4results about How to "Effective passivation" patented technology

The application belongs to the technical field of functional coating and specifically provides a black phosphorus heterojunction water-blocking and oxygen-blocking coating and a preparation method thereof, which comprises the following steps: 1) mixing chloroform and DMF, adding bulk BP for ultrasonic treatment, collecting supernatant by centrifugation, and drying to obtain BP nanosheets; dispersing the BP nanosheets into a mixture of ethanol, water and SDBS, adding ammonia hydroxide, HCHO and NiCl2 after stirring, and then performing a reaction by heating, collecting the solid by centrifugation, and washing to obtain a base material; 2) drying the base material, placing it into a sealed container containing silicone oil, and performing a reaction by heating; transferring it into chloroform containing 1,12-dodecylamine for a reaction; then transferring it into acetone for immersion, taking it out, blowing dry, and obtaining a barrier material; 3) transferring the barrier material to the surface of a substrate to obtain a coating. The coating prepared by the application can effectively block the erosion of oxygen and water molecules on the black phosphorus heterojunction, so that the black phosphorus heterojunction can maintain better infrared detection performance and stability.

The application discloses a method for rapidly converting sludge into nutrient soil and the prepared nutrient soil, and belongs to the fields of sludge treatment and agronomy technology. Steps of the method for rapidly converting sludge into nutrient soil include: stirring and mixing hydrogen peroxide solution and ammonium sulfate, filtering after stirring and reacting under an acidic condition, washing, and drying to obtain ammonium persulfate; mixing calcium hydroxide and citric acid gypsum and then placing the mixture in a tube furnace to perform pyrolysis, so as to obtain a composite catalyst; adding the composite catalyst and the ammonium persulfate solution into sludge, stirring and reacting, and then the nutrient soil can be obtained. The macromolecules in the sludge are converted into small-molecule structures such as fulvic acid by the advanced oxidation technology, and the heavy metals in the sludge are passivated, so that the value of the nutrient soil is improved.

The application relates to the technical field of new energy safety monitoring and microelectronic sensor technology, and particularly relates to a hydrogen-sensitive sensor material and a preparation method and use method thereof, the preparation method comprising the following steps: adding tungsten source, palladium source and silver source into a mixed solvent of dimethylformamide and ethanol, then adding a high-molecular binder, continuously stirring at normal temperature until the solute is fully dispersed and uniform, and obtaining a precursor solution; loading the precursor solution into a syringe with a stainless steel nozzle, spraying the nanoscale fiber bundle from the syringe in an electrostatic spinning machine to a receiving plate covered with aluminum foil paper; collecting the nanoscale fiber bundle on the receiving plate, placing and drying, then placing in a muffle furnace, and performing programmed temperature calcination in an air atmosphere to obtain Pd-Ag / WO3 nanofiber powder; and dissolving the Pd-Ag / WO3 nanofiber powder with ethanol to complete the preparation. The application greatly simplifies the preparation process and guarantees high batch consistency.

The application provides a kind of aromatic asymmetric lithium salt, lithium battery electrolyte and lithium battery, the aromatic asymmetric lithium salt has the structure general formula shown in formula I.The aromatic asymmetric lithium salt provided by the application has higher dissociation constant, ionic conductivity and lithium ion transference number in carbonate-based and ether-based electrolyte.Due to the structural symmetry of the lithium salt anion, the corrosion of the lithium battery positive electrode current collector aluminum foil is greatly reduced, the solubility of the decomposition product formed in the electrolyte is reduced, the surface of the aluminum foil can be effectively passivated, the corrosion behavior of the sulfonimide organic lithium salt on the positive electrode current collector under high temperature and high pressure is inhibited, and the stable operation of the battery is ensured.