9 results about "Silver fluoride" patented technology

The invention discloses a polymer solid electrolyte membrane and application thereof. The polymer solid electrolyte membrane is prepared from 5-15 parts by mass of a polymer, 4-10 parts by mass of a lithium salt, 3-6 parts by mass of a material for constructing a lithium-loving and lithium-phobic layer, 0.5-1.5 parts by mass of a plasticizer and 30-50 parts by mass of a solvent. And the material for constructing the lithium-loving and lithium-phobic layer is one of N-methyl-2, 2, 2-trifluoroacetamide, zinc bis (trifluoromethanesulfonamide) and silver bis (trifluoromethanesulfonamide), and one of zinc fluoride and silver fluoride, and the material for constructing the lithium-loving and lithium-phobic layer is one of N-methyl-2, 2, 2-trifluoroacetamide, zinc bis (trifluoromethanesulfonamide) and silver bis (trifluoromethanesulfonamide). The lithium-loving and lithium-phobic layer is synchronously constructed on the surface of the lithium metal negative electrode, uniform deposition of lithium metal is promoted, growth of lithium dendrites is inhibited, contact between the lithium metal negative electrode and a solid electrolyte interface is improved through uniform generation of the SEI layer, and the cycling stability and safety of the lithium metal negative electrode are remarkably improved.

This invention provides a silver fluoride composite silicon-carbon material, its preparation method, and its application, relating to the field of silicon-carbon material technology. The preparation method includes: mixing a silicon-carbon matrix, a silver source, and a carbon source in a liquid environment, followed by evaporating the solvent to obtain a composite precursor; heat-treating the composite precursor in an inert atmosphere at 400℃-600℃ to obtain a composite intermediate; and fluorinating the composite intermediate to obtain the silver fluoride composite silicon-carbon material. This invention, by coating the surface of the silicon-carbon matrix with a buffer layer containing nano-silver fluoride particles, helps to constrain the volume expansion of silicon during cycling and maintain the integrity of the electrode structure. Furthermore, the heterojunction formed between the buffer layer and the silicon-carbon matrix can reduce interfacial impedance and induce the formation of a dense lithium fluoride-based SEI film, effectively improving structural stability. Simultaneously, the formation of C-F bonds enhances interfacial bonding and promotes lithium-ion migration, contributing to improved cycling performance.

The application discloses a preparation method and application of N-trifluoromethyl secondary amine compounds, and belongs to the technical field of fine chemical industry. The preparation method of the N-trifluoromethyl secondary amine compounds provided by the application comprises the following steps: isonitrile is used as a reaction substrate, and the reaction is carried out under the action of iodine, silver fluoride and tert-butyl dimethyl silane to obtain the N-trifluoromethyl secondary amine compounds. Compared with the prior art, the preparation method of the N-trifluoromethyl secondary amine compounds avoids the use of irritating toxic gases such as fluorine gas, hydrogen fluoride gas and sulfur light gas, effectively improves the experimental safety, and the reaction raw materials are easy to obtain, the product is easy to separate, and the reaction condition is mild, so that the application is a safer, more efficient and milder new method for preparing N-trifluoromethyl secondary amine compounds.

The application discloses a method for synthesizing N-trifluoromethyl secondary amide compounds from benzoyl isothiocyanate. The method is characterized in that silver fluoride is added in a sealed anhydrous and oxygen-free tube, and then argon is replaced for three times; under the ventilation condition, benzoyl isothiocyanate and triethylamine hydrogen trifluoride are added, anhydrous tetrahydrofuran is used as a reaction solvent, and sufficient reaction is carried out at 25-35 DEG C to obtain corresponding N-CF3 amide compounds. The method is simple and safe in process operation, high in reaction conversion rate, economical and practical in raw materials, low in waste and friendly to environment, and does not need to treat additional organic solvents. The introduction of trifluoromethyl in the synthesized N-trifluoromethyl secondary amide compounds is expected to change the physical properties and chemical properties of some drugs, and can increase the efficacy and application range of some amide drugs.

The invention relates to an aqueous solution containing silver fluoride (AgF) having a pH of 4.0 to 5.3.

The invention discloses trifluorosucrose and a preparation method thereof, an atomization matrix, an electronic atomization device and a buccal product, and the preparation method comprises the following steps: in a first organic solvent, under the action of a first catalyst, sucralose and iodide are subjected to a first reaction to obtain triiodosucrose and chloride; in a second organic solvent, under the action of a second catalyst, triiodo sucrose and silver fluoride are subjected to a second reaction to obtain trifluorosucrose and silver iodide; wherein the reaction formula of the first reaction is as follows: nC12H19Cl3O8 + 3MIn-> nC12H19I3O8 + 3MCln; and the reaction formula of the second reaction is as follows: C12H19I3O8 + 3AgF to C12H19F3O8 + 3AgI. According to the preparation method of the trifluorosucrose, the trifluorosucrose can be prepared, compared with sucralose, the trifluorosucrose has better high temperature resistance, the sweetness of the trifluorosucrose is equivalent to that of the sucralose, and the trifluorosucrose can be used as a sweetening agent and is particularly suitable for application scenes in a high-temperature environment.

Methods and compositions for reducing silver stains on teeth treated using silver diamine fluoride are provided. The methods for removing stains comprise the steps of etching a stained area, the application of sodium hypochlorite, the application of hydrogen peroxide and the application of a remineralization solution to the stained area.

The invention discloses a 2-iodo-N-trifluoromethylimidazole derivative and a preparation method thereof, and belongs to the technical field of compound synthesis. The preparation method of the 2-iodo-N-trifluoromethylimidazole derivative provided by the invention is simple, convenient and efficient, aryl isonitrile or alkyl isonitrile which is easy to obtain is used as a starting raw material, under the synergistic effect of silver fluoride (AgF) and N-iodo-succinimide (NIS), the reaction can be rapidly completed through a one-step method, and a target product is efficiently obtained. The prepared 2-iodo-N-trifluoromethylimidazole derivative has excellent structural stability, the 2-position iodine atom in the structure can be used as a high-activity leaving group or reaction site, and various compounds with important value in the field of medicine can be further derived conveniently and efficiently through subsequent conversion reaction.

There is provided herein a thickened dental Caries Status Disclosing Solution comprising a water-based thickened silver fluoride composition comprising a thickening agent for use in the initial application of the thickened silver fluoride composition to a carious lesion followed by the subsequent application of a reducing agent solution for the visual analysis of the status of the carious lesion wherein the water-based thickened silver fluoride composition comprises nitric acid to stabilize the water-based silver fluoride composition. The thickened dental Caries Status Disclosing Solution can also be used to treat teeth that are sensitive to at least one of heat, cold, sweet, acid and tactile pressure to thereby reduce sensitivity.