5results about How to "Reduce chalking" patented technology

The invention discloses a microporous carbon-coated core-shell nano composite material, a preparation method and application, and relates to the technical field of lithium batteries, and the preparation method comprises the following steps: uniformly dispersing silicon powder and graphite in a solvent to form a core material suspension; dopamine hydrochloride and hydrogen peroxide are added into the nuclear material suspension, polymerization reaction is carried out at the temperature of 60-85 DEG C, composite slurry is obtained, and the ratio of the total mass of the silicon powder and the graphite to the mass of the dopamine hydrochloride is 1: (0.1-0.5); carrying out spray drying treatment on the composite slurry to obtain precursor powder; sintering the precursor powder at high temperature to obtain a microporous carbon coated core-shell nano composite material; the microporous carbon-coated silicon / graphite core-shell nano composite material is prepared by adopting a polydopamine in-situ polymerization technology initiated by hydrogen peroxide and combining a subsequent spray drying and carbonization process, and the material has good rate capability, cycling stability, charge-discharge efficiency and low interface impedance.

The present application relates to the technical field of sodium ion battery negative electrode material, and specifically to modified hard carbon negative electrode material and its preparation method and application, the present application takes biomass waste oil tea shell as raw material, adopts sulfuric acid and phosphoric acid as dopant, carries out porosification and activation, obtains P, S double atom doping pre-carbonization porous carbon material after carbonization, takes tetraethyl orthosilicate as raw material to prepare nano SiO2 microspheres under catalysis, carries out carbonization after blending nano SiO2 microspheres and P, S double atom doping pre-carbonization porous carbon material, obtains modified hard carbon negative electrode material through pyrolysis reaction with magnesium powder at the same time of carbonization, the element doping in modified hard carbon negative electrode material provides more active sites for sodium ion storage, improves the theoretical capacity and conductivity of the material, and the nanoscale silicon powder reduces the pulverization phenomenon caused by volume expansion when silicon is used as the negative electrode material of sodium ion battery due to the special size effect, reduces the attenuation of battery capacity.

This invention relates to the field of anode materials, specifically to an antimony-based anode material, its preparation method, and a lithium-ion battery. The method involves preparing Schiff base-functionalized carbon quantum dots by adding a phosphorus source, an antimony source, and the Schiff base-functionalized carbon quantum dots to a reaction solvent, followed by a solvothermal reaction. This antimony-based anode material achieves a synergistic improvement in high specific capacity, long cycle life, excellent rate performance, and high structural stability, making it a highly promising anode material for lithium batteries, particularly suitable for high-energy-density, long-life lithium-ion batteries.

The invention relates to the technical field of waste gas treatment, and discloses a hazardous waste incineration flue gas efficient denitration device and method.The hazardous waste incineration flue gas efficient denitration device comprises a first tower body, a top tray is fixedly installed at the top of the first tower body, a spraying box is arranged on the side face of the first tower body, and the output end of the spraying box communicates with a heat exchanger; the heat exchanger penetrates through the top tray and is communicated with the first tower body, a denitration mechanism, a driving mechanism and an adjusting mechanism are respectively arranged in the first tower body, a front deacidification pool is arranged below the first tower body, a mixer is arranged in the front deacidification pool, a plurality of spray valves are arranged at the top of the mixer, and the spray valves are communicated with the first tower body. The input end and the output end of the front deacidification pool are respectively communicated with a waste gas channel and a bag-type dust collector, the bag-type dust collector is communicated with the spraying box, and the denitration mechanism is arranged, so that the first catalyst bed is movably arranged, the side surface of the first catalyst bed is provided with a corresponding heat discharge port, and when the temperature of the first catalyst bed is high, the first catalyst bed is subjected to heat dissipation treatment.

The application relates to the technical field of zinc oxide materials, and discloses zinc-based isomeric zinc oxide as well as a preparation method and application thereof. The zinc-based isomeric zinc oxide is used for ship antifouling paint, and the zinc-based isomeric zinc oxide comprises a crystal nucleus layer, the chemical general formula of the crystal nucleus layer is: [(ZnO) x (Si a , Mg b , Zn c , Ni d )Al2O 4z ] y , x=0.5-1.2, a=0.1-0.3, b=0.05-0.15, c=0.2-0.4, d=0.02-0.08, z=0.8-1.2, and y=0.9-1.1. The zinc-based isomeric zinc oxide contains zinc oxide phases and zinc-based spinel solid solution phases, the two phases form low-energy coherent interfaces through interface reconstruction, the release rate of zinc ions can be controlled, marine toxicity caused by explosive release can be avoided, marine organism adhesion can be reduced, the powdering degree of the antifouling paint coating can be reduced, and the corrosion current density can be reduced, and therefore the zinc-based isomeric zinc oxide is suitable for environmentally-friendly ship antifouling paint.