31results about How to "Avoid reunion situations" patented technology

The invention discloses high-conductivity lithium iron phosphate powder and a preparation method thereof. The preparation method comprises the steps as follows: 1) formation of precursor of high-conductivity lithium iron phosphate: a lithium hydroxide solution is stirred and mixed with phosphoric acid; a graphene oxide dispersion liquid is added and stirred; iron sulfate heptahydrate is added and stirred, and a uniform mixture is obtained; the mixture is filtered, washed and dried, and black powder, namely, the precursor of the high-conductivity lithium iron phosphate, is obtained; 2) formation of high-conductivity lithium iron phosphate powder: the precursor, obtained in the step 1), of high-conductivity lithium iron phosphate and lithium carbonate are subjected to ball milling and uniformly mixed, the mixture is calcined in the atmosphere of inert gas, and the high-conductivity lithium iron phosphate powder is obtained. The lithium iron phosphate powder prepared with the method has high conductivity, large specific surface area and higher compaction density, has the particle size of 0.5-1 mu m, has 1-5 layers of graphene and has the iron-phosphorous ratio of 0.95-1.05, and a produced pole piece has the surface resistance of 60 omega and has wide application prospects in the lithium ion battery field.

In the present invention, tetrabutyl titanate is hydrolyzed into titanium dioxide in the organic phase, and then interfacially polymerized into a titanium dioxide-doped polyamide reverse osmosis membrane, which not only ensures the uniformity of dispersion of titanium dioxide particles in the organic phase, but also makes the hydrolysis process and interface The polymerization process is separated to avoid the interaction between the two, and the alcohol-water mixture is used as the hydrolysis solution, the pH is adjusted to acidity and the low hydrolysis temperature is controlled to control the slow hydrolysis process of tetrabutyl titanate in the organic phase, ensuring The dispersion uniformity and dispersion concentration in the organic phase are improved, and finally the anti-fouling ability and water flux of the polyamide reverse osmosis membrane are effectively improved.

The invention discloses a form-controllable high-quality graphene powder and a preparation method thereof, belonging to the field of new materials. The invention uses the metal salt of the transition group as a template, utilizes a chemical vapor deposition process, and catalyzes the growth of graphene on the surface of the metal salt (reduced to metal) under suitable temperature and atmosphere conditions. The obtained graphene powder can retain or remove the substrate according to the needs of the application to form a graphene / metal-shell-core composite structure or a graphene hollow cavity structure. By adjusting the reaction parameters, the particle size and shape of the graphene powder can be adjusted. The metal salt and the corresponding etching acid solution can be recovered and recycled, and the whole production process only consumes a certain amount of electric energy and reaction gas. The invention has the advantages of simple process, low production cost and easy mass production. The prepared graphene has high crystalline quality, excellent thermal conductivity and electrical conductivity, and can be used as a filler in many fields.

The invention relates to the technical field of preparation of super-amphiphobic materials, and specifically provides a super-amphiphobic coating for catalysts and its preparation method and application. The super-amphiphobic coating contains uniformly distributed inorganic Nanoparticles, the high content of inorganic nanoparticles makes the surface of the coating have a strong degree of roughness, so that the prepared coating exhibits excellent super-amphiphobic properties. The invention also provides a preparation method of the super-amphiphobic coating. By spraying low-concentration particles for many times, all the nanoparticles are in a good dispersion state when sprayed onto the coating body. By heating the nanoparticles to the viscous fluidization temperature of the coating body, they are "embedded" and fixed on the coating body when they come into contact with the coating body, and then the whole coating is heated by cooling first. And ultrasonic treatment, so that the nanoparticles enter the coating body at the relative position of maintaining the dispersed state, thereby avoiding the agglomeration of the nanoparticles.

The invention relates to a display module and electronic equipment, and relates to the field of display technology. The technical problem to be solved is to solve the problem of agglomeration of charged particles on an electronic ink screen and to speed up the display response speed. The technical solution mainly adopted is: a display module, which includes: an upper substrate, the upper substrate is provided with a first electrode, the first surface of the upper substrate is provided with a plurality of arc-shaped protrusions arranged in a matrix; the lower substrate , the lower substrate is provided with a second electrode, the first surface of the lower substrate is provided with a plurality of arc-shaped grooves arranged in a matrix; an inverse emulsion; wherein, the first surface of the upper substrate and the first surface of the lower substrate A surface fit, each of the arc-shaped protrusions cooperates with one of the arc-shaped grooves to form a groove-shaped accommodation space, and the reverse emulsion is filled in the groove-shaped accommodation space. The display module provided by the invention can avoid the agglomeration of charged particles and accelerate the display response speed.