Composite cathode material for lithium-ion battery, and vehicle
US12244004B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2020 |
| Grant date | Mar 4, 2025 |
| Priority date | — |
| Expiry date | Dec 9, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed herein are a composite cathode material for a lithium-ion battery, a lithium-ion battery, and a vehicle. A core of the cathode material is a lithium-nickel-cobalt-manganese oxide material. A surface layer of the cathode material is a lithium-nickel-cobalt oxide material doped with an element E. There is a transition layer between the core and the surface layer. The transition layer is a lithium-nickel-cobalt-manganese oxide material doped with the element E. A content of the element E in the transition layer shows a decreasing trend in a direction from the surface layer of the cathode material to the core. A general formula for the composition of the transition layer is Li1+mNi1-x-y-zCoxMnyEzO2. 0≤m≤0.1, 0.01≤x≤0.1, 0.01≤y≤0.1, and 0.01≤z≤0.1. E is at least one of Al, Zr, Ti, Y, Ba or Sr.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.