电池单体及其制备方法、电池装置、用电装置、储能装置
By using indium tin bismuth alloy for lattice doping and surface coating in lithium iron phosphate materials, the problems of low electronic conductivity and poor interface stability of lithium iron phosphate cathode materials are solved, thereby improving the energy density and cycle life of the battery and making it suitable for high-safety solid-state lithium-ion batteries.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG JINKO ENERGY STORAGE CO LTD
- Filing Date
- 2026-04-15
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, lithium iron phosphate cathode materials have low electronic conductivity, slow lithium-ion diffusion rate, and poor interface stability, which makes them particularly unsuitable for high-power, low-temperature, and solid-state battery applications, and thus difficult to meet the requirements of high-energy-density and high-safety batteries.
Lithium iron phosphate material is modified by using an indium tin bismuth alloy through both lattice doping and surface coating. By doping the first alloy in the lattice, the lithium-ion migration channels are broadened and the electronic conductivity is improved. At the same time, a highly conductive and chemically stable interface layer is formed on the surface, thus constructing an electron-ion synergistic conduction network.
It significantly improves the energy density, power performance and cycle life of the battery, and achieves efficient charge transfer and long-term cycle stability, making it suitable for high-safety solid-state lithium-ion batteries.
Smart Images
Figure CN122025733B_ABST