7results about How to "Reduced activation energy for diffusion" patented technology

The invention discloses a preparation method of an oxychloride electrolyte material, the oxychloride electrolyte material and an all-solid-state battery, and the method comprises the following steps: providing raw materials; the raw materials comprise metal chloride and lithium hydroxide; and reacting the metal chloride in the raw material with lithium hydroxide in an inert gas atmosphere to obtain the oxychloride electrolyte material generated by the reaction. Lithium hydroxide is used as a lithium raw material, the price is low, the preparation cost is reduced, hydrogen chloride is generated in the mixing preparation process, an acidic catalysis environment is provided, and the preparation time is shortened; an oxygen element and a chlorine element are introduced into the prepared oxychloride electrolyte material, an oxygen-chlorine frame structure formed by the oxygen element and the chlorine element is an obvious flexible ion frame structure, and the ion frame structure reduces the diffusion activation energy of lithium ions, so that the room-temperature ion conductivity of the oxychloride electrolyte material is improved.

The application belongs to the field of ceramic powder preparation, and discloses a method for in-situ preparation of high-performance TiB2-B4C composite ceramic from sapphire fine grinding waste. The method uses the waste produced in the sapphire grinding process as raw material (B4C, Al2O3 and Fe), adds TiO2 and C after alkali washing and purification, and combines with the discharge plasma sintering to in-situ prepare TiB2-B4C composite ceramic. The method not only realizes the comprehensive recovery of B4C in the sapphire fine grinding waste slurry, reduces environmental pollution, but also provides a method for in-situ preparation of TiB2-B4C composite ceramic from waste, changes waste into treasure, and realizes the secondary use of resources. In addition, the raw material cost is low, and the method has obvious economic value and environmental protection significance. The method has the advantages of short process, small pollution, simplicity and the like, and can be used for industrial production.

The invention relates to the technical field of metal material heat treatment, and discloses a method for improving the performance of a high-strength steel plate through electric field isothermal segmented spheroidizing annealing, which comprises the following steps: selecting a high-carbon martensitic stainless steel cold-rolled plate; fixing in a vacuum furnace, and carrying out radiation preheating to 650-750 DEG C; starting a pulse power supply to cooperate with a radiation field to rapidly heat to 1050-1080 DEG C for austenitizing; the current density is adjusted, air cooling is conducted to 730-760 DEG C, and electric field isothermal spheroidizing annealing is conducted; and finally, cooling to 450-500 DEG C along with the furnace, and then carrying out air cooling. According to the method, carbide dissolution is accelerated through the electromigration effect of pulse current, dispersion and precipitation of fine spherical carbides are promoted through segmented temperature control and an electric field morphological modification mechanism, network carbides are eliminated, the annealing period is obviously shortened, energy consumption is reduced, and the strength, plasticity and corrosion resistance of the steel plate are improved.

A grain boundary optimization method for additive manufacturing of high-temperature alloy based on deep cooling-current synergistic regulation, which relates to the field of metal additive manufacturing post-processing technology. The purpose of the present application is to solve the problem of optimizing the distribution of grain characteristics of GH4099 nickel-based high-temperature alloy manufactured by the existing method due to the lack of recrystallization driving force and the grain boundary pinning effect. Method: 1. Powder pretreatment; 2. Laser additive manufacturing; 3. Cryogenic treatment; 4. Pulse current annealing. The present application proposes a composite process based on "deep cooling treatment-current rapid annealing", which introduces uniform internal stress energy through non-destructive deep cooling treatment, and reduces the recrystallization energy barrier by combining pulse current annealing, thereby realizing high-proportion low-ΣCSL grain boundary construction (target proportion > 50%) while maintaining the advantages of near-net-shape additive manufacturing, thereby significantly improving the material's resistance to grain boundary failure and high-temperature service performance.

The application discloses an ITO-free vertical partition flexible stretchable dimming film and a preparation method thereof, and belongs to the technical field of dimming films.The dimming film comprises a flexible transparent substrate, a patterned silver nanowire / organic polymer composite electrode layer and an electrochromic functional layer; the composite electrode layer is divided into 8-12 vertical partitions, each partition comprises a working electrode area and a counter electrode area which are insulated from each other, and all electrode leads are gathered at the lower edge of the film; an insulating isolation groove penetrating through the composite electrode layer and the electrochromic functional layer is arranged between adjacent partitions.The application replaces the traditional ITO electrode with an organic composite electrode, eliminates the ion horizontal crosstalk between partitions through a physical isolation groove, and combines a short-time overdrive pulse, a constant-current coulomb meter control and a constant-voltage maintenance driving strategy, so that the device has the flexibility, the stretchability, the high-precision independent partition control ability and the long cycle stability while maintaining the high transmittance and the low haze.

The invention discloses a preparation method of a lithium iron phosphate / nitrogen-doped carbon / nano-carbon composite material and the prepared materials and uses, wherein biomass material powder is dispersed in an aqueous solution of a strong base and urea, a nano-carbon material solution is added, a mixed solution is obtained after a low-temperature freeze-thaw cycle, and then lithium iron phosphate powder is added to the mixed solution, mixed to obtain a mixed slurry, spray-dried to obtain a composite material powder, and then the composite material powder is placed in a muffle furnace and calcined at low temperature to obtain a precursor, and finally the precursor is placed in a tubular furnace and calcined in an inert gas atmosphere to obtain a lithium iron phosphate / nitrogen-doped carbon / nano-carbon composite material. The composite material prepared by the method has higher electrical conductivity and lithium ion diffusion rate, and is used as a positive electrode of a lithium ion battery, which can significantly improve its rate performance.

The present invention provides a solid electrolyte material and a preparation method and application thereof, belonging to the technical field of lithium battery application. The solid electrolyte material has the following chemical formula Li 6+x PsE 5+ x I 1‑x , 0<x<1. By using Li6PSe5I and Li7PSe6 as the matrix, Se 2‑ / I ‑ Proportion obtained. 2‑ / I ‑ Non-equivalent substitution adjusts the carrier concentration and ion diffusion channel size in the unit cell, improving ion conductivity; changes the lattice softness and lattice vibration frequency, reducing the diffusion activation energy of ions; adjusts the bond energy, enhances the electrochemical stability of the material, reduces the degree of side reactions during the charge and discharge cycle, and enhances the electrode / electrolyte interface compatibility. The preparation method of this solid electrolyte material is simple, ensuring efficient ion transmission while ensuring good interface stability, which is conducive to solving practical problems such as the damage to the cycle life of the full battery caused by existing sulfide solid electrolytes.