Positivelektrodenfolie, Lithiumbatterie und Vorrichtung
Anmelder: BYD Company Limited 🇨🇳
Details
- Veröffentlichungs-Nr.
- EP4800748
- Anmeldetag
- 14. September 2024
- Veröffentlichung
- 8. Mai 2025
- Rechtsraum
- EP
- IPC
- H01M4/13, H01M10/052
Abstract
The present invention provides a positive electrode sheet, a lithium battery, and a device. The positive electrode sheet comprises a positive electrode current collector, and a bottom coating and a positive electrode coating that are sequentially stacked on at least one side of the positive electrode current collector, wherein the bottom coating contains a first positive electrode lithium supplementing agent, and the positive electrode coating contains a positive electrode active material and a second positive electrode lithium supplementing agent, the first coulombic efficiency of the first positive electrode lithium supplementing agent is less than 30% and the second positive electrode lithium supplementing agent can decompose to generate gas under a voltage greater than a de-lithiation potential of the second positive electrode lithium supplementing agent. The first positive electrode lithium supplementing agent and the second positive electrode lithium supplementing agent are introduced into the positive electrode sheet at the same time, and are arranged in the layered manner as described above, so that many problems caused by using the two independently can be reduced, and the lithium supplementing utilization rate of the first positive electrode lithium supplementing agent and that of the second positive electrode lithium supplementing agent are improved; and moreover, the battery impedance is not significantly increased, and the battery power performance is improved.
Anmelder
- Firma
- BYD Company Limited
- Land
- 🇨🇳 China
Chinesischer Konzern für Elektromobilität und Batterietechnik mit Sitz in Shenzhen. BYD entwickelt Elektro- und Hybridfahrzeuge, Akkumulatoren sowie Elektronik- und Halbleiterkomponenten.
4.202 Patente in unserer Datenbank
Fachgebiete
Venner Shipley entstand 1947 aus einer Patentagentur der 1930er-Jahre; durch Fusionen reichen ihre Wurzeln bis in die 1880er zurück. Als europäische Full-Service-IP-Kanzlei ist sie neben Großbritannien auch in Madrid und München vertreten.