3results about How to "High initial capacity" patented technology

This invention discloses a high-performance polymer electrolyte based on a functionalized fluorinated ether diluent and its preparation method, relating to the field of electrochemical energy storage materials technology. The high-performance polymer electrolyte comprises: a polymer matrix, a lithium salt, an organic dispersion solvent, and a functionalized fluorinated ether diluent. By introducing a fluorinated ether diluent with a specific structure, this invention synergistically regulates the crystallization behavior of the polymer matrix and the lithium-ion solvation structure, solving core problems in traditional polymer electrolytes such as low ionic conductivity, poor interfacial stability, and lithium dendrite growth. The resulting electrolyte possesses high ionic conductivity, high lithium-ion transference number, and excellent interfacial stability, making it suitable for high-energy-density lithium metal batteries.

The application discloses a carbon-based negative electrode material and a preparation method and application thereof. The carbon-based negative electrode material comprises a porous carbon base and an encapsulant for converting open pores on the surface of the porous carbon base into closed pores; and the encapsulant is discrete encapsulating particles and / or a continuous encapsulating layer. The carbon-based negative electrode material disclosed by the application has high capacity, high initial efficiency, super-long cycle stability, excellent rate performance and wide temperature range adaptability.

This application discloses a battery and its fabrication method, belonging to the field of battery technology. The battery includes: a negative electrode sheet and an electrolyte; the negative electrode sheet includes a negative current collector, a negative electrode coating layer disposed on at least one side surface of the negative current collector, and a graphene interface layer, the graphene interface layer being located between the negative current collector and the negative electrode coating layer; the electrolyte includes: a film-forming additive, the film-forming additive being selected from at least one of fluoroethylene carbonate, difluoroethylene carbonate, and vinylene carbonate. The synergistic effect of these two additives enables the battery to simultaneously achieve high initial discharge capacity, improved rate performance, and cycle stability.