory foam fabric improves the fit and stability of the audio system installation, reducing vibration and friction noise caused by vehicle bumps. Finally, the carbon fiber fabric enhances the stability of the audio structure, reduces deformation caused by vibration, helps maintain accurate sound quality, and its good thermal conductivity helps dissipate heat, improving system reliability and lifespan.

The utility model discloses a top and bottom separation type packing box of square shell battery relates to battery packing box technical field, including bottom shell, top shell, the both sides of bottom shell and top shell are provided with recess, and recess coincides and forms side hand hole, the both sides of top shell top are provided with hand to hold the hole, and the both sides of top shell top are fixed with support buckle frame, the utility model discloses packing box is by bottom shell and top shell cooperation constitutes, wherein bottom shell and top shell buckle in the process, and positioning column corresponds to insert into corresponding positioning hole, can bear certain tension and shearing force, prevent bottom shell and top shell accidental separation in the transportation or use process, and the overall connection strength and stability of packing box are strengthened, after bottom shell and top shell buckle, and the handle is moved to the down, makes the hook corresponding buckle on the lock catch, realizes further buckle locking, thereby enhances the firmness of bottom shell and top shell connection, makes square shell battery storage more safe and reliable.

The invention discloses a preparation method and application of a carbon-doped boron nitride catalyst for acetylene hydrochlorination. The method comprises the following steps: 1) mixing: heating in an oil bath, and dissolving a boron source, a nitrogen source and a carbon source in a mixed solvent of ethanol and water; 2) drying: drying the solution obtained in the step 1) to obtain a precursor; and 3) calcining: calcining the precursor obtained in the step 2) in an inert atmosphere to obtain the carbon-doped boron nitride catalyst. The prepared catalyst has the characteristics of ultrahigh specific surface area, rich porous structure and defect sites, controllable conductivity and the like, and can be applied to the process of efficiently preparing vinyl chloride through acetylene hydrochlorination. The preparation method is simple, the cost is low, the performance is excellent, the industrialization difficulty is small, the process repeatability is good, a mercury catalyst in an existing calcium carbide process is expected to be replaced, the problem of mercury emission pollution is solved, and a new technical route is provided for mercury replacement of the catalyst in the acetylene hydrochlorination process.