4results about How to "Low electronegativity" patented technology

This invention relates to a volatile organic compound (VOC) adsorbent material and its preparation method. The method involves first modifying a 5A molecular sieve with lithium, followed by vanadium modification to obtain a Li-V-5A adsorbent material. Based on the total mass of the adsorbent material, the Li content is 0.8%–4.5%, and the V content is 0.2%–1%. The adsorbent material obtained by this invention, using a 5A molecular sieve as a matrix and modified to obtain the Li-V-5A adsorbent material, has advantages such as good adsorption effect on low-carbon hydrocarbons and strong resistance to sulfur poisoning, especially high adsorption and removal rate of ethane.

The application relates to a preparation method of a sodium ion battery positive plate, and belongs to the technical field of new energy batteries. The specific scheme comprises the following steps: step one, uniformly dispersing Prussian blue positive materials and organic solvents to obtain slurry A; the organic solvents comprise a combination of one or more of N-methyl pyrrolidone, polyvinyl pyrrolidone and nitriles; step two, adding a binder into the slurry A and uniformly stirring to obtain slurry B; step three, adding a conductive agent into the slurry B and uniformly stirring to obtain slurry C; removing bubbles from the slurry C and adjusting the viscosity to obtain slurry D; step four, coating the slurry D on a positive current collector, baking, rolling, cutting and obtaining the sodium ion battery positive plate. The application can prevent subsequent glue liquid from entering Prussian blue cavities, can effectively guarantee the adhesive glue amount attached to the surface of active materials, can prevent positive electrode cold pressing and formation demolding, and can solve the problem of the battery cell manufacturing process.

This invention relates to an iron-iron-phosphorus 3-point electrocatalyst with an asymmetric electronic structure and its application. The catalyst preparation method is as follows: zinc salt and iron salt are uniformly dispersed in a mixed solution of N,N-dimethylformamide and methanol, and 2-methylimidazole is added and uniformly dispersed in the same mixed solution to obtain a pale yellow powder. The pale yellow powder is uniformly dispersed in a methanol solution, and tannic acid solution is added and stirred to obtain a gray-green powder Fe@ZIF-8. Fe@ZIF-8 and p-phenylenediamine are dispersed in a tetrahydrofuran solution, and a phosphorus source and triethylamine are added to obtain polymer-coated Fe@ZIF-8. Fe@ZIF-8 is calcined to obtain a phosphorus-doped iron single-atom catalyst. The phosphorus-doped iron single-atom catalyst is ball-milled with iron salt and phthalocyanine to obtain an iron-iron-phosphorus 3-point electrocatalyst with an asymmetric electronic structure. This catalyst is applied to the air cathode reaction of a zinc-air battery.

This disclosure provides a method for preparing nanoparticles, the method comprising: mixing amino-functionalized polyethylene nanoparticles with nano-metal particles to obtain polyethylene nanoparticles with the nano-metal particles bound to their surface; mixing the polyethylene nanoparticles with the nano-metal particles bound to their surface with triethanolamine, hexadecyltrimethylammonium bromide, and tetraethoxysilane to obtain polyethylene nanoparticles coated with a mesoporous silica shell; and calcining the polyethylene nanoparticles coated with the mesoporous silica shell to obtain calcined particles. This disclosure also provides the nanoparticles prepared by this method and their use in the preparation of surface-enhanced Raman scattering (SERS) detection kits. The nanoparticles of this disclosure further mitigate the "protein crown" effect of SERS-labeled nanoprobes, improving the stability and accuracy of the Raman signal.